CN107489284B - Construction method for local newly-added deep underground garage of basement - Google Patents
Construction method for local newly-added deep underground garage of basement Download PDFInfo
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- CN107489284B CN107489284B CN201710651849.9A CN201710651849A CN107489284B CN 107489284 B CN107489284 B CN 107489284B CN 201710651849 A CN201710651849 A CN 201710651849A CN 107489284 B CN107489284 B CN 107489284B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/06—Separating, lifting, removing of buildings; Making a new sub-structure
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/48—Foundations inserted underneath existing buildings or constructions
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/0007—Base structures; Cellars
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
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Abstract
The invention discloses a construction method of a local newly-added deep underground garage of a basement, which comprises the following steps: (1) selecting a land parcel with a basement, and determining a construction area; (2) excavating upper backfill in the construction area; (3) sinking the upright post piles, the uplift piles and the steel sheet piles into the ground at set positions, and repairing the top plate and the bottom plate of the basement, which are damaged due to the construction of each pile body, (4) reserving the original top plate and the original bottom plate of the basement in the enclosure structure, and completing foundation pit excavation; (5) pouring a bottom plate, and constructing each parking platform; and in the range of the enclosure structure, reserving a part of foundation piles of the basement, which are lower than the pile top elevation of the uplift pile. The invention can be used for building a deep underground garage in an area without a ground building or with a detachable building and a basement, so as to increase the number of underground parking spaces and relieve the problem of difficult parking.
Description
Technical Field
The invention relates to a construction method of an underground garage, in particular to a method for building a new underground garage at a local part of a basement.
Background
At present, the number of underground garages in cities in China is relatively small, particularly in large and medium-sized cities with large population density, but a large number of shallow basements are built in city areas, particularly basements with large areas are built in business areas and partial residential districts, the basements become underground shopping malls and partial underground garages become underground garages, most of the basements only have one-layer or two-layer structures, the utilization of underground spaces is seriously insufficient, partial basements are built in areas among ground buildings, it is quite difficult to find an undeveloped land block to build a newly-built underground garage in the areas, along with the gradual increase of the automobile holding amount, parking spaces of the existing overground garages and underground garages are seriously insufficient, the normal traveling of people is gradually influenced, the utilization efficiency of the underground spaces is improved, and partial shallow basements are changed into underground garages, it is necessary to solve the deficiency of parking spaces, and how to safely and efficiently construct a deep underground garage in the areas where the shallow basements are built is also a problem to be faced by the industry.
Disclosure of Invention
The invention aims to provide a construction method for building a deep underground garage in an area which is provided with a basement and is not provided with a ground building or is provided with a detachable ground building, so as to increase the number of underground parking spaces and relieve the problem of difficult parking, and the specific technical scheme is as follows:
the construction method of the underground garage with the newly added deep layer in the local part of the basement is used for building the underground garage in the land block with the basement, and the underground garage is completely built in the land block with the basement;
the construction method comprises the following steps:
(1) selecting a land parcel with a basement, determining a construction area, determining the occupied area range of the underground garage, and determining that no ground building or a detachable ground building exists in the land parcel of the basement in the construction area;
(2) excavating upper backfill in the construction area;
(3) sinking the upright post piles and the uplift piles into the ground at set positions and reaching set elevations, so that the upright post piles and the uplift piles downwards penetrate through a bottom plate of the basement;
sinking the steel sheet piles into the ground along a set position and reaching a set elevation, so that the steel sheet piles downwards penetrate through a bottom plate of the basement, and the steel sheet piles are mutually occluded to form a closed enclosure structure; the steel sheet pile preferably adopts a U-shaped steel sheet pile, a Z-shaped steel sheet pile or a cap-shaped steel sheet pile, and the steel sheet piles can be used independently or in combination;
a construction access is arranged on a top plate and a bottom plate of the basement in the enclosure structure;
the upright post piles and the uplift piles are positioned in an area surrounded by the enclosure structure;
the pile bottom elevation of the upright post pile and the steel sheet pile is lower than the elevation of the bottom plate of the underground garage;
the vertical column pile, the uplift pile and the steel sheet pile are constructed according to the following methods respectively:
arranging a top plate upright post hole on a top plate of the basement, arranging a bottom plate upright post hole on a bottom plate of the basement, wherein the bottom plate upright post hole is vertically opposite to the top plate upright post hole, and then sinking an upright post underground along the top plate upright post hole and the bottom plate upright post hole; repairing the top plate upright post pile hole and the bottom plate upright post pile hole: repairing reinforcing steel bars in a top plate of the basement, wherein the reinforcing steel bars are separated by top plate upright post holes, performing waterproof treatment on the top plate upright post holes, and pouring concrete to block gaps between the top plate upright post holes and upright post posts so as to connect the upright post posts on the top plate; repairing the steel bars in the bottom plate of the basement, which are separated by the bottom plate upright post hole, and pouring concrete to seal the gap between the bottom plate upright post hole and the upright post pile so as to connect the upright post pile on the bottom plate;
a top plate uplift pile hole is formed in a top plate of the basement, a bottom plate uplift pile hole which is opposite to the top plate uplift pile hole in the vertical direction is formed in a bottom plate of the basement, and then the uplift pile is sunk underground along the top plate uplift pile hole and the bottom plate uplift pile hole; repairing the top plate uplift pile hole and the bottom plate uplift pile hole: repairing reinforcing steel bars in a top plate of the basement, wherein the reinforcing steel bars are separated by a top plate uplift pile hole, performing waterproof treatment on the top plate uplift pile hole, and pouring concrete to block the top plate uplift pile hole; repairing the reinforcing steel bars in the bottom plate of the basement, which are separated by the bottom plate uplift pile holes, and pouring concrete to block the bottom plate uplift pile holes;
a top plate steel sheet pile groove is formed in a top plate of the basement, a bottom plate steel sheet pile groove which is opposite to the top plate steel sheet pile groove in the vertical direction is formed in a bottom plate of the basement, and then steel sheet piles are sunk underground along the top plate steel sheet pile groove and the bottom plate steel sheet pile groove; repairing the top plate steel sheet pile groove and the bottom plate steel sheet pile groove: repairing the steel bars in the top plate of the basement, which are separated by the top plate steel sheet pile grooves, performing waterproof treatment on the top plate steel sheet pile grooves, and pouring concrete to block gaps between the top plate steel sheet pile grooves and the steel sheet piles so as to connect the steel sheet piles on the top plate; repairing the steel bars in the bottom plate of the basement, which are separated by the bottom plate steel sheet pile grooves, performing waterproof treatment on the gap between the bottom plate steel sheet pile grooves and the outer side faces of the steel sheet piles, and pouring concrete to seal the gap between the bottom plate steel sheet pile grooves and the steel sheet piles so as to connect the steel sheet piles on the bottom plate; the outer side surface of the steel sheet pile refers to the side surface of the steel sheet pile facing the exterior of the enclosure structure;
(4) reserving an original top plate and a bottom plate of a basement in the building enclosure, and taking the part of the original top plate as a top plate of the underground garage;
dismantling original columns and beams of a basement in the enclosure structure, and excavating earthwork in the enclosure structure until excavation of a foundation pit is completed;
(5) and (4) pouring a bottom plate of the underground garage, and constructing each parking platform of the underground garage.
