Prefabricated assembled concrete hollow pier in lock sleeve type threaded connection

Abstract

The utility model relates to a prefabricated assembled concrete hollow pier in lock sleeve type threaded connection, which comprises a steel bar connecting piece, the steel bar connecting piece comprises a quick-connection male head and a quick-connection female head which are matched in an inserting manner, the prefabricated assembled concrete hollow pier further comprises a bearing platform, a pier column and a cover beam, a pier column steel bar is arranged in the pier column, and the upper end and the lower end of the pier column steel bar extend out of the concrete hollow pier column and are provided with the quick-connection male heads; a bearing platform reinforcing steel bar extending upwards is arranged in the bearing platform, a cover beam reinforcing steel bar extending downwards is arranged in the cover beam, and the upper end of the bearing platform reinforcing steel bar and the lower end of the cover beam reinforcing steel bar are each provided with a quick-connection female head matched with the quick-connection male head in an inserted mode. The joints among the bearing platform, the pier column and the cover beam are simple in structure and clear in structural stress, sufficient strength, rigidity and energy dissipation capacity of the pier can be guaranteed, meanwhile, the steel bars are connected in an inserted connection mode, the connection quality is good, the situation that a conventional mechanical threaded connector needs the steel bars to rotate or move is avoided, and the construction cost is reduced. The problems that an existing mechanical connection mode is large in construction process difficulty, and the connection quality is difficult to guarantee are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a prefabricated and assembled concrete hollow pier of lock sleeve type threaded connection. BACKGROUND

[0002] Prefabricated and assembled bridge has the advantages of fast construction speed, high construction quality, small influence on environment and existing traffic, and wide application prospect. At present, the prefabricated and assembled technology of bridge superstructure is relatively mature, and the bridge substructure construction is mostly cast in situ, so it is a key problem to ensure that the prefabricated and assembled pier has good performance of cast-in-situ pier to realize the full prefabricated and assembled of bridge superstructure and substructure.

[0003] The concrete hollow pier has large strength and rigidity and excellent seismic performance, and is widely used in high-intensity seismic areas in China. Compared with the concrete solid pier, the concrete hollow pier has light weight and low cost, and is more convenient to hoist. At present, the research and application of concrete hollow piers mostly focus on cast-in-situ concrete hollow piers, and the research and application of prefabricated and assembled concrete hollow piers are less. In order to promote the use of prefabricated and assembled concrete hollow piers, it is necessary to develop a prefabricated and assembled concrete hollow pier connection method with good mechanical properties and convenient construction.

[0004] The existing prefabricated and assembled pier connection methods include cast-in-situ wet joint connection, grouting sleeve connection, grouting corrugated pipe connection, socket connection, slot connection, post-tensioned prestressed tendon connection, flange connection and mechanical connection. The commonly used grouting sleeve connection has less wet operation and good durability, but has high construction precision requirement, difficult grouting quality detection and prolonged construction period due to grouting material solidification. The mechanical connection mainly using threaded sleeve type joint is convenient for construction, but has limited application scenarios and difficult guaranteed connection quality. The existing connection technology limits the application and development of full prefabricated and assembled bridge, especially in high-intensity seismic areas. UTILITY MODEL CONTENTS

[0005] The utility model makes improvements in view of the problems in the prior art, that is, the utility model solves the technical problem of providing a prefabricated and assembled concrete hollow pier of lock sleeve type threaded connection. The utility model has simple and reasonable design, clear structure stress, can guarantee that the pier column has sufficient bearing capacity, rigidity and energy dissipation capacity, and has the characteristics of convenient construction and reliable quality.

[0006] In order to achieve the above object, the utility model adopts the technical scheme: a lock sleeve type threaded connection prefabricated assembled concrete hollow pier, including reinforcing bar connecting piece, the reinforcing bar connecting piece includes the quick -witted male and quick -witted female of insertion cooperation, it further include the bearing platform, concrete hollow pier column and bent cap that are sequentially arranged from bottom to top, the inside of concrete hollow pier column is equipped with pier column reinforcing bar, the upper and lower ends of pier column reinforcing bar respectively extend concrete hollow pier column, and the upper and lower ends of pier column reinforcing bar are provided with quick -witted male;The inside of bearing platform is equipped with the bearing platform reinforcing bar that extends upwards, the inside of bent cap is equipped with the bent cap reinforcing bar that extends downwards, and the upper end of bearing platform reinforcing bar, the lower end of bent cap reinforcing bar is provided with quick -witted female for with quick -witted male insertion cooperation.

