CN109403344A - A kind of truss-like double-row pile cement soil wall foundation pit enclosure structure and its construction method - Google Patents
A kind of truss-like double-row pile cement soil wall foundation pit enclosure structure and its construction method Download PDFInfo
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- CN109403344A CN109403344A CN201811418013.5A CN201811418013A CN109403344A CN 109403344 A CN109403344 A CN 109403344A CN 201811418013 A CN201811418013 A CN 201811418013A CN 109403344 A CN109403344 A CN 109403344A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material
-
- 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
- E02D27/16—Foundations formed of separate piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/02—Retaining or protecting walls
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
-
- 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
- E02D7/18—Placing by vibrating
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- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Piles And Underground Anchors (AREA)
Abstract
A kind of truss-like double-row pile cement soil wall foundation pit enclosure structure, including the double pile element of one group of truss-like and soil cement water-stop curtain；The soil cement water-stop curtain is arranged around foundation pit and there are spacing between margin of foundation pit；One group of double pile element of truss-like is arranged along margin of foundation pit, parallel interval；The double pile element of every truss-like is truss structure, including heel row single armed steel-pipe pile, front-seat single armed steel-pipe pile, horizontal connecting plate and oblique connecting plate；Heel row single armed steel-pipe pile is plugged in soil cement water-stop curtain, front-seat single armed steel-pipe pile is plugged in the soil body, is detachably connected respectively with the steel-pipe pile of corresponding side close to the both ends of stiffening plate described at marginal position, and the bottom edge of stiffening plate whittles to form cutting edge, so that the double pile element of truss-like is sunk in the soil body.It is not environmentally small and the technical issues of not can be effectively controlled Support Deformation with waste of material and fashioned iron, steel sheet pile enclosure structure bending stiffness that the present invention solves traditional concrete building enclosure construction.
Description
Technical field
The present invention relates to foundation field, especially a kind of truss-like double-row pile cement soil wall foundation pit enclosure structure and its
Construction method.
Background technique
The building enclosure of deep basal pit is divided from material can be divided into concrete building enclosure and steel building enclosure, existing mixed
Although the advantages of solidifying fortifield village's protection structure has rigidity big, is conducive to Deformation control, there are construction slurry pollution environment and foundation pits
The drawbacks of interim building enclosure is recyclable, waste of material.Although the steel sheet pile in steel building enclosure can recycle, also it is not present
Mud contamination problem, but the rigidity of supporting construction is small, is unfavorable for deformation control of foundation pit, and construction is limited by formation condition；And SMW
The fashioned iron cement soil wall that engineering method, TRD engineering method and CSM engineering method are formed, although having earth-retaining water stopping function, in these engineering methods
Fashioned iron will be fully embedded among cement-soil pile, and section is limited, and bearing capacity and stiffness is limited.It can be seen that existing fashioned iron cement soil wall, steel
The rigidity of sheet pile etc., building enclosure is smaller, and bearing capacity is also low, is unfavorable for the carrying and Deformation control of support system.
Summary of the invention
The object of the present invention is to provide a kind of truss-like double-row pile cement soil wall foundation pit enclosure structure and its construction methods,
It is not environmentally small with waste of material and fashioned iron, steel sheet pile enclosure structure bending stiffness to solve traditional concrete building enclosure construction
Not the technical issues of not can be effectively controlled Support Deformation.
To achieve the above object, the present invention adopts the following technical scheme that.
A kind of truss-like double-row pile cement soil wall foundation pit enclosure structure, is arranged in the soil body around foundation pit；It include one
The double pile element of group truss-like and soil cement water-stop curtain；The soil cement water-stop curtain is arranged around foundation pit and and foundation pit
There are spacing between edge；The soil cement water-stop curtain is made of one group of cement mixing method, adjacent cement mixing method occlusion
Setting；One group of double pile element of truss-like is arranged along margin of foundation pit, parallel interval；Wherein, the double pile element of every truss-like
It include heel row single armed steel-pipe pile, front-seat single armed steel-pipe pile, horizontal connecting plate and oblique connecting plate for truss structure；After described
Row's single armed steel-pipe pile is plugged in soil cement water-stop curtain, and the front row single armed steel-pipe pile is plugged in the soil body, close to margin location
Set place；The horizontal connecting plate has one group, vertically parallel interval is connected to front-seat single armed steel-pipe pile and heel row single armed steel-pipe pile
Between；The oblique connecting plate has one group, oblique is respectively connected between neighbouring horizontal connecting plate；In the water of lowest part
Horizontal stiffening plate is also connected with below flushconnection plate；The both ends of the stiffening plate are removable with the steel-pipe pile of corresponding side respectively
Connection is unloaded, and the bottom edge of stiffening plate whittles to form cutting edge, so that the double pile element of truss-like is sunk in the soil body.