In the enclosure structure range, when the pile bottom elevation of the existing foundation pile of the basement in the enclosure structure is lower than the pile top elevation of the uplift pile of the underground garage, before the bottom plate of the underground garage is poured, firstly taking the pile top elevation of the uplift pile of the underground garage as a reference, cutting off the part, which is higher than the existing foundation pile of the basement, keeping the rest part in the original position, and pouring the bottom plate of the underground garage after the cutting off of the existing foundation pile of the basement is completed.
In the invention, before civil construction, the steel sheet pile is firstly sunk into the ground to form an enclosure structure, and the limitation of a construction area is completed, so that the influence on the existing basement is reduced. After the steel sheet piles, the upright post piles and the uplift piles are sunk to set elevations, repairing a top plate and a bottom plate of the damaged basement, and connecting the steel sheet piles and the upright post piles with the top plate and the bottom plate, firstly, ensuring the structural stability of the existing basement outside the enclosure structure, reducing the influence on the basement outside the enclosure structure, and recovering the use of the basement outside the enclosure structure as soon as possible; secondly, the top plate and the bottom plate of the basement in the enclosure structure are used as horizontal supports of the foundation pit, so that the safety of underground operation can be improved to the maximum extent on the basis of reducing construction cost and improving operation efficiency.
After the steel sheet pile groove cuts off the roof of basement, the roof adjacent with the steel sheet pile groove becomes a state of encorbelmenting, has increased the internal stress of basement roof, and the upper portion of accomplishing sunken steel sheet pile simultaneously also is in unrestrained state, and after accomplishing the restoration of roof steel sheet pile groove, can eliminate effectively because the roof is cut off the internal stress that brings, can prevent simultaneously that in the work progress, outside water from entering into the foundation ditch, influence safety and operation. After the bottom plate is cut off underground, the bottom plate of the basement can generate internal stress under the combined action of underground soil, water and the self weight of the basement, and meanwhile, the underground water can enter the basement along the gap, so that the influence can be reduced after the repair of the steel plate groove of the bottom plate is completed in time; meanwhile, the bottom plate of the basement in the enclosure structure is reserved, so that after the steel sheet pile groove of the bottom plate is repaired, accidents such as breakage and the like caused by weakened support of the basement in the enclosure structure in the subsequent earth excavation can be avoided.
Compared with the prior art, the method has the advantages that the top plate and the bottom plate of the basement in the building enclosure are removed, the whole structure of the basement is greatly damaged in the process of removing the top plate and the bottom plate of the basement, the structures of the rest parts can be extruded to the central area of the building enclosure, and the finished building enclosure can collapse under the condition that the mobility of part of underground soil is large, so that the safety of the whole basement is affected.
Before earth excavation, the steel sheet piles and the upright post piles are connected with the top plate and the bottom plate, the original main structure of the basement is maintained under the action of the top plate and the bottom plate of the basement in the enclosure structure, and the stability of the enclosure structure is guaranteed while the structural stability of the basement outside the enclosure structure is guaranteed.
In the construction method, when the elevation of the pile bottom of the existing foundation pile of the basement is lower than the elevation of the pile top of the uplift pile of the underground garage, the existing foundation pile of the basement is not required to be pulled out, the existing foundation pile of the basement is cut off by taking the elevation of the pile top of the uplift pile of the underground garage as a reference, and the half of the existing foundation pile left after the cutting off is kept in the original position. If the existing foundation pile is pulled out, the produced pile hole needs to be filled with concrete or other composite soil suitable for filling, so that the workload is increased, the required quantity of construction materials is increased, and the construction cost of the underground garage is increased.
Before sinking the steel sheet pile, firstly, slotting a top plate and a bottom plate of the basement so as to enable the steel sheet pile to sink smoothly, and avoiding the deformation of the steel sheet pile due to the higher hardness of the top plate and the bottom plate of the basement in the sinking process of the steel sheet pile, thereby further influencing the quality of the enclosure structure; by adopting the slotting design, the problem that the structure of the basement is damaged due to larger vibration caused by the fact that the steel sheet piles directly penetrate through the top plate and the bottom plate can be avoided. For the same reason, uplift pile holes and upright post holes are firstly formed in the top plate and the bottom plate of the basement.
The half existing foundation piles after being cut off are reserved in the original positions, the soil body and the existing foundation piles are adapted to each other for a long time and become a whole, the soil body around the existing foundation piles is even, and if uplift piles are required to be added at the bottom of the basement, uplift pile construction can be directly carried out between the existing foundation piles of the basement, the existing foundation piles are reserved, and normal construction of the uplift piles is not influenced.
In order to not influence the reserved part of the original basement and the use of the newly-built underground garage, waterproof treatment is carried out on a top plate upright post pile hole, a top plate uplift pile hole and a top plate steel plate pile groove on the top plate of the basement.
Because the stand pile is connected on the roof and the bottom plate of basement, is in the same place with whole underground garage connection, and the pile bottom elevation of stand pile is less than the elevation of underground garage's bottom plate simultaneously, and this stand pile still has the effect of anti-floating pile concurrently.
The steel sheet pile has a large contact area with the underground soil body, so that large friction force can be generated, and the steel sheet pile can play a certain anti-floating role in addition to the role of enclosing the foundation pit.
The invention utilizes part of the existing basements to build the underground garage in the area without ground buildings so as to enlarge the number of underground parking spaces and at least partially solve the problem of difficult parking, and provides a new construction idea of the underground garage for the area without complete plots for building the underground garage.
Further, the steel sheet pile in the step (3) is sunk underground in a segmented mode, and the following steps are specifically adopted:
(3.1) excavating a first section of top plate steel sheet pile groove on a top plate of the basement, excavating a first section of bottom plate steel sheet pile groove opposite to the first section of top plate steel sheet pile groove on a bottom plate of the basement, then suspending excavation of the top plate steel sheet pile groove and the bottom plate steel sheet pile groove, and sinking the steel sheet pile to a designed elevation through the first section of top plate steel sheet pile groove and the first section of bottom plate steel sheet pile groove;
(3.2) continuously excavating a second section of top plate steel sheet pile groove on the top plate of the basement, excavating a second section of bottom plate steel sheet pile groove opposite to the second section of top plate steel sheet pile groove on the bottom plate of the basement, suspending excavation of the top plate steel sheet pile groove and the bottom plate steel sheet pile groove again, and sinking the steel sheet pile to the designed elevation through the second section of top plate steel sheet pile groove and the second section of bottom plate steel sheet pile groove;
(3.3) continuously excavating a third section of top plate steel sheet pile groove on the top plate of the basement, excavating a third section of bottom plate steel sheet pile groove opposite to the third section of top plate steel sheet pile groove on the bottom plate of the basement, suspending excavation of the top plate steel sheet pile groove and the bottom plate steel sheet pile groove again, and sinking the steel sheet pile to the designed elevation through the third section of top plate steel sheet pile groove and the third section of bottom plate steel sheet pile groove;
(3.4) repeating the step (3.3) until the excavation of all the top plate steel sheet pile grooves and the bottom plate steel sheet pile grooves and the sinking of the steel sheet piles are completed;
after part of the steel sheet piles sink to the designed elevation, steel bars partitioned by the top plate steel sheet pile grooves begin to be repaired, and waterproof treatment and concrete pouring are carried out; gradually repairing the steel bars separated by the top plate steel sheet pile groove along with the sinking of the steel sheet pile, performing waterproof treatment and pouring concrete until the top plate steel sheet pile groove is repaired;
after part of the steel sheet piles sink to the designed elevation, beginning to repair the steel bars separated by the bottom plate steel sheet pile grooves, and pouring concrete; and gradually repairing the steel bars separated by the bottom plate steel sheet pile groove along with the sinking of the steel sheet pile, performing waterproof treatment and pouring concrete until the bottom plate steel sheet pile groove is repaired. In the sinking process of the steel sheet pile, the length of the top plate steel sheet pile groove which is not repaired is preferably less than 6 meters, and the length of the bottom plate steel sheet pile groove which is not repaired is preferably less than 6 meters.
