CN214657223U - Industrial built underground station structure - Google Patents

Abstract

The utility model provides an underground station structure is built to industrialization, including cast-in-place bottom plate, prefabricated side wall, first U-shaped crossbeam, second U-shaped crossbeam, hat roof beam, first longeron, the vertical anti-roof beam of second, prefabricated stand, vertical anchor rope, the horizontal anchor rope of first horizontal anchor rope and second. Only need the side wall of prefabricated profile square, U-shaped crossbeam and stand, can prefabricate the manifold component of length through the relative position of adjusting the tip mould, in order to adapt to the complicated demand of mountain region urban rail transit industrialization construction underground station structure, the mould is with low costs, it is simple with the installation industry to prefabricate, adopt horizontal stretch-draw of anchor rope and vertical stretch-draw simultaneously, make each prefabricated component monolithic connection, ensure station structural integrity, the anchor rope still has the function of undertaking station later stage load, the anchor rope not only is the component of undertaking of monolithic connection but also structure later stage load, full play its performance.

Description

Industrial built underground station structure

Technical Field

The utility model relates to an underground works construction field, concretely relates to underground station structure is built to industrialization.

Background

When an existing subway station is built, prefabricated components (the specific structure can refer to a 'prefabricated subway station component assembling equipment vehicle' in the Chinese utility model patent with the publication number of CN204984433U and the attached drawing 1 thereof) are adopted at present, 7 prefabricated components are arranged in each ring, and each prefabricated component comprises 3 cast-in-place bottom plates, 2 side walls and 2 top plates, and the weight of each component is 31t at the lightest and 55t at the heaviest; the types of prefabricated components are multiple, the profile is complex, and the cost of the die is high; the width of each ring is 2m, the blocks and the rings are all tensioned in a joggle joint mode and by finish rolling deformed steel bars, the connection is in a point type, the integral stability is poor, and the method is not suitable for earthquake regions, mountain bias sections and regions with large foundation settlement; each component is a standard component, and the structural design of each station is required to be uniform, so that the structural size diversification of the station is not facilitated, and the urban adaptability to the complex construction environment is poor; the peripheral seam of station is too much, only through connecting sealed facility and being difficult to satisfy the requirement of 100 years durability designs of underground works, the later stage easily appears the infiltration phenomenon.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides an industrially-built underground station structure, which solves the technical problems that the subway station adopts a prefabricated assembly type structure, the types of prefabricated components are many, the profile is complex, the cost of a mold is high, and the overall stability is poor due to the adoption of a connection mode of joggling and finish rolling deformed steel bar tensioning; meanwhile, the problems that the manufacturing and installation precision is high, the construction difficulty is high, and the waterproof durability of the joint cannot meet the design for 100 years are solved.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

the utility model provides an underground station structure for industrialized construction, which comprises a cast-in-place bottom plate, a prefabricated side wall, a first U-shaped cross beam, a second U-shaped cross beam, a crown beam, a first longitudinal beam, a second longitudinal counter beam, a prefabricated upright post, a longitudinal anchor cable, a first transverse anchor cable and a second transverse anchor cable; station outer wall bodies are arranged on two sides of the top surface of the cast-in-place bottom plate and are formed by sequentially splicing a plurality of prefabricated side walls; the first U-shaped cross beam and the second U-shaped cross beam are connected between the two opposite prefabricated side walls, the first U-shaped cross beam is connected with the waist of the prefabricated side wall to form a station middle plate supporting structure, and the second U-shaped cross beam is connected with the crown beam to form a station top plate supporting structure; the crown beam is positioned at the top end of the station outer wall body; the top surface of the cast-in-place bottom plate is also provided with a plurality of prefabricated stand columns, the prefabricated stand columns are longitudinally arranged along a station at intervals, a first longitudinal beam and a second longitudinal reverse beam are arranged between every two adjacent prefabricated stand columns, the first longitudinal beam is connected with a first U-shaped cross beam, and the second longitudinal reverse beam is connected with a second U-shaped cross beam; the longitudinal anchor cable penetrates through all the prefabricated side walls on the same side of the station at the same time, and two ends of the longitudinal anchor cable are respectively anchored on the outer sides of the outer walls of the two stations so as to press all the prefabricated side walls on the same side of the station; the first transverse anchor cable simultaneously penetrates through two opposite prefabricated side walls and a first U-shaped cross beam connected between the two prefabricated side walls, and two ends of the first transverse anchor cable are respectively anchored on the outer sides of the two prefabricated side walls so as to press the two opposite prefabricated side walls and the first U-shaped cross beam connected between the two prefabricated side walls; the second transverse anchor cable penetrates through the two crown beams and the second U-shaped cross beam connected between the two crown beams, and two ends of the second transverse anchor cable are anchored on the outer sides of the two crown beams respectively so as to press the two crown beams and the second U-shaped cross beam connected between the two crown beams.