Preferably, the spacing between the soil cement water-stop curtain and margin of foundation pit be 2~3 times of front-seat diameter of steel tube or
2~3 times of person's heel row diameter of steel tube；Spacing between the double pile element of adjacent truss formula is the 1.5~2.5 of front-seat diameter of steel tube
Times or 1.5~2.5 times of heel row diameter of steel tube.
Preferably, the front-seat single armed steel-pipe pile and the line of heel row single armed steel-pipe pile and the edge-perpendicular of the soil body；Wherein,
Front-seat single armed steel-pipe pile is made of front-seat steel pipe and the first connecting plate, and the first connecting plate is vertically connected on the outer of front-seat steel pipe
On wall, towards heel row single armed steel-pipe pile side；Heel row single armed steel-pipe pile is made of heel row steel pipe and the second connecting plate, and second
Connecting plate is vertically connected on the outer wall of heel row steel pipe, towards front-seat single armed steel-pipe pile side.
Preferably, the outer diameter of the front-seat steel pipe and heel row steel pipe is not less than 600mm, front-seat steel pipe and heel row steel pipe
Wall thickness is not less than 8mm；The diameter of the cement mixing method is greater than the diameter of heel row steel pipe.
Preferably, first connecting plate is vertically elongated is arranged on front-seat outer wall of steel pipe, on the first connecting plate, edge
Vertical be spaced apart is equipped with the first connecting hole；Second connecting plate is vertically elongated to be arranged on heel row outer wall of steel pipe, second
On connecting plate, vertically be spaced apart be equipped with the second connecting hole；Described horizontal connecting plate one end is by being threaded through in the first connecting hole
Bolt be detachably connected with the first connecting plate, the horizontal connecting plate other end passes through the bolt being threaded through in the second connecting hole and
Two connecting plates are detachably connected.
Preferably, the width of first connecting plate is 150mm~200mm, with a thickness of 10mm~15mm, the first connecting plate
Bottom, close to front-seat steel pipe side be equipped with wedge angle；The width of second connecting plate be 150mm~200mm, with a thickness of 10mm~
15mm, the bottom of the second connecting plate are equipped with wedge angle close to heel row steel pipe side.
Preferably, the width of the horizontal connecting plate is 200~300mm, with a thickness of 10mm~15mm；The stiffening plate
Width is 1.5 times of horizontal connection board width, with a thickness of 15~22mm；The width of the oblique connecting plate is 200~300mm,
With a thickness of 10mm~15mm.
A kind of construction method of truss-like double-row pile cement soil wall foundation pit enclosure structure, including steps are as follows.
Step 1, according to the hydrogeologic condition of construction site, the cutting depth of foundation pit, surrounding enviroment and site condition,
The size for determining various components in the double pile element of truss-like is calculated by design, and carries out factory of component processing, is then transported
To construction site.
Step 2 identifies the position of building enclosure along foundation pit periphery surveying setting-out.
Step 3 assembles the various components of the double pile element of truss-like at the construction field (site), is assembled into one group of truss
The double pile element of formula.
Step 4, soil cement water-stop curtain of constructing: one group of cement mixing method of successively constructing by design requirement, one group of cement
Native mixing pile is arranged along the edge of foundation pit, and the spacing between margin of foundation pit be 2~3 times of front-seat diameter of steel tube or after
2~3 times for arranging steel-pipe pile diameter, make mutually to be engaged between adjacent cement mixing method.
Step 5, at the cement mixing method position constructed, successively pile foundation in place, lifting, positioning truss-like are double
Pile element is located at heel row single armed steel-pipe pile at cement mixing method overlap joint occlusal position, and front-seat single armed steel-pipe pile is located at base
At pit edge positions.
Step 6, before the soil cement final set for the cement mixing method constructed, by exempting from synchronous vibration hammer for truss-like
Double pile element vibration is sunk in stratum；During vibration is heavy, horizontal connecting plate keeps horizontal.