Adopt the segmentation to excavate roof steel sheet pile groove and bottom plate steel sheet pile groove, follow sinking of steel sheet pile simultaneously, progressively restore roof steel sheet pile groove and bottom plate steel sheet pile groove, avoid roof steel sheet pile groove and bottom plate steel sheet pile groove overlength, furthest reduces the roof because the internal stress that encorbelments and cause reduces the influence of construction to the current structure of basement. Meanwhile, underground water can be prevented from entering a construction area, particularly entering an area of a basement outside the enclosure structure, even if the underground water enters the construction area in the construction process, the water can be timely treated by adopting the sectional construction and timely repairing operation scheme, and a large-range water inlet area can not appear. The safety of the basement and the construction safety of the underground garage are guaranteed.
Preferably, before plugging a gap between a bottom plate upright post hole and an upright post, firstly performing waterproof treatment; before plugging a bottom plate uplift pile hole, firstly performing waterproof treatment; before plugging the gap between the steel sheet pile groove of the bottom plate and the inner side surface of the steel sheet pile, firstly, performing waterproof treatment.
Because the original bottom plate of the basement in the enclosure structure is reserved, in order to fully play the function of the partial bottom plate, the partial bottom plate can be utilized to construct the equipment room of the underground garage, including the ventilation passageway used as the underground garage, so that partial waste water or other wastes can be generated, and in order to avoid the waste water or the wastes from leaking to the lower parking platform from the gap reserved in the bottom plate, the unnecessary influence on parking equipment and parked vehicles is caused. After the waterproof treatment is carried out on the bottom plate upright post pile hole, the bottom plate uplift-resistant pile hole and the bottom plate steel plate pile groove, the unnecessary influence can be effectively avoided, and the normal operation of the garage is ensured to the maximum extent.
When repairing the top plate upright post pile hole and the bottom plate upright post pile hole, connecting the reinforcing steel bars cut off by the top plate upright post pile hole to the upright post pile, and connecting the reinforcing steel bars cut off by the bottom plate upright post pile hole to the upright post pile; when the top plate steel sheet pile groove and the bottom plate steel sheet pile groove are repaired, the steel bars cut by the top plate steel sheet pile groove are connected to the steel sheet pile, and the steel bars cut by the bottom plate steel sheet pile groove are connected to the steel sheet pile.
After the steel bars in the top plate and the bottom plate are connected to the upright post piles and the steel sheet piles, the connection strength of the top plate and the bottom plate with the upright post piles and the steel sheet piles can be further improved, the structures inside and outside the enclosure structure are further promoted to form a whole, and the reserved part of the basement and the safety factor of a newly-built underground garage are enhanced.
Adopt stagnant water steel sheet to carry out water repellent treatment to roof column stake hole, the step is as follows: firstly, processing the inner edge of a top plate upright post hole, finishing the inner edge of the top plate upright post hole into a step shape while planing out broken ends of reinforcing steel bars, and then welding one end of a water stop steel plate on the upright post, and lapping the other end of the water stop steel plate on a step surface of the inner edge of the top plate upright post hole; the water stop steel plate can be lapped with the step surface of the inner edge of the top plate upright post hole in a non-connection mode, and can also be lapped by welding in a mode of broken ends of reinforcing steel bars;
adopting the stagnant water steel sheet to carry out water repellent treatment to the roof sheet steel sheet stake groove, the step is as follows: firstly, processing the inner edge of a top plate steel sheet pile groove, finishing the inner edge of the top plate steel sheet pile groove into a step shape while planing out a broken end of a steel bar, and then welding one end of a water stop steel plate on a steel sheet pile, and lapping the other end of the water stop steel plate on a step surface of the inner edge of the top plate steel sheet pile groove; the water stop steel plate and the step surface of the inner edge of the top plate steel sheet pile groove can be lapped in a non-connection mode, and can also be lapped in a mode of welding the broken ends of the steel bars;
adopting the water stop steel plate to carry out waterproof treatment on the gap between the outer side surfaces of the bottom plate steel sheet pile groove and the steel sheet pile, and comprising the following steps of: firstly, processing the inner edge of a bottom plate steel sheet pile groove, finishing the inner edge of the bottom plate steel sheet pile groove into a step shape while planing out broken ends of reinforcing steel bars, and then welding one end of a water stop steel plate on a steel sheet pile, and lapping the other end of the water stop steel plate on a step surface of the inner edge of the bottom plate steel sheet pile groove; the water stop steel plate and the step surface of the inner edge of the bottom plate steel plate pile groove can be lapped in a non-connection mode, and can also be lapped in a mode of welding broken ends of reinforcing steel bars.
The water stop steel plate has certain strength and rigidity, and is subjected to waterproof treatment, so that the waterproof performance of the structure can be ensured, the connection strength between the top plate of the basement and the upright post pile and the connection strength between the bottom plate and the upright post pile and the steel plate pile can be improved.
Furthermore, an original bottom plate of the basement in the building envelope is used as a middle plate to build an interlayer. In the prior art, the floor height of a basement is generally 3-3.5 meters, the clear height of about 1 meter is left after a parking platform is built, the distance cannot meet the requirement of building a parking platform, and in order to fully utilize the reserved bottom plate of the original basement, an interlayer is built by taking the partial bottom plate as a middle plate, and the interlayer can be used as a facility room of an underground garage or a centralized passage way of a ventilation pipeline or an electric wire cable. The reserved bottom plate is used for building the interlayer, so that the building cost can be reduced on the basis of improving the construction safety of the underground garage, and certainly, if the basement has higher floor height, two layers of parking platforms can be built, and the reserved bottom plate can be used as a supporting structure to build one layer of parking platform.
As an optimal scheme, in the construction process, after the existing foundation pile of the basement is partially cut off, the part of the existing foundation pile which is reserved in situ is used as an uplift pile of the underground garage.
In the construction process, the existing foundation piles of the basement are reasonably utilized to effectively reduce the construction cost, because the existing foundation piles of the basement are in contact with the soil body for too long time, the soil body around the existing foundation piles forms a stable structure, the existing foundation piles are held strongly, the existing foundation piles of the existing part which are kept in place are used as uplift piles, the number of newly-added uplift piles of the underground garage can be effectively reduced, the construction speed can be increased, the cost of the uplift piles can be reduced, and therefore the construction cost of the whole underground garage is reduced.
