CN110318426B - Assembled steel-concrete mixed structure subway station and assembling method - Google Patents
Assembled steel-concrete mixed structure subway station and assembling method Download PDFInfo
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- CN110318426B CN110318426B CN201910725436.XA CN201910725436A CN110318426B CN 110318426 B CN110318426 B CN 110318426B CN 201910725436 A CN201910725436 A CN 201910725436A CN 110318426 B CN110318426 B CN 110318426B
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- 239000004567 concrete Substances 0.000 title claims abstract description 231
- 238000000034 method Methods 0.000 title claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 367
- 239000010959 steel Substances 0.000 claims abstract description 367
- 239000002131 composite material Substances 0.000 claims abstract description 178
- 239000002002 slurry Substances 0.000 claims abstract description 24
- 239000011150 reinforced concrete Substances 0.000 claims description 87
- 238000011065 in-situ storage Methods 0.000 claims description 35
- 230000003014 reinforcing effect Effects 0.000 claims description 33
- 238000003466 welding Methods 0.000 claims description 22
- 229920006327 polystyrene foam Polymers 0.000 claims description 18
- 238000009415 formwork Methods 0.000 claims description 9
- 238000007493 shaping process Methods 0.000 claims description 6
- 230000035515 penetration Effects 0.000 claims description 5
- 210000003205 muscle Anatomy 0.000 claims 3
- 239000004540 pour-on Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 19
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000004035 construction material Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
- E02D29/04—Making large underground spaces, e.g. for underground plants, e.g. stations of underground railways; Construction or layout thereof
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Abstract
An assembled steel-concrete mixed structure subway station and an assembling method belong to the technical field of assembled subway station construction. The invention aims to solve the problems of low industrialization degree, poor field operation environment, environmental pollution, noise pollution and the like caused by construction of the existing assembly type subway station. The invention comprises a bottom plate, a lower two-layer side wall and a lower side wall which are connected by adopting a grouting sleeve or a slurry anchor; the steel pipe concrete column and the steel beam of the steel pipe concrete composite beam adopt external annular joints, the precast slab of the concrete hollow superimposed sheet is supported on the concrete wall and the steel beam, the two ends of the precast slab are reserved to extend out of the reinforcing steel bars, and the precast arch top plate of the arch structure adopts joggles at the arch top position. The novel assembled steel-concrete mixed structure subway station provided by the invention has the advantages that the components are prefabricated in factories and assembled and connected at present, so that the construction speed can be greatly increased, the field wet operation is reduced, and the influence on the surrounding traffic and the environment is reduced.
Description
Technical Field
The invention relates to an assembled steel-concrete mixed structure subway station and an assembling method, and belongs to the technical field of construction of assembled subway stations.
Background
The subway station is constructed by adopting an open cut method, a large amount of labor resources and raw materials are required to be consumed, the construction site and material transportation have great influence on road traffic, the industrialization degree is low, the field operation environment is poor, and the problems of environmental pollution, noise pollution and the like caused by construction are increasingly serious. The assembled subway station can realize standardization of design, prefabricated components and construction, greatly shortens the construction period of the subway station, reduces the occupied area of stacking, processing and the like of construction materials, reduces a large amount of site operations such as concrete pouring and the like, thereby saving labor force, reducing construction waste, and having the advantages of environmental protection, energy conservation and the like. Meanwhile, by combining the advantages of superior stress performance of steel-concrete structural members including steel pipe concrete columns, steel-concrete composite beams and the like, the novel assembled steel-concrete mixed structure subway station is provided, and consists of steel pipe concrete columns, steel-concrete composite beams, concrete hollow slab superimposed sheets, precast concrete walls and the like. The novel structure has the advantages of high construction speed, green energy conservation, excellent mechanical property and the like, most of components can be prefabricated in factories, only a small amount of concrete is needed to be assembled and poured at present, and the earthquake resistance of the whole structure can be greatly improved by applying the combined components of the steel pipe concrete column and the steel-concrete combination Liang Zhelei.
Disclosure of Invention
The invention provides an assembled steel-concrete mixed structure subway station and an assembling method thereof, aiming at solving the problems of low industrialization degree, poor field operation environment, increasingly serious environmental pollution, noise pollution and the like caused by construction of the existing assembled subway station.
The technical scheme of the invention is as follows:
the utility model provides an assembled steel-concrete mixed structure subway station, including bottom plate 1, lower two-layer side wall 2, next layer side wall 3, steel pipe concrete composite beam, coincide floor 5 and roof 6, the both sides of bottom plate 1 are connected with lower two-layer side wall 2 respectively, be equipped with next layer side wall 3 on the next two-layer side wall 2, coincide floor 5 level sets up between next two-layer side wall 2 and next layer side wall 3, and be equipped with steel pipe concrete composite beam between coincide floor 5 and the bottom plate 1, roof 6 sets up on next layer side wall 3 and is located coincide floor 5's top.
Preferably: the bottom plate 1 is a line-crossed reinforced concrete bottom plate with a U-shaped structure, embedded steel bar heads 1-2 are reserved on two sides of the U-shaped structure, and embedded bolts 1-1 are uniformly distributed in the middle of the U-shaped structure of the bottom plate 1;
the lower two-layer side wall 2 is a preset reinforced concrete shear wall, embedded steel bar heads 1-2 are reserved at the upper end and the lower end of the lower two-layer side wall 2, and U-shaped steel bars 2-1 are reserved at the two side wall edges of the lower two-layer side wall 2; the embedded steel bar heads 1-2 left on the lower two-layer side wall 2 are connected with the embedded steel bar heads 1-2 left on the bottom plate 1 through grouting sleeves 7 or slurry anchors, and gaps are left between two adjacent lower two-layer side walls 2 positioned on the same side of the bottom plate 1.
Preferably: the steel tube concrete composite beam comprises a steel tube concrete column 4 and a steel tube concrete beam 9, wherein the steel tube concrete column 4 is a steel tube with concrete poured inside, an outer reinforcing ring node 10 is sleeved at the upper end of the steel tube concrete column 4, a short beam is reserved on the outer reinforcing ring node 10, the steel tube concrete beam 9 is arranged between two adjacent steel tube concrete columns 4, the steel tube concrete beam 9 is connected with the short beam reserved on the outer reinforcing ring node 10 through bolt welding, and an embedded steel bar head 1-2 and a reserved steel plate 9-1 are reserved at the upper end of the steel tube concrete beam 9.
Preferably: the lower end of the steel tube concrete column 4 is connected with the embedded bolts 1-1 arranged on the bottom plate 1 through the fixed mounting end bearing plate 8 to realize the mounting of the steel tube concrete composite beam and the bottom plate 1.
Preferably: the composite floor slab 5 is formed by superposing a composite floor slab precast slab and a cast-in-situ reinforced concrete layer, wherein the composite floor slab precast slab comprises a reinforced concrete bottom plate 5-1, a reinforced truss 5-2 and a polystyrene foam plate 5-3, embedded reinforced bar heads 1-2 are reserved on two side edges of the reinforced concrete bottom plate 5-1, the reinforced truss 5-2 is uniformly arranged on the reinforced concrete bottom plate 5-1, and the polystyrene foam plate 5-3 is arranged between the adjacent reinforced truss 5-2; and the precast slab of the composite floor slab is placed between the lower two-layer side wall 2 and the steel concrete beam 9, and the embedded bar heads 1-2 on the precast slab of the composite floor slab are welded with the reserved steel plate 9-1 on the steel concrete beam 9.
