CN212561128U - Pier is assembled to grout bellows tied in a bundle that links to each other with prefabricated cushion cap - Google Patents

Abstract

The utility model provides a pile assembly pier of grouting corrugated pipe tied in a bundle connected with a prefabricated bearing platform, which comprises a foundation, pier stud segments and a top cap segment, wherein the foundation is connected by the foundation prefabricated segments through a foundation connecting seam; connecting the top cap connecting section with the top cap segment through a top cap splicing seam, and welding the connecting steel plates to each other; and (3) penetrating the steel strands through the pre-embedded corrugated pipes pre-embedded on each section, adopting U-shaped arrangement, tensioning the steel strands at the top of the top cap, constructing a foundation joint, and pouring concrete to complete assembly. The assembled pier connecting steel bar cluster arrangement has the advantages of large construction tolerance, low construction precision requirement, small assembling difficulty, high grouting efficiency, quick assembling among top cap segments, convenience and quickness in prestress installation and low cost.

Description

Pier is assembled to grout bellows tied in a bundle that links to each other with prefabricated cushion cap

Technical Field

The utility model belongs to bridge structures building field especially relates to a pier is assembled to grout bellows tied in a bundle that links to each other with prefabricated cushion cap.

Background

The construction of the prefabricated assembled pier is an important part for promoting the industrialized development of bridge engineering, and has the advantages of small construction interference, high construction speed, good engineering quality, labor cost saving and the like. In recent years, in the field of domestic municipal engineering and highway engineering, a frame pier is composed of a pier stud and a top cap, the prefabricated pier stud and a foundation and the prefabricated top cap and the prefabricated pier stud are assembled to form the frame pier, the frame pier is commonly used for crossing over construction points such as road interchange, and a joint connection mode is usually adopted by adopting sleeve grouting connection or corrugated pipe connection.

The sleeve grouting or corrugated pipe connection needs to reserve steel bar joints in the prefabricated sections and then connect the steel bars one by one. The grouting sleeve has the advantages that the grouting sleeve connecting steel bars of the sleeve can be extended into the sleeve for a certain length to ensure the connection safety of the joint, the length of the sleeve is increased when the safety of the joint is improved, the cost of the grouting sleeve is high at present, and the cost can be obviously increased when the construction cost is continuously increased; the sleeve grouting or corrugated pipe connection has high requirements on construction precision, and the allowable deviation of the length and the position of the steel bar joint is small; during construction, the steel bar joints are required to be inserted into the sleeves or the corrugated pipes one by one, and particularly, the steel bar joints between the top caps and the pier columns are more, so that the construction alignment difficulty is higher; after the connection of the steel bars is finished, grouting operation is required to be performed one by one, and the number of working procedures is large; the grouting sleeve has high cost and is not beneficial to the application and popularization of engineering scale. Meanwhile, when the frame pier adopts a plurality of small sections, a plurality of splicing seams exist, and the connection and installation among the small sections directly influence the splicing efficiency and quality of the whole structure; when the frame piers need to be connected in a prestressed mode, installation is difficult due to the adoption of steel strands or thick steel bars.

Aiming at the defects of the existing connection mode, the research and development of the cluster grouting corrugated pipe assembling pier connected with the prefabricated bearing platform is an urgent problem to be solved.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a pier is assembled to grout bellows tied in a bundle that links to each other with prefabricated cushion cap, this pier construction tolerance is big, the construction required precision is low, construction speed is fast.