Further, when the number of the basement in the construction area is 2 or 3, before sinking the upright post piles, firstly, arranging floor upright post pile holes which are vertically opposite to the top plate upright post pile holes and the bottom plate upright post pile holes on a middle floor of the basement, and then sinking the upright post piles;
before sinking the uplift pile, firstly, arranging a floor uplift pile hole which is opposite to the top plate uplift pile hole and the bottom plate uplift pile hole in the middle floor of the basement, and then sinking the uplift pile;
before sinking the steel sheet pile, firstly, arranging a floor steel sheet pile groove which is vertically opposite to the top plate steel sheet pile groove and the bottom plate steel sheet pile groove on a middle floor of the basement, and then sinking the steel sheet pile; repairing the steel bars which face the outer side of the steel sheet pile and are separated by the floor slab steel sheet pile groove, performing waterproof treatment on a gap between the floor slab steel sheet pile groove and the outer side face of the steel sheet pile, and pouring concrete to seal the gap between the floor slab steel sheet pile groove and the outer side face of the steel sheet pile so as to connect the steel sheet pile on the floor slab;
and after the connection between the steel sheet pile and the middle floor slab is completed, the middle floor slab of the basement in the enclosure structure is dismantled before earthwork in the enclosure structure is excavated.
Or when the number of the basement layers in the construction area is 2 or 3, at least one intermediate floor slab is reserved;
before sinking the upright post pile, firstly, arranging a floor upright post pile hole which is vertically opposite to the top plate upright post pile hole and the bottom plate upright post pile hole on a middle floor of the basement, and then sinking the upright post pile;
before sinking the uplift pile, firstly, arranging a floor uplift pile hole which is opposite to the top plate uplift pile hole and the bottom plate uplift pile hole in the middle floor of the basement, and then sinking the uplift pile;
before sinking the steel sheet pile, firstly, arranging a floor steel sheet pile groove which is vertically opposite to the top plate steel sheet pile groove and the bottom plate steel sheet pile groove on a middle floor of the basement, and then sinking the steel sheet pile; repairing the steel bars which face the outer side of the steel sheet pile and are separated by the floor slab steel sheet pile groove, performing waterproof treatment on a gap between the floor slab steel sheet pile groove and the outer side face of the steel sheet pile, and pouring concrete to seal the gap between the floor slab steel sheet pile groove and the outer side face of the steel sheet pile so as to connect the steel sheet pile on the middle floor slab;
the remaining intermediate floor is treated as follows: repairing the steel bars towards the inner side of the steel sheet pile and separated by the floor steel sheet pile groove, performing waterproof treatment on the gap between the floor steel sheet pile groove and the inner side face of the steel sheet pile, and pouring concrete to seal the gap between the floor steel sheet pile groove and the inner side face of the steel sheet pile.
In order to improve the utilization efficiency of underground space, simultaneously, because the intermediate floor slab of the basement needs to be much weaker than the thickness and the bearing capacity of the bottom plate thereof, and the bearing strength of the intermediate floor slab of most basements can not meet the requirement of an underground garage, therefore, in the application, when the sinking of each pile body is completed, and after the connection of the steel sheet pile and the intermediate floor slab outside the enclosure structure is completed, the steel sheet pile can be disassembled, and the disassembly of the intermediate floor slab can be completed before the excavation of the earth below the bottom plate of the basement. Of course, all or a certain layer of intermediate floor slab of the basement can be reserved according to the needs, and the intermediate floor slab is used as an intermediate plate to increase the construction interlayer to be used as an equipment installation area, an air pipe channel or a temporary storage area.
Preferably, the upright post pile of the underground garage is a section steel prefabricated part or a reinforced concrete prefabricated part. The manufacturing process of the section steel prefabricated member or the reinforced concrete prefabricated member has certain specifications and standards at present, the requirements of the application can be met, and the components can be adopted to improve the construction efficiency and reduce the cost on the basis of ensuring the construction quality of the application.
For the availability ratio that improves the efficiency of construction and improve underground space, in this application parking platform adopts the steel construction preparation. The steel structure has the advantages of small occupied space and convenience in construction, and is used as a main structural member of the parking platform of the underground garage, the steel structure is adopted for manufacturing, and the construction speed can be effectively improved. And because the volume of steel construction is less relatively, can improve underground space's utilization ratio, reduce the occupation space in single parking stall, reduce the construction cost in single parking stall.
And after the sinking of each pile body and the repair of the top plate of the basement are finished, reserving a construction access on the top plate of the basement in the building envelope, backfilling the construction area, and recovering the smoothness of the road surface. Before underground construction is carried out, the construction area is backfilled, so that the influence of construction on ground traffic can be reduced to the maximum extent, meanwhile, the area of the exposed ground in the construction area can be effectively reduced, and the influence on the environment due to the exposed ground is reduced.
Drawings
Fig. 1 is a range of a construction area in one embodiment, where the construction area shown in fig. 1 includes a partial basement area and an area outside the basement, in fig. 1, an area G surrounded by a dotted line indicates an area of the existing basement, and an area F indicates an area of the basement occupied by the underground garage.
Fig. 2 is a cross-sectional view taken along line E-E of fig. 1.
Fig. 3 is a schematic view after completion of subsidence of a post pile, a uplift pile, and a steel sheet pile.
Fig. 4 is a schematic view after earth excavation is completed.
Fig. 5 is a schematic diagram of the completed underground garage floor construction.
Fig. 6 is a schematic view from bottom to top after a part of the parking platform is completed.
Fig. 7 is a schematic view after all the parking platforms are completed, wherein a sandwich is also built.
Fig. 8 is a schematic view of the waterproof treatment between the steel sheet pile and the basement by using the water stop steel sheet.
Detailed Description
Example 1:
referring to fig. 1 to 7, in this embodiment, an underground garage is newly built in an area where a basement is built by using the construction method of the underground garage where a local newly-added deep layer of the basement is provided.
In this embodiment, the land parcel used for constructing the underground garage is a land parcel with a basement, and no ground building is arranged in the land parcel with the basement, and the underground garage is constructed according to the following steps:
(1) selecting a plot with a basement without an upper building, determining a construction area, and determining a floor area of an underground garage, see FIG. 1, axis ① - ⑧ and axis 1
Is the axis of the existing lower chamber
And
is the sinking position and axis of the steel sheet pile
And the axis line
The intersection point 131 is the sinking position of the stud pile, which is not shown in the figure.
Fig. 2 is an elevation view of a construction area of an underground garage, specifically, a cross-sectional view along direction E-E in fig. 1, in which reference numeral 100 denotes a ground surface, reference numeral 11 denotes a backfill area of a proposed area of the underground garage, reference numeral 83 denotes a pillar of a basement, reference numeral 81 denotes a top plate of the basement, and reference numeral 82 denotes a bottom plate of the basement.
(2) Referring to fig. 3, the backfill soil of the upper backfill soil region 11 within the construction area is excavated.
(3) Continuing to refer to fig. 3, in the set position, the stud 13 and the uplift pile 19 are lowered into the ground to the set elevation, such that the stud 13 and the uplift pile 19 pass down through the bottom plate 82 of the basement.
And sinking the steel sheet piles 12 into the ground along a set axis and reaching a set elevation, so that the steel sheet piles 12 downwards penetrate through the bottom plate 82 of the basement, and the steel sheet piles 12 are mutually meshed to form a closed enclosure structure.
And construction entrances and exits are formed in a top plate 81 and a bottom plate 82 of the basement in the enclosure structure, and for convenience of description, the construction entrance and exit on the top plate is called a top plate entrance and exit 14, and the entrance and exit on the bottom plate is called a bottom plate entrance and exit 15.
The stud piles 13 and the uplift piles 19 are located within the area enclosed by the enclosure.
The pile bottom elevation of the upright pile 13 and the steel sheet pile 12 is lower than the elevation of the bottom plate 82 of the underground garage.