Preferably: the structure of the lower layer side wall 3 is the same as that of the lower two layers of side walls 2, and the lower layer side wall 3 and the lower two layers of side walls 2 are connected by adopting a grouting sleeve 7 or a slurry anchor; and the vertical steel bars 13 are inserted between the U-shaped steel bars 2-1 reserved between the two adjacent lower two-layer side walls 2 and the U-shaped steel bars 2-1 reserved between the two adjacent lower two-layer side walls 3, the vertical steel bars 12 are inserted between the U-shaped steel bars 2-1 and the vertical steel bars 12, the cast-in-situ reinforced concrete fills gaps between the two adjacent lower two-layer side walls 2 and the two adjacent lower two-layer side walls 3, and the cast-in-situ reinforced concrete layer is cast on the precast slab of the laminated floor slab and is positioned in the junction area between the lower two-layer side walls 3 and the lower two-layer side walls 2.
Preferably: the roof 6 comprises long arch top members 6-1 and short arch top members 6-2, one long arch top member 6-1 and one short arch top member 6-2 are joggled and joggled to form one arch top member, the arch top members are connected with the next layer of side wall 3 through grouting sleeves 7 or slurry anchors, and each arch top member is spliced by staggered joints to form the roof 6.
Preferably: the roof 6 comprises roof components 6-3, the structure of the roof components 6-3 is the same as that of the composite floor 5, the roof components 6-3 are placed on the next layer of side wall 3, and a steel pipe concrete composite beam is arranged between the roof components 6-3 and the composite floor 5.
Preferably: the steel pipe of the steel pipe concrete composite beam between the top plate component 6-3 and the composite floor slab 5 passes through the composite floor slab 5, and is vertically butted with the steel pipe of the steel pipe concrete composite beam between the composite floor slab 5 and the bottom plate 1 through the lining steel pipe section 14, and the steel pipes are welded by adopting full penetration vortex port welding seams.
Preferably: the connecting structure of the top plate component 6-3 and the steel tube concrete composite beam is the same as the connecting structure of the composite floor slab 5 and the steel tube concrete composite beam, and the connecting structure of the top plate component 6-3 and the next-layer side wall 3 is the same as the connecting structure of the composite floor slab 5 and the next-layer side wall 2.
The method for assembling the subway station with the assembled steel-concrete mixed structure comprises the following steps:
step one, preparing a prefabricated part:
the prefabricated member comprises a lower two-layer side wall 2, a lower side wall 3, a composite floor precast slab, a long arch top member 6-1, a short arch top member 6-2 and a steel concrete beam 9;
the lower two-layer side wall 2 is a preset reinforced concrete shear wall, embedded steel bar heads 1-2 are reserved at the upper end and the lower end of the lower two-layer side wall 2, and U-shaped steel bars 2-1 are reserved at the two side wall edges of the lower two-layer side wall 2;
the structure of the next-layer side wall 3 is the same as that of the next-layer side wall 2;
The precast slab of the composite floor slab comprises a reinforced concrete bottom plate 5-1, steel bar trusses 5-2 and polystyrene foam plates 5-3, wherein embedded steel bar heads 1-2 are reserved on two side edges of the reinforced concrete bottom plate 5-1, the steel bar trusses 5-2 are uniformly arranged on the reinforced concrete bottom plate 5-1, and the polystyrene foam plates 5-3 are arranged between the adjacent steel bar trusses 5-2;
one end of the long arch top member 6-1 is of a joggle joint structure, and an embedded bar head 1-2 is reserved at the other end of the long arch top member 6-1; one end of the short vault member 6-2 is a structure matched with the joggle structure of the long vault member 6-1, and the other end of the short vault member 6-2 is provided with an embedded bar head 1-2;
the outside of the steel concrete beam 9 is provided with a steel plate, concrete is poured on the inside of the steel plate, and an embedded bar head 1-2 and a reserved steel plate 9-1 are reserved on the upper side of the steel concrete beam 9;
step two, assembling a bottom plate:
assembling a bottom plate 1 in a dug foundation pit, wherein the bottom plate 1 adopts a cast-in-situ reinforced concrete structure, the bottom plate 1 is a line-crossed reinforced concrete bottom plate with a U-shaped structure, embedded steel bar heads 1-2 are reserved on two sides of the U-shaped structure, and embedded bolts 1-1 are uniformly distributed in the middle of the U-shaped structure of the bottom plate 1;
step three, splicing the lower two layers of side walls:
The lower two-layer side wall 2 is a preset reinforced concrete shear wall, two sides of the bottom plate 1 are respectively connected with the lower two-layer side wall 2 through grouting sleeves 7 or slurry anchors, and a gap is reserved between two adjacent lower two-layer side walls 2 positioned on the same side of the bottom plate 1;
fourth, assembling the lower two-layer steel tube concrete composite beam:
the steel tube concrete composite beam comprises a steel tube concrete column 4 and a steel concrete beam 9, wherein the steel tube concrete column 4 is a steel tube with concrete poured inside;
the lower end of the steel pipe is connected with an embedded bolt 1-1 arranged on a bottom plate 1 through a fixed mounting end bearing plate 8, concrete is poured into the steel pipe from the upper end of the steel pipe, then an outer reinforcing ring node 10 is sleeved at the upper end of the steel pipe, a short beam is reserved on the outer reinforcing ring node 10, and a steel concrete beam 9 is connected with the short beam reserved on the outer reinforcing ring node 10 through bolt welding, so that a lower two-layer steel pipe concrete composite beam is formed;
step five, assembling a lower two-layer floor slab and a lower side wall:
the lower two-layer floor slab is a composite floor slab 5, and the composite floor slab 5 is formed by superposing a composite floor slab precast slab and a cast-in-situ reinforced concrete layer;
firstly, placing a precast slab of the composite floor slab between a lower two-layer side wall 2 and a steel concrete beam 9, and welding an embedded bar head 1-2 on the precast slab of the composite floor slab with a reserved steel plate 9-1 on the steel concrete beam 9;
Then the next-layer side wall 3 and the next-layer side wall 2 are connected by adopting a grouting sleeve 7 or a slurry anchor;
then, formwork is supported in the junction area of the lower two-layer side wall 2 and the lower side wall 3, a composite floor slab precast slab is poured, and cast-in-situ reinforced concrete layers are obtained in the junction area of the lower two-layer side wall 2, the lower one-layer side wall 3 and the composite floor slab precast slab, the cast-in-situ reinforced concrete layers and the composite floor slab precast slab are overlapped to obtain a composite floor slab 5, and the composite floor slab 5 is the lower two-layer floor slab;
finally, a sealing horizontal steel bar 12 is placed between the reserved U-shaped steel bars 2-1 of the two adjacent lower two-layer side walls 2 and between the reserved U-shaped steel bars 2-1 of the two adjacent lower two-layer side walls 3, a vertical steel bar 13 is inserted between the U-shaped steel bars 2-1 and the sealing horizontal steel bar 12, a shaping template is adopted for supporting a mould, and concrete is poured to fill gaps between the two adjacent lower two-layer side walls 2 and the two adjacent lower side walls 3;
step six, assembling a top plate:
a long arch top member 6-1 and a short arch top member 6-2 are matched and joggled to form an arch top member, the arch top member is connected with the next layer of side wall 3 through a grouting sleeve 7 or a slurry anchor, and each arch top member is spliced in a staggered manner to form a top plate 6; the two sides of the top plate 6 are respectively connected with the next layer of side wall 3 through the embedded bar heads 1-2 of the long arch top member 6-1 and the short arch top member 6-2 by the grouting sleeve 7 or the slurry anchor.
