CN217078843U - Multi-construction-method combined subway station construction structure - Google Patents

Abstract

The utility model discloses a many worker methods combination formula subway station construction structures, including the cast-in-place section of open cut, the lid is dug contrary section of doing and prefabricated assembly section, the cast-in-place section of open cut corresponds and sets up in the station both ends, the lid is dug contrary section of doing and is corresponding to set up in city backbone below, prefabricated assembly section distributes in all the other paragraphs of station major structure, prefabricated assembly section and the cast-in-place section of open cut or lid are dug contrary section of doing and adopt the post-cast ring beam to be connected, post-cast ring beam department realizes the sealed waterproof of seam through waterproof stagnant water structure, prefabricated assembly section, the cast-in-place section of open cut and lid are dug contrary one side of doing the section and being close to the post-cast ring beam all are provided with the connecting reinforcement that the anchor goes into in the corresponding post-cast ring beam, the connecting reinforcement that prefabricated assembly section corresponds is plugged into the ware anchor in the prefabricated intra-annular of relevant position through pre-buried reinforcing bar. The utility model discloses a reasonable segmentation has realized "open cut cast-in-place + prefabricated assembly + lid and has dug in coordination of contrary work" three kinds of different construction methods, has reduced the pressure to urban traffic for the construction progress has reduced construction cost.

Description

Multi-construction-method combined subway station construction structure

Technical Field

The utility model relates to a construction technical field is built to underground subway station, concretely relates to multiple working method combination formula subway station construction structures.

Background

With the technological progress and the blowout type development of urban rail transit in recent years, subways become transportation tools for people to travel more hot, the construction methods of the conventional subway stations are diversified, but each construction method has limitations, the open-cut cast-in-place construction method is mature, convenient to design, short in construction period, safe in construction, easy to control in quality and progress, large in construction occupied area and large in removal amount, and influences on long transit time; the cover-excavation reverse construction method has short influence time on urban traffic, but has high construction cost and longer total construction period; the prefabricated station does not need to be processed by reinforcing steel bars on site, and the concrete pouring construction site has low requirements, is green, environment-friendly and energy-saving, but the foundation pit of the station needs to be supported by an anchor rope and cannot be supported by steel, so that the requirement on the geology is high. When a subway station and a main urban trunk line are crossed, due to the characteristics of large removal amount, narrow site, strict control on construction noise and raised dust and the like of a construction site, the station construction by adopting a single construction method inevitably has the defects of high manufacturing cost, long construction period, difficult construction and the like, and therefore, how to reasonably adopt multiple construction methods to carry out cooperative operation becomes a technical problem which needs to be solved urgently.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a multiple construction method combination formula subway station construction structures to the technical problem of solution.

In order to achieve the technical purpose, the utility model adopts the following technical scheme:

a multi-construction method combined subway station construction structure comprises an open cut cast-in-place section, a cover cut reverse construction section and a prefabricated assembly section, wherein the open cut cast-in-place section is correspondingly arranged at two ends of a station, and the connecting positions of the station entrance and exit and the wind pavilion and the main structure of the station are all positioned in the open-cut cast-in-place section, the cover-cut reverse-acting section is correspondingly arranged below the urban main road, and the prefabricated assembling sections are distributed on the rest sections of the main structure of the station, the prefabricated assembling sections are connected with the open-cut cast-in-place section or the cover-cut reverse construction section by adopting post-cast ring beams, and the post-cast ring beam realizes the sealing and water-proofing of the joint through a waterproof and water-stopping structure, one sides of the prefabricated assembly section, the open-cut cast-in-place section and the cover-cut reverse construction section, which are close to the post-cast ring beam, are all provided with connecting steel bars anchored into the corresponding post-cast ring beam, and the connecting steel bars corresponding to the prefabricated assembly sections are anchored in the prefabricated rings at corresponding positions through the embedded steel bar connector.

Preferably, waterproof stagnant water structure is including burying the waterstop and the water swelling stagnant water glue of meeting water in the post-cast ring roof beam and wrapping up the waterproof layer in the post-cast ring roof beam outside buried underground, the post-cast ring roof beam is close to open cast-in-place section or the waterstop of lid excavation reverse-acting section one side and chooses the steel limit waterstop for use, and the waterstop of post-cast ring roof beam close to prefabricated assembly section one side chooses opposite sex steel limit waterstop or steel sheet putty waterstop for use, post-cast ring roof beam top waterproof layer includes the waterproof enhancement layer of coating that sets gradually from inside to outside, the coating waterproof layer, paper child linoleum isolation layer and pea gravel concrete protective layer, and post-cast ring roof beam bottom and side wall position waterproof layer include the butyl rubber coiled material additional layer that sets gradually from inside to outside, butyl rubber coiled material layer, micro-expansive concrete layer and concrete cushion.