In order to solve the technical problem, the utility model discloses a technical scheme is:

a cluster grouting corrugated pipe assembled pier connected with a prefabricated bearing platform comprises a foundation, pier stud sections and a top cap, wherein the top cap comprises a top cap connecting section and two top cap sections, top cap connecting keys are arranged on the end surfaces of the top cap sections, a first embedded steel plate is embedded in the outer sides of the top cap connecting keys, top cap connecting grooves are arranged on the end surfaces of the two sides of the top cap connecting section, the top cap connecting grooves are matched with the top cap connecting keys, second embedded steel plates are embedded in the two sides of the top cap connecting section, the top cap connecting section is connected with the top cap sections through top cap splicing seams, and then the first embedded steel plate and the second embedded steel plates are welded with each other; the foundation is formed by connecting two foundation prefabricated sections through a foundation connecting seam, connecting steel bars or bundling connecting corrugated pipes are pre-embedded in the foundation prefabricated sections, connecting steel bars are pre-embedded in one end of each pier stud section, bundling connecting corrugated pipes are pre-embedded in the other end of each pier stud section, bundling connecting corrugated pipes or connecting steel bars are pre-embedded in the top cap section, and the bundling connecting corrugated pipes correspond to the connecting steel bars one by one; penetrating the embedded connecting steel bars into the cluster connecting corrugated pipes, then pouring high-strength grouting materials, penetrating steel strands into the embedded corrugated pipes embedded in the top cap sections, the pier stud sections and the foundation prefabricated sections, tensioning the steel strands at the tops of the top cap sections, then constructing foundation connecting joints, pouring concrete into the two foundation prefabricated sections, and completing the assembly of the pier.

Further, the prefabricated section of basis is the prefabricated hollow square box in the mill, and box one side is the opening, and two prefabricated section box openings of basis set up relatively the prefabricated section box open-ended terminal surface of basis is equipped with the embedded bar, the embedded bar stretches out the certain length of terminal surface, and the embedded bar passes through basic connecting reinforcement interconnect, the basic joint line is pour between the prefabricated section box opening of basis, realizes the connection between the embedded bar. Be equipped with pile foundation preformed hole on the bottom plate of the prefabricated section of basis, the size is bigger than pile foundation and pile foundation reinforcing bar, during the construction with pile foundation and pile foundation reinforcing bar insert pile foundation preformed hole, pours back concreting, and the pile foundation reinforcing bar is lived in the anchor, realizes being connected between basis and the pile foundation.

Furthermore, the connecting steel bars are embedded in the foundation and the pier stud segments, extend out of the top surfaces of the foundation and the pier stud segments by a certain length, are composed of three or more common steel bars and are arranged in a circular or rectangular mode, and the steel bars are arranged in a bundle, so that the number of the connecting steel bars is reduced on the premise of not reducing the number of the steel bars, and connection and grouting construction of the steel bars among the segments are facilitated. The stirrups are bound on the common steel bars, so that the integrity of the connecting steel bars is improved, the connecting steel bars extending out of the top surface have certain rigidity, and the connecting steel bars are ensured to be vertical.

Furthermore, the cluster connecting corrugated pipe is pre-embedded on the bottom surfaces of the pier stud segment and the top cap segment, corresponds to the connecting steel bars one by one, is circular or rectangular, is 3-5cm larger than one side of the connecting steel bars in size, is about 2cm longer than the connecting steel bars in length, is convenient for the connecting steel bars to be inserted, and is provided with grouting holes. The cluster connecting corrugated pipe is pre-buried at the inner side of the pier column reinforcing steel bar, is arranged along the periphery of the pier column section and is connected with the pier column reinforcing steel bar.

Furthermore, spiral ribs are arranged around the bundling connection corrugated pipe and adopt a spiral arrangement mode, and when the connection reinforcing steel bars are pulled, the effect of restraining the high-strength grouting material in the bundling connection corrugated pipe can be achieved, and the anchoring safety is improved. And connected reinforcing steel bars are arranged around the spiral ribs of the cluster connecting corrugated pipe, are connected with the spiral ribs and extend into the pier column section and the top cap section for a certain length to play roles in anchoring and stress dispersion.

Furthermore, the connecting steel bars are embedded in the top cap section and the pier stud section and extend out of the bottom surfaces of the top cap section and the pier stud section by a certain length, the cluster connecting corrugated pipes are embedded in the top surfaces of the pier stud section and the foundation and correspond to the connecting steel bars one by one, and the connecting steel bars are inserted into the cluster connecting corrugated pipes for connection; the connected reinforcing steel bars on the cluster connecting corrugated pipe extend upwards, so that the connecting reinforcing steel bars pre-embedded above the sections are inserted into the connecting corrugated pipe, and the connecting corrugated pipe and the sections are connected in an overlapping mode for a certain length, so that the connecting strength is further improved.

