CN210288479U - Prefabricated medium plate transportation and installation device of full-composite assembly type reverse subway station - Google Patents
Prefabricated medium plate transportation and installation device of full-composite assembly type reverse subway station Download PDFInfo
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- CN210288479U CN210288479U CN201920607818.8U CN201920607818U CN210288479U CN 210288479 U CN210288479 U CN 210288479U CN 201920607818 U CN201920607818 U CN 201920607818U CN 210288479 U CN210288479 U CN 210288479U
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Abstract
The utility model discloses a prefabricated medium plate mechanized transportation and installation device of full compound assembled top-down construction subway station, wherein: the underground wall is pre-embedded with a steel structure clamping groove at the elevation position of the middle plate, and a prefabricated middle longitudinal beam reserved protruding tongue-and-groove is used for hoisting and placing the prefabricated middle plate; lower clamping grooves which are concave downwards and extend along the longitudinal direction of the subway station are preset in the steel structure clamping grooves and the prefabricated middle longitudinal beam reserved convex tongues and grooves, and upper clamping grooves which are concave upwards and extend along the longitudinal direction of the subway station are preset in corresponding positions at two ends below the prefabricated middle plate; install the slip elevating gear in the gap that lower draw-in groove and last draw-in groove are constituteed, can support the prefabricated medium plate of lift and drive prefabricated medium plate along subway station longitudinal movement. Thereby the difficult transportation of full compound assembled contrary construction subway station prefabricated medium plate and the problem of installation have been solved.
Description
Technical Field
The utility model belongs to underground works especially subway station field, concretely relates to prefabricated medium plate mechanized transportation of full compound fabricated top-down construction subway station and installation device.
Background
The existing underground structure engineering such as a subway station structure has two structural forms, namely an assembled underground structure and a full open cut cast-in-place underground structure, but the existing underground structure engineering has respective defects. In order to overcome these problems, a full-composite fabricated subway station structure has been developed.
However, the following problems exist in the construction process of the fully-composite assembly type subway station:
(1) in the construction process of the full-composite assembly type reverse construction subway station, firstly, the longitudinal beam and the top plate of the station top are hoisted, then, the middle longitudinal beam is completed by adopting a cast-in-place or splicing method, and then, the prefabricated middle plate is hoisted. The prefabricated middle plate needs to be hoisted from a working well and can be assembled only by a series of horizontal and vertical movements, and a good solution is not found at present.
(2) According to calculation, the weight of the single prefabricated middle plate exceeds 10t, the internal space of a station is narrow, and the horizontal transportation and assembly of the prefabricated middle plate are difficult to realize by the existing mechanical trolley. The research and development of the novel mechanical trolley has long period and high cost.
(3) The prefabricated parts are transported and assembled by mechanical equipment, the requirement on the ground flatness is high, the collision between the prefabricated parts and the existing parts caused by the uneven ground can be greatly damaged, and the station soil body is generally soft, so that the use of a mechanical trolley is limited.
In summary, the key technologies to be solved for the fully-composite assembly type subway station include: in the full compound assembled reverse construction subway station, the horizontal transportation and the assembly of prefabricated medium plate.
SUMMERY OF THE UTILITY MODEL
At least one in defect or improvement demand more than prior art, the utility model provides a complete compound assembled contrary operation construction subway station prefabricated medium plate mechanized transportation and installation device has solved the difficult transportation of problem with the installation of the prefabricated medium plate of compound assembled contrary operation construction subway station, especially only utilizes four sliding jack, two sets of spouts, hoist engine and hand wheel can constitute, and equipment is simple, and installation rate is fast, the precision is higher. Saving a large amount of investment and being green and environment-friendly.
For realizing above-mentioned purpose, according to the utility model discloses an aspect provides a complete compound assembly type contrary prefabricated medium plate mechanized transportation and installation device of being under construction subway station, wherein:
the underground wall is pre-embedded with a steel structure clamping groove at the elevation position of the middle plate, and a prefabricated middle longitudinal beam reserved protruding tongue-and-groove is used for hoisting and placing the prefabricated middle plate;
lower clamping grooves which are concave downwards and extend along the longitudinal direction of the subway station are preset in the steel structure clamping grooves and the prefabricated middle longitudinal beam reserved convex tongues and grooves, and upper clamping grooves which are concave upwards and extend along the longitudinal direction of the subway station are preset in corresponding positions at two ends below the prefabricated middle plate;
install the slip elevating gear in the gap that lower draw-in groove and last draw-in groove are constituteed, can support the prefabricated medium plate of lift and drive prefabricated medium plate along subway station longitudinal movement.