Another method for assembling an assembled steel-concrete mixed structure subway station comprises the following steps:
step one, preparing a prefabricated part:
the prefabricated member comprises a lower two-layer side wall 2, a lower side wall 3, a composite floor precast slab, a steel concrete beam 9 and a roof component 6-3;
the lower two-layer side wall 2 is a preset reinforced concrete shear wall, embedded steel bar heads 1-2 are reserved at the upper end and the lower end of the lower two-layer side wall 2, and U-shaped steel bars 2-1 are reserved at the two side wall edges of the lower two-layer side wall 2;
the structure of the next-layer side wall 3 is the same as that of the next-layer side wall 2;
the precast slab of the composite floor slab comprises a reinforced concrete bottom plate 5-1, steel bar trusses 5-2 and polystyrene foam plates 5-3, wherein embedded steel bar heads 1-2 are reserved on two side edges of the reinforced concrete bottom plate 5-1, the steel bar trusses 5-2 are uniformly arranged on the reinforced concrete bottom plate 5-1, and the polystyrene foam plates 5-3 are arranged between the adjacent steel bar trusses 5-2;
the outside of the steel concrete beam 9 is provided with a steel plate, concrete is poured on the inside of the steel plate, and an embedded bar head 1-2 and a reserved steel plate 9-1 are reserved on the upper side of the steel concrete beam 9;
the roof component 6-3 has the same structure as the composite floor 5, and is formed by laminating composite floor precast slabs and cast-in-situ reinforced concrete layers;
Step two, assembling a bottom plate:
assembling a bottom plate 1 in a dug foundation pit, wherein the bottom plate 1 adopts a cast-in-situ reinforced concrete structure, the bottom plate 1 is a line-crossed reinforced concrete bottom plate with a U-shaped structure, embedded steel bar heads 1-2 are reserved on two sides of the U-shaped structure, and embedded bolts 1-1 are uniformly distributed in the middle of the U-shaped structure of the bottom plate 1;
step three, splicing the lower two layers of side walls:
the lower two-layer side wall 2 is a preset reinforced concrete shear wall, two sides of the bottom plate 1 are respectively connected with the lower two-layer side wall 2 through grouting sleeves 7 or slurry anchors, and a gap is reserved between two adjacent lower two-layer side walls 2 positioned on the same side of the bottom plate 1;
fourth, assembling the lower two-layer steel tube concrete composite beam:
the steel tube concrete composite beam comprises a steel tube concrete column 4 and a steel concrete beam 9, wherein the steel tube concrete column 4 is a steel tube with concrete poured inside;
the lower end of the steel pipe is connected with an embedded bolt 1-1 arranged on a bottom plate 1 through a fixed mounting end bearing plate 8 in the lower two layers, concrete is poured into the steel pipe from the upper end of the steel pipe, then an outer reinforcing ring node 10 is sleeved at the upper end of the steel pipe, a short beam is reserved on the outer reinforcing ring node 10, and a steel concrete beam 9 is connected with the short beam reserved on the outer reinforcing ring node 10 through bolt welding, so that a lower two-layer steel pipe concrete composite beam is formed;
Step five, assembling a next layer of steel tube concrete composite beam, a next two layers of floorslab and a next layer of side wall:
firstly, vertically butting the lower end of a steel pipe on the next layer with the upper end of the steel pipe of a concrete composite beam of the lower two layers of steel pipes through a lining steel pipe section 14, and welding the steel pipe of the next layer with the steel pipe of the lower two layers by adopting a full penetration vortex port weld;
secondly, placing the precast slab of the composite floor slab between the lower two-layer side wall 2 and the steel concrete beam 9 of the lower two-layer steel tube concrete composite beam, and welding the embedded bar heads 1-2 on the precast slab of the composite floor slab with the reserved steel plates 9-1 on the steel concrete beam 9;
then, after the next-layer side wall 3 and the next-layer side wall 2 are connected by adopting a grouting sleeve 7 or a grouting anchor, a formwork is supported at the joint area of the next-layer side wall 2 and the next-layer side wall 3, a composite floor precast slab is poured, and a cast-in-situ reinforced concrete layer is obtained at the joint area of the next-layer side wall 2 and the composite floor precast slab, the cast-in-situ reinforced concrete layer is overlapped with the composite floor precast slab to obtain a composite floor 5, and the composite floor 5 is the next-layer floor;
then, a sealing horizontal steel bar 12 is placed between the reserved U-shaped steel bars 2-1 of the two adjacent lower two-layer side walls 2 and between the reserved U-shaped steel bars 2-1 of the two adjacent lower two-layer side walls 3, a vertical steel bar 13 is inserted between the U-shaped steel bars 2-1 and the sealing horizontal steel bar 12, a shaping template is adopted for supporting a mould, and concrete is poured to fill gaps between the two adjacent lower two-layer side walls 2 and the two adjacent lower side walls 3;
Finally, pouring concrete into the steel pipe at the upper end of the steel pipe of the next layer, pouring concrete into the steel pipe from the upper end of the steel pipe, sleeving an outer reinforcing ring node 10 at the upper end of the steel pipe, reserving a short beam on the outer reinforcing ring node 10, and connecting the steel concrete beam 9 with the short beam reserved on the outer reinforcing ring node 10 by using a bolt welding mode to form a concrete composite beam of the steel pipe of the next layer;
step six, assembling a top plate:
the roof 6 comprises roof components 6-3, the structure of the roof components 6-3 is the same as that of the composite floor 5, a composite floor precast slab is hoisted between a next layer of steel pipe concrete composite beam and a next layer of side wall 3, a pre-buried steel bar head 1-2 on the composite floor precast slab is welded with a reserved steel plate 9-1 on a steel concrete beam 9, a formwork is supported in the joint area between the next layer of side wall 3 and the roof components 6-3, and the composite floor precast slab is poured by concrete to obtain a cast-in-situ reinforced concrete layer to form the roof components 6-3, so that the roof 6 is formed.
The invention has the following beneficial effects: the invention relates to an assembled steel-concrete mixed structure subway station and an assembling method, and the assembled steel-concrete mixed structure subway station has the following advantages: (1) The structure is an assembled integral structure, the assembly degree is high, the construction speed is high, the on-site wet operation is less, the area occupied by stacking and processing construction materials can be greatly reduced, and the influence on traffic and surrounding environment is reduced; (2) The steel pipe concrete column is adopted as the column, the beam is a steel-concrete combined beam, the combined member has high bearing capacity and good anti-seismic performance, and the anti-seismic performance of the whole structure can be greatly improved and is obviously superior to that of a common reinforced concrete structure; (3) The connection node adopts on-site casting concrete, so that the structural integrity is better, and the node area is prevented from becoming a waterproof weak area, thereby being beneficial to ensuring the waterproof effect of the subway station. In addition, the invention has the advantages of high construction speed, high assembly degree, environment friendliness, energy conservation, good earthquake resistance and the like.