Further, the hood connecting key adopts protruding type structure, pre-buried steel sheet adopts annular steel sheet, and outline and hood festival section terminal surface parallel and level are anchored on the hood festival section through anchor bar one, the hood spread groove adopts the spill structure, pre-buried steel sheet two adopts annular steel sheet, arranges around the hood festival section terminal surface, through anchor bar two anchors on the hood linkage section, and pre-buried steel sheet both ends stretch out certain length of hood linkage section, will adopt the fillet weld to be connected between pre-buried steel sheet two and the pre-buried steel sheet one to realize being connected between hood linkage section and hood festival section.

Furthermore, pre-buried bellows is pre-buried in hood festival section, pier stud festival section, the prefabricated festival section relevant position of basis to adopt the U type to arrange, treat each intersegmental assembly and accomplish the back, penetrate pre-buried bellows with steel strand wires from top to bottom in, arrange steel strand wires again according to the U type, penetrate corresponding pre-buried bellows from bottom to top in, set up steel strand wires anchor end above the hood festival section, stretch-draw steel strand wires, the construction foundation back is irritated concrete.

Furthermore, the foundation and the pier column sections, the adjacent pier column sections and the top cap sections are connected through splicing seams, and the splicing seams are made of high-strength mortar or ultrahigh-performance concrete. The top cap splicing seam is connected with the top cap section and the top cap connecting section and adopts epoxy resin glue.

Furthermore, the high-strength grouting material is filled in the bundling connection corrugated pipe, after the connecting steel bars are inserted into the bundling connection corrugated pipe, the high-strength grouting material is filled through the grouting holes and filled when the slurry flows out, the high-strength grouting material adopts grouting material or ultrahigh-performance concrete to anchor and bond the bundling steel bars, and the steel bar bundling grouting connection is formed.

Compared with the prior art, the pier is assembled to grout bellows tied in a bundle that links to each other with prefabricated cushion cap has following advantage:

1. by adopting the connection steel bar cluster arrangement, a larger gap is reserved between the cluster connection corrugated pipe and the connection steel bars, the construction tolerance is large, and the construction precision requirement is low; the number of the connecting reinforcing steel bars in a cluster is small, construction alignment and penetration of the reserved corrugated pipe are facilitated, and assembling construction difficulty is small.

2. The length of the connecting steel bar joint inserted into the cluster connecting corrugated pipe is long, and the steel bar connection and anchoring safety is high; the bundled steel bars reduce the number of the embedded bundled connecting corrugated pipes under the condition of not reducing the steel bar containing rate, and the grouting efficiency and the construction speed are high.

3. The top cap segments are assembled quickly, the top cap is suitable for assembling a plurality of small segments of the pier stud and the top cap, and the single segment is small in weight and size and convenient to transport and hoist.

4. When the sections are connected through prestress, the sections are connected through prestress steel strands, the connection efficiency is high, and the problem that the prestressed reinforcement U-shaped arrangement is inconvenient to penetrate through is solved by reserving a tensioning space in the foundation.

5. The joint connection cost is low, thereby reducing the manufacturing cost of the prefabricated assembled pier and being beneficial to popularization.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

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

fig. 2 is a top view of the present invention;

FIG. 3 is a schematic diagram of the basic structure of the present invention, wherein 3-a is a front view and 3-b is a cross-sectional view taken along line I-I of 3-a;

fig. 4 is a schematic view of a section of a pier stud of the present invention;

FIG. 5 is a schematic view of the middle top cap of the present invention;

FIG. 6 is a schematic view of a middle overcap section of the present invention, wherein 6-a is a front view and 6-b is a cross-sectional view III-III of 6-a;

FIG. 7 is a schematic view of the connection section of the middle top cap of the present invention, wherein 7-a is a front view, and 7-b is a sectional view of II-II of 7-a;