Preferably, the sliding lifting device comprises a sliding jack, and the sliding jack comprises a jack, a steel plate and a roller;
the bottom of the jack is fixed on the steel plate and used for supporting the lifting prefabricated middle plate; a plurality of rollers are arranged below the steel plate and used for rolling and walking in the lower clamping groove.
Preferably, the sliding lifting device comprises a traction device, and the traction device comprises a steel strand, a steel bar and a winding mechanism;
a plurality of sliding jacks in the lower clamping groove form a group of sliding jack groups to jointly transport a prefabricated middle plate, the sliding jacks are fixedly connected with each other through steel bars, and the sliding jacks at the two ends of each group are respectively connected with the hoisting mechanisms at the starting end and the ending end through steel strands and used for drawing the sliding jack groups.
Preferably, the hoisting mechanism at the terminal end is an electric hoist.
Preferably, the hoisting mechanism at the initiating end is an electric hoisting machine or a hand wheel, or a parallel combination of the electric hoisting machine and the hand wheel is used alternatively.
Preferably, the jack is provided with a remote control jacking and landing function.
The above-described preferred features may be combined with each other as long as they do not conflict with each other.
Generally, through the utility model discloses above technical scheme who conceives compares with prior art, has following beneficial effect:
1. the utility model discloses a prefabricated medium plate mechanized transportation and installation device of full compound fabricated type reverse construction subway station has solved the difficult transportation of prefabricated medium plate of full compound fabricated type reverse construction subway station and the problem of installation, especially only utilizes four sliding jack, two sets of spouts, hoist engine and hand wheel can constitute, and equipment is simple, and the installation rate is fast, the precision is higher. Saving a large amount of investment and being green and environment-friendly.
2. The utility model discloses a mechanized transportation of full compound fabricated subway station prefabricated medium plate and installation device of doing contrary construction utilizes common equipment combination to solve big problem in the life, has reduced the research and development of large-scale hoist and mount and assemble the platform truck, saves the investment greatly.
3. The utility model discloses a mechanized transportation of full compound fabricated subway station prefabricated medium plate and installation device of doing contrary construction, recycle, the waste of no interim facility all can be realized to the sliding jack and the hoist engine that use.
4. The utility model discloses a prefabricated medium plate mechanized transportation and installation device of full compound assembled contrary construction subway station, medium plate hoist and mount finish the back, in sliding jack's the draw-in groove, usable hoist engine and wire rope pull in the concrete piece and the steel billet of appropriate size, block prefabricated medium plate to can slip casting fixed.
Drawings
Fig. 1 is a schematic structural view of the prefabricated middle plate of the fully-composite assembly type reversed construction subway station mechanized transportation and installation device for consignment of the prefabricated middle plate;
fig. 2 is a schematic plan view of the prefabricated middle plate transferring of the fully-composite assembled type reverse construction subway station prefabricated middle plate mechanized transportation and installation device of the utility model;
fig. 3 is a detailed schematic view of a sliding jack of the fully-composite assembly type reversed construction subway station prefabricated middle plate mechanized transportation and installation device of the utility model;
fig. 4 is the utility model discloses a whole front view schematic diagram of full compound assembled subway station.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. The present invention will be described in further detail with reference to the following embodiments.
As a preferred embodiment of the utility model, as shown in fig. 1-3, the utility model provides a prefabricated medium plate mechanized transportation and installation device of full compound assembled top-down construction subway station, wherein:
the underground wall 1 is pre-embedded with a steel structure clamping groove 2 at the elevation position of the middle plate, and a prefabricated middle longitudinal beam 15 is reserved with a protruding tongue-and-groove for hoisting and placing a prefabricated middle plate 16; lower clamping grooves 105 which are concave and extend along the longitudinal direction of the subway station are preset in the reserved convex tongues and grooves of the steel structure clamping grooves 2 and the prefabricated middle longitudinal beams 15, and upper clamping grooves 104 which are concave and extend along the longitudinal direction of the subway station are preset in corresponding positions of two ends below the prefabricated middle plate 16; a sliding lifting device is arranged in a gap formed by the lower clamping groove 105 and the upper clamping groove 104, and can support and lift the prefabricated middle plate 16 and drive the prefabricated middle plate 16 to move longitudinally along the subway station.