Optionally, prefabricated side wall waist is equipped with first bracket towards first U-shaped crossbeam one side, prefabricated side wall top is equipped with the second bracket towards second U-shaped crossbeam one side, first U-shaped crossbeam supports at first bracket top surface, second U-shaped crossbeam supports simultaneously at second bracket top surface and prefabricated side wall top surface.

Optionally, open slots are formed in two sides of each prefabricated side wall, the open slots of two adjacent prefabricated side walls are surrounded to form a grouting cavity, and expansion concrete is filled in the grouting cavity.

Optionally, a first through hole is formed in the side wall of the first U-shaped cross beam, the steel reinforcement framework of the first longitudinal beam comprises a plurality of first main reinforcements, and at least one first main reinforcement penetrates through the first through hole; the side wall of the second U-shaped cross beam is provided with a second through hole, the steel bar framework of the second longitudinal reversed beam comprises a plurality of second main bars, and at least one second main bar penetrates through the second through hole; the first main rib and the second main rib are both flexible steel cables.

Optionally, the top surfaces of the first U-shaped cross beam and the second U-shaped cross beam are provided with connecting steel bars, the top surfaces of the first U-shaped cross beam and the second U-shaped cross beam are provided with folded plates, the top surfaces of the folded plates are provided with cast-in-place reinforced concrete layers, and steel reinforcement cages in the cast-in-place reinforced concrete layers are overlapped with the connecting steel bars to form an integral steel reinforcement framework.

Optionally, a cavity is formed in the prefabricated side wall, a first reserved steel bar is arranged on the top surface of the cast-in-place bottom plate, and the first reserved steel bar extends into the cavity; the inner wall of the bottom of the prefabricated side wall is provided with grouting holes, the grouting holes are communicated with the cavity and used for injecting back pouring concrete into the cavity, and the height of the back pouring concrete is lower than the lower edge of the grouting holes so that accumulated liquid in the cavity can be discharged through the grouting holes.

Optionally, a door-shaped opening is formed in the bottom of the prefabricated side wall, and the door-shaped opening is communicated with the cavity; the top surface of the cast-in-place bottom plate is also provided with a second reserved steel bar, the second reserved steel bar is connected with the first reserved steel bar through a door-shaped opening to form an integral steel bar cage, so that the later poured concrete covers the steel bar cage, and triangular haunches are built on two sides of the bottom end of the prefabricated side wall.

Optionally, the top surface of the prefabricated side wall is provided with first extension steel bars, and two ends of the second U-shaped cross beam are provided with second extension steel bars; the top surface of the station outer wall body is also provided with a longitudinal connecting rib, and the longitudinal connecting rib, the first extending reinforcing steel bar and the second extending reinforcing steel bar are bound and connected to form a reinforcing steel bar framework of the crown beam.

According to the above technical scheme, the beneficial effects of the utility model are that:

the utility model provides an underground station structure is built to industrialization, including cast-in-place bottom plate, prefabricated side wall, first U-shaped crossbeam, second U-shaped crossbeam, hat roof beam, first longeron, the vertical anti-roof beam of second, prefabricated stand, vertical anchor rope, the horizontal anchor rope of first horizontal anchor rope and second. Arranging corbels with corresponding layers on the prefabricated side walls according to the requirement of the station layers; the prefabricated U-shaped cross beams are respectively erected on the corresponding layers of brackets in the side walls; transverse anchor cables are arranged in each layer of U-shaped cross beam, transversely penetrate through the U-shaped cross beam and are anchored on the outer sides of the side walls at the corresponding two ends, and the side walls and each layer of U-shaped cross beam are connected into a transverse frame unit; a plurality of transverse frame units are combined into an integral station frame along the longitudinal direction of the station, longitudinal anchor cables simultaneously penetrate through the side walls of the transverse frame units and are anchored outside the side walls at the two ends, and the transverse units are connected in series to form a station framework structure; after the main structure is assembled, the light folding plate is arranged at the top of the web plate of the U-shaped beam in a lap mode to form an operation platform; and binding floor slab reinforcing steel bars on the operation platform and casting the stair slab concrete for the second time. Only need the side wall of prefabricated profile square, U-shaped crossbeam and stand, can prefabricate the manifold component of length through the relative position of adjusting the tip mould, in order to adapt to the complicated demand of mountain region urban rail transit industrialization construction underground station structure, the mould is with low costs, it is simple with the installation industry to prefabricate, adopt horizontal stretch-draw of anchor rope and vertical stretch-draw simultaneously, make each prefabricated component monolithic connection, ensure station structural integrity, the anchor rope still has the function of undertaking station later stage load, the anchor rope not only is the component of undertaking of monolithic connection but also structure later stage load, full play its performance.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a schematic perspective view of an industrially constructed underground station structure;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is an enlarged view at B of FIG. 1;