Preferably, the water-swelling water-stop glue is arranged in a post-pouring ring beam on the water-stop belt upstream side, a grouting guide pipe used for pouring cement paste or epoxy resin is buried between the water-swelling water-stop glue and the water-stop belt, one end of the grouting guide pipe extends to the joint position of the post-pouring ring beam and the prefabricated assembly section, the other end of the grouting guide pipe extends to a cavity on the inner side of the main structure of the station, cement paste or epoxy resin is injected into a construction joint by the grouting guide pipe after the post-pouring ring beam is coagulated to reach the design strength, the construction joint internal crack is filled, and the waterproof effect is improved.

Preferably, a reaction frame ground beam is arranged below the rear pouring ring beam on the outer side of the first prefabricated ring on one side, far away from the open cut cast-in-place section, of the prefabricated assembly section, and a reaction frame used for tensioning construction of the prefabricated assembly section is arranged on the reaction frame ground beam.

Preferably, in order to simplify the construction process, the reaction frame adopts a scattered-point type reaction frame instead of an integral reaction frame welded by I-steel in the traditional process, the scattered-point type reaction frame comprises two types of anchoring type reaction frames and a switching type reaction frame, the bottom end of the anchoring type reaction frame is anchored on a reaction frame ground beam through anchor bars, the back side of the anchoring type reaction frame is attached to a bottom plate A block or a bottom angle plate B block of a first-width prefabricated ring and is in tie-connection fixing with a splicing block of the corresponding first-width prefabricated ring through prestressed threaded steel bars penetrating through anchor holes of the anchoring type reaction frame, the switching type reaction frame is correspondingly arranged at a splicing position between the bottom angle plate B block and a side plate C block of the first-width prefabricated ring or between the side plate C block and a top plate D block of the first-width prefabricated ring, the two back side ends of the switching type reaction frame are respectively attached to splicing blocks of the first-width prefabricated ring at two sides of the splicing, and the two ends of the splicing block of the first-width prefabricated ring at the corresponding position are in tie-connection fixing through prestressed threaded steel bars penetrating through anchor holes of the switching type reaction frame, and the adapting reaction frame is matched with the prestressed twisted steel to connect the two splicing blocks at the two sides of the splicing seam into a whole.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a reasonable segmentation has realized the cooperation of "open cut cast-in-place + prefabricated assembly + lid digs reverse work" three kinds of different construction methods, the shortcoming of each construction method has weakened ingeniously on the basis of keeping each construction method advantage, and through the post-cast ring roof beam that sets up between prefabricated section and the cast-in-place section with open cut cast-in-place section, prefabricated assembly section and lid digs reverse work section triplex, successfully solve the problem that the station construction field is narrow and small, occupy the trunk lane and influence urban traffic, the pressure to urban traffic has been reduced, the construction progress has been accelerated, construction cost is reduced, and the influence of construction noise and raise dust to the environment has been reduced, agree with green construction theory;

2. the utility model discloses optimize traditional integral stretch-draw reaction frame for scattered point formula stretch-draw reaction frame, reduced the construction material quantity, simplified the construction degree of difficulty to being close to open cut cast-in-place one side with the setting of reaction frame at first and moving to the opposite side, having avoided assembling from open cut cast-in-place section, assembling the problem that the platform truck can't dig contrary section of making and hang out after the completion in the lid.

Drawings

The above and/or other aspects and advantages of the present invention will become more apparent and more readily appreciated from the detailed description taken in conjunction with the following drawings, which are given by way of illustration only and not by way of limitation, wherein:

fig. 1 is a plan view of the present invention;

FIG. 2 is a schematic longitudinal sectional view of the present invention;

FIG. 3 is a schematic structural view of the connecting steel bars at the vault of the post-cast ring beam of the present invention;

FIG. 4 is a schematic structural view of the connecting steel bars at the side wall of the post-cast ring beam of the present invention;

FIG. 5 is a schematic structural view of the connecting steel bars at the bottom plate of the post-cast ring beam of the present invention;

FIG. 6 is a schematic structural view of the post-cast ring beam waterproof and water-stopping structure of the present invention;

FIG. 7 is a schematic structural view of the post-cast ring beam vault position waterproof and water-stop structure of the present invention;

FIG. 8 is a schematic structural view of the waterproof and water-stop structure at the bottom plate position of the post-cast ring beam of the present invention;

FIG. 9 is a schematic structural view of the anchoring reaction frame of the present invention;

fig. 10 is a schematic structural view of the adapting reaction frame of the present invention.