Drawings
FIG. 1 is a schematic diagram of a first embodiment of the present invention;
FIG. 2 is an exploded view of FIG. 1;
FIG. 3 is a schematic structural view of a base plate;
FIG. 4 is a schematic view of a grouting sleeve connection structure
FIG. 5 is a schematic diagram of the connection structure of the concrete filled steel tubular column and the bottom plate;
FIG. 6 is a schematic structural view of a concrete filled steel tube composite beam;
FIG. 7 is a top view of a steel concrete beam;
FIG. 8 is a schematic view of a prefabricated slab of a composite floor slab;
FIG. 9 is a schematic diagram of a connection structure between side walls;
FIG. 10 is a top view of FIG. 9;
FIG. 11 is a schematic view of a mating dovetail configuration of a long dome member and a short dome member;
fig. 12 is a schematic structural diagram of a second embodiment of the present invention;
FIG. 13 is a partially exploded view of FIG. 12;
in the figure, the steel pipe is characterized by comprising a 1-bottom plate, a 2-lower two-layer side wall, a 3-lower layer side wall, a 4-steel pipe concrete column, a 5-laminated floor slab, a 6-top plate, a 7-grouting sleeve, an 8-end bearing plate, a 9-steel concrete beam, a 10-external reinforcing ring node, a 12-closed horizontal steel bar, a 13-vertical steel bar, a 14-lining steel pipe section, a 1-1-embedded bolt, a 1-2-embedded steel bar head, a 2-1-U-shaped steel bar, a 5-1-reinforced concrete bottom plate, a 5-2-steel bar truss, a 5-3-polystyrene foam plate, a 6-1-long arch roof component, a 6-2-short arch roof component, a 6-3-top plate component and a 9-1-reserved steel plate.
Detailed Description
The first embodiment is as follows:
embodiments of the present invention will be described with reference to fig. 1 to 11: the invention relates to an assembled steel-concrete mixed structure subway station with an arch structure, which is shown in figures 1 and 2, and comprises a bottom plate 1, a lower two-layer side wall 2, a lower one-layer side wall 3, a steel pipe concrete combined beam, a laminated floor slab 5 and a top plate 6, wherein two sides of the bottom plate 1 are respectively connected with the lower two-layer side wall 2, the lower two-layer side wall 2 is provided with the lower one-layer side wall 3, the laminated floor slab 5 is horizontally arranged between the lower two-layer side wall 2 and the lower one-layer side wall 3, the steel pipe concrete combined beam is arranged between the laminated floor slab 5 and the bottom plate 1, the top plate 6 is arranged on the lower one-layer side wall 3 and is positioned above the laminated floor slab 5, the top plate 6 comprises a long arch top member 6-1 and a short arch member 6-2, the long arch member 6-1 is matched with the short arch member 6-2 to form a arch member, the arch member is connected with the lower one-layer side wall 3 through a grouting sleeve 7 or a slurry anchor, and each arch member is spliced to form the top plate 6. The arrangement is that the bottom plate 1 adopts a cast-in-situ reinforced concrete structure, the requirement on the flatness of the foundation is low, the integrity is good, the waterproof effect is good, the bottom plate assembly can be advanced, and the assembly construction speed of the rest parts is not influenced; the lower two-layer side wall 2 and the lower side wall 3 are prefabricated reinforced concrete shear walls, the components are linear, steel bar binding, formwork supporting, pouring and the like are easy, the prefabrication construction difficulty is low, and the quality is easy to ensure; the steel tube concrete composite beam adopts a steel tube concrete column, the steel tube can be used as a permanent template of concrete, the concrete adopts pumping construction, the construction speed is high, the steel tube is basically equivalent to assembly, the steel tube can provide lateral constraint effect for the concrete, the strength and the ductility of the concrete can be greatly improved, meanwhile, the concrete is used as lateral support of the steel tube, the local buckling of the steel tube can be avoided or delayed, and the interaction between the steel tube and the concrete enables the components to have the advantages of high bearing capacity, good anti-seismic performance and the like; meanwhile, the steel-concrete composite beam is adopted, so that the advantages of steel tensile and concrete compression resistance are fully exerted, and the steel-concrete composite beam has the advantages of high bearing capacity, high rigidity, good earthquake resistance and dynamic performance, convenience in construction and the like; the composite floor slab 5 adopts a concrete hollow slab composite slab, the composite floor slab 5 is an assembled integral floor slab formed by superposing composite floor slab precast slabs and cast-in-situ reinforced concrete layers, and the composite floor slab precast slabs are not only components of a floor slab structure, but also permanent templates of the cast-in-situ reinforced concrete layers. The reinforced concrete truss has the advantages of good integrity, high rigidity, template saving, high construction speed and the like, polystyrene foam plates 5-3 are distributed between the reinforced concrete trusses 5-2 to form the hollow laminated slab, and the slab weight is reduced and the temperature and sound insulation performance is improved on the premise that the bearing capacity, the rigidity and the like of the components are ensured to meet the requirements.
