CN216950423U - Anti structure of floating of push pipe method assembled subway station - Google Patents

Abstract

The utility model discloses an anti-floating structure of a pipe jacking method assembly type subway station, which comprises two second assemblies which are oppositely arranged, wherein each second assembly is formed by splicing a plurality of second splicing rings, fractures are formed in the same positions of the second splicing rings, the fractures on the second splicing rings are connected with one another to form connectors, a reinforced soil body is arranged between the two second assemblies, the connectors on the two second assemblies are opposite in position, a channel reinforced steel-concrete frame is fixedly arranged along the inner periphery of each connector, a connecting channel and an anti-pulling pile are further arranged in the reinforced soil body, two ends of the connecting channel are respectively and fixedly connected with the channel reinforced steel-concrete frame, the anti-pulling pile is positioned in the reinforced soil body below the connecting channel, and the top of the anti-pulling pile is fixedly connected with the bottom of the connecting channel. The anti-floating requirement of subway stations in water-rich soft soil areas can be met, the problem that the anti-floating capacity of a traditional underground-excavated station is insufficient due to shallow top soil covering is solved, and the technical short slab of the underground-excavated fabricated station is made up.

Description

Pipe jacking method assembled subway station's anti structure of floating

Technical Field

The utility model belongs to the technical field of underground structures and construction, and particularly relates to an anti-floating structure of a pipe jacking assembly type subway station.

Background

Along with the expansion of cities and the increase of population, urban subway wire nets are more and more dense, and the construction pace is also urgently needed to be accelerated. The prefabricated assembly type technology is used as an industrial construction mode of an underground structure, has remarkable advantages in the aspects of improving engineering quality, accelerating construction speed, reducing occupied area, saving materials, saving labor, protecting environment, lowering carbon and the like, and meets the national policy guidance and strategic requirements. The construction of the subway station is generally divided into an open excavation method and a subsurface excavation method. The open cut method is adopted for construction, roads are generally occupied, traveling of residents is influenced, pipelines are changed, and the like, so that social and economic benefits are not obvious; the construction by the underground excavation method does not need a traditional foundation pit enclosing structure and a supporting system, the construction can be carried out without excavating a road surface, closing traffic and transferring pipelines, but because the earth covering at the top of the subway station is generally shallow, the underground wall and the capping beam are generally combined to realize the anti-floating of the subway station in the open excavation method station in a water-rich soft soil area, and the anti-floating construction difficulty of the current station adopting the underground excavation method is higher, so that the anti-floating construction method of the pipe jacking method assembly type subway station needs to be designed to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an anti-floating structure of a pipe jacking method assembly type subway station, which is particularly suitable for underground space anti-floating construction by adopting an underground excavation method.

In order to solve the technical problems, the utility model adopts the technical scheme that:

the utility model provides an anti structure of floating of push pipe method assembled subway station, includes the second subassembly of two relative settings, the second subassembly is formed by the concatenation of a plurality of second concatenation rings the same position on the second concatenation ring has seted up the fracture, and is a plurality of fracture on the second concatenation ring links to each other and forms the connector on the second subassembly, two be provided with between the second subassembly and consolidate the soil body, two on the second subassembly connector position is relative, follows the fixed channel that is provided with in interior week of connector strengthens the steel-concrete frame, still be provided with connecting channel and uplift pile in the reinforcement soil body, the connecting channel both ends respectively with the channel is strengthened steel-concrete frame fixed connection, the uplift pile is located in the reinforcement soil body of connecting channel below, just the top of uplift pile with connecting channel bottom fixed connection.

Preferably, the second concatenation ring is enclosed to close by a roof prefabricated section, a side wall prefabricated section, a bottom plate prefabricated section and two connection prefabricated sections and forms, and the fracture setting is two between the connection prefabricated section, just be located two at the middle part of fracture and be provided with the bracket prefabricated section between the connection prefabricated section, the bracket prefabricated section will the connector is separated for upper and lower two parts be provided with the bracket structure on the side wall prefabricated section, the structural fixedly connected with medium plate prefabricated section of bracket, the medium plate prefabricated section other end with the bracket prefabricated section is connected.