The vertical column pile 13, the uplift pile 19 and the steel sheet pile 12 are constructed according to the following method:
construction of the upright pile 13:
a top plate upright post hole is arranged on a top plate 81 of the basement, a bottom plate upright post hole which is opposite to the top plate upright post hole is arranged on a bottom plate 82 of the basement, and then the upright post 13 is sunk underground along the top plate upright post hole and the bottom plate upright post hole. Repairing the top plate upright post pile hole and the bottom plate upright post pile hole: repairing reinforcing steel bars in a top plate of the basement, wherein the reinforcing steel bars are separated by top plate upright post holes, performing waterproof treatment on the top plate upright post holes, and pouring concrete to block gaps between the top plate upright post holes and upright post posts so as to connect the upright post posts on the top plate; repairing the steel bars in the bottom plate of the basement, which are separated by the bottom plate upright post hole, and pouring concrete to seal the gap between the bottom plate upright post hole and the upright post pile so as to connect the upright post pile on the bottom plate.
Construction of the uplift pile 19:
a top plate uplift pile hole is formed in a top plate of the basement, a bottom plate uplift pile hole which is opposite to the top plate uplift pile hole in the vertical direction is formed in a bottom plate of the basement, and then the uplift pile is sunk underground along the top plate uplift pile hole and the bottom plate uplift pile hole; repairing the top plate uplift pile hole and the bottom plate uplift pile hole: repairing reinforcing steel bars in a top plate of the basement, wherein the reinforcing steel bars are separated by a top plate uplift pile hole, performing waterproof treatment on the top plate uplift pile hole, and pouring concrete to block the top plate uplift pile hole; and repairing the reinforcing steel bars in the bottom plate of the basement, which are separated by the uplift pile holes of the bottom plate, and pouring concrete to block the uplift pile holes of the bottom plate.
Construction of the steel sheet pile 12:
the steel sheet pile is sunk underground in a segmented mode, and the method specifically comprises the following steps:
(3.1) excavating a first section of top plate steel sheet pile groove on the top plate of the basement, excavating a first section of bottom plate steel sheet pile groove which is opposite to the first section of top plate steel sheet pile groove from top to bottom on the bottom plate of the basement, then suspending excavation of the top plate steel sheet pile groove and the bottom plate steel sheet pile groove, and sinking the steel sheet pile to the designed elevation through the first section of top plate steel sheet pile groove and the first section of bottom plate steel sheet pile groove.
(3.2) continuously excavating a second section of top plate steel sheet pile groove on the top plate of the basement, excavating a second section of bottom plate steel sheet pile groove opposite to the second section of top plate steel sheet pile groove from top to bottom on the bottom plate of the basement, suspending excavation of the top plate steel sheet pile groove and the bottom plate steel sheet pile groove again, and sinking the steel sheet pile to the designed elevation through the second section of top plate steel sheet pile groove and the second section of bottom plate steel sheet pile groove.
And (3.3) continuously excavating a third section of top plate steel sheet pile groove on the top plate of the basement, excavating a third section of bottom plate steel sheet pile groove opposite to the third section of top plate steel sheet pile groove from top to bottom on the bottom plate of the basement, suspending excavation of the top plate steel sheet pile groove and the bottom plate steel sheet pile groove again, and sinking the steel sheet pile to the designed elevation through the third section of top plate steel sheet pile groove and the third section of bottom plate steel sheet pile groove.
(3.4) repeating the step (3.3) until the excavation of all the top plate steel sheet pile grooves and the bottom plate steel sheet pile grooves and the sinking of the steel sheet piles are completed;
after part of the steel sheet piles sink to the designed elevation, steel bars partitioned by the top plate steel sheet pile grooves begin to be repaired, and waterproof treatment and concrete pouring are carried out; gradually repairing the steel bars separated by the top plate steel sheet pile groove along with the sinking of the steel sheet pile, performing waterproof treatment and pouring concrete until the top plate steel sheet pile groove is repaired;
after part of the steel sheet piles sink to the designed elevation, beginning to repair the steel bars separated by the bottom plate steel sheet pile grooves, and pouring concrete; and gradually repairing the steel bars separated by the bottom plate steel sheet pile groove along with the sinking of the steel sheet pile, performing waterproof treatment and pouring concrete until the bottom plate steel sheet pile groove is repaired.
In this embodiment, referring to fig. 8, a specific repair process of the top plate steel sheet pile groove includes:
firstly, the inner edge of a top plate steel sheet pile groove is processed, the inner edge of the top plate steel sheet pile groove is trimmed into a step shape while a steel bar broken head 3 is planed out, the steel bar broken head 3 is connected to a steel sheet pile 12, then one end of a water stop steel plate 2 is welded on the steel sheet pile 12, the other end of the water stop steel plate is lapped on the step surface of the inner edge of the top plate steel sheet pile groove, the waterproof processing is completed, then concrete is poured, and the concrete is filled in a gap between the top plate steel sheet pile groove and the steel sheet pile. The restoration of the top plate steel sheet pile groove is carried out along with the sinking of the steel sheet pile, after the sinking of a part of the steel sheet pile is completed, the top plate steel sheet pile groove which is completed to sink needs to be restored, and the length of the top plate steel sheet pile groove which is not completed to restore is controlled within 6 meters and does not exceed 6 meters.
The repair of the bottom plate steel sheet pile groove is similar to the repair of the top plate steel sheet pile groove, and also refer to fig. 8, the specific repair process is as follows: the method comprises the steps of firstly processing the inner edge of a bottom plate steel sheet pile groove, finishing the inner edge of the bottom plate steel sheet pile groove into a step shape while planing out a broken reinforcing steel bar, connecting the broken reinforcing steel bar to the steel sheet pile, welding one end of a water stop steel plate on the steel sheet pile, overlapping the other end of the water stop steel plate on a step surface of the inner edge of the bottom plate steel sheet pile groove to complete waterproof processing, and then pouring concrete to fill the gap between the bottom plate steel sheet pile groove and the steel sheet pile. The repair of the bottom plate steel sheet pile groove is carried out along with the sinking of the steel sheet pile, after the sinking of a part of the steel sheet pile is completed, the bottom plate steel sheet pile groove which is completed to sink needs to be repaired, and the length of the bottom plate steel sheet pile groove which is not completed to repair is controlled within 6 meters and does not exceed 6 meters.
In this embodiment, the inside and outside both sides of steel sheet pile and the gap between roof steel sheet pile groove and the bottom plate steel sheet pile groove have all adopted the stagnant water steel sheet to carry out water repellent, according to the needs of difference, in other embodiments, the gap between steel sheet pile medial surface and the bottom plate steel sheet pile groove can need not adopt the stagnant water steel sheet to carry out water repellent. The inner side face of the steel sheet pile refers to the side face of the steel sheet pile facing the interior of the enclosure structure, and the outer side face of the steel sheet pile refers to the side face of the steel sheet pile facing the exterior of the enclosure structure.
The concrete process of repairing the top plate upright post hole and the bottom plate upright post hole is similar to the repair of repairing the top plate steel sheet pile groove, and the above repair process of the top plate steel sheet pile groove can be referred to, and is not repeated.
The concrete flow of restoreing roof resistance to plucking stake hole and bottom plate resistance to plucking stake hole is similar with the restoration of restoreing roof steel sheet pile groove, only the stagnant water steel sheet need not be connected on the resistance to plucking stake to and the reinforcing bar of digging need not also be connected on the resistance to plucking stake, only need will be cut off the reinforcing bar reconnect can, concrete can refer to the restoration flow in foretell roof steel sheet pile groove, no longer give unnecessary details.