As shown in fig. 1 and 3, the sliding lifting device includes a sliding jack 106, and the sliding jack 106 includes a jack 107, a steel plate 108, a roller 109, and a rolling bearing 110; the bottom of the jack 107 is fixed on a steel plate 108 and is used for supporting the lifting prefabricated middle plate 16; a plurality of rollers 109 are arranged below the steel plate 108 and are used for rolling in the lower clamping groove 105; the roller 109 is supported on a rolling bearing 110.
As shown in fig. 2, the sliding lifting device comprises a traction device, wherein the traction device comprises a steel strand 111, a steel bar 112 and a winding mechanism; the plurality of sliding jacks 106 in the lower clamping groove 105 form a group of sliding jack groups to jointly transport a prefabricated middle plate 16, the sliding jacks 106 are fixedly connected with each other through reinforcing steel bars 112, and the sliding jacks 106 at two ends of each group are respectively connected with the hoisting mechanisms at the starting end and the ending end through steel stranded wires 111 and used for dragging the sliding jack groups.
Preferably, the hoisting mechanism at the terminal end is an electric hoist 113. Preferably, the winding mechanism at the initiation end is an electric winding engine or hand wheel 114, or a parallel combination of an electric winding engine and hand wheel 114 is used alternatively. Preferably, the jack 107 has a function of jacking and landing remotely.
The utility model also provides a transportation and installation method of the mechanized transportation of full compound assembled contrary construction subway station prefabricated medium plate and installation device as before, wherein, including following step:
s1, hoisting the prefabricated middle plate 16 through a working well, placing the prefabricated middle plate on a steel structure clamping groove 2 pre-embedded in the underground wall 1 and a reserved protruding tongue-and-groove of the prefabricated middle longitudinal beam 15, and aligning the upper clamping groove 104 with the lower clamping groove 105; sliding lifting devices are respectively arranged in the lower clamping grooves 105 on the two sides;
s2, adjusting the longitudinal position of the sliding lifting device in a sliding manner, so that the sliding lifting device is positioned right below the upper clamping groove 104 of the prefabricated middle plate 16 and is in a contraction state;
s3, simultaneously lifting the sliding lifting devices on the two sides to the same height, and supporting the prefabricated middle plate 16 to separate from the underground wall 1 and the prefabricated middle longitudinal beam 15;
s4, longitudinally sliding the sliding lifting devices on the two sides simultaneously to transport the prefabricated middle plate 16 to a preset installation position;
s5, lowering the sliding lifting devices on the two sides simultaneously, lowering the prefabricated middle plate 16 down, supporting the prefabricated middle plate on the steel structure clamping grooves 2 pre-embedded in the underground wall 1 and the reserved protruding tongue-and-groove of the prefabricated middle longitudinal beam 15, and completing the transportation and installation of the single prefabricated middle plate 16;
and S6, circulating S1-S5, and finishing the assembly of all other prefabricated middle plates 16.
Preferably, the method further comprises the steps of:
s7, after all the prefabricated middle plates 16 are assembled, on one hand, the sliding lifting device is moved out from the terminal end, on the other hand, a plurality of clamping blocks are sequentially inserted into a gap between the upper clamping groove 104 and the lower clamping groove 105, the prefabricated middle plates 16 are clamped between the underground wall 1 and the prefabricated middle longitudinal beam 15, and then grouting is performed in the gap between the upper clamping groove 104 and the lower clamping groove 105 to prevent the prefabricated middle plates 16 from displacing;
the utility model also provides a transportation and installation method of the mechanized transportation of full compound assembled contrary construction subway station prefabricated medium plate and installation device as before, wherein, including following step:
s1, hoisting the prefabricated middle plate 16 through a working well, placing the prefabricated middle plate on a steel structure clamping groove 2 pre-embedded in the underground wall 1 and a reserved protruding tongue-and-groove of the prefabricated middle longitudinal beam 15, and aligning the upper clamping groove 104 with the lower clamping groove 105; a plurality of sliding jacks 106 are respectively arranged in the lower clamping grooves 105 at the two sides;
s2, slidably adjusting the longitudinal position of the sliding jack 106, so that the sliding jack 106 is located right below the upper slot 104 of the prefabricated middle plate 16, and each jack 107 is in a retracted state;
s3, simultaneously lifting all the sliding jacks 106 on the two sides to the same height, and lifting the prefabricated middle plate 16 to separate from the underground wall 1 and the prefabricated middle longitudinal beam 15;
s4, sliding the sliding jacks 106 on the two sides longitudinally at the same time, and transporting the prefabricated middle plate 16 to a preset installation position;
s5, lowering all the sliding jacks 106 on the two sides simultaneously, lowering the prefabricated middle plate 16 down, supporting the prefabricated middle plate on the steel structure clamping grooves 2 pre-embedded in the underground wall 1 and the reserved protruding tongue-and-groove of the prefabricated middle longitudinal beam 15, and completing the transportation and installation of the single prefabricated middle plate 16;
and S6, circulating S1-S5, and finishing the assembly of all other prefabricated middle plates 16.