Preferably, when the double pile element of truss-like is spliced by multiple truss-like double-row pile elementary sections, in step 6,
When previous section truss-like double-row pile elementary section vibration sinks to upper end away from the earth's surface position 1.0~1.5m, stops vibrating and remove vibration
Hammer；Then later section truss-like double-row pile elementary section is welded, after the completion of welding, then the fixture of vibration hammer is clamped in respectively latter
On the front-seat single armed steel-pipe pile and heel row single armed steel-pipe pile for saving truss-like double-row pile elementary section, it is heavy to continue vibration；Until by truss-like
All segments vibration of double pile element sinks to position.
It preferably, can when the settling velocity degree that shakes in the soil body around foundation pit when the double pile element of truss-like is less than 5mm/ minutes
Before truss-like double-row pile shakes heavy construction, on the soil body, pre- at the position of horizontal connecting plate on the corresponding double pile element of truss-like
If circular hole, so that the vibration of the double pile element of truss-like is heavy；Wherein, the diameter of circular hole is 8mm~12mm.
Compared with prior art the invention has the characteristics that and beneficial effect.
1, in order to overcome in current deep-foundation pit engineering, the concrete building enclosure such as campshed, diaphram wall construct not environmentally,
The low bearing capacities such as waste of material and fashioned iron, steel sheet pile, building enclosure bending stiffness is small, not can be effectively controlled Support Deformation etc.
Defect, the present invention propose a kind of truss-like double-row pile cement soil wall foundation pit enclosure structure, and Water And Earth Pressures are by truss-like double-row pile list
Member undertakes；The building enclosure is formed by the heel row single armed steel-pipe pile occlusion cement mixing method of the double pile element of truss-like, truss
The single armed steel-pipe pile that the double pile element of formula is relatively large in diameter by forward and backward two rows, which is connected by horizontal connecting plate with oblique connecting plate, to be formed
Truss structure, significantly improves stress of the building enclosure under Water And Earth Pressures effect, and bearing capacity is greatly improved, can keep off
Soil again can sealing, and truss structure anti-side rigidity significantly improves, and is conducive to the Deformation control of foundation pit supporting system.
2, the truss-like double-row pile cement soil wall foundation pit enclosure structure in the present invention, double-row pile is truss structure, carrying
Power is high, and anti-side rigidity is big, under equivalent variations control condition, advantageously reduces inner support and anchor cable setting quantity, also helps
Reduce construction process, remarkable in economical benefits.
3, the double pile element of truss-like in the present invention is sunk in stratum by exempting from synchronous vibration hammer vibration, is not necessarily to preparatory grooving,
No slurry coat method pollutes environment, construction site civilization environmental protection.
4, the double pile element of cement mixing method and truss-like in the present invention, which overlaps, to be engaged, and when stratum deformation, rigidity is very
The double pile element of big truss-like forms fulcrum to soil cement water-stop curtain, efficiently reduces the internal force of soil cement water-stop curtain
And deformation, significantly reduce the cracking of soil cement water-stop curtain and the risk of lose effectiveness in sealing.
5, the truss-like double-row pile cement soil wall foundation pit enclosure structure in the present invention can pass through after the completion of foundation pit use
The double pile element of truss-like is extracted in vibration, recycles all components of the double pile element of truss-like, and is repeatedly recycled, energy-saving
Material, low-carbon environment-friendly.
6, the stiffening plate of the double pile element of truss-like is the biggish reinforcement steel plate of width, and the bottom edge of stiffening plate in the present invention
It whittles to form cutting edge, facilitates the injection stratum in the case where vibration hammer acts on.
Detailed description of the invention
The present invention will be further described in detail with reference to the accompanying drawing.
Fig. 1 is the planar structure schematic diagram of truss-like double-row pile cement soil wall foundation pit enclosure structure of the invention.
Fig. 2 is the structural schematic diagram of the double pile element of truss-like in the present invention.
Fig. 3 is the structural schematic diagram of the double pile element of truss-like in the present invention being arranged in soil cement water-stop curtain.
Fig. 4 is the structural schematic diagram of front-seat single armed steel-pipe pile in the present invention.
Fig. 5 is the structural schematic diagram of heel row single armed steel-pipe pile in the present invention.
Fig. 6 is the structural schematic diagram of stiffening plate in the present invention.