Reference numerals: 1-open cut cast-in-place section, 2-cover cut reverse construction section, 3-prefabricated assembly section, 4-post-cast ring beam, 5-connecting steel bar, 6-steel bar connector, 7-water stop band, 8-water swelling water stop glue, 9-waterproof layer, 10-grouting guide pipe, 11-reaction frame ground beam, 12-anchoring reaction frame, 13-switching reaction frame, 14-prestressed twisted steel bar, 15-prefabricated ring, 1501-bottom plate A block, 1502-bottom angle plate B block, 1503-side plate C block and 1504-top plate D block.

Detailed Description

Hereinafter, an embodiment of a multi-construction method combined type subway station construction structure of the present invention will be described with reference to the accompanying drawings. The embodiments described herein are specific embodiments of the present invention, and are intended to be illustrative of the concepts of the present invention, which are intended to be illustrative and exemplary, and should not be construed as limiting the scope of the embodiments of the present invention. In addition to the embodiments described herein, those skilled in the art will be able to employ other embodiments that are obvious based on the disclosure of the claims and the specification herein, including those that employ any obvious substitutions and modifications to the embodiments described herein.

In the description of the present invention, it should be noted that the terms "front", "back", "left", "right", "top", "bottom", "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

The drawings in the present specification are schematic views to assist in explaining the concept of the present invention, and schematically show the shapes of the respective portions and the mutual relationships thereof. It should be noted that for the sake of clarity in showing the structures of the various components of the embodiments of the present invention, the drawings are not drawn to the same scale. Like reference numerals are used to denote like parts.

The principles and features of the present invention are described below in conjunction with the following drawings, the illustrated embodiments are provided to explain the present invention and not to limit the scope of the invention. The preferred embodiments of the present invention will be described in further detail below with reference to fig. 1-10:

as shown in fig. 1-5, the utility model discloses preferred many worker methods combination formula subway station construction structures, include from little mileage pile number to big mileage pile number open cut cast-in-place section 1, prefabricated assembly section 3, lid dig contrary section 2 and open cut cast-in-place section 1 that sets gradually, open cut cast-in-place section 1 corresponds and sets up in the station both ends, and additional structures such as station access & exit and wind pavilion all are located both ends open cut cast-in-place section 1, lid is dug contrary section 2 and is set up in city main road below correspondingly, and prefabricated assembly section 3 distributes in all the other paragraphs of station main structure, prefabricated assembly section 3 and open cut cast-in-place section 1 or lid are dug and all adopt back to water ring beam 4 and connect between contrary section 2, and back to water ring beam 4 department and realize through waterproof sealing up water structure seam, one side that prefabricated assembly section 3, open cut section 1 and lid is dug contrary section 2 and is close to back to water ring beam 4 all is provided with the connection steel that anchor goes into in corresponding back ring beam 4 The connecting steel bars 5 corresponding to the prefabricated assembly sections 3 are anchored in the prefabricated rings 15 at corresponding positions through the embedded steel bar connectors 6, when the post-cast ring beam 4 is constructed, the prefabricated assembly sections 3 and the open-cut cast-in-place section 1, the prefabricated assembly sections 3 and the cover-cut reverse construction section 2 are anchored into the corresponding post-cast ring beam 4, and the length of the connecting steel bars 5 needs to meet the requirement of anchoring length;