FIG. 8 is a prestressed connection diagram of the assembled pier of the grouting corrugated pipe cluster connected to the prefabricated bearing platform of the present invention;

FIG. 9 is a schematic side view of the prestressed connection of the assembled pier of the grouting corrugated pipe cluster connected to the prefabricated bearing platform of the present invention;

FIG. 10 is a front view of a base preform segment 10-a and a side view of a base preform segment 10-b;

fig. 11 is a schematic view of an embodiment of the second cluster grouting corrugated pipe assembly pier connected with the prefabricated bearing platform.

Description of reference numerals:

1 basis 101 basis prefabricated section 102 embedded bar 103 basis connecting reinforcement of reinforcing bar

106 pile foundation preformed holes filled with concrete after 104 foundation connecting joints 105

107 pile foundation 108 pile foundation steel bar

2 splice joint 3 pier stud segment

4 top cap segment 401 top cap connecting key 402 pre-embedded steel plate one 403 anchor bar one

5 top cap connecting section 501 top cap connecting groove 502 pre-embedded steel plate two 503 anchor bar two

6 bunched connecting corrugated pipe 601 spiral rib 602 connected steel bar

7 connecting steel bar 701 stirrup

8 high-strength grouting material 9 top cap splicing joint 10 grouting hole 11 pier stud steel bar

12 pre-buried corrugated pipe 13 steel strand 14 steel strand anchoring end

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

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 the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, 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 is to 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 present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1-5, the cluster grouting corrugated pipe assembled pier connected with a prefabricated bearing platform comprises a foundation 1, a plurality of pier stud sections 3 and a top cap, wherein the top cap comprises a top cap connecting section 5 and two top cap sections 4, a top cap connecting key 401 is arranged on the end surface of each top cap section 4, a first embedded steel plate 402 is embedded outside the top cap connecting key 401, top cap connecting grooves 501 are arranged on the end surfaces of two sides of the top cap connecting section 5, the top cap connecting grooves 501 are matched with the top cap connecting keys 401, second embedded steel plates 502 are embedded on two sides of the top cap connecting section 5, the top cap connecting section 5 is connected with the top cap sections 4 through top cap splicing seams 9, and then the first embedded steel plate 402 and the second embedded steel plates 502 are welded with each other; the foundation 1 is formed by connecting two foundation prefabricated sections 101 through foundation connecting seams 104, connecting steel bars 7 are embedded in the top surfaces of the foundation prefabricated sections 101 and the pier stud sections 3, cluster connecting corrugated pipes 6 are embedded in the bottom surfaces of the pier stud sections 3 and the top cap sections 4, and the cluster connecting corrugated pipes 6 correspond to the connecting steel bars 7 one by one; penetrating the embedded connecting steel bars 7 into the cluster connecting corrugated pipes 6, then pouring high-strength grouting material 8, penetrating the steel strands 13 into the embedded corrugated pipes 12 embedded in the top cap sections 4, the pier stud sections 3 and the foundation prefabricated sections 101, tensioning the steel strands 13 at the tops of the top cap sections 4, then constructing foundation connecting joints 104, pouring concrete 105 into the two foundation prefabricated sections 101, and finishing the assembly of the pier.

The foundation 1 is connected with the pier column sections 3, the adjacent pier column sections 3 and the top cap sections 4 through the splicing seams 2, and the splicing seams 2 are made of high-strength mortar or ultrahigh-performance concrete.

As shown in fig. 10, the prefabricated foundation sections 101 are hollow square boxes prefabricated in a factory, one side of each box is an opening, the openings of the two prefabricated foundation sections 101 are arranged oppositely, embedded steel bars 102 are arranged on the end faces of the openings of the box of the prefabricated foundation sections 101, the embedded steel bars 102 extend out of the end faces by a certain length, the embedded steel bars 102 are connected with each other through foundation connecting steel bars 103, and the foundation connecting joints 104 are poured between the openings of the box of the prefabricated foundation sections 101 to realize the connection between the embedded steel bars 102. Be equipped with pile foundation preformed hole 106 on the bottom plate of prefabricated section 101 of basis, the size is bigger than pile foundation 107 and pile foundation reinforcing bar 108, during the construction with pile foundation 107 and pile foundation reinforcing bar 108 insert pile foundation preformed hole 106, pours back concreting 105 again, anchors pile foundation reinforcing bar 108, realizes being connected between basis 1 and the pile foundation 107.