FIG. 4 is a schematic view of a crown beam steel reinforcement cage;

FIG. 5 is a structural view of a first U-shaped beam;

FIG. 6 is a front view of an industrially constructed underground station structure;

FIG. 7 is an enlarged view at C of FIG. 6;

FIG. 8 is a schematic structural view of a prefabricated side wall;

FIG. 9 is a cross-sectional view of a prefabricated sidewall;

reference numerals:

1-a cast-in-place bottom plate, 2-prefabricated side walls, 3-a first U-shaped cross beam, 4-a second U-shaped cross beam, 5-a crown beam, 6-a first longitudinal beam, 7-a second longitudinal reverse beam, 8-prefabricated upright columns and 9-folding plates;

11-second reserved steel bars, 12-triangular haunches, 21-first corbels, 22-second corbels, 23-first transverse holes, 24-cavities, 25-open grooves, 26-longitudinal holes, 27-grouting holes, 28-door-shaped openings, 29-first extension steel bars, 31-first transverse through holes, 32-connecting steel bars, 33-first through holes, 41-second transverse through holes, 42-second extension steel bars and 51-second transverse holes;

101-longitudinal anchor cable, 102-first transverse anchor cable, 103-second transverse anchor cable, 104-tensioning piece, 241-first inner cavity, 242-second inner cavity and 243-diversion hole.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

Referring to fig. 1 and 6, the utility model provides an industrially-built underground station structure, including cast-in-place bottom plate 1, prefabricated side wall 2, first U-shaped crossbeam 3, second U-shaped crossbeam 4, crown beam 5, first longeron 6, the vertical anti-roof beam 7 of second, prefabricated stand 8, vertical anchor rope 101, first horizontal anchor rope 102 and the horizontal anchor rope 103 of second. Wherein. The prefabricated side wall 2, the first U-shaped cross beam 3, the second U-shaped cross beam 4 and the prefabricated stand column 8 are prefabricated components, the cast-in-place bottom plate 1, the crown beam 5, the middle-plate floor plate and the top plate floor are formed by cast-in-place, and the middle-plate floor plate and the top plate floor plate are constructed without supports.

The utility model discloses a cast-in-place bottom plate, prefabricated side wall 2, cast-in-place bottom plate 1 top surface both sides are equipped with the station outer wall body, the station outer wall body is by a plurality of prefabricated side wall 2 splices in proper order and forms. The first U-shaped cross beam 3 and the second U-shaped cross beam 4 are connected between the two opposite prefabricated side walls 2, the first U-shaped cross beam 3 is connected with the waist of the prefabricated side walls 2 to form a station middle plate supporting structure, and the second U-shaped cross beam 4 is connected with the crown beam 5 to form a station top plate supporting structure. Specifically, a first bracket 21 is arranged on one side of the waist of the prefabricated side wall 2, which faces the first U-shaped cross beam 3, a second bracket 22 is arranged on one side of the top of the prefabricated side wall 2, which faces the second U-shaped cross beam 4, and the first U-shaped cross beam 3 is supported on the top surface of the first bracket 21, so that the prefabricated side wall 2 provides a supporting force for the first U-shaped cross beam 3; the second U-shaped cross beam 4 is simultaneously supported on the top surface of the second bracket 22 and the top surface of the prefabricated side wall 2, so that the prefabricated side wall 2 provides a supporting force for the second U-shaped cross beam 4 and shares the load applied to the second U-shaped cross beam 4 by the backfill at the top of the station. The crown beam 5 is positioned at the top end of the outer wall body of the station.

The top surface of the cast-in-place bottom plate 1 is further provided with a plurality of prefabricated stand columns 8, the prefabricated stand columns 8 are arranged at intervals along the longitudinal direction of a station, the stand columns are usually arranged in a station equipment area, a public area can not be arranged, and the station equipment area and the public area can be separated by changing the span of the adjacent prefabricated stand columns 8. A first longitudinal beam 6 and a second longitudinal reverse beam 7 are arranged between every two adjacent prefabricated upright columns 8, the first longitudinal beam 6 is connected with the first U-shaped cross beam 3, and the second longitudinal reverse beam 7 is connected with the second U-shaped cross beam 4. In one embodiment, referring to fig. 5, a first through hole 33 is formed in a side wall of the first U-shaped cross beam 3, a steel reinforcement framework of the first longitudinal beam 6 includes a plurality of first main reinforcements, and at least one first main reinforcement penetrates through the first through hole 33; the side wall of the second U-shaped cross beam 4 is provided with a second through hole, the steel bar framework of the second longitudinal reverse beam 7 comprises a plurality of second main bars, and at least one second main bar penetrates through the second through hole; the first main rib and the second main rib are both flexible steel cables.