Preferably, the method further comprises the steps of:
s7, after all the prefabricated middle plates 16 are assembled, on one hand, the sliding jack 106 is moved out from the terminal end, on the other hand, a plurality of clamping blocks are sequentially inserted into a gap between the upper clamping groove 104 and the lower clamping groove 105, the prefabricated middle plates 16 are clamped between the underground wall 1 and the prefabricated middle longitudinal beam 15, and then grouting is performed in gaps between the upper clamping groove 104 and the lower clamping groove 105, so that the prefabricated middle plates 16 are prevented from being displaced.
The utility model also provides a transportation and installation method of the mechanized transportation of full compound assembled contrary construction subway station prefabricated medium plate and installation device as before, wherein, including following step:
s1, hoisting the prefabricated middle plate 16 through a working well, placing the prefabricated middle plate on a steel structure clamping groove 2 pre-embedded in the underground wall 1 and a reserved protruding tongue-and-groove of the prefabricated middle longitudinal beam 15, and aligning the upper clamping groove 104 with the lower clamping groove 105; two sliding jacks 106 are respectively arranged in the lower clamping grooves 105 at the two sides to form a sliding jack group;
s2, starting a handwheel 114 at an initiating end or an electric winch 113 at a finishing end, and dragging and adjusting the longitudinal position of the sliding jack group, so that the sliding jack group is positioned right below the upper clamping groove 104 of the prefabricated middle plate 16, and each jack 107 is in a contraction state;
s3, simultaneously lifting the four sliding jacks 106 at the two sides to the same height, and lifting the prefabricated middle plate 16 to separate from the underground wall 1 and the prefabricated middle longitudinal beam 15;
s4, starting the electric winch 113 at the terminal end, pulling the sliding jack groups at the two sides, and dragging the prefabricated middle plate 16 to a preset installation position;
s5, lowering four sliding jacks 106 on two sides simultaneously, lowering the prefabricated middle plate 16 down, supporting the prefabricated middle plate on a steel structure clamping groove 2 pre-embedded in the underground wall 1 and a reserved protruding tongue-and-groove of the prefabricated middle longitudinal beam 15, and completing the transportation and installation of the single prefabricated middle plate 16;
and S6, circulating S1-S5, and finishing the assembly of all other prefabricated middle plates 16.
Preferably, the method further comprises the steps of:
s7, after all the prefabricated middle plates 16 are assembled, on one hand, the electric winch 113 and the steel strand 111 at the terminal end are used for pulling out the sliding jack group, on the other hand, the steel strand 111 at the starting end is used for connecting a plurality of clamping blocks in series, the electric winch 113 at the terminal end is sequentially pulled into a gap between the upper clamping groove 104 and the lower clamping groove 105, the prefabricated middle plates 16 are clamped between the underground wall 1 and the prefabricated middle longitudinal beam 15, and then grouting is performed in the gap between the upper clamping groove 104 and the lower clamping groove 105, so that the prefabricated middle plates 16 are prevented from being displaced.
The utility model discloses an other technical index as follows.
Go up draw-in groove 104 recommended size be 120mm (wide) x50mm (dark), draw-in groove 105 recommended size is 120mm (wide) x100mm (dark) down, go up draw-in groove 104 and draw-in groove 105 and the direct basal plane of sliding jack down need use the thick steel plate liner, prevent that the concrete from crushing because local atress is too big.
The precision of last draw-in groove 104 that prefabricated medium plate 16 reserved and lower draw-in groove 105 that underground wall 1 reserved need satisfy the requirement, the error must not be greater than 10 mm.