When the pre-embedded steel strand is adopted for prestress when the assembled pier needs to be provided, the steel strand is difficult to ensure to be vertical due to small rigidity, so that the pre-embedded hole channel in the segment is difficult to penetrate; when adopting the coarse steel bar, the coarse steel bar intensity is less, need set up a plurality ofly, brings inconvenience for the construction, provides the operation space for the steel strand wires through adopting hollow box, wears to restraint with steel strand wires 13 in the cavity of prefabricated segment 101 of basis, solves the inconvenient problem of wearing to restraint of steel strand wires 13U type arrangement, treats that steel strand wires 13 stretch-draw accomplishes the back, pours into concrete 105 to two prefabricated segments 101 of basis back pouring again.

Connecting reinforcement 7 is pre-buried in basis 1 and pier stud festival section 3 to stretch out basis 1 and pier stud festival section 3's top surface certain length, constitute by three and above ordinary reinforcing bars, arrange according to circular or rectangle, adopt reinforcing bar to gather a bundle to arrange, reduced connecting reinforcement 7's number under the prerequisite that does not reduce the reinforcing bar radical, be convenient for the connection and the grout construction of intersegment reinforcing bar. The stirrups 701 are bound on the common steel bars, so that the integrity of the connecting steel bars is improved, the connecting steel bars extending out of the top surface have certain rigidity, and the connecting steel bars are ensured to be vertical.

The cluster connecting corrugated pipe 6 is pre-buried on the bottom surfaces of the pier stud section 3 and the top cap section 4, corresponds to the connecting steel bars 7 one by one, is circular or rectangular, is 3-5cm larger than one side of the connecting steel bars 7 in size, is about 2cm longer than the connecting steel bars 7 in length, is convenient for the connecting steel bars 7 to be inserted, and is provided with grouting holes 10. The cluster connecting corrugated pipe 6 is pre-buried inside the pier stud reinforcing steel bars 11, is arranged along the periphery of the pier stud section 3, and is connected with the pier stud reinforcing steel bars 11.

The spiral ribs 601 are arranged around the cluster connecting corrugated pipe 6, the spiral ribs 601 are arranged in a spiral mode, when the connecting reinforcing steel bars 7 are pulled, the effect of restraining the high-strength grouting material 8 in the cluster connecting corrugated pipe 6 can be achieved, and anchoring safety is improved. Connected steel bars 602 are arranged around the spiral bars 601 of the cluster connecting corrugated pipe 6, and the connected steel bars 602 are connected with the spiral bars 601 and extend into the pier stud sections 3 and the top cap sections 4 for a certain length to play roles of anchoring and stress dispersion.

As shown in fig. 6-7, the hood connecting key 401 adopts a convex structure, the first embedded steel plate 402 adopts an annular steel plate, the outer contour is flush with the end surface of the 4 hood sections, the first anchor bar 403 is anchored on the 4 hood sections, the hood connecting groove 501 adopts a concave structure, the second embedded steel plate 502 adopts an annular steel plate, the annular steel plate is arranged around the end surface of the 5 hood sections, the second anchor bar 503 is anchored on the 5 hood sections, the end part of the second embedded steel plate 502 extends out of the 5 hood sections for a certain length, and the second embedded steel plate 502 is connected with the first embedded steel plate 402 by an angle welding joint, so that the connection between the 5 hood sections and the 4 hood sections is realized. The top cap splicing seam 9 is connected with the top cap segment 4 and the top cap connecting segment 5 and adopts epoxy resin glue.