Referring to fig. 6 and 7, the longitudinal anchor cable 101 simultaneously penetrates all the prefabricated side walls 2 located on the same side of the station, and both ends of the longitudinal anchor cable 101 are anchored to the outer sides of the outer walls of the two stations through the tensioning members 104, so as to press all the prefabricated side walls 2 located on the same side of the station. The first transverse anchor cable 102 simultaneously penetrates through the two opposite prefabricated side walls 2 and the first U-shaped cross beam 3 connected between the two prefabricated side walls 2, and two ends of the first transverse anchor cable 102 are respectively anchored on the outer sides of the two prefabricated side walls 2 through tension members 104, so that the two opposite prefabricated side walls 2 and the first U-shaped cross beam 3 connected between the two prefabricated side walls 2 are compressed. The second transverse anchor cable 103 simultaneously penetrates through the two crown beams 5 and the second U-shaped cross beam 4 connected between the two crown beams 5, and two ends of the second transverse anchor cable 103 are respectively anchored at the outer sides of the two crown beams 5 through tension members 104, so as to press the two crown beams 5 and the second U-shaped cross beam 4 connected between the two crown beams 5. The tension member 104 is a lock nut or an anchor, and the lock nut or the anchor is disposed at both ends of the anchor cable. In one embodiment, the side wall of the prefabricated side wall 2 is provided with a first longitudinal hole 26, and the longitudinal anchor cable 101 penetrates through all the prefabricated side walls 2 located on the same side of the station through the first longitudinal hole 26; a first transverse hole 23 is formed in the prefabricated side wall 2, a first transverse through hole 31 is formed in the first cross beam, the first transverse hole 23 corresponds to the first transverse through hole 31 in position, and the first transverse anchor cable 102 penetrates through the first transverse hole 23 and the first transverse through hole 31 simultaneously; the crown beam 5 is provided with a second transverse hole 51, the second transverse beam is also provided with a second transverse through hole 41, and the second transverse anchor cable 103 simultaneously penetrates through the second transverse hole 51 and the second transverse through hole 41.

According to the requirement of the number of the station layers, brackets with the corresponding number of the layers are arranged on the prefabricated side wall 2; the prefabricated U-shaped cross beams are respectively erected on the corresponding layers of brackets in the side walls; transverse anchor cables are arranged in each layer of U-shaped cross beam, transversely penetrate through the U-shaped cross beam and are anchored on the outer sides of the side walls at the corresponding two ends, and the side walls and each layer of U-shaped cross beam are connected into a transverse frame unit; a plurality of transverse frame units are combined into an integral station frame along the longitudinal direction of the station, a longitudinal anchor cable 101 simultaneously penetrates through the side walls of the transverse frame units and is anchored outside the side walls at two ends, and the transverse units are connected in series to form a station framework structure; after the main structure is assembled, the light folding plate 9 is erected at the top of the web plate of the U-shaped beam to form an operation platform; and binding floor slab reinforcing steel bars on the operation platform and casting the stair slab concrete for the second time. Only need the side wall of prefabricated profile square, U-shaped crossbeam and stand, can prefabricate the manifold component of length through the relative position of adjusting the tip mould, in order to adapt to the complicated demand of mountain region urban rail transit industrialization construction underground station structure, the mould is with low costs, it is simple with the installation industry to prefabricate, adopt horizontal stretch-draw of anchor rope and vertical stretch-draw simultaneously, make each prefabricated component monolithic connection, ensure station structural integrity, the anchor rope still has the function of undertaking station later stage load, the anchor rope not only is the component of undertaking of monolithic connection but also structure later stage load, full play its performance.

As a further improvement of the scheme, open grooves 25 are formed in two sides of each prefabricated side wall 2, the open grooves 25 of two adjacent prefabricated side walls 2 are encircled to form a grouting cavity, and expansion concrete is filled in the grouting cavity. After the expansive concrete is poured into the grouting cavities formed in all the side walls, the prefabricated side walls 2 are tightly connected through tensioning by the longitudinal anchor cables 101, and the joint of the two adjacent prefabricated side walls 2 has good waterproof performance due to the application of the expansive concrete.