[0007] Further, the lower end of bent cap reinforcing bar, the upper end of bearing platform reinforcing bar are all threaded with first sleeve, and the quick -witted female of bent cap reinforcing bar lower end, the quick -witted female of bearing platform reinforcing bar upper end are all located in the inside of first sleeve;The upper and lower ends of pier column reinforcing bar are all screwed with second sleeve, and the quick -witted male of the upper and lower ends of pier column reinforcing bar is all threaded with second sleeve.

[0008] Further, the inside of the one end of first sleeve towards pier column reinforcing bar is threaded with the threaded support sleeve for limiting quick -witted female, and the middle part of threaded support sleeve is beneficial to the quick -witted male along the vertical and penetrates.

[0009] Further, the concrete hollow pier column is provided with variable cross section section at pier top and pier bottom.

[0010] Further, the hollow size of pier top section of concrete hollow pier column, the hollow size of pier bottom section are all less than the hollow size of pier body middle section.

[0011] Further, the concrete hollow pier column is two, and the top surface of bearing platform and the bottom surface of each concrete hollow pier column, the bottom surface of bent cap and the top surface of each concrete hollow pier column form joint and the joint is filled with mortar, and the joint is provided with adjusting assembly for adjusting the height of joint.

[0012] Further, the adjusting assembly includes four adjusting screws that are rectangularly distributed;In the adjusting assembly in the joint between the top surface of bearing platform and the bottom surface of concrete hollow pier column, one end of adjusting screw is threaded with the top surface of bearing platform, and the other end of adjusting screw is in abutment with the bottom surface of concrete hollow pier column;In the adjusting assembly in the joint between the bottom surface of bent cap and the top surface of concrete hollow pier column, one end of adjusting screw is threaded with the bottom surface of bent cap, and the other end of adjusting screw is in abutment with the top surface of concrete hollow pier column.

[0013] Further, the joint is reserved with the clearance of 30mm in height.

[0014] Further, the pier steel bars are uniformly arranged at the outer periphery of the cross section of the concrete hollow pier, four pier steel bars are arranged at the cross section of the concrete hollow pier at equal intervals on each side; a plurality of cap steel bars are arranged on the cap corresponding to the position of each concrete hollow pier, and the positions of the plurality of cap steel bars and the pier steel bars correspond one by one; a plurality of cap beam steel bars are arranged on the cap beam corresponding to the position of each concrete hollow pier, and the positions of the plurality of cap beam steel bars and the pier steel bars correspond one by one.

[0015] Further, the cap and the cap beam are both solid cross sections, and the cap, the concrete hollow pier and the cap beam are all factory prefabricated.

[0016] Compared with the prior art, the utility model has the following effects: the utility model discloses reasonable design, and the node structure between the cap, the pier and the cap beam is simple, and the structure stress is clear, so that the bridge pier can guarantee sufficient strength, rigidity and energy consumption capacity, meanwhile, the steel bars are connected through the plug-in mode, the connection quality is good, the situation that the conventional mechanical screw joint needs to rotate or move the steel bar is avoided, and the problems that the construction process is difficult and the connection quality is difficult to guarantee in the prior art mechanical connection mode are solved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the structure schematic view of the embodiment of the utility model;

[0018] Figure 2 is Figure 1 the A-A cross section view in the figure;

[0019] Figure 3 is Figure 1 the B-B cross section view in the figure;

[0020] Figure 4 is Figure 1 the C-C cross section view in the figure;

[0021] Figure 5 is Figure 1 the D-D cross section view in the figure;

[0022] Figure 6 is the structure schematic view of the steel bar connecting piece in the embodiment of the utility model.

[0023] In the figure:

[0024] 1-cap; 2-concrete hollow pier; 3-cap beam; 4-cap steel bar; 5-pier steel bar; 6-cap beam steel piece; 7-second sleeve; 8-first sleeve; 9-quick connecting male head; 10-quick connecting female head; 11-threaded support sleeve; 12-adjusting screw rod. DETAILED DESCRIPTION

[0025] The utility model will be further explained in detail below in combination with the drawings and specific embodiments.

[0026] In the description of the utility model, it needs to understand that, the orientation or position relation indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are the orientation or position relation based on the orientation shown in the drawings, and are only for the convenience of describing the utility model, and do not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore can not be understood as a limitation on the utility model.