Sliding jack 106, the outer dimension recommends to be 100mm (length) x100mm (width) x135/200mm (height, contraction state/ejecting state), 4 gyro wheels 109 are established to single sliding jack 106, gyro wheel 109 and roller bearing 10 need have sufficient bearing capacity. The jack 107 is required to have the function of remote control jacking and landing and is connected with the steel plate 108 in a welding way.
The closing height between the upper clamping groove 104 and the lower clamping groove 105 is 150mm, the sliding jack 106 is placed in the lower clamping groove 105, and the prefabricated middle plate 16 can be jacked up to 50mm when the jacking state is 200 mm; the height of the contracted state is 135mm, the height is less than 150mm, and the hand wheel 114 can be smoothly pulled out.
Every recommended width of prefabricated medium plate 16 be 2m, weight is about 12 t. The weight of the sliding jack 106 is about 3t, the weight of the roller 109 is about 0.75t, and the weight is controllable and practical.
The reinforcing steel bar 112 of the present invention is used for positioning the two sliding jacks 106, the diameter is not less than 20mm, and the length is recommended to be 1 m; the steel strand 111 needs to have sufficient tensile strength and flexibility.
Electric hoist 113 arranges in terminal, and power needs to satisfy the requirement, hand wheel 114 be located originating end.
After all the prefabricated middle plates 16 are assembled, concrete blocks or steel blocks can be pulled in gaps between the upper clamping grooves 104 and the lower clamping grooves 105 by using the electric windlass 113 and the steel strands 111, the prefabricated middle plates 16 are clamped on the underground wall 1 and the prefabricated middle longitudinal beams 15, and grouting can be performed in the gaps subsequently to prevent the prefabricated middle plates 16 from being displaced.
As shown in fig. 4, the utility model also provides a full compound assembled underground structure (for example subway station), adopted foretell full compound assembled subway station prefabricated component mechanized transportation system and method, wherein:
comprises an underground wall 1 and a main structure upright post; the top of the underground wall is provided with a crown beam 5 and a steel structure clamping groove 2 for pre-embedding and installing the prefabricated middle plate in the middle part, the steel structure clamping groove is used for positioning and supporting the prefabricated middle plate when the prefabricated middle plate is hoisted, the height of the clamping groove is greater than the thickness of the middle plate, and the middle plate can still be ensured to be positioned at the designed elevation by allowing relative movement of the clamping groove and the middle plate when the elevation of the underground wall; the top of the main structure upright post is provided with a prefabricated top longitudinal beam 8, and the middle part of the main structure upright post is provided with a prefabricated middle longitudinal beam 15. The main structure upright column comprises a pile foundation 3 and a steel upright column 4, wherein the steel upright column 4 needs to be inserted into the pile foundation 3 to a certain depth, so that the reliable combination of the pile foundation 3 and the steel upright column is ensured; the steel upright column 4 is formed into a steel pipe concrete composite column by adopting a steel pipe concrete column, section steel concrete or outer concrete. A top plate prestress jack 11 is arranged between the crown beam 5 and the prefabricated top plate 9, and a middle plate prestress jack 19 is arranged between the steel structure clamping groove 2 and the prefabricated middle plate 16. Considering that certain errors need to be reserved for installation and positioning of the prefabricated parts, transverse prestress is respectively applied to the prefabricated parts of the top plate and the middle plate through the top plate prestress jack 11 and the middle plate prestress jack 19 to balance and offset the reserved errors, deformation of the underground wall is controlled, and safety and stability of the foundation pit and the surrounding construction are guaranteed. Each prefabricated plate is tensioned and locked into a whole in the longitudinal direction (in-paper direction) by adopting prestressed reinforcements or locking steel rods section by section.
The composite waterproof prestressed roof is formed by the prefabricated roof longitudinal beams 8, the prefabricated roof plates 9 arranged between the crown beams 5 and the prefabricated roof longitudinal beams 8, the prefabricated roof plates 9 arranged between two adjacent prefabricated roof longitudinal beams 8, the roof plate cast-in-situ layer 12 on the roof plates and the roof plate flexible waterproof layer 13 on the roof plate cast-in-situ layer.
The composite prestress middle plate is formed by the prefabricated middle longitudinal beams 15, the prefabricated middle plates 16 arranged between the steel structure clamping grooves 2 and the prefabricated middle longitudinal beams 15, the prefabricated middle plates 16 arranged between every two adjacent prefabricated middle longitudinal beams 15 and the middle plate cast-in-place layers 20 on the middle plates.