As a further improvement to the above scheme, the top surfaces of the first U-shaped cross beam 3 and the second U-shaped cross beam 4 are both provided with connecting steel bars 32, the top surfaces of the first U-shaped cross beam 3 and the second U-shaped cross beam 4 are both paved with folded plates 9, a cast-in-place reinforced concrete layer is paved on the top surfaces of the folded plates 9, and a reinforcement cage inside the cast-in-place reinforced concrete layer and the connecting steel bars 32 are mutually lapped to form an integral reinforcement cage. Specifically, after the folding plate 9 is laid on the top surface of the first U-shaped cross beam 3, a middle plate floor plate of the station is poured, and after the folding plate 9 is laid on the top surface of the second U-shaped cross beam 4, a top plate floor plate of the station is poured. The folding plate 9 is light in weight and convenient for workers to carry and install.

As a further improvement to the above solution, please refer to fig. 8-9, a cavity 24 is formed in the prefabricated side wall 2 to reduce the weight of the wall. Preferably, said cavity 24 comprises a first internal cavity 241 and a second internal cavity 242; the first inner cavity 241 is arranged below the first U-shaped cross beam 3 and penetrates through the prefabricated side wall 2; the second inner cavity 242 is arranged between the first U-shaped cross beam 3 and the second U-shaped cross beam 4 to ensure that the joint of the prefabricated side wall 2 and the first U-shaped cross beam 3 and the joint of the prefabricated side wall 2 and the second U-shaped cross beam 4 are solid sections so as to increase the structural strength of the joint. Preferably, the second inner cavity 242 is communicated with the first inner cavity 241 through a diversion hole 243, the inner wall of the bottom of the prefabricated side wall 2 is provided with a grouting hole 27, and the grouting hole 27 is communicated with the first inner cavity 241 so as to inject concrete into the first inner cavity 241, thereby realizing the connection between the prefabricated side wall 2 and a station bottom plate. Concrete is poured into the first inner cavity 241 through the grouting holes 27, and the cavity 24 at the bottom of the prefabricated side wall 2 is densely filled, so that the connection firmness of the prefabricated side wall 2 and a station foundation is enhanced. In one embodiment, referring to fig. 2, a first reserved steel bar is arranged on the top surface of the cast-in-place bottom plate 1, and the first reserved steel bar extends into the cavity 24; the inner wall of the bottom of the prefabricated side wall 2 is provided with grouting holes 27, the grouting holes 27 are communicated with the cavity 24 and used for injecting post-poured concrete into the cavity 24, and the post-poured concrete is lower than the lower edges of the grouting holes 27 so that accumulated liquid in the cavity 24 can be discharged through the grouting holes 27.

For the further connection steadiness that increases prefabricated side wall 2 and station ground, prefabricated side wall 2 bottom is equipped with door type opening 28, door type opening 28 and first inner chamber 241 intercommunication, slip casting hole 27 is located the top of door type opening 28. The reinforcing steel bars are reserved at the installation positions of the prefabricated side walls 2 of the station foundation, the reinforcing steel bars inside the first inner cavity 241 and the reinforcing steel bars outside the side walls are bound into a cage through the door-shaped openings 28, and finally concrete is poured to fill the bottom of the first inner cavity 241 and the areas of the door-shaped openings 28, so that the connection strength of the prefabricated side walls 2 and the station foundation is enhanced, and the structural integrity of the station is enhanced. In one embodiment, the top surface of the cast-in-place bottom plate 1 is further provided with a second reserved steel bar 11, the second reserved steel bar 11 and the first reserved steel bar are connected into an integral steel bar cage through a door-shaped opening 28, so that the later poured concrete covers the steel bar cage, triangular haunches 12 are built on two sides of the bottom end of the prefabricated side wall 2, and the connection strength between the upper prefabricated member and the cast-in-place bottom plate 1 is enhanced, namely the structural integrity of a station is enhanced. The distance between the grouting hole 27 and the bottom surface of the prefabricated side wall 2 is 1.4-1.5 m, and the diameter of the grouting hole 27 is 130-160 mm. After the concrete in the first inner cavity 241 is solidified and formed, the grouting holes 27 are used as draining holes for seeping liquid on the side wall of the prefabricated side wall 2. When the longitudinal anchor cable 101 is assembled and tensioned by the plurality of transverse segment units, concrete is poured into the first inner cavity 241 through the grouting holes 2717, and simultaneously concrete is synchronously poured on the inner wall and the outer wall of the prefabricated side wall 2, so that a post-cast reinforced concrete wet joint of the prefabricated side wall 2 and the station bottom plate is formed.