So set up, reduced the construction degree of difficulty, improved work efficiency.

Preferably, the channel reinforcing steel-concrete frame can be independently arranged above and/or below the bracket precast block which divides the connecting port into two parts.

So set up, can consolidate the connector and can support bracket prefabricated section and medium plate again, make whole more stable firm.

Preferably, the prefabricated blocks which surround the second splicing ring are mutually matched through a tenon and mortise structure.

So set up, improved anti-shear capacity, promoted the holistic compressive capacity of concatenation ring simultaneously.

Preferably, epoxy resin glue is smeared at seams of the prefabricated blocks which surround the second splicing ring and connected by bolts, the middle plate prefabricated block positioned at the inner side of the second splicing ring is connected and fixed with the bracket structure and the bracket prefabricated block by anchor bolts, and fine concrete is poured into the seams.

So set up, improved the leakproofness of box, prevent that the condition of leaking from appearing in seam crossing.

Preferably, connecting channel includes passageway roof, passageway bottom plate and passageway side wall, the passageway bottom plate with bracket prefabricated section below reinforced concrete frame fixed connection is strengthened to the passageway, the passageway roof with bracket prefabricated section top reinforced concrete frame fixed connection is strengthened to the passageway, the passageway side wall with bracket prefabricated section top and/or below the equal fixed connection of reinforced concrete frame is strengthened to the passageway.

So set up, can accomplish the intercommunication to the box, simultaneously can effectively satisfy anti floating requirement with the combination of the anti-floating pile of bottom and channel enhancement steel reinforced concrete frame.

Preferably, a channel middle plate is further arranged in the connecting channel, and the channel middle plate is fixedly connected with the channel side walls and is located between the channel top plate and the channel bottom plate.

So set up, accomplished the layering to the connection and the inside of box, space utilization is high.

The utility model has the advantages and positive effects that:

1. the anti-floating requirement of subway stations in water-rich soft soil areas can be met, the problem that the anti-floating capacity of a traditional underground excavation station is insufficient due to shallow top soil covering is solved, and the technical short slab of the underground excavation assembly type station is made up.

2. The prefabricated member concrete has the advantages of controllable quality, batch production, uniform quality, high construction precision and short construction period, and can greatly shorten the construction period and reduce the construction safety risk of underground engineering.

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 description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a plan view of a subway station of the present invention;

FIG. 2 is a schematic cross-sectional view of a first split ring of the present invention at position B-B;

FIG. 3 is a schematic cross-sectional view of a second split ring of the present invention at C-C during a pushing construction phase;

FIG. 4 is a schematic cross-sectional view of a second split ring of the present invention at a C-C position after completion of a connecting channel construction;

FIG. 5 is a schematic cross-sectional view taken at location A-A of FIG. 3 during a pushing construction phase of the present invention;

FIG. 6 is a schematic cross-sectional view of the present invention after completion of the connecting passage construction;

FIG. 7 is a schematic horizontal section view of a side wall precast block D-D after the prestressed beam tensioning of the utility model is completed;

fig. 8 is an enlarged schematic view of the tenon structure at H in fig. 4.

The reference numerals are explained below:

1. a box body; 2. reinforcing the soil body; 3. uplift piles; 4. a first split ring; 5. a second split ring; 6. the sectional steel composite structure; 7. an end well; 8. a top plate precast block; 9. a bottom plate precast block; 10. a side wall precast block; 11. Middle plate precast blocks; 12. connecting the precast blocks; 13. a bracket precast block; 14. a corbel structure; 15. a station hall frame; 16. a platform frame; 17. a channel roof; 18. a channel middle plate; 19. a channel floor; 20. a channel side wall; 21. a limiting bulge; 22. a limiting groove; 23. a concavo-convex tenon structure; 24. pre-stressing tendons; 25. An anti-plucking region; 26. a spacer region.