The method for assembling the subway station with the arch structure and the assembled steel-concrete mixed structure comprises the following steps:
step one, preparing a prefabricated part:
the prefabricated member comprises a lower two-layer side wall 2, a lower side wall 3, a composite floor precast slab, a long arch top member 6-1, a short arch top member 6-2 and a steel concrete beam 9;
as shown in fig. 4, the lower two-layer side wall 2 is a preset reinforced concrete shear wall, embedded bar heads 1-2 are reserved at the upper end and the lower end of the lower two-layer side wall 2, and U-shaped steel bars 2-1 are reserved at the two side wall edges of the lower two-layer side wall 2;
the structure of the next-layer side wall 3 is the same as that of the next-layer side wall 2;
as shown in fig. 8, the composite floor slab 5 is formed by superposing a composite floor slab precast slab and a cast-in-situ reinforced concrete layer, the composite floor slab precast slab comprises a reinforced concrete bottom plate 5-1, a reinforced truss 5-2 and a polystyrene foam plate 5-3, pre-buried reinforced bar heads 1-2 are reserved on two side edges of the reinforced concrete bottom plate 5-1, the reinforced truss 5-2 is uniformly arranged on the reinforced concrete bottom plate 5-1, and the polystyrene foam plate 5-3 is arranged between the adjacent reinforced truss 5-2;
one end of the long arch top member 6-1 is of a joggle joint structure, and an embedded bar head 1-2 is reserved at the other end of the long arch top member 6-1; one end of the short vault member 6-2 is a structure matched with the joggle structure of the long vault member 6-1, and the other end of the short vault member 6-2 is provided with an embedded bar head 1-2;
As shown in fig. 7, the outer side of the steel concrete beam 9 is a steel plate, concrete is poured on the inner side of the steel plate, and an embedded bar head 1-2 and a reserved steel plate 9-1 are reserved on the upper side of the steel concrete beam 9;
step two, assembling a bottom plate:
as shown in fig. 3, the assembly of the bottom plate 1 is carried out in the excavated foundation pit, the bottom plate 1 adopts a cast-in-situ reinforced concrete structure, the bottom plate 1 is a line-crossed reinforced concrete bottom plate with a U-shaped structure, embedded steel bar heads 1-2 are reserved on two sides of the U-shaped structure, and embedded bolts 1-1 are uniformly distributed in the middle of the U-shaped structure of the bottom plate 1;
step three, splicing the lower two layers of side walls:
as shown in fig. 4, the lower two-layer side wall 2 is a preset reinforced concrete shear wall, two sides of the bottom plate 1 are respectively connected with the lower two-layer side wall 2 through grouting sleeves 7 or slurry anchors, and a gap is reserved between two adjacent lower two-layer side walls 2 positioned on the same side of the bottom plate 1;
fourth, assembling the lower two-layer steel tube concrete composite beam:
the steel tube concrete composite beam comprises a steel tube concrete column 4 and a steel concrete beam 9, wherein the steel tube concrete column 4 is a steel tube with concrete poured inside;
as shown in fig. 5, the lower end of a steel pipe is connected with an embedded bolt 1-1 arranged on a bottom plate 1 through a fixed mounting end bearing plate 8, concrete is poured into the steel pipe from the upper end of the steel pipe, then an outer reinforcing ring node 10 is sleeved at the upper end of the steel pipe, and a short beam is reserved on the outer reinforcing ring node 10; as shown in fig. 6, the steel concrete beam 9 is connected with the short beam reserved on the external reinforcement ring node 10 by bolt welding to form a lower two-layer steel tube concrete composite beam;
Step five, assembling a lower two-layer floor slab and a lower side wall:
the lower two-layer floor slab is a composite floor slab 5, and the composite floor slab 5 is formed by superposing a composite floor slab precast slab and a cast-in-situ reinforced concrete layer;
firstly, placing a precast slab of the composite floor slab between a lower two-layer side wall 2 and a steel concrete beam 9, and welding an embedded bar head 1-2 on the precast slab of the composite floor slab with a reserved steel plate 9-1 on the steel concrete beam 9;
then the next-layer side wall 3 and the next-layer side wall 2 are connected by adopting a grouting sleeve 7 or a slurry anchor;
then, formwork is supported in the junction area of the lower two-layer side wall 2 and the lower side wall 3, a composite floor slab precast slab is poured, and cast-in-situ reinforced concrete layers are obtained in the junction area of the lower two-layer side wall 2, the lower one-layer side wall 3 and the composite floor slab precast slab, the cast-in-situ reinforced concrete layers and the composite floor slab precast slab are overlapped to obtain a composite floor slab 5, and the composite floor slab 5 is the lower two-layer floor slab;
as shown in fig. 9 and 10, finally, a closed horizontal steel bar 12 is placed between the reserved U-shaped steel bars 2-1 of two adjacent lower two-layer side walls 2 and between the reserved U-shaped steel bars 2-1 of two adjacent lower two-layer side walls 3, a vertical steel bar 13 is inserted between the U-shaped steel bars 2-1 and the closed horizontal steel bar 12, a shaping template is adopted for supporting a mould, and concrete is poured to fill gaps between the two adjacent lower two-layer side walls 2 and the two adjacent lower two-layer side walls 3;
Step six, assembling a top plate:
as shown in fig. 11, a long arch top member 6-1 and a short arch top member 6-2 are matched and joggled to form an arch top member, the arch top member is connected with the next layer of side wall 3 through a grouting sleeve 7 or a slurry anchor, and each arch top member is spliced by staggered joints to form a top plate 6; the two sides of the top plate 6 are respectively connected with the next layer of side wall 3 through the embedded bar heads 1-2 of the long arch top member 6-1 and the short arch top member 6-2 by the grouting sleeve 7 or the slurry anchor.
The second embodiment is as follows:
another embodiment of the present invention will be described with reference to fig. 3 to 10, 12 and 13: the invention discloses an assembled steel-concrete mixed structure subway station with a rectangular structure, which is shown in fig. 12 and comprises a bottom plate 1, a lower two-layer side wall 2, a lower layer side wall 3, a steel pipe concrete composite beam, a superposed floor slab 5 and a top plate 6, wherein two sides of the bottom plate 1 are respectively connected with the lower two-layer side wall 2, the lower two-layer side wall 2 is provided with the lower side wall 3, the superposed floor slab 5 is horizontally arranged between the lower two-layer side wall 2 and the lower side wall 3, the steel pipe concrete composite beam is arranged between the superposed floor slab 5 and the bottom plate 1, the top plate 6 is arranged on the lower side wall 3 and is positioned above the superposed floor slab 5, the top plate 6 comprises a top plate component 6-3, the structure of the top plate component 6-3 is identical to that of the superposed floor slab 5, the top plate component 6-3 is arranged on the lower side wall 3, and the steel pipe concrete composite beam is arranged between the top plate component 6-3 and the superposed floor slab 5.
The method for assembling the subway station with the rectangular structure and the assembled steel-concrete mixed structure comprises the following steps:
step one, preparing a prefabricated part:
the prefabricated member comprises a lower two-layer side wall 2, a lower side wall 3, a composite floor precast slab, a steel concrete beam 9 and a roof component 6-3;
as shown in fig. 4, the lower two-layer side wall 2 is a preset reinforced concrete shear wall, embedded bar heads 1-2 are reserved at the upper end and the lower end of the lower two-layer side wall 2, and U-shaped steel bars 2-1 are reserved at the two side wall edges of the lower two-layer side wall 2;
the structure of the next-layer side wall 3 is the same as that of the next-layer side wall 2;
as shown in fig. 8, the precast slab of the composite floor slab comprises a reinforced concrete bottom plate 5-1, a steel bar truss 5-2 and polystyrene foam plates 5-3, wherein embedded steel bar heads 1-2 are reserved on two side edges of the reinforced concrete bottom plate 5-1, the steel bar trusses 5-2 are uniformly arranged on the reinforced concrete bottom plate 5-1, and the polystyrene foam plates 5-3 are arranged between the adjacent steel bar trusses 5-2;
as shown in fig. 6 and 7, the outer side of the steel concrete beam 9 is a steel plate, concrete is poured on the inner side of the steel plate, and an embedded steel bar head 1-2 and a reserved steel plate 9-1 are reserved on the upper side of the steel concrete beam 9;
the roof component 6-3 has the same structure as the composite floor 5, and is formed by laminating composite floor precast slabs and cast-in-situ reinforced concrete layers;
Step two, assembling a bottom plate:
as shown in fig. 3, the assembly of the bottom plate 1 is carried out in the excavated foundation pit, the bottom plate 1 adopts a cast-in-situ reinforced concrete structure, the bottom plate 1 is a line-crossed reinforced concrete bottom plate with a U-shaped structure, embedded steel bar heads 1-2 are reserved on two sides of the U-shaped structure, and embedded bolts 1-1 are uniformly distributed in the middle of the U-shaped structure of the bottom plate 1;