as shown in figures 6-8, the waterproof and water-stop structure comprises a water stop belt 7 and a water swelling water stop glue 8 which are embedded in a post-cast ring beam 4 and a waterproof layer 9 which is wrapped on the outer side of the post-cast ring beam 4, the water stop belt 7 on one side of the post-cast ring beam 4, which is close to an open-cut cast-in-place section 1 or a cover-cut reverse-operation section 2, is a steel edge water stop belt, the water stop belt 7 on one side of the post-cast ring beam 4, which is close to a prefabricated assembly section 3, is a different steel edge water stop belt or a steel plate putty belt, the width of the post-cast ring beam 4 is about 1m, the top waterproof layer comprises a paint waterproof reinforced layer, a paint waterproof layer, a paper tire felt isolating layer and a 70 mm-thick fine concrete protective layer which are sequentially arranged from inside to outside, the bottom and side wall waterproof layer comprises a butyl rubber coiled material additional layer, a butyl rubber coiled material layer, a micro-swelling concrete cushion layer and a concrete cushion layer which are sequentially arranged from inside to outside, the open-cut and cast-in-place during waterproof construction, The cover-excavation reverse-working side is treated according to construction joints, steel-edge water stops are embedded, an opposite-nature steel-edge water stop or a steel plate putty water stop is arranged on the assembling side, an anchor bolt is adopted to fix the opposite-nature steel-edge water stop or the steel plate putty water stop on the precast block, the water-swelling water stop glue 8 is arranged in the post-pouring ring beam 4 on the water-facing side of the water stop 7, a grouting guide pipe 10 for pouring cement paste or epoxy resin is embedded between the water-swelling water stop glue 8 and the water stop 7, one end of the grouting guide pipe 10 extends to the joint position of the post-pouring ring beam 4 and the precast assembling section 3, the other end of the grouting guide pipe extends to the cavity inside the main structure of the station and is connected with grouting equipment, cement paste or epoxy resin is injected into construction joint gaps by the grouting guide pipe 10 after the position of the post-pouring ring beam 4 reaches the design strength, cracks in the construction joints are filled, and the waterproof effect is improved;

as shown in fig. 9-10, the prefabricated section 3 is installed from one side of the cover-cut reverse construction section 2, a reaction frame ground beam 11 is arranged below a post-cast ring beam 4 outside a first prefabricated ring 15 close to one side of the cover-cut reverse construction section 2, a reaction frame for tensioning construction of the prefabricated section 3 is arranged on the reaction frame ground beam 11, the reaction frame adopts a scattered-point reaction frame to replace an integral reaction frame welded by i-beams in the conventional process, the scattered-point reaction frame comprises an anchoring reaction frame 12 and an adapter reaction frame 13, the bottom end of the anchoring reaction frame 12 is anchored on the reaction frame ground beam 11 through an anchor bar, the adapter reaction frame 13 is attached to a bottom plate a block 1501 or a bottom angle plate B block 1502 of the first prefabricated ring 15 and is fixed with a corresponding block of the first prefabricated ring 15 through a prestressed threaded steel bar 14 penetrating through an anchor hole, and the adapter reaction frame 13 is correspondingly arranged on a bottom block B1502 and a side plate C block or a side plate 1503 of the first prefabricated ring 15 and is fixed with a corresponding side plate C block 1503 or C side plate 1503 The splicing seam position between the top plate D blocks 1504 is characterized in that the two back sides of the splicing seam position are respectively attached to splicing blocks of first prefabricated rings 15 on the two sides of the splicing seam, the two ends of the splicing seam position are fixed with the splicing blocks of the first prefabricated rings 15 in the corresponding positions through prestressed threaded steel bars 14 penetrating through anchor holes of the splicing seam position, a transfer type reaction frame 13 is matched with the prestressed threaded steel bars 14 to connect the two splicing blocks on the two sides of the splicing seam into a whole, a reaction frame ground beam 11 is constructed before the prefabricated assembly section 3 is assembled, the anchor bars of the anchor type reaction frames 12 are embedded into the reaction frame ground beam 11, the concrete embedding positions are measured and placed by a measurer according to the positions of corresponding tension holes in a bottom plate A block 1501 and a bottom angle plate B block 1502 of the first prefabricated rings 15, each anchor type reaction frame 12 is provided with a tension hole, three anchor type reaction frames 12 are arranged on the bottom plate A block 1501 and the bottom plate A block B blocks 1502 on the left side and the right side, and the prefabricated assembly section 3 after the reaction frame ground beam 11 reaches the designed strength, the bottom plate A block 1501 of the prefabricated assembly section 15 is hoisted, The bottom angle plate B block 1502 is hoisted in place and then penetrates through prestressed threaded steel bars 14 to be tensioned and locked with the anchoring type reaction frame 12 at the corresponding position, then the side plate C blocks 1503 on the left side and the right side are continuously hoisted, and the transfer type reaction frame 13 is installed between the side plate C blocks 1503 and the bottom angle plate B block 1502, firstly the two transfer type reaction frames 13 and the upper tensioning holes of the bottom angle plate B block 1502 are tensioned and locked, then the lower tensioning holes of the side plate C blocks 1503 on the two sides are penetrated through prestressed threaded steel bars 14 to be respectively locked with the two transfer type reaction frames 13, because the bottom angle plate B block 1502 is fixed, the bottom angle plate B block 1502 can be used as a force bearing end to provide tensioning reaction force for the side plate C blocks 1503, two side top plate D blocks 1504 are continuously assembled after tensioning is completed, the transfer type reaction frame 13 is installed between the side plate C blocks 1503 after assembly is completed, then the transfer type reaction frame 13 and the side plate C blocks 1503 are locked, and then the prestressed threaded steel bars 14 are installed in the tensioning holes on the two sides of the top plate D block 1504, the two-side-plate C block 1503 is fixed, so that the two-side-plate C block 1503 can be used as a bearing end to provide tensioning counterforce for the top plate D block 1504, the scattered-point counterforce frame cuts the original large integral counterforce frame into 13 small counterforce devices, the using amount of construction materials is reduced, the construction difficulty is simplified, the assembly construction is started at the side of the cover-excavation reverse-acting section for the first time, the assembly from the open-excavation cast-in-place section 1 is avoided, the problem that the assembly trolley cannot be lifted out of the cover-excavation reverse-acting section 2 after the assembly is completed is solved, during construction, the main structure of the section is not constructed when the main structure is left about 20m at the open-excavation cast-in-place section 1 at the side of the small milepost number, the assembly trolley is lifted out of the section when the construction of the prefabricated assembly section 3 is completed, and the main structure of the section is constructed after the assembly trolley is lifted out of the section.