As a further improvement to the above scheme, the top surface of the prefabricated side wall 2 is provided with first extension steel bars 29, and both ends of the second U-shaped cross beam 4 are provided with second extension steel bars 42; the top surface of the station outer wall body is also provided with a longitudinal connecting rib, and the longitudinal connecting rib, the first extending reinforcing steel bar 29 and the second extending reinforcing steel bar 42 are bound and connected to form a reinforcing steel bar framework of the crown beam 5. The crown beam 5 can be integrally cast at one time after all the segment prefabricated side walls 2 are hoisted in place to form an integral beam; the segmented beams can be formed by independently pouring when the single segments are spliced, the length of each segmented beam is smaller than the width of the prefabricated side wall 2, connecting ribs are reserved on two sides of each segmented beam, so that the adjacent segmented beams can be integrally poured through the reserved connecting ribs in the later period, all the segmented beams are integrally connected, and finally the whole beam is formed.

The utility model provides a pair of industrialization builds underground station structure's construction method, including following step:

s1, excavating a station foundation pit and laying a base cushion layer;

s2, binding a steel reinforcement framework and a reserved connecting rib required by the bottom plate on the base cushion layer, and pouring concrete based on the steel reinforcement framework of the bottom plate to form a cast-in-situ bottom plate;

s3, assembling the first section, hoisting the two prefabricated side walls of the first section to preset positions of the top surface of the cast-in-place bottom plate, and fixing the two prefabricated side walls by adopting temporary support; hoisting the first U-shaped cross beam and temporarily locking two ends of the first U-shaped cross beam on first brackets of the two prefabricated side walls; hoisting a second U-shaped beam and temporarily locking two ends of the second U-shaped beam on second brackets of the two prefabricated side walls; a first transverse anchor cable is pulled between the prefabricated side wall and the first U-shaped cross beam in a penetrating manner, and two ends of the first transverse anchor cable are anchored on the outer side of the prefabricated side wall;

s4, assembling a second section, hoisting two prefabricated side walls of the second section to preset positions of the top surface of the cast-in-place bottom plate, and locking the prefabricated side walls of the second section on the prefabricated side walls of the first section through longitudinal tensioning anchor rods; hoisting the first U-shaped cross beam and temporarily locking two ends of the first U-shaped cross beam on first brackets of the two prefabricated side walls; hoisting a second U-shaped beam and temporarily locking two ends of the second U-shaped beam on second brackets of the two prefabricated side walls; a first transverse anchor cable is pulled between the prefabricated side wall and the first U-shaped cross beam in a penetrating manner, and two ends of the first transverse anchor cable are anchored on the outer side of the prefabricated side wall;

s5, sequentially splicing the rest sections according to the step S4;

after the current three segments are assembled, the three segments are connected in series through the longitudinal anchor rods in the step S4, that is, the three segments have good integrity and stability, and the prefabricated side wall to be assembled later does not need to be supported temporarily, that is, the prefabricated side wall to be installed later can ensure the stability of the prefabricated side wall by locking the prefabricated side wall to the prefabricated side wall of the previous segment through the longitudinal anchor rods in the step S4;

s6, arranging an upright column at intervals of 2-4 sections, arranging the sections of the upright columns as required, hoisting the prefabricated upright columns to a specified position, anchoring the lower ends of the prefabricated upright columns on the bottom plate by adopting temporary locking members, and connecting the top ends of the prefabricated upright columns with two adjacent second U-shaped cross beams; s7, pulling the longitudinal anchor cable in a penetrating manner to enable the longitudinal anchor cable to penetrate through all the prefabricated side walls located on the same side of the station, and anchoring two ends of the longitudinal anchor cable to the outer sides of the prefabricated side walls to enable all the sections to be tightly attached to form the integral station;

s8, filling expansion concrete in a grouting cavity formed between the adjacent prefabricated side walls;

s9, pouring a crown beam on the top surface of the prefabricated side wall;

the crown beam can be integrally cast at one time after all the segment prefabricated side walls are hoisted in place to form an integral beam; the segmented beams can also be formed by independently pouring when the single segments are spliced, the length of each segmented beam is smaller than the width of the prefabricated side wall, and connecting steel bars are reserved on two sides of each segmented beam, so that the adjacent segmented beams are poured into a whole through the reserved connecting steel bars in the later period, all the segmented beams are connected into a whole, and finally the whole beam is formed;

s10, respectively pulling a second transverse anchor cable between the crown beam and the second U-shaped cross beam for each section, and anchoring the second transverse anchor cable at the outer side of the crown beam;