step three, splicing the lower two layers of side walls:
the lower two-layer side wall 2 is a preset reinforced concrete shear wall, two sides of the bottom plate 1 are respectively connected with the lower two-layer side wall 2 through grouting sleeves 7 or slurry anchors, and a gap is reserved between two adjacent lower two-layer side walls 2 positioned on the same side of the bottom plate 1;
fourth, assembling the lower two-layer steel tube concrete composite beam:
the steel tube concrete composite beam comprises a steel tube concrete column 4 and a steel concrete beam 9, wherein the steel tube concrete column 4 is a steel tube with concrete poured inside;
as shown in fig. 5 and 6, the lower end of a steel pipe is connected with an embedded bolt 1-1 arranged on a bottom plate 1 through a fixed mounting end bearing plate 8 in a lower two-layer, concrete is poured into the steel pipe from the upper end of the steel pipe, then an outer reinforcing ring node 10 is sleeved at the upper end of the steel pipe, a short beam is reserved on the outer reinforcing ring node 10, and a steel concrete beam 9 is connected with the short beam reserved on the outer reinforcing ring node 10 through bolt welding, so that a lower two-layer steel pipe concrete composite beam is formed;
Step five, assembling a next layer of steel tube concrete composite beam, a next two layers of floorslab and a next layer of side wall:
as shown in fig. 13, the lower end of the steel pipe is vertically butted with the upper end of the steel pipe of the lower two-layer steel pipe concrete composite beam through the lining steel pipe section 14 in the next layer, and the steel pipe of the next layer and the steel pipe of the lower two layers are welded by adopting a full penetration vortex port welding seam;
secondly, placing the precast slab of the composite floor slab between the lower two-layer side wall 2 and the steel concrete beam 9 of the lower two-layer steel tube concrete composite beam, and welding the embedded bar heads 1-2 on the precast slab of the composite floor slab with the reserved steel plates 9-1 on the steel concrete beam 9;
then, after the next-layer side wall 3 and the next-layer side wall 2 are connected by adopting a grouting sleeve 7 or a grouting anchor, a formwork is supported at the joint area of the next-layer side wall 2 and the next-layer side wall 3, a composite floor precast slab is poured, and a cast-in-situ reinforced concrete layer is obtained at the joint area of the next-layer side wall 2 and the composite floor precast slab, the cast-in-situ reinforced concrete layer is overlapped with the composite floor precast slab to obtain a composite floor 5, and the composite floor 5 is the next-layer floor;
as shown in fig. 9 and 10, then placing a closed horizontal steel bar 12 between the reserved U-shaped steel bars 2-1 of two adjacent lower two-layer side walls 2 and between the reserved U-shaped steel bars 2-1 of two adjacent lower two-layer side walls 3, inserting a vertical steel bar 13 between the U-shaped steel bars 2-1 and the closed horizontal steel bar 12, supporting a mould by adopting a shaping mould, and pouring concrete to fill gaps between the two adjacent lower two-layer side walls 2 and the two adjacent lower side walls 3;
Finally, pouring concrete into the steel pipe at the upper end of the steel pipe of the next layer, pouring concrete into the steel pipe from the upper end of the steel pipe, sleeving an outer reinforcing ring node 10 at the upper end of the steel pipe, reserving a short beam on the outer reinforcing ring node 10, and connecting the steel concrete beam 9 with the short beam reserved on the outer reinforcing ring node 10 by using a bolt welding mode to form a concrete composite beam of the steel pipe of the next layer;
step six, assembling a top plate:
the roof 6 comprises roof components 6-3, the structure of the roof components 6-3 is the same as that of the composite floor 5, a composite floor precast slab is hoisted between a next layer of steel pipe concrete composite beam and a next layer of side wall 3, a pre-buried steel bar head 1-2 on the composite floor precast slab is welded with a reserved steel plate 9-1 on a steel concrete beam 9, a formwork is supported in the joint area between the next layer of side wall 3 and the roof components 6-3, and the composite floor precast slab is poured by concrete to obtain a cast-in-situ reinforced concrete layer to form the roof components 6-3, so that a rectangular roof 6 is formed.
The present embodiment is only exemplary of the present patent, and does not limit the scope of protection thereof, and those skilled in the art may also change the part thereof, so long as the spirit of the present patent is not exceeded, and the present patent is within the scope of protection thereof.
Claims (7)
1. The utility model provides an assembled steel-concrete mixed structure subway station which characterized in that: the composite floor comprises a bottom plate (1), a lower two-layer side wall (2), a lower layer side wall (3), a steel tube concrete composite beam, a composite floor (5) and a top plate (6), wherein two sides of the bottom plate (1) are respectively connected with the lower two-layer side wall (2), the lower two-layer side wall (2) is provided with the lower side wall (3), the composite floor (5) is horizontally arranged between the lower two-layer side wall (2) and the lower side wall (3), the steel tube concrete composite beam is arranged between the composite floor (5) and the bottom plate (1), and the top plate (6) is arranged on the lower side wall (3) and is positioned above the composite floor (5);
the bottom plate (1) is a line-crossed reinforced concrete bottom plate with a U-shaped structure, embedded steel bar heads (1-2) are reserved on two sides of the U-shaped structure, and embedded bolts (1-1) are uniformly distributed in the middle of the U-shaped structure of the bottom plate (1);
the lower two-layer side wall (2) is a preset reinforced concrete shear wall, embedded steel bar heads (1-2) are reserved at the upper end and the lower end of the lower two-layer side wall (2), and U-shaped steel bars (2-1) are reserved at the two side wall edges of the lower two-layer side wall (2); the embedded steel bar heads (1-2) reserved on the lower two-layer side wall (2) are connected with the embedded steel bar heads (1-2) reserved on the bottom plate (1) through slurry anchors, and gaps are reserved between two adjacent lower two-layer side walls (2) positioned on the same side of the bottom plate (1);
The steel tube concrete composite beam comprises a steel tube concrete column (4) and a steel tube concrete beam (9), wherein the steel tube concrete column (4) is a steel tube for pouring concrete inside, an outer reinforcing ring node (10) is sleeved at the upper end of the steel tube concrete column (4), a short beam is reserved on the outer reinforcing ring node (10), the steel tube concrete beam (9) is arranged between two adjacent steel tube concrete columns (4), the steel tube concrete beam (9) is connected with the short beam reserved on the outer reinforcing ring node (10) through bolt welding, and an embedded steel bar head (1-2) and a reserved steel plate (9-1) are reserved at the upper end of the steel tube concrete beam (9);
the lower end of the steel tube concrete column (4) is connected with an embedded bolt (1-1) arranged on the bottom plate (1) through a fixed mounting end bearing plate (8) to realize the mounting of the steel tube concrete composite beam and the bottom plate (1);
the composite floor slab (5) is formed by superposing a composite floor slab precast slab and a cast-in-situ reinforced concrete layer, the composite floor slab precast slab comprises a reinforced concrete bottom plate (5-1), reinforced truss (5-2) and polystyrene foam plates (5-3), embedded reinforced bar heads (1-2) are reserved on two side edges of the reinforced concrete bottom plate (5-1), the reinforced truss (5-2) is uniformly arranged on the reinforced concrete bottom plate (5-1), and the polystyrene foam plates (5-3) are arranged between the adjacent reinforced truss (5-2); the precast slab of the composite floor slab is arranged between the lower two-layer side wall (2) and the steel concrete beam (9), and the embedded bar heads (1-2) on the precast slab of the composite floor slab are welded with the reserved steel plates (9-1) on the steel concrete beam (9);
The structure of the lower layer side wall (3) is the same as that of the lower two layers of side walls (2), and the lower layer side wall (3) is connected with the lower two layers of side walls (2) by adopting a slurry anchor; and put into and seal horizontal bar (12) between U shaped steel muscle (2-1) of two adjacent lower two-layer side walls (2) and between U shaped steel muscle (2-1) of two adjacent lower one-layer side walls (3), insert vertical bar (13) between U shaped steel muscle (2-1) and the horizontal bar (12), pour the gap between two adjacent lower two-layer side walls (2) and two adjacent lower one-layer side walls (3) of concrete filling, cast-in-place reinforced concrete pour on coincide floor prefabricated slab and be located the juncture area of lower one-layer side wall (3) and lower two-layer side wall (2).