Appended drawing reference: the 1- soil body, the double pile element of 2- truss-like, the front row 2.1- single armed steel-pipe pile, 2.1.1- are front-seat
Steel pipe, the first connecting plate of 2.1.2-, 2.2- heel row single armed steel-pipe pile, 2.2.1- heel row steel pipe, the second connecting plate of 2.2.2-,
The oblique connecting plate of 2.3- horizontal connecting plate, 2.4-, 2.5- stiffening plate, 3- soil cement water-stop curtain, 3.1- Soil-cement
Stake, the first connecting hole of 4-, the second connecting hole of 5-, 6- circular hole.
Specific embodiment
As shown in figures 1 to 6, this truss-like double-row pile cement soil wall foundation pit enclosure structure, is arranged in the soil body around foundation pit
In 1；The truss-like double-row pile cement soil wall foundation pit enclosure structure includes the double pile element 2 of one group of truss-like and soil cement sealing
Curtain 3；The soil cement water-stop curtain 3 is arranged around foundation pit and there are spacing between margin of foundation pit；The soil cement sealing
Curtain 3 is made of one group of cement mixing method 3.1, the adjacent occlusion of cement mixing method 3.1 setting；One group of truss-like double-row pile list
Member 2 is arranged along margin of foundation pit, parallel interval；Wherein, the double pile element 2 of every truss-like is truss structure, includes heel row
Single armed steel-pipe pile 2.2, front-seat single armed steel-pipe pile 2.1, horizontal connecting plate 2.3 and oblique connecting plate 2.4；The heel row single armed steel pipe
Stake 2.2 is plugged in soil cement water-stop curtain 3, and the front row single armed steel-pipe pile 2.1 is plugged in the soil body 1, close to marginal position
Place；The horizontal connecting plate 2.3 has one group, vertically parallel interval is connected to front-seat single armed steel-pipe pile 2.1 and heel row single armed steel
Between tubular pole 2.2；The oblique connecting plate 2.4 have one group, respectively it is oblique be connected to neighbouring horizontal connecting plate 2.3 it
Between；Horizontal stiffening plate 2.5 is also connected in the lower section of the horizontal connecting plate 2.3 of lowest part；The both ends of the stiffening plate 2.5 point
It is not detachably connected with the steel-pipe pile of corresponding side, and the bottom edge of stiffening plate 2.5 whittles to form cutting edge, so that truss-like is double
Campshed unit 2 is sunk in the soil body 1.
In the present embodiment, the double pile element 2 of one group of truss-like and soil cement water-stop curtain 3 overlap joint be engaged formation collect earth-retaining and
The closed foundation pit enclosure structure that sealing is integrated, can earth-retaining again can sealing, wherein it is each in the double pile element 2 of truss-like
A component is made of fashioned iron.
In the present embodiment, the spacing between the soil cement water-stop curtain 3 and margin of foundation pit is front-seat steel pipe 2.1.1 diameter
2~3 times or 2~3 times of heel row steel pipe 2.2.1 diameter；Spacing between the double pile element 2 of adjacent truss formula is front-seat steel
1.5~2.5 times of 1.5~2.5 times of pipe 2.1.1 diameter or heel row steel pipe 2.2.1 diameter.
In the present embodiment, the front row single armed steel-pipe pile 2.1 and the line of heel row single armed steel-pipe pile 2.2 and the side of the soil body 1
Marginal lappet is straight；Wherein, front-seat single armed steel-pipe pile 2.1 is made of front-seat steel pipe 2.1.1 and the first connecting plate 2.1.2, and first connects
Fishplate bar 2.1.2 is vertically connected on the outer wall of front-seat steel pipe 2.1.1, towards 2.2 side of heel row single armed steel-pipe pile；Heel row single armed steel
Tubular pole 2.2 is made of heel row steel pipe 2.2.1 and the second connecting plate 2.2.2, and the second connecting plate 2.2.2 is vertically connected on heel row
On the outer wall of steel pipe 2.2.1, towards front-seat 2.1 side of single armed steel-pipe pile.
In the present embodiment, the outer diameter of the front row steel pipe 2.1.1 and heel row steel pipe 2.2.1 is not less than 600mm, front-seat steel
The wall thickness of pipe 2.1.1 and heel row steel pipe 2.2.1 are not less than 8mm；The diameter of the cement mixing method 3.1 is greater than heel row steel pipe
2.2.1 diameter.