s11, pouring a first longitudinal beam at the waist of the prefabricated upright post, and pouring the first longitudinal beam and all the first U-shaped cross beams into a whole; pouring a second longitudinal reverse beam on the top of the prefabricated stand column, and pouring the second longitudinal reverse beam and all the second U-shaped cross beams into a whole;

s12, pouring a station middle plate and a station top plate, laying a folding plate on the top surface of the first U-shaped beam, binding floor slab reinforcing steel bars, pouring concrete to form the station middle plate, laying a folding plate on the top surface of the second U-shaped beam, binding floor slab reinforcing steel bars, and pouring concrete to form the station top plate;

s13, pouring a connecting section of the prefabricated side wall and the cast-in-place bottom plate, and pouring a connecting section of the prefabricated upright post and the cast-in-place bottom plate;

specifically, a door-shaped opening is arranged at the bottom of the prefabricated side wall and is communicated with a cavity, reinforcing steel bars are reserved at the mounting position of the prefabricated side wall on the station foundation, the reinforcing steel bars in the cavity and the reinforcing steel bars outside the side wall are bound into a cage through the door-shaped opening, and finally concrete is poured to fill the bottom of the cavity and the area of the door-shaped opening, so that pouring of the connecting section of the prefabricated side wall and the cast-in-place bottom plate can be completed; the upright posts are provided with steel bars on the bottom plate, the embedded steel bars are positioned on the outer sides of the upright posts, and after S1-S12 is finished, steel bar cages are bound on the outer sides of the upright posts, and concrete is poured to form connecting nodes;

and S14, waterproofing the outer layer of the construction station, and backfilling the foundation pit.

According to the station structure and the construction method thereof, the station structure has the following advantages:

1. the prefabricated parts are few in types and simple in profile, the prefabricated parts with different sizes are prefabricated by adopting the adjustable die, the requirements of different standard station structures in engineering are met, and the adaptability is high.

2. The bottom plate is cast in situ without a template bracket, the construction is convenient and rapid, the integrity is strong, compared with a prefabricated bottom plate, the phenomenon of void is not easy to occur, and the foundation stability is provided for an upper prefabricated structure; after the bottom plate is poured and molded, a good operation platform is provided for the installation and positioning of the upper prefabricated part.

3. The anchor cables are adopted for transverse tensioning and longitudinal tensioning, and the side plates and the bottom plate are connected through mortise and tenon joints, so that the whole connection of all prefabricated parts is simple and reliable, and the structure stability is good.

4. The shaping is pour to the station bottom plate, and adjacent both sides wall seam crossing pours the expansive concrete in the wall body of station, and concrete layer is pour at the station top for station bottom, both sides and top waterproof nature are good, and it is many to overcome traditional prefabricated assembled station seam, and waterproof durability is not enough defect, and the waterproof structure that this patent embodiment provided is equivalent with the cast-in-place station water-proof effects of tradition, can satisfy the requirement of 100 year durability designs.

5. The station top plate and the middle floor plate are supported on the U-shaped cross beam through the folding plates to form a floor plate operation platform, so that the support-free construction operation of the cast-in-place floor plate is realized, the construction efficiency is improved, the engineering investment is reduced, and the structural integrity is enhanced.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims (8)

1. An industrially-built underground station structure is characterized by comprising a cast-in-place bottom plate (1), prefabricated side walls (2), a first U-shaped cross beam (3), a second U-shaped cross beam (4), a crown beam (5), a first longitudinal beam (6), a second longitudinal counter beam (7), prefabricated stand columns (8), longitudinal anchor cables (101), first transverse anchor cables (102) and second transverse anchor cables (103); station outer walls are arranged on two sides of the top surface of the cast-in-place bottom plate (1), and are formed by sequentially splicing a plurality of prefabricated side walls (2); the first U-shaped cross beam (3) and the second U-shaped cross beam (4) are connected between the two opposite prefabricated side walls (2), the first U-shaped cross beam (3) is connected with the waist of the prefabricated side walls (2) to form a station middle plate supporting structure, and the second U-shaped cross beam (4) is connected with the crown beam (5) to form a station top plate supporting structure; the crown beam (5) is positioned at the top end of the outer wall body of the station; the top surface of the cast-in-place bottom plate (1) is further provided with a plurality of prefabricated stand columns (8), the prefabricated stand columns (8) are arranged at intervals along the longitudinal direction of a station, a first longitudinal beam (6) and a second longitudinal counter beam (7) are arranged between every two adjacent prefabricated stand columns (8), the first longitudinal beam (6) is connected with the first U-shaped cross beam (3), and the second longitudinal counter beam (7) is connected with the second U-shaped cross beam (4);