The prefabricated cushion layer 23, the bottom plate waterproof layer 24 and the cast-in-place bottom plate 25 which are sequentially arranged on the substrate from bottom to top form a composite waterproof bottom plate together.
The underground wall 1 and the side wall waterproof layer and the side wall cast-in-place layer which are sequentially arranged on the underground wall towards the inner side direction form a composite waterproof wall together.
The prefabricated top plate 9 is hung with a prefabricated pipeline bracket 10 through an embedded groove to form an integral prefabricated member. The prefabricated middle plate 16 is suspended with a prefabricated pipeline bracket 10 and a prefabricated rail top air duct 28 through an embedded groove, and is provided with a prefabricated pipeline sleeve 18 in a vertical through mode to form an integral prefabricated part. Grooves are reserved on the inner side of the crown beam 5, protruding tongues and grooves are reserved on two sides of the prefabricated top longitudinal beam 8, protruding tongues and grooves are reserved on two sides of the prefabricated middle longitudinal beam 15, and therefore the prefabricated top plate 9 and the prefabricated middle plate 16 can be conveniently hoisted and placed.
The composite waterproof prestressed top plate, the composite prestressed middle plate, the composite waterproof bottom plate and the composite waterproof wall are effectively connected to form a fully-wrapped waterproof fully-composite assembled underground structure, so that the problem of water leakage of the fully-assembled underground structure is solved, the limitation of the application range of the assembled underground structure is broken through, the composite waterproof prestressed underground structure can be applied to water-rich strata, areas with complex surrounding environment and high deformation control, and the composite waterproof prestressed top plate, the composite prestressed middle plate, the composite waterproof bottom plate and the composite waterproof wall can be powerfully pushed to be widely applied to underground engineering. The utility model replaces a large number of inner supports and templates of the conventional open cut cast-in-place structure, thereby saving investment; meanwhile, the prefabricated part can be pre-stressed, deformation of the assembled gap is balanced and offset, the surrounding environment can be effectively protected, and the safety of the foundation pit is ensured. The prefabricated part is manufactured in a factory and constructed mechanically, high quality and superior quality of underground structural engineering are achieved, traditional ceiling decoration is replaced, comprehensive pipeline standardization and mechanical installation are achieved through the pre-buried channel, investment and construction period are saved, green construction is achieved, energy is saved, environment is protected, the technology is advanced, sustainable development and green construction are achieved, practicability is high, and the underground structural engineering system has wide application space in the field of underground engineering.
The utility model discloses a reverse construction method of compound assembled underground structure, including following step:
s1, constructing an underground wall 1 and a main structure upright post, wherein a steel structure clamping groove 2 for mounting a prefabricated middle plate is pre-buried on the underground wall 1; in the step S1, the underground wall 1 adopts an underwater concrete casting underground diaphragm wall or a prefabricated underground wall; the construction method of the main structure column comprises the steps of constructing the pile foundation 3, hoisting the steel column 4 to be inserted into the pile foundation 3, and forming the steel pipe concrete composite column by the steel column 4 through a steel pipe concrete column, section steel concrete or outer concrete.
And S2, constructing the crown beam 5 and the retaining wall 6.
And S3, excavating to the lower excavation aspect 7 of the top plate beam, and hoisting the prefabricated top longitudinal beam 8 and the prefabricated top plate 9, wherein the prefabricated pipe support 10 is pre-embedded in the factory manufacturing process of the prefabricated top plate. Preferably, a groove is reserved during construction of the crown beam 5, and a protruding tongue-and-groove is reserved for the prefabricated top longitudinal beam 8 to be used for hoisting and placing the prefabricated top plate 9.
And S4, firstly applying prestress to the prefabricated roof 9 through a roof prestress jack 11 between the crown beam 5 and the prefabricated roof 9, then pouring a roof cast-in-situ layer 12, and constructing a roof flexible waterproof layer 13, wherein a plurality of soil discharging and feeding holes are longitudinally formed along the roof according to the soil discharging and feeding requirements.
And S5, synchronously excavating earth downwards to the lower excavation aspect 14 of the middle plate girder at the lower layer under the support of the precast beam slab system. Preferably, between S4-S5, after the roof precast beam slab system, the cast-in-place layer and the waterproof layer are completed, the pipeline can be moved back, backfilled and covered with soil, the traffic is recovered, and the influence on urban traffic and pipelines can be reduced.