Detailed Description

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings, which are based on the orientations and positional relationships indicated in the drawings, and are used for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The utility model will be further described with reference to the accompanying drawings in which:

example 1

As shown in fig. 1-8, an anti-floating structure of a pipe jacking method fabricated subway station comprises two second assemblies which are arranged oppositely, each second assembly is formed by splicing a plurality of second splicing rings 5, a fracture is formed in the same position of each second splicing ring 5, the fractures on the second splicing rings 5 are connected to form a connector on each second assembly, a reinforced soil body 2 is arranged between the two second assemblies, the positions of the connectors on the two second assemblies are opposite, a channel reinforced steel-concrete frame is fixedly arranged along the inner periphery of each connector, a connecting channel and an anti-pulling pile 3 are further arranged in the reinforced soil body 2, two ends of the connecting channel are respectively and fixedly connected with the channel reinforced steel-concrete frame, the anti-pulling pile 3 is arranged in the reinforced soil body 2 below the connecting channel, and the top of the anti-pulling pile 3 is fixedly connected with the bottom of the connecting channel.

As shown in fig. 3, the second splicing ring 5 is formed by enclosing a top plate precast block 8, a side wall precast block 10, a bottom plate precast block 9 and two connection precast blocks 12, the fracture is arranged between the two connection precast blocks 12, a bracket precast block 13 is arranged in the middle of the fracture and between the two connection precast blocks 12, the bracket precast block 13 divides the connection port into an upper part and a lower part, a bracket structure 14 is arranged on the side wall precast block 10, a middle plate precast block 11 is fixedly connected to the bracket structure 14, and the other end of the middle plate precast block 11 is connected with the bracket precast block 13.

As shown in fig. 4 and 6, the channel reinforcing steel reinforced concrete frame can be independently arranged above and/or below the bracket precast block 13 which divides the connecting port into two parts, so that the connecting port can be reinforced, the bracket precast block and the middle plate can be supported, and the whole body is more stable and firm.

Epoxy glue is paintd and adopts bolted connection in each prefabricated section seam crossing that surrounds into second concatenation ring 5, and the medium plate prefabricated section 11 that is located the inboard of second concatenation ring 5 adopts the crab-bolt to be connected fixedly with bracket structure 14 and bracket prefabricated section 13 to pour into the fine grain concrete in gap department, so set up the leakproofness that has improved the box, prevent that the condition of leaking from appearing in seam crossing.

As shown in fig. 4, the connecting channel comprises a channel top plate 17, a channel bottom plate 19 and a channel side wall 20, the channel bottom plate 19 is fixedly connected with the channel below the bracket precast block 13, the channel top plate 17 is fixedly connected with the channel above the bracket precast block 13, the channel side wall 20 is fixedly connected with the channel above and/or below the bracket precast block 13, the channel side wall can be communicated with the box body, and meanwhile, the anti-floating requirement can be effectively met by combining the anti-floating pile and the channel reinforcing steel-concrete frame at the bottom.

And a channel middle plate 18 is also arranged in the connecting channel, the channel middle plate 18 is fixedly connected with the channel side wall 20 and is positioned between the channel top plate 17 and the channel bottom plate 19, and thus the connection and the internal layering of the box body are completed.