[0027] As shown in Figures 1 to 6 The utility model discloses a lock sleeve type threaded connection prefabricated assembled concrete hollow pier, including reinforcing bar connecting piece, the reinforcing bar connecting piece includes the quick -action male head 9 and quick -action female head 10 of the plug -in cooperation, still including a bearing platform 1, two concrete hollow pier column 2 and a bent cap 3, a bearing platform 1, two concrete hollow pier column 2 and a bent cap 3 are sequentially arranged from below to top, the inside of each concrete hollow pier column 2 is equipped with pier column reinforcing bar 5, the upper and lower ends of pier column reinforcing bar 5 respectively extend concrete hollow pier column 2, and the upper and lower ends of pier column reinforcing bar 5 are all provided with quick -action male head 9, the inside of bearing platform 1 and the position corresponding place of each concrete hollow pier column 2 are all equipped with the bearing platform reinforcing bar 4 that goes up, the inside of bent cap 3 and the position corresponding place of each concrete hollow pier column 2 are all equipped with the bent cap reinforcing bar 6 that goes down, the upper end of bearing platform reinforcing bar 4, the lower end of bent cap reinforcing bar 6 are all provided with quick -action female head 10 for with quick -action male head 9 Plug -in cooperation.The bearing platform reinforcing bar of bearing platform and the pier column reinforcing bar of each concrete hollow pier column are connected through the plug -in cooperation of quick -action male head, quick -action female head, and the bent cap reinforcing bar of bent cap and the pier column reinforcing bar of each concrete hollow pier column are connected through the plug -in cooperation of quick -action male head, quick -action female head, avoid the situation that the conventional mechanical screw joint needs reinforcing bar rotation or movement, solve the problem that the construction technology of current mechanical connection mode is difficult, and the connection quality is difficult to guarantee.

[0028] In the embodiment, the lower end of the bent cap reinforcing bar 6 and the upper end of the bearing platform reinforcing bar 4 are all threadedly connected with a first sleeve 8, and the quick -action female head 10 of the lower end of the bent cap reinforcing bar 6 and the quick -action female head 10 of the upper end of the bearing platform reinforcing bar 4 are all located inside the first sleeve 8, the upper and lower ends of the pier column reinforcing bar 5 are all screwed with a second sleeve 7, and the quick -action male head 9 of the upper and lower ends of the pier column reinforcing bar 5 is all threadedly connected with the second sleeve 7.

[0029] In the embodiment, the first sleeve 8 is threadedly connected with a threaded support sleeve 11 for limiting the quick -action female head 10 inside one end of the pier column reinforcing bar 5, and the middle of the threaded support sleeve 11 is vertically penetrated by the quick -action male head 9.

[0030] Furthermore, the outer diameter of the first sleeve 8 is larger than the outer diameter of the second sleeve 7, and the cross-sectional dimensions of the foundation 1 and the cap beam 3 are larger than the cross-sectional dimensions of the pier column 2. In order to ensure that the concrete protective layer thickness at the pre-embedded part of the steel reinforcement connector meets the durability requirements, the first sleeve 8 with a larger outer diameter is set in the solid cross-section of the foundation 1 and the cap beam 3, and the second sleeve 7 with a smaller outer diameter is set in the hollow cross-section of the pier column 2.

[0031] In this embodiment, the rebar connector consists of a quick-connect male connector 9, a quick-connect female connector 10, a first sleeve 8, and a second sleeve 7. The quick-connect male connector 9 is a pin structure with an annular groove on one end of its outer periphery. The quick-connect female connector 10 has a steel ball that can be embedded in the annular groove. The structure of the rebar connector is the same as the PHC pipe pile weldless quick-connect method and pull-out quick-installation structure disclosed in Chinese Patent Publication No. CN106013090B. That is, in this embodiment, the pull-out quick-installation structure in the published patent is directly used as the rebar connector. The first sleeve and the second sleeve are the rebar head sleeves in the published patent. The quick-connect female connector and the quick-connect male connector form the quick connector of the published patent. Therefore, the specific structure and working principle of the rebar connector in this embodiment will not be repeated here.

[0032] Combination Figure 3 and Figure 4 In this embodiment, the concrete hollow pier 2 is an integrally precast rectangular hollow cross-section reinforced concrete pier with a larger wall thickness in the transverse direction and a smaller wall thickness in the longitudinal direction. Variable cross-section sections are set at the top and bottom of the pier. To reduce the self-weight of the pier, the hollow dimension of the middle section of the pier body is larger. To increase the cross-sectional stiffness, the hollow dimensions of the top and bottom sections of the pier are smaller. That is, the hollow dimensions of the top and bottom sections of the concrete hollow pier are smaller than the hollow dimensions of the middle section of the pier body.