And S6, hoisting the prefabricated middle longitudinal beam 15 and the prefabricated middle plate 16 by utilizing the upper layer unearthed and fed hole, wherein the prefabricated middle plate is provided with a suspension installation groove in which a prefabricated pipeline bracket 17, a pre-buried pipeline sleeve 18 and a prefabricated rail top air duct 28 are pre-buried in the factory manufacturing process. The underground wall 1 is pre-buried steel structure draw-in groove 2 in the medium plate elevation position, and prefabricated medium longitudinal beam 15 reserves protruding tongue-and-groove for the hoist and mount of prefabricated medium plate 16 are laid. During hoisting, the prefabricated middle longitudinal beam is inserted into a reserved steel structure clamping groove 2 of the underground continuous wall 1 and placed on a reserved middle longitudinal beam rabbet of the prefabricated middle longitudinal beam 15. The horizontal transportation of the prefabricated middle plate adopts the mechanical transportation and installation device and method for the prefabricated middle plate of the fully-composite assembly type top-down construction subway station.
And S7, firstly, applying prestress to the prefabricated middle plate 16 by using the middle plate prestress jack 19 in the steel structure clamping groove 2, and then pouring a middle plate cast-in-place layer 20, wherein the unearthing and feeding holes of the middle plate correspond to the upper layer.
S8, synchronously excavating downwards under the support of the precast beam plate; and simultaneously constructing an underground layer of side wall waterproof layer 21 and an underground layer of side wall cast-in-place layer 22.
And S9, circulating downwards S5-S7, and excavating to the bottom of the foundation pit.
S10, mounting the prefabricated cushion layer 23, constructing the waterproof layer 24 of the bottom plate and casting the bottom plate 25 in situ.
S11, constructing a bottom plate layer side wall waterproof layer 26 and a bottom plate layer side wall cast-in-place layer 27; and synchronously and sequentially filling the soil discharging holes and the feeding holes.
Preferably, after S11, the method further comprises:
and S12, after the composite assembly type underground structure main body is finished and shield construction in the influence range of adjacent regions is finished, installing the prefabricated rail top air duct 28 through the suspension installation groove pre-embedded in the prefabricated middle plate.
The utility model discloses a waterproof full compound assembled underground structure of full package and construction method need not to erect support and template in the whole work progress, but synchronous construction operation under the board upper plate, and the time of waiting for the age to form shortens greatly, has a series of advantages such as green construction, quick convenient, safe high efficiency, environmental protection and energy saving, sparingly invest in, has wide application space.
The top plate, the middle plate prefabricated part and the cast-in-place layer replace an inner support and a template, the earth is excavated, fed, the prefabricated middle plate is hoisted and the assembling machine enters and exits by utilizing the arranged earth-excavating feed hole in the construction process from top to bottom, and the main structure is finished after the bottom plate is closed and the side wall is finished.
The structure cast-in-place layer comprises a top plate cast-in-place layer, a middle plate cast-in-place layer and a cast-in-place bottom plate, and the prefabricated components are used as templates during pouring, so that a large number of templates can be saved.
The construction method of the fully-composite assembly type underground structure is used for constructing from top to bottom, and the top plate prefabricated part, the cast-in-place layer, the middle plate prefabricated part and the cast-in-place layer are used for replacing an inner support system, so that the construction objects around the foundation pit can be effectively protected, and a large amount of engineering investment is saved.
The construction method of the fully-composite assembly type underground structure is used for constructing from top to bottom, and the top plate prefabricated part, the cast-in-place layer, the middle plate prefabricated part and the cast-in-place layer are used for replacing an inner support system, so that the construction objects around the foundation pit can be effectively protected, and a large amount of engineering investment is saved. Considering that certain errors need to be reserved for installation and positioning of the prefabricated parts, transverse prestress is respectively applied to the prefabricated parts of the top plate and the middle plate through the top plate prestress jack and the middle plate prestress jack to balance and offset the reserved errors, deformation of the underground wall is controlled, and safety and stability of the foundation pit and the surrounding structures are ensured. Each prefabricated plate is tensioned and locked into a whole in the longitudinal direction (in-paper direction) by adopting prestressed reinforcements or locking steel rods section by section.
Splicing and assembling all prefabricated components of the structure, wherein the assembled components are formed by connecting mortises and high-strength bolts; the prefabricated cushion layer can also adopt a cast-in-place concrete structure.