2. The fabricated steel-concrete hybrid structure subway station of claim 1, wherein: the roof (6) comprises long arch roof members (6-1) and short arch roof members (6-2), one long arch roof member (6-1) and one short arch roof member (6-2) are joggled together to form one arch roof member, the arch roof members are connected with the next layer of side wall (3) through slurry anchors, and each arch roof member is spliced by staggering joints to form the roof (6).
3. The fabricated steel-concrete hybrid structure subway station of claim 1, wherein: the roof (6) comprises roof components (6-3), the structure of the roof components (6-3) is the same as that of the composite floor slab (5), the roof components (6-3) are placed on the next layer of side wall (3), and a steel tube concrete composite beam is arranged between the roof components (6-3) and the composite floor slab (5).
4. A fabricated steel-concrete hybrid structure subway station according to claim 3, wherein: the steel pipes of the steel pipe concrete composite beam between the top plate component (6-3) and the composite floor slab (5) penetrate through the composite floor slab (5), and are vertically butted with the steel pipes of the steel pipe concrete composite beam between the composite floor slab (5) and the bottom plate (1) through lining steel pipe sections (14), and the steel pipes are welded by adopting full penetration vortex port welding seams.
5. The fabricated steel-concrete hybrid structure subway station of claim 4, wherein: the connecting structure of the top plate component (6-3) and the steel tube concrete composite beam is the same as the connecting structure of the composite floor slab (5) and the steel tube concrete composite beam, and the connecting structure of the top plate component (6-3) and the next-layer side wall (3) is the same as the connecting structure of the composite floor slab (5) and the next-layer side wall (2).
6. A method of assembling an assembled steel-concrete hybrid subway station according to any one of claims 1 to 2, characterized in that: the method comprises the following steps:
step one, preparing a prefabricated part:
the prefabricated member comprises a lower two-layer side wall (2), a lower side wall (3), a composite floor precast slab, a long arch top member (6-1), a short arch top member (6-2) and a steel concrete beam (9);
the lower two-layer side wall (2) is a preset reinforced concrete shear wall, embedded steel bar heads (1-2) are reserved at the upper end and the lower end of the lower two-layer side wall (2), and U-shaped steel bars (2-1) are reserved at the two side wall edges of the lower two-layer side wall (2);
the structure of the next-layer side wall (3) is the same as that of the next-layer side wall (2);
the composite floor precast slab comprises a reinforced concrete bottom plate (5-1), steel bar trusses (5-2) and polystyrene foam plates (5-3), wherein embedded steel bar heads (1-2) are reserved on two side edges of the reinforced concrete bottom plate (5-1), the steel bar trusses (5-2) are uniformly arranged on the reinforced concrete bottom plate (5-1), and the polystyrene foam plates (5-3) are arranged between the adjacent steel bar trusses (5-2);
one end of the long arch top member (6-1) is of a joggle joint structure, and an embedded bar head (1-2) is reserved at the other end of the long arch top member (6-1); one end of the short vault component (6-2) is a structure matched with the joggle structure of the long vault component (6-1), and the other end of the short vault component (6-2) is provided with an embedded bar head (1-2);
The outside of the steel concrete beam (9) is provided with a steel plate, concrete is poured on the inside of the steel plate, and an embedded bar head (1-2) and a reserved steel plate (9-1) are reserved on the upper side of the steel concrete beam (9);
step two, assembling a bottom plate:
assembling a bottom plate (1) in the excavated foundation pit, wherein the bottom plate (1) adopts a cast-in-situ reinforced concrete structure, the bottom plate (1) is a line-crossed reinforced concrete bottom plate with a U-shaped structure, embedded steel bar heads (1-2) are reserved on two sides of the U-shaped structure, and embedded bolts (1-1) are uniformly distributed in the middle of the U-shaped structure of the bottom plate (1);
step three, splicing the lower two layers of side walls:
the lower two-layer side wall (2) is a preset reinforced concrete shear wall, two sides of the bottom plate (1) are respectively connected with the lower two-layer side wall (2) through slurry anchors, and a gap is reserved between two adjacent lower two-layer side walls (2) positioned on the same side of the bottom plate (1);
fourth, assembling the lower two-layer steel tube concrete composite beam:
the steel tube concrete composite beam comprises a steel tube concrete column (4) and a steel concrete beam (9), wherein the steel tube concrete column (4) is a steel tube with concrete poured inside;
the lower end of the steel pipe is connected with an embedded bolt (1-1) arranged on a bottom plate (1) through a fixed mounting end bearing plate (8), concrete is poured into the steel pipe from the upper end of the steel pipe, then an outer reinforcing ring node (10) is sleeved at the upper end of the steel pipe, a short beam is reserved on the outer reinforcing ring node (10), and a steel concrete beam (9) is connected with the short beam reserved on the outer reinforcing ring node (10) through bolt welding, so that a lower two-layer steel pipe concrete combined beam is formed;
Step five, assembling a lower two-layer floor slab and a lower side wall:
the lower two-layer floor slab is a composite floor slab (5), and the composite floor slab (5) is formed by superposing a composite floor slab precast slab and a cast-in-situ reinforced concrete layer;
firstly, placing a precast slab of the composite floor slab between a lower two-layer side wall (2) and a steel concrete beam (9), and welding an embedded bar head (1-2) on the precast slab of the composite floor slab with a reserved steel plate (9-1) on the steel concrete beam (9);
then, the next-layer side wall (3) and the next-layer side wall (2) are connected by adopting a slurry anchor;
then, supporting a mould at the junction area of the lower two-layer side wall (2) and the lower one-layer side wall (3), pouring a composite floor slab precast slab and the junction area of the lower two-layer side wall (2) and the lower one-layer side wall (3) and the composite floor slab precast slab to obtain a cast-in-situ reinforced concrete layer, and superposing the cast-in-situ reinforced concrete layer and the composite floor slab precast slab to obtain a composite floor slab (5), wherein the composite floor slab (5) is the lower two-layer floor slab;
finally, placing closed horizontal steel bars (12) between the U-shaped steel bars (2-1) of two adjacent lower two-layer side walls (2) and between the U-shaped steel bars (2-1) of two adjacent lower two-layer side walls (3), inserting vertical steel bars (13) between the U-shaped steel bars (2-1) and the closed horizontal steel bars (12), supporting a mould by adopting a shaping mould, and pouring concrete to fill gaps between the two adjacent lower two-layer side walls (2) and the two adjacent lower two-layer side walls (3);
Step six, assembling a top plate:
a long arch top member (6-1) and a short arch top member (6-2) are matched and joggled to form an arch top member, the arch top member is connected with the next layer of side wall (3) through a slurry anchor, and each arch top member is joggled and spliced to form a top plate (6); two sides of the top plate (6) are respectively connected with the next layer of side wall (3) through slurry anchors by the embedded bar heads (1-2) of the long arch-top member (6-1) and the short arch-top member (6-2).