(4) Referring to fig. 4, the original top plate 81 and bottom plate 82 of the basement in the building enclosure are retained, and the original top plate is used as the top plate of the underground garage.
The original columns and beams of the basement in the building envelope are removed, earthwork below a bottom plate 82 of the basement in the building envelope is excavated until excavation of the foundation pit is completed, and in fig. 4, a reference numeral 20 denotes a bottom surface of the foundation pit after the excavation of the earthwork is completed.
(5) Referring to fig. 5, after the sinking of each pile body and the repairing of the top plate of the basement are completed, the construction entrance and exit on the top plate of the basement in the enclosure structure are reserved, and the construction area 11 is backfilled to restore the smooth road surface.
And (3) pouring a bottom plate 21 of the underground garage, so that each uplift pile 19 is connected to the bottom plate 21. Referring to fig. 6, the parking decks 22 below the floor 82 of the basement are first constructed. Referring to fig. 7, the parking platform 23 is then constructed above the floor 82 of the basement. In this embodiment, the basement is a single-layer structure, the floor height of the basement is 3.5 meters, the floor height of the parking platform 23 is 2.5 meters, and a space of 1 meter is left, in this embodiment, the space of 1 meter is utilized, the bottom plate 82 of the basement is used as a middle plate to build a sandwich layer 24, and the sandwich layer 24 is used as an arrangement area of an equipment room and a ventilation pipeline of the underground garage.
In this embodiment, since the elevation of the pile bottom of the existing foundation pile of the basement in the enclosure structure is higher than the elevation of the pile top of the uplift pile of the underground garage, in this embodiment, the existing foundation pile of the basement is completely removed.
It can be understood that, in other embodiments, when the pile bottom elevation of the existing foundation pile in the enclosure structure is lower than the pile top elevation of the uplift pile of the underground garage, before the bottom plate of the underground garage is poured, the pile top elevation of the uplift pile of the underground garage is firstly used as a reference, the higher part of the existing foundation pile of the basement is cut off, the rest part is kept in situ, and after the cutting off of the existing foundation pile of the basement is completed, the bottom plate of the underground garage is poured.
During construction, the floor doorway 15 is closed at an appropriate timing according to the progress of construction, and the ceiling doorway 14 remains as a ventilation entrance.
In this embodiment, the upright post pile of the underground garage is made of H-shaped steel, and of course, according to specific construction requirements, the upright post pile may also be made of other shaped steel, such as channel steel, steel pipe, etc., and of course, the upright post pile may also be made of its reinforced concrete prefabricated member.
The parking platform in this embodiment is made of a steel structure.
In this embodiment, there is no ground building in the basement, and it is understood that in other embodiments, the ground building may be removed and used as a ground for constructing an underground garage.
Example 2
In this embodiment, the basement of the construction area is a double-layer structure, and this embodiment is basically the same as embodiment 1, except that:
before sinking the upright post pile, firstly, a floor upright post pile hole which is vertically opposite to the top plate upright post pile hole and the bottom plate upright post pile hole is arranged on a middle floor of the basement, and then the upright post pile is sunk.
Before sinking the uplift pile, firstly, a floor uplift pile hole which is opposite to the top plate uplift pile hole and the bottom plate uplift pile hole is formed in the middle floor of the basement, and then the uplift pile is sunk.
Before sinking the steel sheet pile, firstly, arranging a floor steel sheet pile groove which is vertically opposite to the top plate steel sheet pile groove and the bottom plate steel sheet pile groove on a middle floor of the basement, and then sinking the steel sheet pile; and simultaneously repairing the steel bars on the outer side of the steel sheet pile and separated by the floor steel sheet pile groove, performing waterproof treatment on the gap between the floor steel sheet pile groove and the outer side surface of the steel sheet pile, and pouring concrete to seal the gap between the floor steel sheet pile groove and the outer side surface of the steel sheet pile so as to connect the steel sheet pile to the middle floor, wherein the waterproof treatment is the same as that of the roof steel sheet pile groove in embodiment 1, and the details are not repeated.
And after the connection between the steel sheet pile and the middle floor slab is completed, the middle floor slab of the basement in the enclosure structure is dismantled before earthwork in the enclosure structure is excavated.
It can be understood that when the basement of the construction area is of a three-layer structure, the construction method can be referred to, and details are not repeated.
It will be appreciated that in other embodiments, the intermediate floor of the basement remains and the remaining intermediate floor is treated as follows: repairing the steel bars towards the inner side of the steel sheet pile and separated by the floor steel sheet pile groove, performing waterproof treatment on the gap between the floor steel sheet pile groove and the inner side face of the steel sheet pile, and pouring concrete to seal the gap between the floor steel sheet pile groove and the inner side face of the steel sheet pile. The reserved intermediate floor slab of the basement can be used as a middle plate, and an interlayer is built to be used as an equipment installation area, an air pipe channel or a temporary storage area.
Claims (10)
1. The construction method of the underground garage with the newly added deep layer in the local part of the basement is used for building the underground garage in the land block with the basement, and the underground garage is completely built in the land block with the basement;
the construction method is characterized by comprising the following steps:
(1) selecting a land parcel with a basement, determining a construction area, determining the occupied area range of the underground garage, and determining that no ground building or a detachable ground building exists in the land parcel of the basement in the construction area;
(2) excavating upper backfill in the construction area;
(3) sinking the upright post piles and the uplift piles into the ground at set positions and reaching set elevations, so that the upright post piles and the uplift piles downwards penetrate through a bottom plate of the basement;
sinking the steel sheet piles into the ground along a set position and reaching a set elevation, so that the steel sheet piles downwards penetrate through a bottom plate of the basement, and the steel sheet piles are mutually occluded to form a closed enclosure structure;
a construction access is arranged on a top plate and a bottom plate of the basement in the enclosure structure;
the upright post piles and the uplift piles are positioned in an area surrounded by the enclosure structure;
the pile bottom elevation of the upright post pile and the steel sheet pile is lower than the elevation of the bottom plate of the underground garage;
the vertical column pile, the uplift pile and the steel sheet pile are constructed according to the following methods respectively:
arranging a top plate upright post hole on a top plate of the basement, arranging a bottom plate upright post hole on a bottom plate of the basement, wherein the bottom plate upright post hole is vertically opposite to the top plate upright post hole, and then sinking an upright post underground along the top plate upright post hole and the bottom plate upright post hole; repairing the top plate upright post pile hole and the bottom plate upright post pile hole: repairing reinforcing steel bars in a top plate of the basement, wherein the reinforcing steel bars are separated by top plate upright post holes, performing waterproof treatment on the top plate upright post holes, and pouring concrete to block gaps between the top plate upright post holes and upright post posts so as to connect the upright post posts on the top plate; repairing the steel bars in the bottom plate of the basement, which are separated by the bottom plate upright post hole, and pouring concrete to seal the gap between the bottom plate upright post hole and the upright post pile so as to connect the upright post pile on the bottom plate;