As shown in fig. 8-9, the embedded corrugated pipes 12 are embedded in the corresponding positions of the top cap section 4, the pier stud section 3 and the foundation prefabricated section 101, and are arranged in a U shape, after the assembly among the sections is completed, the steel strands 13 penetrate into the embedded corrugated pipes 12 from top to bottom, then the steel strands 13 are arranged in the U shape and penetrate into the corresponding embedded corrugated pipes 12 from bottom to top, the steel strand anchoring ends 14 are arranged above the top cap section 4, the steel strands 13 are tensioned, and concrete 105 is poured after the foundation is constructed.

The high-strength grouting material 8 is poured into the cluster connecting corrugated pipe 6, after the connecting steel bars 7 are inserted into the cluster connecting corrugated pipe 6, the high-strength grouting material 8 is poured through the grouting holes 10 and poured out of slurry, and the high-strength grouting material 8 adopts grouting material or ultrahigh-performance concrete to anchor and bond the cluster steel bars to form the steel bar cluster grouting connection. When the connecting reinforcing steel bars 7 are stressed, the tensile force of the connecting reinforcing steel bars 7 is transmitted to the high-strength grouting material 8 through the bond stress, the cluster connecting corrugated pipe 6 restrains the deformation of the high-strength grouting material 8, the high-strength grouting material 8 transmits the tensile force to the cluster connecting corrugated pipe 6 through the friction force and the constraint force of the spiral ribs 601, the cluster connecting corrugated pipe 6 transmits a part of the tensile force to the outside concrete through the wave ribs on the corrugated pipe, and transmits a part of the tensile force to the connected reinforcing steel bars 602 through the spiral ribs 601, so that the reliable connection between the connecting reinforcing steel bars 7 and the connected reinforcing steel bars 602 is realized.

As shown in fig. 11, another embodiment of the bundled grouting corrugated pipe assembly pier connected with the prefabricated bearing platform is as follows: the connecting steel bars 7 are embedded in the top cap sections 4 and the pier stud sections 3 and extend out of the bottom surfaces of the top cap sections 4 and the pier stud sections 3 for a certain length, the cluster connecting corrugated pipes 6 are embedded in the top surfaces of the pier stud sections 3 and the foundation 1 and correspond to the connecting steel bars 7 one by one, and the connecting steel bars 7 are inserted into the cluster connecting corrugated pipes 6 for connection; the connected reinforcing steel bars 602 on the cluster connecting corrugated pipe 6 extend upwards, so that the connecting reinforcing steel bars 7 pre-embedded above the sections are inserted into the connecting corrugated pipe, and the connecting corrugated pipe and the sections are lapped for a certain length to form connection between the connecting corrugated pipe and the sections, and the connection strength is further increased.

The construction method of the cluster grouting corrugated pipe assembled pier connected with the prefabricated bearing platform comprises the following steps:

the method comprises the following steps: prefabricating the foundation prefabricated section 101, the pier stud section 3 and the top cap section 4 in factories to be finished and waiting for installation;

step two: constructing a foundation prefabricated section 101, and connecting embedded steel bars 102 through foundation connecting steel bars 103;

step three: hoisting pier stud segments 3, constructing splicing seams 2, and penetrating embedded connecting steel bars 7 into bundling connecting corrugated pipes 6; hoisting one side top cap segment 4, constructing a splicing seam 2, and penetrating embedded connecting steel bars 7 into a bundling connecting corrugated pipe 6;

step four: hoisting the top cap connecting section 5, connecting the top cap connecting section with the top cap segment 4 through a top cap splicing seam 9, and welding the second embedded steel plate 502 with the first embedded steel plate 402; hoisting the top cap segment 5 on the other side, constructing a splicing seam 2, penetrating the embedded connecting steel bars 7 into the bundling connecting corrugated pipe 6, and splicing the embedded connecting steel bars and the top cap connecting segment 5 in the same way;

step five: pouring high-strength grouting material 8 into the bundling connection corrugated pipe 6 to realize connection between the reinforcing steel bars;

step six: and (3) penetrating the steel strand 13 through the embedded corrugated pipe 12 embedded on the top cap section 4, the pier stud section 3 and the foundation prefabricated section 101, penetrating back to the top of the top cap section 4 according to U-shaped arrangement, tensioning the steel strand at the top of the top cap section 4, constructing a foundation joint 104, pouring concrete 105, and completing the assembly of the pier.