In the present embodiment, the first connecting plate 2.1.2 is vertically elongated to be arranged on front-seat steel pipe 2.1.1 outer wall,
On first connecting plate 2.1.2, vertically be spaced apart be equipped with the first connecting hole 4；The second connecting plate 2.2.2 is vertically elongated to be set
Set on heel row steel pipe 2.2.1 outer wall, on the second connecting plate 2.2.2, vertically be spaced apart be equipped with the second connecting hole 5；It is described
2.3 one end of horizontal connecting plate is detachably connected by the bolt being threaded through in the first connecting hole 4 with the first connecting plate 2.1.2, water
2.3 other end of flushconnection plate is detachably connected by the bolt being threaded through in the second connecting hole 5 with the second connecting plate 2.2.2.
In the present embodiment, the width of the first connecting plate 2.1.2 is 150mm~200mm, with a thickness of 10mm~15mm,
The bottom of first connecting plate 2.1.2 is equipped with wedge angle close to the front-seat side steel pipe 2.1.1；The width of second connecting plate 2.2.2 is
150mm~200mm, with a thickness of 10mm~15mm, the bottom of the second connecting plate 2.2.2 is equipped with close to the side heel row steel pipe 2.2.1
Wedge angle.
In the present embodiment, the setting of 4 consistency from top to bottom of the first connecting hole on the first connecting plate 2.1.2, aperture be 23mm~
25mm；5 consistency from top to bottom of the second connecting hole setting on second connecting plate 2.2.2, aperture are 23mm~25mm.
In the present embodiment, the width of the horizontal connecting plate 2.3 is 200~300mm, with a thickness of 10mm~15mm；It is described
The width of stiffening plate 2.5 is 1.5 times of 2.3 width of horizontal connecting plate, with a thickness of 15~22mm；The oblique connecting plate 2.4
Width is 200~300mm, with a thickness of 10mm~15mm.
In the present embodiment, the stiffening plate 2.5 is provided with one, the length of the length and stiffening plate 2.5 of each horizontal connecting plate 2.3
It is equal.
The construction method of this truss-like double-row pile cement soil wall foundation pit enclosure structure, including steps are as follows.
Step 1, according to the hydrogeologic condition in proposed place, excavation of foundation pit depth, surrounding enviroment, site condition etc. are led to
It crosses design and calculates and determine that front row steel pipe 2.1.1 and the diameter of heel row steel pipe 2.2.1, stake are long in the double pile element 2 of truss-like, level
Connecting plate 2.3, oblique connecting plate 2.4, the width of stiffening plate 2.5 and length, and factory of component processing is carried out as needed, transport
To construction site.
Step 2 identifies the position of building enclosure along foundation pit periphery surveying setting-out.
The various components of the double pile element 2 of truss-like are assembled at the construction field (site), are assembled into one group of truss by step 3
The double pile element 2 of formula.
Step 4, soil cement water-stop curtain 3 of constructing: one group of cement mixing method 3.1 of successively constructing by design requirement, one group
Cement mixing method 3.1 is arranged along the edge of foundation pit, and the spacing between margin of foundation pit is front-seat steel pipe 2.1.1 diameter
2~3 times of 2~3 times or 2.2.1 diameters of heel row steel pipe, make mutually to be engaged between adjacent cement mixing method 3.1.
Step 5, at 3.1 position of cement mixing method constructed, successively pile foundation in place, lifting, positioning truss-like are double
Campshed unit 2 is located at heel row single armed steel-pipe pile 2.2 and overlaps at occlusal position with cement mixing method 3.1, front-seat single armed steel pipe
Stake 2.1 is located at margin of foundation pit position.
Step 6, before the soil cement final set for the cement mixing method 3.1 constructed, by exempting from synchronous vibration hammer for truss
The double vibration of pile element 2 of formula is sunk in stratum；During vibration is heavy, horizontal connecting plate 2.3 keeps horizontal.
In the present embodiment, when the double pile element 2 of truss-like is spliced by multiple truss-like double-row pile elementary sections, step
In six, when previous section truss-like double-row pile elementary section vibration sinks to upper end away from the earth's surface position 1.0~1.5m, stop vibrating and removing
Vibration hammer；Then later section truss-like double-row pile elementary section is welded, after the completion of welding, then the fixture of vibration hammer is clamped in respectively
On the front-seat single armed steel-pipe pile 2.1 and heel row single armed steel-pipe pile 2.2 of later section truss-like double-row pile elementary section, it is heavy to continue vibration；Directly
Position is sunk to by all segments vibration of the double pile element 2 of truss-like.