The working process of the embodiment: firstly, constructing end wells 7 on the ground at two ends of a required construction position, vertically excavating the two end wells 7 to corresponding depths, measuring and setting out the two end wells 7 on the ground between the two end wells 7, then adopting an RJP ultrahigh pressure Jet grouting method (RJP (rodin Jet pipe) on the ground according to the marked positions after setting out, wherein the RJP method is a method of destroying the structure of a foundation by utilizing the kinetic energy of ultrahigh pressure Jet fluid, mixing and stirring the destroyed soil particles and hardened materials to form a large-diameter pile body) or adopting a horizontal MJS method (MJS all-round high pressure Jet method (Metro Jet System) in the two end wells 7, wherein the MJS method can carry out construction in horizontal, inclined and vertical directions and any angle, and construction is carried out by adopting a horizontal angle in the utility model) to reinforce the soil body between the two end wells 7, after reinforcement is finished, an uplift area 25 and a spacer area 26 are divided on a reinforced soil body 2, uplift pile 3 construction is carried out in the uplift area 25, the number of uplift piles 3 in the uplift area 25 is at least one, the length of the uplift pile 3 is determined by the structure of a subway station, precast blocks transported from a factory are assembled on the ground after the uplift pile 3 construction is finished, a top plate precast block 8, a bottom plate precast block 9 and two side wall precast blocks 10 are enclosed to form a first splicing ring 4, epoxy resin glue is coated at the joint of the top plate precast block 8, the bottom plate precast block 9 and the side wall precast blocks 10, then anchor bolts at two ends of a middle plate precast block 11 are fixed on bracket structures 14 of the two side wall precast blocks 10, fine concrete is poured at the joint, then limiting bulges 21 and limiting grooves 22 on the end faces of the assembled first splicing rings 4 are mutually matched to form a first component, then a top plate prefabricated block 8, a side wall prefabricated block 10, a bottom plate prefabricated block 9 and two connecting prefabricated blocks 12 are encircled to form a second splicing ring 5, epoxy resin glue is coated at the joint of the top plate prefabricated block 8, the bottom plate prefabricated block 9, the side wall prefabricated block 10 and the connecting prefabricated blocks 12, a tenon-and-mortise structure 23 is arranged between the prefabricated blocks of the first splicing ring and the second splicing ring and is sheared, each prefabrication is reinforced through bolt connection, then a section steel combined structure 6 is arranged in a fracture between the two connecting prefabricated blocks 12, a bracket prefabricated block 13 is fixed in the fracture of the second splicing ring 5 through the section steel combined structure 6, the section steel combined structure 6 can support the port between the two connecting prefabricated blocks 12, so that the second splicing ring 5 has higher pressure resistance and is convenient to meet the requirement of later construction, then one end of the middle plate prefabricated block 11 is connected with a bracket structure 14 on the side wall prefabricated block 10 in an anchoring way, the other end is connected with a bracket precast block 13 in an anchoring way, fine concrete is poured at the joint, a plurality of limit protrusions on the end surface of a second splicing ring 5 are mutually matched and connected into a second assembly by a limit groove 22, meanwhile, ports on the second splicing rings 5 are connected to form a connecting port on the second assembly, then a pipe jacking system is arranged in an end well 7 on one side, the first assembly and the splicing rings of the second assembly which are assembled on the ground are sequentially pushed into two sides of a reinforced soil body 2, a box body 1 is formed on two sides of the reinforced soil body 2, the positions of the connecting ports on the second assembly on the two sides of the reinforced soil body 2 are opposite during pushing, each second assembly on the box body after pushing is corresponding to a pulling-resistant area 25, the first assembly corresponds to a spacer area 26, then a beam 24 penetrates through one end of the box body 1 and penetrates through the first assembly and the second assembly which form the box body 1 in sequence, anchoring one end of a prestressed tendon 24 on the box body 1, tensioning and fixing the prestressed tendon 24 at the other end of the box body 1, tensioning all the prestressed tendons 24 in the box body 1, then respectively removing the section steel composite structures 6 in the connecting ports on the second assemblies, and pouring a channel reinforced steel-concrete frame on the inner periphery of the connecting port for supporting a template, wherein the connecting port on the second assembly is divided into two parts after the bracket precast blocks 13 in the fracture on the second splicing ring 5 are connected, and the channel reinforced steel-concrete frame can be independently arranged above and/or below the bracket precast blocks 13, as shown in figures 4 and 6, the channel reinforced steel-concrete frame which is independently arranged below the bracket precast blocks 13 is a platform frame 16 in a shape of a 'mouth', the bracket precast blocks 13 are arranged at the top of the platform frame 16, the channel reinforced steel-concrete frame which is independently arranged above the bracket precast blocks 13 is a station frame 15, the shape is 'Contraband' which rotates ninety degrees clockwise, and the reinforcing steel bars inside the platform frame 16 and the station hall frame 15 are connected with the reserved reinforcing steel bars on the connectors, so that the strength of the channel reinforced steel-concrete frame is ensured, then the reinforcing soil body 2 between the connectors on two adjacent second components is dug out, the uplift pile 3 is exposed, the pile head of the uplift pile 3 is chiseled out, the reinforcing steel bars inside the uplift pile 3 are exposed, then a template is supported between the two connectors, the reinforcing steel bars at the two ends of the connecting channel are connected with the reinforcing steel bars in the channel reinforced steel-concrete frame, the exposed inner reinforcing steel bars after the pile head of the uplift pile 3 is chiseled out are connected with the reinforcing steel bars at the bottom of the connecting channel, the pouring of the connecting channel is carried out after the connection is finished, then the construction of the connecting channel is carried out on the reinforcing soil body 2 between other connectors, and the two boxes at the two sides of the reinforcing soil body 2 are communicated through the connecting channel, and connecting channel still strengthens the structure that forms behind the steel-concrete frame connection through with anti-floating pile 3 and passageway and resists floating, makes the box of constituteing by a plurality of first subassemblies and second subassembly have stronger anti ability of floating, thereby prevents the box because the shallow problem that leads to the come-up of top earthing, has improved the security in subway station, has shortened the construction cycle in subway station.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the utility model. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.