a top plate uplift pile hole is formed in a top plate of the basement, a bottom plate uplift pile hole which is opposite to the top plate uplift pile hole in the vertical direction is formed in a bottom plate of the basement, and then the uplift pile is sunk underground along the top plate uplift pile hole and the bottom plate uplift pile hole; repairing the top plate uplift pile hole and the bottom plate uplift pile hole: repairing reinforcing steel bars in a top plate of the basement, wherein the reinforcing steel bars are separated by a top plate uplift pile hole, performing waterproof treatment on the top plate uplift pile hole, and pouring concrete to block the top plate uplift pile hole; repairing the reinforcing steel bars in the bottom plate of the basement, which are separated by the bottom plate uplift pile holes, and pouring concrete to block the bottom plate uplift pile holes;
a top plate steel sheet pile groove is formed in a top plate of the basement, a bottom plate steel sheet pile groove which is opposite to the top plate steel sheet pile groove in the vertical direction is formed in a bottom plate of the basement, and then steel sheet piles are sunk underground along the top plate steel sheet pile groove and the bottom plate steel sheet pile groove; repairing the top plate steel sheet pile groove and the bottom plate steel sheet pile groove: repairing the steel bars in the top plate of the basement, which are separated by the top plate steel sheet pile grooves, performing waterproof treatment on the top plate steel sheet pile grooves, and pouring concrete to block gaps between the top plate steel sheet pile grooves and the steel sheet piles so as to connect the steel sheet piles on the top plate; repairing the steel bars in the bottom plate of the basement, which are separated by the bottom plate steel sheet pile grooves, performing waterproof treatment on the gap between the bottom plate steel sheet pile grooves and the outer side faces of the steel sheet piles, and pouring concrete to seal the gap between the bottom plate steel sheet pile grooves and the steel sheet piles so as to connect the steel sheet piles on the bottom plate; the outer side surface of the steel sheet pile refers to the side surface of the steel sheet pile facing the exterior of the enclosure structure;
(4) reserving an original top plate and a bottom plate of a basement in the building enclosure, and taking the part of the original top plate as a top plate of the underground garage;
dismantling original columns and beams of a basement in the enclosure structure, and excavating earthwork in the enclosure structure until excavation of a foundation pit is completed;
(5) pouring a bottom plate of the underground garage, and constructing each parking platform of the underground garage;
in the enclosure structure range, when the pile bottom elevation of the existing foundation pile of the basement in the enclosure structure is lower than the pile top elevation of the uplift pile of the underground garage, before the bottom plate of the underground garage is poured, firstly taking the pile top elevation of the uplift pile of the underground garage as a reference, cutting off the part, which is higher than the existing foundation pile of the basement, keeping the rest part in the original position, and pouring the bottom plate of the underground garage after the cutting off of the existing foundation pile of the basement is completed.
2. The construction method according to claim 1,
the steel sheet pile in the step (3) is sunk underground in a segmented mode, and the following steps are specifically adopted:
(3.1) excavating a first section of top plate steel sheet pile groove on a top plate of the basement, excavating a first section of bottom plate steel sheet pile groove opposite to the first section of top plate steel sheet pile groove on a bottom plate of the basement, then suspending excavation of the top plate steel sheet pile groove and the bottom plate steel sheet pile groove, and sinking the steel sheet pile to a designed elevation through the first section of top plate steel sheet pile groove and the first section of bottom plate steel sheet pile groove;
(3.2) continuously excavating a second section of top plate steel sheet pile groove on the top plate of the basement, excavating a second section of bottom plate steel sheet pile groove opposite to the second section of top plate steel sheet pile groove on the bottom plate of the basement, suspending excavation of the top plate steel sheet pile groove and the bottom plate steel sheet pile groove again, and sinking the steel sheet pile to the designed elevation through the second section of top plate steel sheet pile groove and the second section of bottom plate steel sheet pile groove;
(3.3) continuously excavating a third section of top plate steel sheet pile groove on the top plate of the basement, excavating a third section of bottom plate steel sheet pile groove opposite to the third section of top plate steel sheet pile groove on the bottom plate of the basement, suspending excavation of the top plate steel sheet pile groove and the bottom plate steel sheet pile groove again, and sinking the steel sheet pile to the designed elevation through the third section of top plate steel sheet pile groove and the third section of bottom plate steel sheet pile groove;
(3.4) repeating the step (3.3) until the excavation of all the top plate steel sheet pile grooves and the bottom plate steel sheet pile grooves and the sinking of the steel sheet piles are completed;
after part of the steel sheet piles sink to the designed elevation, steel bars partitioned by the top plate steel sheet pile grooves begin to be repaired, and waterproof treatment and concrete pouring are carried out; gradually repairing the steel bars separated by the top plate steel sheet pile groove along with the sinking of the steel sheet pile, performing waterproof treatment and pouring concrete until the top plate steel sheet pile groove is repaired;
after part of the steel sheet piles sink to the designed elevation, beginning to repair the steel bars separated by the bottom plate steel sheet pile grooves, and pouring concrete; and gradually repairing the steel bars separated by the bottom plate steel sheet pile groove along with the sinking of the steel sheet pile, performing waterproof treatment and pouring concrete until the bottom plate steel sheet pile groove is repaired.
3. The construction method according to claim 2, wherein during sinking of the steel sheet pile, the length of the top plate steel sheet pile groove which is not repaired is less than 6 meters, and the length of the bottom plate steel sheet pile groove which is not repaired is less than 6 meters.
4. The construction method according to claim 2 or 3,
before plugging a gap between a bottom plate upright post pile hole and an upright post pile, firstly performing waterproof treatment;
before plugging a bottom plate uplift pile hole, firstly performing waterproof treatment;
before plugging the gap between the bottom plate steel sheet pile groove and the outer side surface of the steel sheet pile, firstly, performing waterproof treatment.
5. The construction method according to claim 2 or 3,
when repairing the top plate upright post pile hole and the bottom plate upright post pile hole, connecting the reinforcing steel bars cut off by the top plate upright post pile hole to the upright post pile, and connecting the reinforcing steel bars cut off by the bottom plate upright post pile hole to the upright post pile;
when the top plate steel sheet pile groove and the bottom plate steel sheet pile groove are repaired, the steel bars cut by the top plate steel sheet pile groove are connected to the steel sheet pile, and the steel bars cut by the bottom plate steel sheet pile groove are connected to the steel sheet pile.
6. The construction method according to claim 1,
adopt stagnant water steel sheet to carry out water repellent treatment to roof column stake hole, the step is as follows: firstly, processing the inner edge of a top plate upright post hole, finishing the inner edge of the top plate upright post hole into a step shape while planing out broken ends of reinforcing steel bars, and then welding one end of a water stop steel plate on the upright post, and lapping the other end of the water stop steel plate on a step surface of the inner edge of the top plate upright post hole;
adopting the stagnant water steel sheet to carry out water repellent treatment to the roof sheet steel sheet stake groove, the step is as follows: firstly, processing the inner edge of a top plate steel sheet pile groove, finishing the inner edge of the top plate steel sheet pile groove into a step shape while planing out a broken end of a steel bar, and then welding one end of a water stop steel plate on a steel sheet pile, and lapping the other end of the water stop steel plate on a step surface of the inner edge of the top plate steel sheet pile groove;
adopting the water stop steel plate to carry out waterproof treatment on the gap between the outer side surfaces of the bottom plate steel sheet pile groove and the steel sheet pile, and comprising the following steps of: firstly, the inner edge of the bottom plate steel sheet pile groove is processed, the inner edge of the bottom plate steel sheet pile groove is trimmed into a step shape while a broken end of a steel bar is planed, then one end of a water stop steel plate is welded on the steel sheet pile, and the other end of the water stop steel plate is lapped on the step surface of the inner edge of the bottom plate steel sheet pile groove.