In the present embodiment, when meeting firm hard formation, the double pile element 2 of truss-like shakes settling velocity degree in the soil body 1 around foundation pit
When less than 5mm/ minutes, on the soil body 1, water on the double pile element 2 of truss-like can be corresponded to before truss-like double-row pile shakes heavy construction
Circular hole 6 is preset at the position of flushconnection plate 2.3, so that the vibration of the double pile element 2 of truss-like is heavy；Wherein, the diameter of circular hole 6 is
8mm~12mm.
Above-described embodiment is not the exhaustion of specific embodiment, can also there is other embodiments, and above-described embodiment purpose exists
In illustrating the present invention, the protection scope being not intended to limit the present invention, all applications from simple change of the present invention all fall within this
In the protection scope of invention.
Claims (10)
1. a kind of truss-like double-row pile cement soil wall foundation pit enclosure structure, is arranged in the soil body around foundation pit (1)；Its feature exists
In: it include one group of double pile element of truss-like (2) and soil cement water-stop curtain (3)；The soil cement water-stop curtain (3) surrounds
Foundation pit setting and there are spacing between margin of foundation pit；The soil cement water-stop curtain (3) is by one group of cement mixing method
(3.1) it constitutes, adjacent cement mixing method (3.1) occlusion setting；One group of double pile element of truss-like (2) along margin of foundation pit,
Parallel interval arrangement；Wherein, the double pile element of every truss-like (2) is truss structure, includes heel row single armed steel-pipe pile
(2.2), front-seat single armed steel-pipe pile (2.1), horizontal connecting plate (2.3) and oblique connecting plate (2.4)；The heel row single armed steel-pipe pile
(2.2) it is plugged in soil cement water-stop curtain (3), the front row single armed steel-pipe pile (2.1) is plugged in the soil body (1), by near side (ns)
At edge position；The horizontal connecting plate (2.3) have one group, vertically parallel interval be connected to front-seat single armed steel-pipe pile (2.1) with
Between heel row single armed steel-pipe pile (2.2)；The oblique connecting plate (2.4) has one group, oblique is respectively connected to neighbouring water
Between flushconnection plate (2.3)；Horizontal stiffening plate (2.5) are also connected with below the horizontal connecting plate (2.3) of lowest part；Institute
The both ends for stating stiffening plate (2.5) are detachably connected with the steel-pipe pile of corresponding side respectively, and the bottom edge of stiffening plate (2.5) is gradually cut
Thin formation cutting edge, so that the double pile element of truss-like (2) is sunk in the soil body (1).
2. truss-like double-row pile cement soil wall foundation pit enclosure structure according to claim 1, it is characterised in that: the cement
Spacing between native water-stop curtain (3) and margin of foundation pit is 2~3 times or heel row steel pipe of front-seat steel pipe (2.1.1) diameter
2~3 times of (2.2.1) diameter；Spacing between the double pile element of adjacent truss formula (2) is front-seat steel pipe (2.1.1) diameter
1.5~2.5 times of 1.5~2.5 times or heel row steel pipe (2.2.1) diameter.
3. truss-like double-row pile cement soil wall foundation pit enclosure structure according to claim 1, it is characterised in that: the front row
The edge-perpendicular of the line and the soil body (1) of single armed steel-pipe pile (2.1) and heel row single armed steel-pipe pile (2.2)；Wherein, front-seat single armed steel
Tubular pole (2.1) is made of front-seat steel pipe (2.1.1) and the first connecting plate (2.1.2), and the first connecting plate (2.1.2) vertically connects
It connects on the outer wall of front-seat steel pipe (2.1.1), towards heel row single armed steel-pipe pile (2.2) side；Heel row single armed steel-pipe pile (2.2) by
Heel row steel pipe (2.2.1) and the second connecting plate (2.2.2) are constituted, and the second connecting plate (2.2.2) is vertically connected on heel row steel
It manages on the outer wall of (2.2.1), towards front-seat single armed steel-pipe pile (2.1) side.