the longitudinal anchor cable (101) penetrates through all the prefabricated side walls (2) located on the same side of the station at the same time, and two ends of the longitudinal anchor cable (101) are respectively anchored on the outer sides of the outer wall bodies of the two stations so as to press all the prefabricated side walls (2) located on the same side of the station; the first transverse anchor cable (102) penetrates through two opposite prefabricated side walls (2) and a first U-shaped cross beam (3) connected between the two prefabricated side walls (2) at the same time, and two ends of the first transverse anchor cable (102) are respectively anchored on the outer sides of the two prefabricated side walls (2) so as to press the two opposite prefabricated side walls (2) and the first U-shaped cross beam (3) connected between the two prefabricated side walls (2) tightly; the second transverse anchor cable (103) penetrates through the two crown beams (5) and the second U-shaped cross beam (4) connected between the two crown beams (5) at the same time, and two ends of the second transverse anchor cable (103) are respectively anchored at the outer sides of the two crown beams (5) so as to press the two crown beams (5) and the second U-shaped cross beam (4) connected between the two crown beams (5).

2. The industrially-built underground station structure according to claim 1, wherein: prefabricated side wall (2) waist is equipped with first bracket (21) towards first U-shaped crossbeam (3) one side, prefabricated side wall (2) top is equipped with second bracket (22) towards second U-shaped crossbeam (4) one side, first U-shaped crossbeam (3) support at first bracket (21) top surface, second U-shaped crossbeam (4) support simultaneously at second bracket (22) top surface and prefabricated side wall (2) top surface.

3. The industrially-built underground station structure according to claim 1, wherein: open slots (25) are formed in two sides of each prefabricated side wall (2), the open slots (25) of every two adjacent prefabricated side walls (2) are encircled to form a grouting cavity, and expansion concrete is filled in the grouting cavity.

4. The industrially-built underground station structure according to claim 1, wherein: a first through hole (33) is formed in the side wall of the first U-shaped cross beam (3), a steel bar framework of the first longitudinal beam (6) comprises a plurality of first main bars, and at least one first main bar penetrates through the first through hole (33); a second through hole is formed in the side wall of the second U-shaped cross beam (4), a steel bar framework of the second longitudinal reverse beam (7) comprises a plurality of second main bars, and at least one second main bar penetrates through the second through hole; the first main rib and the second main rib are both flexible steel cables.

5. The industrially-built underground station structure according to claim 1, wherein: first U-shaped crossbeam (3) and second U-shaped crossbeam (4) top surface all are equipped with connecting reinforcement (32), folded sheet (9) have all been laid to first U-shaped crossbeam (3) and second U-shaped crossbeam (4) top surface, cast-in-place reinforced concrete layer has been laid to folded sheet (9) top surface, the inside steel reinforcement cage of cast-in-place reinforced concrete layer with connecting reinforcement (32) overlap joint each other, form whole steel skeleton.

6. The industrially-built underground station structure according to claim 1, wherein: a cavity (24) is formed in the prefabricated side wall (2), a first reserved steel bar is arranged on the top surface of the cast-in-place bottom plate (1), and the first reserved steel bar extends into the cavity (24); prefabricated side wall (2) bottom inner wall is equipped with slip casting hole (27), slip casting hole (27) and cavity (24) intercommunication, in order to be used for to pour into back cast concrete in cavity (24), back cast concrete height is less than slip casting hole (27) lower edge so that hydrops is discharged through slip casting hole (27) in cavity (24).

7. The industrially-built underground station structure according to claim 6, wherein: the bottom of the prefabricated side wall (2) is provided with a door-shaped opening (28), and the door-shaped opening (28) is communicated with the cavity (24); cast-in-place bottom plate (1) top surface still is equipped with second and reserves reinforcing bar (11), second is reserved reinforcing bar (11) and is connected into whole steel reinforcement cage through door type opening (28) with first reservation reinforcing bar, so that the back concreting cladding steel reinforcement cage, and prefabricated side wall (2) bottom both sides are built into triangle-shaped and are added armpit (12).

8. The industrially constructed underground station structure according to any one of claims 1 to 7, wherein: the top surface of the prefabricated side wall (2) is provided with first extension steel bars (29), and two ends of the second U-shaped cross beam (4) are provided with second extension steel bars (42); the top surface of the station outer wall body is also provided with a longitudinal connecting rib, and the longitudinal connecting rib, the first extending reinforcing steel bar (29) and the second extending reinforcing steel bar (42) are bound and connected to form a reinforcing steel bar framework of the crown beam (5).

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