CN216406853U - Pipe jacking method assembled anti subway station that floats - Google Patents

Abstract

The utility model discloses a pipe jacking method assembled anti-floating subway station, which comprises a reinforced soil body and box bodies, wherein the box bodies are symmetrically arranged along the reinforced soil body, the box bodies are formed by alternately splicing a first assembly and a second assembly, a connecting port is arranged on the second assembly, a channel reinforced steel-concrete frame is fixedly arranged on the inner periphery of the inner edge connecting port, the positions of the connecting ports on the box bodies on two sides of the reinforced soil body are opposite, a connecting channel is also arranged between the two box bodies, two ends of the connecting channel are fixedly connected with the channel reinforced steel-concrete frame, an anti-floating pile is arranged in the reinforced soil body below the connecting channel, and the top of the anti-floating pile is fixedly connected with the bottom of the connecting channel. The pipe jacking method for the fabricated subway station does not need a traditional foundation pit support structure and support system, does not dig a road surface, does not seal traffic, does not migrate pipelines, has small occupied area, can meet the anti-floating requirement of the subway station in a water-rich soft soil area, makes up for a technical short plate of an underground-excavated fabricated station, and reduces the safety risk of underground engineering construction.

Description

Pipe jacking method assembled anti subway station that floats

Technical Field

The utility model belongs to the technical field of underground structures and construction, and particularly relates to a pipe jacking method fabricated anti-floating 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 adopting 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 covering soil at the top of the subway station is generally shallow, the underground excavation method station generally adopts the underground wall and the capping beam 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 station adopting the underground excavation method is higher at present, so that a pipe jacking method assembly type anti-floating subway station needs to be designed to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem of providing a pipe jacking method assembled anti-floating subway station, which adopts an underground excavation method to carry out underground space anti-floating construction.

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

the utility model provides a push pipe method assembled anti subway station that floats, includes and consolidates the soil body and box, the box is followed it sets up to consolidate the soil body symmetry, the box is formed by first subassembly and the alternative concatenation of second subassembly be provided with the connector on the second subassembly, interior edge the fixed channel that is provided with in connector interior week strengthens the steel-concrete frame, consolidate the soil body both sides the position of connector is relative on the box, two still be provided with interface channel between the box, interface channel's both ends with steel-concrete frame fixed connection is strengthened to the channel be provided with the uplift pile in the reinforcement soil body of interface channel below, the top of uplift pile with interface channel bottom fixed connection.

Preferably, the first assembly is formed by splicing a plurality of first splicing rings, the second assembly is formed by splicing a plurality of second splicing rings, a limiting protrusion is arranged on the end face of one side of each first splicing ring and one side of each second splicing ring, a limiting groove is arranged on the end face of the other side of each first splicing ring and the other side of each second splicing ring, the limiting protrusions and the limiting grooves are matched with each other, and a plurality of prestressed beams are arranged on the first assembly and the second assembly along the extending direction of the box body.

So set up, the construction degree of difficulty has been reduced in the pin-connected panel design, and the prestressing tendons can effectively accomplish the horizontal fixed to the box.

Preferably, first concatenation ring is enclosed to close by a roof prefabricated section, a bottom plate prefabricated section and two side wall prefabricated sections and forms, be provided with the bracket structure on the side wall prefabricated section it is provided with the medium plate prefabricated section through the bracket structure in the first concatenation ring.

Preferably, the second subassembly comprises a plurality of second concatenation ring concatenations, 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 and is connected the prefabricated section and form two be provided with the fracture between the connection prefabricated section, and is a plurality of fracture on the second concatenation ring links to each other and forms the connector on the second subassembly, just is located two at the middle part of fracture and is connected and be provided with the bracket prefabricated section between the 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, can reduce field work volume and construction complexity, improve efficiency of construction and engineering quality.

Preferably, the channel reinforcing steel-concrete frame is 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 connecting channel comprises a channel top plate, a channel bottom plate, a channel middle plate and a channel side wall, the channel bottom plate and the channel middle plate are all fixedly connected with the channel below the bracket precast block, the channel top plate and the bracket precast block are fixedly connected with the channel above the channel, and the channel side wall is fixedly connected with the bracket precast block and/or the channel above the channel.

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

So set up, improved the anti shear capacity between each prefabricated section, prevent that the concatenation ring is because of the too big incapability of pressure-bearing.