Claims (7)

1. The utility model provides an anti structure that floats of push pipe method assembled subway station which characterized in that: comprises two oppositely arranged second assemblies which are spliced by a plurality of second splicing rings (5), fractures are arranged at the same positions on the second splicing rings (5), the fractures on the second splicing rings (5) are connected on the second component to form connecting ports, a reinforced soil body (2) is arranged between the two second assemblies, the positions of the connecting ports on the two second assemblies are opposite, a channel reinforced steel-concrete frame is fixedly arranged along the inner peripheries of the connecting ports, the reinforced soil body (2) is also provided with a connecting channel and an uplift pile (3), the two ends of the connecting channel are respectively fixedly connected with the channel reinforced steel-concrete frame, the uplift pile (3) is located in a reinforced soil body (2) below the connecting channel, and the top of the uplift pile (3) is fixedly connected with the bottom of the connecting channel.

2. The anti-floating structure of the pipe jacking method assembly type subway station as claimed in claim 1, wherein: second concatenation ring (5) are enclosed by a roof prefabricated section (8), a side wall prefabricated section (10), a bottom plate prefabricated section (9) and two and are connected prefabricated section (12) and close and form, and the fracture sets up two connect between prefabricated section (12), just be located two at the middle part of fracture and be provided with bracket prefabricated section (13) between connecting prefabricated section (12), bracket prefabricated section (13) will the connector partition is upper and lower two parts be provided with bracket structure (14) on side wall prefabricated section (10), fixedly connected with medium plate prefabricated section (11) on bracket structure (14), medium plate prefabricated section (11) other end with bracket prefabricated section (13) are connected.

3. The anti-floating structure of the pipe jacking method assembly type subway station as claimed in claim 2, wherein: the channel reinforcing steel-concrete frame can be independently arranged above and/or below the bracket precast block (13) dividing the connecting port into two parts.

4. The anti-floating structure of the pipe jacking method assembly type subway station as claimed in claim 3, wherein: the prefabricated blocks which surround the second splicing ring (5) are mutually matched through a concave-convex tenon structure (23).

5. The anti-floating structure of the pipe jacking method assembly type subway station as claimed in claim 3, wherein: epoxy resin glue is smeared at seams of all precast blocks which are encircled into the second splicing ring (5) and connected through bolts, a middle plate precast block (11) positioned on the inner side of the second splicing ring (5) is connected and fixed with the bracket structure (14) and the bracket precast block (13) through anchor bolts, and fine concrete is poured into the seams.

6. The anti-floating structure of the pipe jacking method assembly type subway station as claimed in claim 3, wherein: connecting channel includes passageway roof (17), passageway bottom plate (19) and passageway side wall (20), passageway bottom plate (19) with bracket prefabricated section (13) below reinforced concrete frame fixed connection is strengthened to the passageway, passageway roof (17) with bracket prefabricated section (13) top reinforced concrete frame fixed connection is strengthened to the passageway, passageway side wall (20) with equal fixed connection of reinforced concrete frame is strengthened to bracket prefabricated section (13) top and/or below to the passageway.

7. The anti-floating structure of the pipe jacking method assembly type subway station as claimed in claim 6, wherein: a channel middle plate (18) is further arranged in the connecting channel, the channel middle plate (18) is fixedly connected with the channel side walls (20) and is positioned between the channel top plate (17) and the channel bottom plate (19).

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