7. The construction method according to claim 1, wherein an interlayer is constructed by using an original bottom plate of a basement in the building envelope as a middle plate.
8. The construction method according to claim 1,
when the number of the basement layers in the construction area is 2 or 3,
before sinking the upright post pile, firstly, arranging a floor upright post pile hole which is vertically opposite to the top plate upright post pile hole and the bottom plate upright post pile hole on a middle floor of the basement, and then sinking the upright post pile;
before sinking the uplift pile, firstly, arranging a floor uplift pile hole which is opposite to the top plate uplift pile hole and the bottom plate uplift pile hole in the middle floor of the basement, and then sinking the uplift pile;
before sinking the steel sheet pile, firstly, arranging a floor steel sheet pile groove which is vertically opposite to the top plate steel sheet pile groove and the bottom plate steel sheet pile groove on a middle floor of the basement, and then sinking the steel sheet pile; simultaneously repairing the steel bars which face the outer side of the steel sheet pile and are separated by the floor slab steel sheet pile groove, performing waterproof treatment on a gap between the floor slab steel sheet pile groove and the outer side face of the steel sheet pile, and pouring concrete to seal the gap between the floor slab steel sheet pile groove and the outer side face of the steel sheet pile so as to connect the steel sheet pile on the middle floor slab;
and after the connection between the steel sheet pile and the middle floor slab is completed, the middle floor slab of the basement in the enclosure structure is dismantled before earthwork in the enclosure structure is excavated.
9. The construction method according to any one of claims 1 to 3 or 6 to 8,
when the number of the layers of the basement in the construction area is 2 or 3, at least one layer of intermediate floor slab is reserved;
before sinking the upright post pile, firstly, arranging a floor upright post pile hole which is vertically opposite to the top plate upright post pile hole and the bottom plate upright post pile hole on a middle floor of the basement, and then sinking the upright post pile;
before sinking the uplift pile, firstly, arranging a floor uplift pile hole which is opposite to the top plate uplift pile hole and the bottom plate uplift pile hole in the middle floor of the basement, and then sinking the uplift pile;
before sinking the steel sheet pile, firstly, arranging a floor steel sheet pile groove which is vertically opposite to the top plate steel sheet pile groove and the bottom plate steel sheet pile groove on a middle floor of the basement, and then sinking the steel sheet pile; simultaneously repairing the steel bars which face the outer side of the steel sheet pile and are separated by the floor slab steel sheet pile groove, performing waterproof treatment on a gap between the floor slab steel sheet pile groove and the outer side face of the steel sheet pile, and pouring concrete to seal the gap between the floor slab steel sheet pile groove and the outer side face of the steel sheet pile so as to connect the steel sheet pile on the middle floor slab;
the remaining intermediate floor is treated as follows: repairing the steel bars towards the inner side of the steel sheet pile and separated by the floor steel sheet pile groove, performing waterproof treatment on the gap between the floor steel sheet pile groove and the inner side face of the steel sheet pile, and pouring concrete to seal the gap between the floor steel sheet pile groove and the inner side face of the steel sheet pile.
10. The construction method according to claim 4,
when the number of the layers of the basement in the construction area is 2 or 3, at least one layer of intermediate floor slab is reserved;
before sinking the upright post pile, firstly, arranging a floor upright post pile hole which is vertically opposite to the top plate upright post pile hole and the bottom plate upright post pile hole on a middle floor of the basement, and then sinking the upright post pile;
before sinking the uplift pile, firstly, arranging a floor uplift pile hole which is opposite to the top plate uplift pile hole and the bottom plate uplift pile hole in the middle floor of the basement, and then sinking the uplift pile;
before sinking the steel sheet pile, firstly, arranging a floor steel sheet pile groove which is vertically opposite to the top plate steel sheet pile groove and the bottom plate steel sheet pile groove on a middle floor of the basement, and then sinking the steel sheet pile; simultaneously repairing the steel bars which face the outer side of the steel sheet pile and are separated by the floor slab steel sheet pile groove, performing waterproof treatment on a gap between the floor slab steel sheet pile groove and the outer side face of the steel sheet pile, and pouring concrete to seal the gap between the floor slab steel sheet pile groove and the outer side face of the steel sheet pile so as to connect the steel sheet pile on the middle floor slab;
the remaining intermediate floor is treated as follows: repairing the steel bars towards the inner side of the steel sheet pile and separated by the floor steel sheet pile groove, performing waterproof treatment on the gap between the floor steel sheet pile groove and the inner side face of the steel sheet pile, and pouring concrete to seal the gap between the floor steel sheet pile groove and the inner side face of the steel sheet pile.
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| CN109610442A (en) * | 2018-12-19 | 2019-04-12 | 五冶集团上海有限公司 | Constructing device and its methods and applications after a kind of basement wet spraying pile |
| CN110565981A (en) * | 2019-09-11 | 2019-12-13 | 上海建工一建集团有限公司 | storey-adding method and structure for underground space of existing building |
| CN111021362B (en) * | 2019-12-24 | 2021-06-04 | 陕西建工基础建设集团有限公司 | Construction method for replacing engineering pile with deep foundation pit retaining wall pile and foundation pit supporting structure |
| CN113293786A (en) * | 2021-07-07 | 2021-08-24 | 上海市城市建设设计研究总院（集团）有限公司 | Underground shaft type structure foundation with parking garage function and construction method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06173278A (en) * | 1992-12-04 | 1994-06-21 | Shimizu Corp | Foundation structure for building structure |
| CN1693591A (en) * | 2005-06-09 | 2005-11-09 | 上海市城市建设设计研究院 | Construction method of reconstrating existant underground space into subway station |
| CN103195085A (en) * | 2013-04-02 | 2013-07-10 | 东南大学 | Downward story-adding basement and construction method thereof |
| CN104532957A (en) * | 2014-12-08 | 2015-04-22 | 江苏中南建筑产业集团有限责任公司 | Inversed construction method for adding basement in existing building |
| CN103437567B (en) * | 2013-08-30 | 2015-06-10 | 山东建筑大学 | Method for supporting existing building underground added storey through original pile foundations |
| CN106245927A (en) * | 2016-07-19 | 2016-12-21 | 山东建筑大学 | A kind of frame structure building underground that is applicable to increases method and the building of layer |
-
2017
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06173278A (en) * | 1992-12-04 | 1994-06-21 | Shimizu Corp | Foundation structure for building structure |
| CN1693591A (en) * | 2005-06-09 | 2005-11-09 | 上海市城市建设设计研究院 | Construction method of reconstrating existant underground space into subway station |
| CN103195085A (en) * | 2013-04-02 | 2013-07-10 | 东南大学 | Downward story-adding basement and construction method thereof |
| CN103437567B (en) * | 2013-08-30 | 2015-06-10 | 山东建筑大学 | Method for supporting existing building underground added storey through original pile foundations |
| CN104532957A (en) * | 2014-12-08 | 2015-04-22 | 江苏中南建筑产业集团有限责任公司 | Inversed construction method for adding basement in existing building |
| CN106245927A (en) * | 2016-07-19 | 2016-12-21 | 山东建筑大学 | A kind of frame structure building underground that is applicable to increases method and the building of layer |
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