Preferably, epoxy resin glue is coated at seams of the precast blocks which are encircled into the first splicing ring and the second splicing ring and are connected through bolts, the middle plate precast blocks which are positioned at the inner sides of the first splicing ring and the second splicing ring are respectively connected and fixed through 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.

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-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.

2. The construction by the pipe jacking method does not need the traditional foundation pit support structure and support system, does not excavate the road surface, does not seal the traffic, does not migrate the pipeline, has small floor area and has small influence on the traffic.

3. And the prefabricated component concrete has controllable quality, batch production, uniform quality, high construction precision and short construction period, 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 "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to 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, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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, a pipe jacking method fabricated anti-floating subway station comprises a reinforced soil body 2 and a box body 1, wherein the box body 1 is symmetrically arranged along the reinforced soil body 2, the box body 1 is formed by alternately splicing a first component and a second component, a connector is arranged on the second component, a channel reinforced steel-concrete frame is fixedly arranged in the inner edge of the connector, the positions of the connectors on the box bodies 1 on two sides of the reinforced soil body 2 are opposite, a connecting channel is further arranged between the two box bodies 1, two ends of the connecting channel are fixedly connected with the channel reinforced steel-concrete frame, an anti-floating pile 3 is arranged in the reinforced soil body 2 below the connecting channel, and the top of the anti-floating pile 3 is fixedly connected with the bottom of the connecting channel.

As shown in fig. 2, 6, 7, the first subassembly is formed by the concatenation of a plurality of first concatenation rings 4, the second subassembly is formed by the concatenation of a plurality of second concatenation rings 5, be provided with spacing arch 21 on the terminal surface of first concatenation ring 4 and second concatenation ring 5 one side, be provided with spacing recess 22 on the terminal surface of opposite side, spacing arch 21 and spacing recess 22 mutually support, be provided with a plurality of prestressed tendons 24 along the extending direction of box 1 on first subassembly and second subassembly, it has reduced the construction degree of difficulty to set up the pin-connected panel design so, prestressed tendons 24 can effectively accomplish the horizontal fixation to box 1.

As shown in fig. 2 and 3, the first splicing ring 4 is enclosed by a top plate precast block 8, a bottom plate precast block 9 and two side wall precast blocks 10, a bracket structure 14 is arranged on the side wall precast block 10, a middle plate precast block 11 is arranged in the first splicing ring 4 through the bracket structure 14, the second assembly is formed by splicing a plurality of second splicing rings 5, the second splicing ring 5 is enclosed by a top plate precast block 8, a side wall precast block 10, a bottom plate precast block 9 and two connecting precast blocks 12, a fracture is arranged between the two connecting precast blocks 12, the fractures on the second splicing rings 5 are connected to form on the second assembly, a bracket precast block 13 is arranged in the middle of the fracture and between the two connecting precast blocks 12, the bracket precast block 13 divides the connecting port into an upper part and a lower part, the bracket structure 14 is arranged on the side wall precast block 10, fixedly connected with medium plate prefabricated section 11 on bracket structure 14, the 11 other end of medium plate prefabricated section is connected with bracket prefabricated section 13, so set up, can reduce field work volume and construction complexity, improves efficiency of construction and engineering quality.

As shown in fig. 6, the channel reinforcing steel-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 13 and the middle plate can be supported, and the whole body is more stable and firm.

As shown in fig. 4, the connecting channel includes a channel top plate 17, a channel bottom plate 19, a channel middle plate 18 and a channel side wall 20, the channel bottom plate 19 and the channel middle plate 18 are both fixedly connected with the channel reinforcing steel-concrete frame below the bracket precast block 13, the channel top plate 17 is fixedly connected with the channel reinforcing steel-concrete frame above the bracket precast block 13, the channel side wall 20 is fixedly connected with the channel reinforcing steel-concrete frame above and/or below the bracket precast block 13, so the communication of the box body 1 can be completed, and simultaneously, the anti-floating requirement can be effectively met by the combination of the anti-floating pile 3 at the bottom and the channel reinforcing steel-concrete frame.

As shown in figure 8, all the prefabricated blocks which are encircled to form the first splicing ring 4 and the second splicing ring 5 are mutually matched through the tenon-and-mortise structure 23, so that the shearing resistance between all the prefabricated blocks is improved, and the splicing rings are prevented from losing the capacity due to too large pressure bearing.