[0033] In this embodiment, joints are formed between the top surface of the pier cap 1 and the bottom surface of each hollow concrete pier 2, and between the bottom surface of the cap beam 3 and the top surface of each hollow concrete pier 2. These joints are filled with high-strength mortar, and an adjustment component for adjusting the joint height is provided within each joint. Preferably, the adjustment component includes four rectangularly distributed adjustment screws 12, arranged vertically. That is, a total of eight adjustment screws are provided on the pier cap 1, and a total of eight adjustment screws are also provided on the cap beam 3.

[0034] In this embodiment, in the adjustment assembly located in the joint between the top surface of the foundation 1 and the bottom surface of the hollow concrete pier 2, one end of the adjustment screw 12 is threaded to the top surface of the foundation 1, and the other end of the adjustment screw 12 abuts against the bottom surface of the hollow concrete pier 2. The position of the adjustment screw is closer to the center of the joint surface than the foundation reinforcement 4 and the first sleeve.

[0035] In this embodiment, the one end of the adjusting screw 12 is screwed with the bottom surface of the bent cap 3, and the other end of the adjusting screw 12 abuts against the top surface of the concrete hollow pier column 2. The position of the adjusting screw is closer to the center of the joint surface than the first sleeve and the bent cap steel bar 4.

[0036] In this embodiment, the joint between the bottom surface of the concrete hollow pier column 2 and the top surface of the pile cap 1 and the joint between the top surface of the concrete hollow pier column 2 and the bottom surface of the bent cap 3 are reserved with a gap of 30mm in height, so as to install and use the adjusting screw 14 to adjust the verticality of the concrete hollow pier column 2 and the bent cap 3. The bottom surface of the concrete hollow pier column 2 abuts against the top surface of the adjusting screw arranged on the top of the pile cap 1, and the top surface of the concrete hollow pier column 2 abuts against the bottom surface of the adjusting screw arranged on the bottom of the bent cap 3. The adjusting screw 14 is screwed to a height of 30mm between the top surface of the pile cap 1 or the bottom surface of the bent cap 3, so as to control the height between the top surface of the pile cap 1 and the bottom surface of the concrete hollow pier column 2 and the height between the top surface of the concrete hollow pier column 2 and the bottom surface of the bent cap 3. After the connection of the pile cap 1 and the concrete hollow pier column 2 is completed, the verticality of the concrete hollow pier column 2 relative to the pile cap 1 is adjusted by adjusting the top surface height of the four adjusting screws respectively. After the connection of the concrete hollow pier column 2 and the bent cap 3 is completed, the verticality of the bent cap 3 relative to the concrete hollow pier column 2 is adjusted by adjusting the top surface height of the four adjusting screws respectively. After the verticality adjustment is completed, the joints between the bottom surface of the concrete hollow pier column 2 and the top surface of the pile cap 1 and the joints between the top surface of the concrete hollow pier column 2 and the bottom surface of the bent cap 3 are filled with high-strength mortar.

[0037] In this embodiment, the pier steel bars 5 are uniformly arranged on the outer periphery of the cross section of the concrete hollow pier column 2. Four pier steel bars 5 are arranged at equal intervals on each side of the cross section of the concrete hollow pier column 2, and the horizontal spacing of the pier steel bars 5 is equal. A plurality of pile cap steel bars 4 are arranged on the pile cap 1 at positions corresponding to each of the concrete hollow pier columns 2, and the positions of the plurality of pile cap steel bars 4 correspond to the positions of the pier steel bars 5 one by one. A plurality of bent cap steel bars 6 are arranged on the bent cap 3 at positions corresponding to each of the concrete hollow pier columns 2, and the positions of the plurality of bent cap steel bars 6 correspond to the positions of the pier steel bars 5 one by one. That is, the positions of the pier steel bars, the bent cap steel bars and the pile cap steel bars correspond to each other one by one, and the steel bars are connected by the steel bar connecting pieces.

[0038] In this embodiment, the pile cap 1 and the bent cap 3 are solid cross sections, and the pile cap 1, the concrete hollow pier column 2 and the bent cap 3 are all prefabricated in the factory.