According to the technical scheme, the cluster grouting corrugated pipe connected with the prefabricated bearing platform is connected between the prefabricated pier column and the prefabricated foundation in the pier and between the prefabricated top cap and the prefabricated pier column through steel bar cluster grouting, connecting steel bars are arranged in a cluster, a large gap is reserved between the cluster connecting corrugated pipe and the connecting steel bars, the construction tolerance is large, and the construction precision requirement is low. The number of the bundling connecting steel bars is small, so that the construction alignment and the penetration of the reserved corrugated pipe are facilitated, and the assembling construction difficulty is small; the length of the connecting steel bar joint inserted into the cluster connecting corrugated pipe is long, and the steel bar connection and anchoring safety is high; the number of the embedded cluster connecting corrugated pipes is reduced under the condition that the reinforcement containing rate of the steel bars is not reduced, the grouting efficiency is high, and the construction speed is high; meanwhile, the top cap segments are assembled quickly, and the prestress installation is convenient.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a mound is assembled to grout bellows tied in a bundle that links to each other with prefabricated cushion cap which characterized in that: the top cap comprises a top cap connecting section and two top cap sections, wherein a top cap connecting key is arranged on the end face of each top cap section, a first embedded steel plate is embedded outside the top cap connecting key, top cap connecting grooves are formed in the end faces of the two sides of the top cap connecting section, the top cap connecting grooves are matched with the top cap connecting keys, a second embedded steel plate is embedded in the two sides of the top cap connecting section, the top cap connecting section is connected with the top cap sections through top cap splicing seams, and the first embedded steel plate and the second embedded steel plate are welded with each other; the foundation is formed by connecting two foundation prefabricated sections through a foundation connecting seam, connecting steel bars or bundling connecting corrugated pipes are pre-embedded in the foundation prefabricated sections, connecting steel bars are pre-embedded in one end of each pier stud section, bundling connecting corrugated pipes are pre-embedded in the other end of each pier stud section, bundling connecting corrugated pipes or connecting steel bars are pre-embedded in the top cap section, and the bundling connecting corrugated pipes correspond to the connecting steel bars one by one; penetrating the embedded connecting steel bars into the cluster connecting corrugated pipes, then pouring high-strength grouting materials, penetrating steel strands into the embedded corrugated pipes embedded in the top cap sections, the pier stud sections and the foundation prefabricated sections, tensioning the steel strands at the tops of the top cap sections, then constructing foundation connecting joints, pouring concrete into the two foundation prefabricated sections, and completing the assembly of the pier.

2. The cluster grouting corrugated pipe assembling pier connected with the prefabricated bearing platform according to claim 1, which is characterized in that: the prefabricated foundation sections are hollow square box bodies, one side of each box body is provided with an opening, the openings of the two prefabricated foundation section box bodies are oppositely arranged, embedded steel bars are arranged on the end faces of the openings of the prefabricated foundation section box bodies, the embedded steel bars extend out of the end faces, the embedded steel bars are mutually connected through foundation connecting steel bars, and foundation connecting joints are poured between the openings of the prefabricated foundation section box bodies to realize the connection between the embedded steel bars; be equipped with the pile foundation preformed hole on the bottom plate of the prefabricated section of basis, insert pile foundation and pile foundation reinforcing bar in the pile foundation preformed hole, realize being connected between basis and the pile foundation.

3. The cluster grouting corrugated pipe assembly pier connected with the prefabricated bearing platform as claimed in claim 1 or 2, wherein: the connecting steel bars are embedded in the foundation and the pier stud segments and extend out of the top surfaces of the foundation and the pier stud segments, the connecting steel bars are composed of three or more common steel bars and arranged in a circular or rectangular mode, and the stirrups are bound on the common steel bars by adopting steel bar cluster arrangement.