4. truss-like double-row pile cement soil wall foundation pit enclosure structure according to claim 3, it is characterised in that: the front row
The outer diameter of steel pipe (2.1.1) and heel row steel pipe (2.2.1) is not less than 600mm, front-seat steel pipe (2.1.1) and heel row steel pipe
The wall thickness of (2.2.1) is not less than 8mm；The diameter of the cement mixing method (3.1) is straight greater than heel row steel pipe (2.2.1's)
Diameter.
5. truss-like double-row pile cement soil wall foundation pit enclosure structure according to claim 3, it is characterised in that: described first
Connecting plate (2.1.2) is vertically elongated to be arranged on front-seat steel pipe (2.1.1) outer wall, on the first connecting plate (2.1.2), along perpendicular
The first connecting hole (4) are equipped with to being spaced apart；Second connecting plate (2.2.2) is vertically elongated to be arranged in heel row steel pipe
On (2.2.1) outer wall, on the second connecting plate (2.2.2), vertically be spaced apart be equipped with the second connecting hole (5)；The level is even
Fishplate bar (2.3) one end is detachably connected by the bolt being threaded through in the first connecting hole (4) with the first connecting plate (2.1.2), water
Flushconnection plate (2.3) other end is detachably connected by the bolt being threaded through in the second connecting hole (5) with the second connecting plate (2.2.2)
It connects.
6. truss-like double-row pile cement soil wall foundation pit enclosure structure according to claim 5, it is characterised in that: described first
The width of connecting plate (2.1.2) is 150mm~200mm, and with a thickness of 10mm~15mm, the bottom of the first connecting plate (2.1.2) is leaned on
Nearby the row steel pipe side (2.1.1) is equipped with wedge angle；The width of second connecting plate (2.2.2) is 150mm~200mm, with a thickness of
10mm~15mm, the bottom of the second connecting plate (2.2.2) are equipped with wedge angle close to the heel row steel pipe side (2.2.1).
7. truss-like double-row pile cement soil wall foundation pit enclosure structure according to claim 1, it is characterised in that: the level
The width of connecting plate (2.3) is 200mm~300mm, with a thickness of 10mm~15mm；The width of the stiffening plate (2.5) is level
1.5 times of connecting plate (2.3) width, with a thickness of 15mm~22mm；The width of the oblique connecting plate (2.4) be 200mm~
300mm, with a thickness of 10mm~15mm.
8. the construction party of truss-like double-row pile cement soil wall foundation pit enclosure structure described in a kind of any one of claim 1-7
Method, which is characterized in that comprise the following steps that
Step 1 passes through according to the hydrogeologic condition of construction site, the cutting depth of foundation pit, surrounding enviroment and site condition
Design calculates the size for determining various components in the double pile element of truss-like (2), and carries out factory of component processing, then transports
Construction site；
Step 2 identifies the position of building enclosure along foundation pit periphery surveying setting-out；
Step 3 assembles the various components of the double pile element of truss-like (2) at the construction field (site), is assembled into one group of truss-like
Double pile element (2)；
Step 4 is constructed soil cement water-stop curtain (3): one group of cement mixing method (3.1) of successively constructing by design requirement, and one group
Cement mixing method (3.1) is arranged along the edge of foundation pit, and the spacing between margin of foundation pit is that front-seat steel pipe (2.1.1) is straight
2~3 times of 2~3 times of diameter or heel row steel pipe (2.2.1) stake diameter, make mutually to sting between adjacent cement mixing method (3.1)
It closes；
Step 5, at cement mixing method (3.1) position constructed, successively pile foundation in place, lifting, positioning truss-like are double
Pile element (2) is located at heel row single armed steel-pipe pile (2.2) and overlaps at occlusal position with cement mixing method (3.1), front-seat single armed
Steel-pipe pile (2.1) is located at margin of foundation pit position；
Step 6, before the soil cement final set for the cement mixing method (3.1) constructed, by exempting from synchronous vibration hammer for truss-like
Double pile element (2) vibration is sunk in stratum；During vibration is heavy, horizontal connecting plate (2.3) keeps horizontal.
9. the construction method of truss-like double-row pile cement soil wall foundation pit enclosure structure according to claim 8, feature
It is: when the double pile element of truss-like (2) is spliced by multiple truss-like double-row pile elementary sections, in step 6, previous section
When the vibration of truss-like double-row pile elementary section sinks to upper end away from the earth's surface position 1.0~1.5m, stops vibrating and remove vibration hammer；Then
Later section truss-like double-row pile elementary section is welded, after the completion of welding, then the fixture of vibration hammer is clamped in later section truss respectively
On the front-seat single armed steel-pipe pile (2.1) of formula double-row pile elementary section and heel row single armed steel-pipe pile (2.2), it is heavy to continue vibration；Until by purlin
All segments vibration of the double pile element of posture (2) sinks to position.