Epoxy glue is paintd and bolt connection is adopted to each prefabricated section seam crossing that the involution encloses into first concatenation ring 4 and second concatenation ring 5, and the medium plate prefabricated section 11 that is located first concatenation ring 4 and 5 inboards of second concatenation ring adopts the crab-bolt to connect fixedly respectively to pour into the fine grain concrete in seam crossing, so set up the leakproofness that has improved box 1, prevent that the condition of leaking from appearing in seam crossing.

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, then measuring and setting out the two end wells 7 on the ground between the two end wells 7, then adopting an RJP (Red Jet pile) high-pressure Jet grouting method on the ground according to the positions marked after setting out, wherein the RJP method is that the kinetic energy of ultrahigh-pressure Jet fluid is utilized to destroy the tissue of a foundation to form a structure, and then mixing and stirring the destroyed soil particles and hardening 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, the MJS method can carry out construction in horizontal, inclined, vertical and arbitrary directions, and construction is carried out at a horizontal angle) 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 present invention is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.

Claims (8)

1. The utility model provides an anti subway station that floats of push pipe method assembled which characterized in that: including consolidating soil body (2) and box (1), box (1) is followed consolidate soil body (2) symmetry sets up, box (1) is formed by first subassembly and the concatenation of second subassembly in turn be provided with the connector on the second subassembly, interior edge the fixed channel that is provided with in connector week strengthens the steel-concrete frame, consolidate soil body (2) both sides the position of connector is relative on box (1) still be provided with interface channel between box (1), interface channel's both ends with steel-concrete frame fixed connection is strengthened to the channel be provided with anti-floating pile (3) in the reinforcement soil body (2) of interface channel below, the top of anti-floating pile (3) with interface channel bottom fixed connection.

2. The pipe jacking method fabricated anti-floating subway station as claimed in claim 1, wherein: the first assembly is formed by splicing a plurality of first splicing rings (4), the second assembly is formed by splicing a plurality of second splicing rings (5), a limiting protrusion (21) is arranged on the end face of one side of each first splicing ring (4) and each second splicing ring (5), a limiting groove (22) is arranged on the end face of the other side of each first splicing ring, the limiting protrusion (21) is matched with the limiting groove (22), and a plurality of prestressed beams (24) are arranged on the first assembly and the second assembly along the extending direction of the box body (1).

3. The pipe jacking method fabricated anti-floating subway station as claimed in claim 2, wherein: first concatenation ring (4) are enclosed to close by a roof prefabricated section (8), a bottom plate prefabricated section (9) and two side wall prefabricated sections (10) and form, be provided with bracket structure (14) on side wall prefabricated section (10) be provided with medium plate prefabricated section (11) through bracket structure (14) in first concatenation ring (4).

4. The pipe jacking method fabricated anti-floating subway station as claimed in claim 2, 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 connection prefabricated sections (12) and close and form two be provided with the fracture between connection prefabricated section (12), and is a plurality of fracture on second concatenation ring (5) links to each other and forms the connector on the second subassembly, just is located two at the middle part of fracture and is connected and is provided with bracket prefabricated section (13) between prefabricated section (12), bracket prefabricated section (13) will the connector is separated for 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), the medium plate prefabricated section (11) other end with bracket prefabricated section (13) are connected.

5. The pipe jacking assembled anti-floating subway station as claimed in claim 4, wherein: the channel reinforcing steel-concrete frame can be independently arranged above and/or below the bracket precast block (13) which divides the connecting port into two parts.

6. The pipe jacking assembled anti-floating subway station as claimed in claim 5, wherein: connecting channel includes passageway roof (17), passageway bottom plate (19), passageway medium plate (18) and passageway side wall (20), passageway bottom plate (19) with passageway medium plate (18) all 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 bracket prefabricated section (13) top and/or below reinforced concrete frame equal fixed connection is strengthened to the passageway.

7. The pipe jacking method fabricated anti-floating subway station as claimed in claim 3 or 4, wherein: the prefabricated blocks which are encircled into the first splicing ring (4) and the second splicing ring (5) are mutually matched through a concave-convex tenon structure (23).

8. The pipe jacking assembled anti-floating subway station as claimed in claim 7, wherein: epoxy resin glue is smeared at joints of all precast blocks which are encircled into the first splicing ring (4) and the second splicing ring (5) and connected by bolts, middle plate precast blocks (11) positioned at the inner sides of the first splicing ring (4) and the second splicing ring (5) are respectively connected and fixed by anchor bolts, and fine concrete is poured into gaps.

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