4. The cluster grouting corrugated pipe assembling pier connected with the prefabricated bearing platform according to claim 3, which is characterized in that: the cluster connecting corrugated pipe is pre-embedded in the bottom surfaces of the pier column section and the top cap section, corresponds to the connecting steel bars one by one, is circular or rectangular, is 3-5cm larger than one side of the connecting steel bars in size and about 2cm longer than the connecting steel bars in length, and is provided with grouting holes; the cluster connecting corrugated pipe is pre-buried at the inner side of the pier column reinforcing steel bar, is arranged along the periphery of the pier column section and is connected with the pier column reinforcing steel bar.

5. The cluster grouting corrugated pipe assembly pier connected with the prefabricated bearing platform as claimed in claim 1 or 4, wherein: the connecting corrugated pipe is characterized in that spiral ribs are arranged around the cluster connecting corrugated pipe and are arranged in a spiral mode, connected reinforcing steel bars are arranged around the spiral ribs of the cluster connecting corrugated pipe and are connected with the spiral ribs.

6. The cluster grouting corrugated pipe assembling pier connected with the prefabricated bearing platform according to claim 1, which is characterized in that: the connecting steel bars are embedded in the top cap sections and the pier stud sections and extend out of the bottom surfaces of the top cap sections and the pier stud sections, the cluster connecting corrugated pipes are embedded in the top surfaces of the pier stud sections and the foundation and correspond to the connecting steel bars one by one, and the connecting steel bars are inserted into the cluster connecting corrugated pipes for connection; the connected reinforcing steel bars on the cluster connecting corrugated pipe extend upwards, so that the connecting reinforcing steel bars pre-embedded above the cluster connecting corrugated pipe are inserted into the connecting reinforcing steel bars, and the cluster connecting corrugated pipe and the connecting reinforcing steel bars are mutually lapped.

7. The cluster grouting corrugated pipe assembling pier connected with the prefabricated bearing platform according to claim 1, which is characterized in that: the top cap connecting key adopts protruding type structure, pre-buried steel sheet one adopts annular steel sheet, and outline and top cap festival section terminal surface parallel and level are through anchor bar one anchor on the top cap festival section, the top cap spread groove adopts the spill structure, pre-buried steel sheet two adopts annular steel sheet, arranges around top cap linkage segment terminal surface, through anchor bar two anchors on the top cap linkage segment, pre-buried steel sheet both ends stretch out the top cap linkage segment, will adopt the fillet weld to be connected between pre-buried steel sheet two and the pre-buried steel sheet one, realize being connected between top cap linkage segment and top cap festival section.

8. The cluster grouting corrugated pipe assembling pier connected with the prefabricated bearing platform according to claim 1, which is characterized in that: the embedded corrugated pipe is embedded in corresponding positions of the top cap section, the pier stud section and the foundation prefabricated section, U-shaped arrangement is adopted, after the sections are assembled, steel strands penetrate into the embedded corrugated pipe from top to bottom, then the steel strands are arranged according to the U-shaped arrangement and penetrate into the corresponding embedded corrugated pipe from bottom to top, a steel strand anchoring end is arranged above the top cap section, the steel strands are tensioned, and concrete is poured after the foundation construction.

9. The cluster grouting corrugated pipe assembling pier connected with the prefabricated bearing platform according to claim 1, which is characterized in that: the foundation and the pier column sections, the adjacent pier column sections and the top cap sections are connected through splicing seams, and the splicing seams are made of high-strength mortar or ultrahigh-performance concrete; the top cap section and the top cap connecting section are connected through a top cap splicing seam, and the top cap splicing seam is made of epoxy resin glue.

10. The cluster grouting corrugated pipe assembling pier connected with the prefabricated bearing platform according to claim 1, which is characterized in that: the high-strength grouting material is poured into the bundling connection corrugated pipe through the grouting hole, and the high-strength grouting material is grouting material or ultrahigh-performance concrete.

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