7. A method of assembling an assembled steel-concrete hybrid subway station according to any one of claims 3 to 5, characterized in that: the method comprises the following steps:
step one, preparing a prefabricated part:
the prefabricated member comprises a lower two-layer side wall (2), a lower side wall (3), a composite floor slab prefabricated plate, a steel concrete beam (9) and a roof component (6-3);
the lower two-layer side wall (2) is a preset reinforced concrete shear wall, embedded steel bar heads (1-2) are reserved at the upper end and the lower end of the lower two-layer side wall (2), and U-shaped steel bars (2-1) are reserved at the two side wall edges of the lower two-layer side wall (2);
the structure of the next-layer side wall (3) is the same as that of the next-layer side wall (2);
The composite floor precast slab comprises a reinforced concrete bottom plate (5-1), steel bar trusses (5-2) and polystyrene foam plates (5-3), wherein embedded steel bar heads (1-2) are reserved on two side edges of the reinforced concrete bottom plate (5-1), the steel bar trusses (5-2) are uniformly arranged on the reinforced concrete bottom plate (5-1), and the polystyrene foam plates (5-3) are arranged between the adjacent steel bar trusses (5-2);
the outside of the steel concrete beam (9) is provided with a steel plate, concrete is poured on the inside of the steel plate, and an embedded bar head (1-2) and a reserved steel plate (9-1) are reserved on the upper side of the steel concrete beam (9);
the roof component (6-3) and the composite floor slab (5) have the same structure and are formed by superposing prefabricated slabs of the composite floor slab and cast-in-situ reinforced concrete layers;
step two, assembling a bottom plate:
assembling a bottom plate (1) in the excavated foundation pit, wherein the bottom plate (1) adopts a cast-in-situ reinforced concrete structure, the bottom plate (1) is a line-crossed reinforced concrete bottom plate with a U-shaped structure, embedded steel bar heads (1-2) are reserved on two sides of the U-shaped structure, and embedded bolts (1-1) are uniformly distributed in the middle of the U-shaped structure of the bottom plate (1);
step three, splicing the lower two layers of side walls:
The lower two-layer side wall (2) is a preset reinforced concrete shear wall, two sides of the bottom plate (1) are respectively connected with the lower two-layer side wall (2) through slurry anchors, and a gap is reserved between two adjacent lower two-layer side walls (2) positioned on the same side of the bottom plate (1);
fourth, assembling the lower two-layer steel tube concrete composite beam:
the steel tube concrete composite beam comprises a steel tube concrete column (4) and a steel concrete beam (9), wherein the steel tube concrete column (4) is a steel tube with concrete poured inside;
the lower end of the steel pipe is connected with an embedded bolt (1-1) arranged on a bottom plate (1) through a fixed mounting end bearing plate (8) in the lower two layers, concrete is poured into the steel pipe from the upper end of the steel pipe, an outer reinforcing ring node (10) is sleeved at the upper end of the steel pipe, a short beam is reserved on the outer reinforcing ring node (10), and a steel concrete beam (9) is connected with the short beam reserved on the outer reinforcing ring node (10) through bolt welding, so that a lower two-layer steel pipe concrete composite beam is formed;
step five, assembling a next layer of steel tube concrete composite beam, a next two layers of floorslab and a next layer of side wall:
firstly, vertically butting the lower end of a steel pipe with the upper end of a steel pipe of a lower two-layer steel pipe concrete composite beam through a lining steel pipe section (14) in the next layer, and welding the steel pipe of the next layer with the steel pipe of the lower two layers by adopting a full penetration vortex port weld;
Secondly, placing the precast slab of the composite floor slab between a lower two-layer side wall (2) and a steel concrete beam (9) of a lower two-layer steel tube concrete composite beam, and welding an embedded bar head (1-2) on the precast slab of the composite floor slab with a reserved steel plate (9-1) on the steel concrete beam (9);
then, after the next-layer side wall (3) and the next-layer side wall (2) are connected by adopting a slurry anchor, a formwork is supported at the joint area of the next-layer side wall (2) and the next-layer side wall (3), a composite floor precast slab and the joint area of the next-layer side wall (2) and the next-layer side wall (3) and the composite floor precast slab are poured to obtain a cast-in-situ reinforced concrete layer, the cast-in-situ reinforced concrete layer and the composite floor precast slab are superposed to obtain a composite floor slab (5), and the composite floor slab (5) is the next-layer floor slab;
then, a closed horizontal steel bar (12) is put between the reserved U-shaped steel bars (2-1) of the two adjacent lower two-layer side walls (2) and between the reserved U-shaped steel bars (2-1) of the two adjacent lower two-layer side walls (3), a vertical steel bar (13) is inserted between the U-shaped steel bars (2-1) and the closed horizontal steel bar (12), a shaping template is adopted for supporting a mould, and concrete is poured to fill gaps between the two adjacent lower two-layer side walls (2) and the two adjacent lower side walls (3);
Finally, pouring concrete into the steel tube at the upper end of the steel tube of the next layer, pouring concrete into the steel tube from the upper end of the steel tube, sleeving an outer reinforcing ring node (10) at the upper end of the steel tube, reserving short beams on the outer reinforcing ring node (10), and connecting the steel concrete beam (9) with the short beams reserved on the outer reinforcing ring node (10) by bolt welding to form a concrete composite beam of the steel tube of the next layer;
step six, assembling a top plate:
the roof (6) comprises roof components (6-3), the structure of the roof components (6-3) is the same as that of the composite floor slab (5), a composite floor slab precast slab is hoisted between a next layer of steel pipe concrete composite beam and a next layer of side wall (3), a pre-buried steel bar head (1-2) on the composite floor slab precast slab and a reserved steel plate (9-1) on a steel concrete beam (9) are welded, a formwork is supported in a junction area between the next layer of side wall (3) and the roof components (6-3), and the composite floor slab precast slab is cast in place by concrete to form a cast-in-situ reinforced concrete layer to form the roof components (6-3), so as to form the roof (6).
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| CN111305247A (en) * | 2019-11-28 | 2020-06-19 | 上海泾东建筑发展有限公司 | Installation process of box type foundation formwork on upper side of subway cover plate |
| CN113026805A (en) * | 2021-03-23 | 2021-06-25 | 中铁第四勘察设计院集团有限公司 | Grouting prefabricated part connecting node structure and assembled underground station |
| CN113026804A (en) * | 2021-03-23 | 2021-06-25 | 中铁第四勘察设计院集团有限公司 | Spring lock assembly, prefabricated part connecting node and assembled underground station |
| CN113047863A (en) * | 2021-04-06 | 2021-06-29 | 深圳市市政设计研究院有限公司 | Mechanized underground excavation assembly type subway station and construction method thereof |
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