The utility model discloses a concrete construction steps as follows:

the method comprises the following steps: carrying out foundation pit fender pile construction, carrying out pile head breaking construction after the construction is finished, and sequentially carrying out construction of a crown beam and a retaining wall;

step two: performing steel pipe column construction of the cover-excavation reverse construction section 2;

step three: excavating a foundation pit of the open-cut cast-in-place section 1, a foundation pit of the prefabricated assembly section 3 and a foundation pit of the top plate of the cover-cut reverse construction section 2, wherein the foundation pit of the open-cut cast-in-place section 1 adopts a steel support as an inner support, and the foundation pit of the prefabricated assembly section 3 adopts an anchor rope support;

step four: carrying out top plate construction on the covering and digging reverse construction section 2, and backfilling to recover traffic after the construction is finished;

step five: after the excavation of the foundation pit of the open cut cast-in-place section 1 is finished, constructing a main structure of the open cut cast-in-place section 1, reserving a main structure of about 20m on one side of a small mile pile number, not constructing a section to be assembled, and constructing the main structure of the section after an assembly trolley is hoisted out;

step six: carrying out earth excavation from two sides of the cover excavation reverse construction section 2, and constructing a main body structure of the cover excavation reverse construction section 2;

step seven: after the construction of the cover-excavation reverse construction section 2 is completed, the construction of a reaction frame ground beam 11 is carried out, and anchor bars of an anchoring type reaction frame 12 are embedded in the reaction frame ground beam 11;

step eight: assembling construction of a main structure of a station of the prefabricated assembly section 3 is carried out from one side of the cover excavation reverse construction section 2 to one side of the open excavation cast-in-place section 1;

step nine: dismantling a reaction frame after the construction of a main structure of a station of a prefabricated assembly section 3 is finished, then constructing a post-pouring ring beam 4, roughening concrete on an assembly side and a cast-in-place side, installing an opposite steel edge water stop or a steel plate putty water stop on the assembly side, fixing the assembly side on a prefabricated block by adopting an anchor bolt, arranging a grouting guide pipe 10, performing waterproof construction on the post-pouring ring beam 4, binding reinforcing steel bars after the waterproof construction is finished, reserving connecting reinforcing steel bars 5 (meeting the anchoring length) on the cast-in-place side, anchoring the connecting reinforcing steel bars into the post-pouring ring beam 4, pre-embedding a reinforcing steel bar connector 6 in the prefabricated block on the assembly side, exposing the end part of the reinforcing steel bar connector 6 reserved in the assembly side during roughening, screwing reinforcing steel bars into the reinforcing steel bar connector 6 before the binding of the post-pouring ring beam 4 (the reinforcing steel bars meet the anchoring length), pouring the post-pouring ring beam 4 for pouring for four times, and pouring micro-expansive concrete;

step ten: carrying out middle plate assembling construction;

step eleven: and backfilling the station, recovering road traffic and finishing station construction.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (5)