The utility model discloses a compound assembled underground structure and construction method thereof is applicable to underground one deck, two-layer and more layers, can be applicable to no post list and stride, single post is two strides, two post three strides or more stride multilayer underground structure as required by the engineering.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. The utility model provides a mechanized transportation of prefabricated medium plate of full compound assembled top-down construction subway station and installation device which characterized in that:
the underground wall (1) is pre-embedded with a steel structure clamping groove (2) at the elevation position of the middle plate, and a prefabricated middle longitudinal beam (15) is provided with a protruding tongue-and-groove for hoisting and placing a prefabricated middle plate (16);
lower clamping grooves (105) which are concave and extend along the longitudinal direction of the subway station are preset in the reserved convex grooves and tongues of the steel structure clamping groove (2) and the prefabricated middle longitudinal beam (15), and upper clamping grooves (104) which are concave and extend along the longitudinal direction of the subway station are preset in corresponding positions of two ends below the prefabricated middle plate (16);
a sliding lifting device is arranged in a gap formed by the lower clamping groove (105) and the upper clamping groove (104) and can support and lift the prefabricated middle plate (16) and drive the prefabricated middle plate (16) to move longitudinally along the subway station.
2. The mechanized transportation and installation device for the prefabricated middle plate of the fully-composite assembled reverse construction subway station as claimed in claim 1, wherein:
the sliding lifting device comprises a sliding jack (106), and the sliding jack (106) comprises a jack (107), a steel plate (108) and a roller (109);
the bottom of the jack (107) is fixed on the steel plate (108) and is used for supporting the lifting prefabricated middle plate (16); a plurality of rollers (109) are arranged below the steel plate (108) and are used for rolling in the lower clamping groove (105).
3. The mechanized transportation and installation device for the prefabricated middle plate of the fully-composite assembled reverse construction subway station as claimed in claim 2, wherein:
the sliding lifting device comprises a traction device, and the traction device comprises a steel strand (111), a steel bar (112) and a winding mechanism;
a plurality of sliding jacks (106) in the lower clamping groove (105) form a group of sliding jack groups to jointly transport a prefabricated middle plate (16), the sliding jacks are fixedly connected with each other through reinforcing steel bars (112), and the sliding jacks (106) at two ends of each group are respectively connected with the hoisting mechanisms at the starting end and the ending end through steel stranded wires (111) and used for towing the sliding jack groups.
4. The mechanized transportation and installation device for the prefabricated middle plate of the fully-composite assembled reverse construction subway station as claimed in claim 3, wherein:
the hoisting mechanism at the terminal end is an electric hoisting machine (113).
5. The mechanized transportation and installation device for the prefabricated middle plate of the fully-composite assembled reverse construction subway station as claimed in claim 3, wherein:
the hoisting mechanism at the initiating end is an electric hoisting machine or a hand wheel (114), or the electric hoisting machine and the hand wheel (114) are connected in parallel for alternative use.
6. The mechanized transportation and installation device for the prefabricated middle plate of the fully-composite assembled reverse construction subway station as claimed in claim 2, wherein:
the jack (107) has the function of remote control jacking and landing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920607818.8U CN210288479U (en) | 2019-04-29 | 2019-04-29 | Prefabricated medium plate transportation and installation device of full-composite assembly type reverse subway station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920607818.8U CN210288479U (en) | 2019-04-29 | 2019-04-29 | Prefabricated medium plate transportation and installation device of full-composite assembly type reverse subway station |
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| Publication Number | Publication Date |
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| CN210288479U true CN210288479U (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920607818.8U Withdrawn - After Issue CN210288479U (en) | 2019-04-29 | 2019-04-29 | Prefabricated medium plate transportation and installation device of full-composite assembly type reverse subway station |
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| CN (1) | CN210288479U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110042866A (en) * | 2019-04-29 | 2019-07-23 | 中铁第四勘察设计院集团有限公司 | The complete combined assembled inverse prefabricated middle plate in subway station of making transports mounting device and method |
-
2019
- 2019-04-29 CN CN201920607818.8U patent/CN210288479U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110042866A (en) * | 2019-04-29 | 2019-07-23 | 中铁第四勘察设计院集团有限公司 | The complete combined assembled inverse prefabricated middle plate in subway station of making transports mounting device and method |
| CN110042866B (en) * | 2019-04-29 | 2023-11-28 | 中铁第四勘察设计院集团有限公司 | Full-composite assembly type reverse-acting subway station prefabricated middle plate transportation and installation device and method |
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