10. the construction method of truss-like double-row pile cement soil wall foundation pit enclosure structure according to claim 8, feature exist
In: it, can be in truss when the middle vibration settling velocity degree of the soil body (1) of the double pile element of truss-like (2) around foundation pit is less than 5mm/ minutes
Before the heavy construction of formula double-row pile vibration, on the soil body (1), on corresponding the double pile element of truss-like (2) horizontal connecting plate (2.3) position
Locate default circular hole (6), so that the vibration of the double pile element of truss-like (2) is heavy；Wherein, the diameter of circular hole (6) is 8mm~12mm.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110158608A (en) * | 2019-05-22 | 2019-08-23 | 安徽省城建设计研究总院股份有限公司 | A kind of double piling wall |
| CN112861208A (en) * | 2021-01-07 | 2021-05-28 | 青岛理工大学 | Analysis method for converting row pile supporting system into underground continuous wall supporting structure |
| CN113914323A (en) * | 2021-09-28 | 2022-01-11 | 中亿丰建设集团股份有限公司 | Steel pipe grouting type tree root pile construction method for advanced support |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110142550A1 (en) * | 2008-08-14 | 2011-06-16 | Jae Ho Lee | Method for constructing a chair-type, self-supported earth retaining wall |
| CN102286980A (en) * | 2011-07-11 | 2011-12-21 | 福建工大建筑设计院 | Steel truss foundation pit supporting structure |
| CN104532851A (en) * | 2014-12-17 | 2015-04-22 | 北京工业大学 | Recycling assembling type double-row pile and supporting method thereof |
| CN106522242A (en) * | 2016-12-21 | 2017-03-22 | 大连交通大学 | Foundation pit supporting system for subsurface structure close to soft ground stratum and construction method of foundation pit supporting system |
| CN207987930U (en) * | 2018-03-20 | 2018-10-19 | 吉林东煤建筑基础工程公司 | One kind exempting from precipitation foundation pit supporting construction |
| CN209323528U (en) * | 2018-11-26 | 2019-08-30 | 中建一局集团建设发展有限公司 | A kind of truss-like double-row pile cement soil wall foundation pit enclosure structure |
-
2018
- 2018-11-26 CN CN201811418013.5A patent/CN109403344A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110142550A1 (en) * | 2008-08-14 | 2011-06-16 | Jae Ho Lee | Method for constructing a chair-type, self-supported earth retaining wall |
| CN102286980A (en) * | 2011-07-11 | 2011-12-21 | 福建工大建筑设计院 | Steel truss foundation pit supporting structure |
| CN104532851A (en) * | 2014-12-17 | 2015-04-22 | 北京工业大学 | Recycling assembling type double-row pile and supporting method thereof |
| CN106522242A (en) * | 2016-12-21 | 2017-03-22 | 大连交通大学 | Foundation pit supporting system for subsurface structure close to soft ground stratum and construction method of foundation pit supporting system |
| CN207987930U (en) * | 2018-03-20 | 2018-10-19 | 吉林东煤建筑基础工程公司 | One kind exempting from precipitation foundation pit supporting construction |
| CN209323528U (en) * | 2018-11-26 | 2019-08-30 | 中建一局集团建设发展有限公司 | A kind of truss-like double-row pile cement soil wall foundation pit enclosure structure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110158608A (en) * | 2019-05-22 | 2019-08-23 | 安徽省城建设计研究总院股份有限公司 | A kind of double piling wall |
| CN112861208A (en) * | 2021-01-07 | 2021-05-28 | 青岛理工大学 | Analysis method for converting row pile supporting system into underground continuous wall supporting structure |
| CN112861208B (en) * | 2021-01-07 | 2022-08-16 | 青岛理工大学 | Analysis method for converting row pile supporting system into underground continuous wall supporting structure |
| CN113914323A (en) * | 2021-09-28 | 2022-01-11 | 中亿丰建设集团股份有限公司 | Steel pipe grouting type tree root pile construction method for advanced support |
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