1. A multi-construction method combined subway station construction structure is characterized in that: the steel structure comprises an open cut cast-in-place section (1), a cover cut reverse-acting section (2) and a prefabricated assembly section (3), wherein the open cut cast-in-place section (1) is correspondingly arranged at two ends of a station, the connecting positions of an entrance and an exit of the station and a wind pavilion and a main structure of the station are respectively positioned in the open cut cast-in-place section (1), the cover cut reverse-acting section (2) is correspondingly arranged below a main trunk road of a city, the prefabricated assembly section (3) is distributed in the rest sections of the main structure of the station, the prefabricated assembly section (3) is connected with the open cut cast-in-place section (1) or the cover cut reverse-acting section (2) through a rear pouring ring beam (4), the rear pouring ring beam (4) is sealed and waterproof through a waterproof water stop structure, one side of the prefabricated assembly section (3), one side of the open cut cast-in-place section (1) and one side of the cover cut reverse-acting section (2) close to the rear pouring ring beam (4) are respectively provided with a connecting reinforcing steel bar (5) anchored into the corresponding rear pouring ring beam (4), and the connecting steel bars (5) corresponding to the prefabricated assembly sections (3) are anchored in the prefabricated rings (15) at corresponding positions through the embedded steel bar connectors (6).

2. The multi-construction method combined type subway station construction structure as claimed in claim 1, wherein: the waterproof and water-stop structure comprises a water stop belt (7) and a water swelling and water stopping adhesive (8) which are embedded in the post-pouring ring beam (4), and a waterproof layer (9) wrapped on the outer side of the post-pouring ring beam (4).

3. The multi-construction method combined type subway station construction structure as claimed in claim 2, wherein: water-swelling stagnant water glue (8) set up in post-cast ring roof beam (4) of waterstop (7) upstream face one side, and bury underground between water-swelling stagnant water glue (8) and waterstop (7) and be used for pouring into grout or epoxy's slip casting pipe (10), slip casting pipe (10) one end extends to the seam position of post-cast ring roof beam (4) and prefabricated assembly section (3), and the other end extends to in the inboard cavity of station major structure.

4. The multi-construction method combined type subway station construction structure as claimed in claim 1, wherein: the prefabricated assembly section (3) is far away from the first prefabricated ring (15) outside post-cast ring beam (4) on one side of the open-cut cast-in-place section (1), and a reaction frame ground beam (11) is arranged below the first prefabricated ring (15), and a reaction frame used for tensioning construction of the prefabricated assembly section (3) is arranged on the reaction frame ground beam (11).

5. The multi-construction method combined type subway station construction structure as claimed in claim 4, wherein: the reaction frame comprises an anchoring type reaction frame (12) and a switching type reaction frame (13), the bottom end of the anchoring type reaction frame (12) is anchored on a reaction frame ground beam (11) through an anchor bar, the back side of the anchoring type reaction frame is attached to a bottom plate A block (1501) or a bottom angle plate B block (1502) of a first prefabricated ring (15) and is fixed with an assembling block of the corresponding first prefabricated ring (15) in a pulling mode through a prestress thread steel bar (14) penetrating through an anchor hole of the anchoring type reaction frame, the switching type reaction frame (13) is correspondingly arranged at a splicing position between the bottom angle plate B block (1502) and a side plate C block (1503) or between the side plate C block (1503) and a top plate D block (1504) of the first prefabricated ring (15) on the two sides of a splicing seam, the two back side ends of the switching type reaction frame are respectively attached to the assembling block of the first prefabricated ring (15) on the two sides of the splicing seam, and the two ends of the switching type reaction frame are fixed with the assembling block of the first prefabricated ring (15) at the corresponding position in a pulling mode through the prestress thread steel bar (14) penetrating through the anchor hole of the splicing ring, and the switching reaction frame (13) is matched with the prestressed threaded steel bar (14) to connect the two splicing blocks at the two sides of the splicing seam into a whole.

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