[0039] In this embodiment, the construction process of the prefabricated and assembled concrete hollow pier with the lock sleeve type threaded connection comprises the following steps:

[0040] (1) Install the first sleeve 8 on the upper end of the cap beam reinforcement 4 of the bearing platform 1 and the lower end of the cap beam reinforcement 6 of the cap beam 3, and then install the quick-connect female head 10 and the threaded support sleeve 13 in the first sleeve 8;

[0041] (2) Install the second sleeve 7 on the upper and lower ends of the pier column reinforcement 5, and then install the quick-connect male head 9 in the second sleeve 7;

[0042] (3) Install the adjusting screw 12 on the top of the bearing platform 1 and the bottom of the cap beam 3;

[0043] (4) Hoist the concrete hollow pier column 2 to the top surface of the bearing platform 1, and then insert the quick-connect male head 9 of the concrete hollow pier column 2 into the quick-connect female head in the first sleeve 8 of the bearing platform 1;

[0044] (5) Rotate the adjusting screw of the bearing platform 1 to make the concrete hollow pier column 2 perpendicular to the bearing platform 1, and then tighten the quick-connect male head 9 with the second sleeve 7;

[0045] (6) Hoist the cap beam 3 to the top surface of the concrete hollow pier column 2, and then insert the quick-connect male head 9 of the concrete hollow pier column 2 into the quick-connect female head 10 in the first sleeve 8 of the cap beam 3;

[0046] (7) Rotate the adjusting screw 14 of the cap beam 3 to make the cap beam 3 perpendicular to the concrete hollow pier column 2, and then tighten the quick-connect male head 9 with the second sleeve 7;

[0047] (8) Seal and grout the joints. Surround the joints between the concrete hollow pier column 2 and the bearing platform 1, and the concrete hollow pier column 2 and the cap beam 3 with formwork, and fill the joints with grout.

[0048] In the above step (1), after the installation of the quick-connect female head 10 is completed, anti-rust grease is injected into the first sleeve 8.

[0049] In the above step (3), the height between the top surface of the adjusting screw 12 and the connecting surface is 30 mm.

[0050] In the above step (8), the bottom of the formwork is sealed with foam glue, and the top is reserved with a grouting opening and a vent hole.

[0051] The utility model discloses, the connecting joint structure between the bearing platform, the pier column and the bent cap is simple, and the structure stress is clear, can guarantee that the pier has enough strength, rigidity and energy consumption ability, the reinforcing bar connecting piece directly uses the anti -pulling quick -mounting structure of prior art patent disclosure, and the construction is convenient, avoids the construction precision requirement high, grouting quality difficult detection, grouting material solidification leads to the drawback of the period extension of commonly used grouting sleeve connection, the connection between the reinforcing bars is completed through the quick -wired male, quick -wired female insertion cooperation mode, avoids the reinforcing bar rotation or the situation of moving of conventional mechanical screw joint, solves the construction technology difficulty of the mechanical connection mode of prior art, the quality guaranteeing problem of connection.

[0052] If the utility model discloses or involves the mutual fixed connection of parts or structural members, then, except for another declaration, fixed connection can be understood as: detachable fixed connection (for example using bolt or screw connection), also can be understood as: the fixed connection of undetachable (for example riveting, welding), of course, the mutual fixed connection can be replaced by integral structure (for example using casting process integral forming manufacturing) (obviously cannot adopt integral forming process except for).

[0053] In addition, the meaning of the term used for indicating the position relationship or shape in any of the technical solutions disclosed in the utility model includes the state or shape similar, analogous or close to it, except for another declaration.

[0054] Any component provided by the utility model can be assembled from a plurality of individual components, or can be an individual component manufactured by integral forming process.

[0055] Finally, it should be explained that: the above embodiment is only used to illustrate the technical scheme of the utility model and is not limited to it; although the utility model has been described in detail with reference to the preferred embodiment, those skilled in the art should understand that: the specific implementation of the utility model can still be modified or some technical features can be replaced by the equivalent; without departing from the spirit of the technical scheme of the utility model, it should be covered in the technical scheme range of the utility model claimed by the utility model.

Claims

1. A precast assembled hollow concrete pier with a locking sleeve type threaded connection, comprising a reinforcing bar connector, wherein the reinforcing bar connector includes a quick-connect male and a quick-connect female for plug-in mating, characterized in that: It also includes a foundation, a hollow concrete pier, and a cap beam arranged sequentially from bottom to top. The hollow concrete pier has pier reinforcement bars inside, with the upper and lower ends of the pier reinforcement bars extending out of the hollow concrete pier. Both the upper and lower ends of the pier reinforcement bars are provided with quick-connect male connectors. The foundation has foundation reinforcement bars extending upward inside, and the cap beam has cap beam reinforcement bars extending downward inside. The upper end of the foundation reinforcement bars and the lower end of the cap beam reinforcement bars are provided with quick-connect female connectors for insertion and mating with the quick-connect male connectors.

2. The precast assembled hollow concrete pier with locking sleeve threaded connection according to claim 1, characterized in that: The lower end of the cap beam reinforcement and the upper end of the pier reinforcement are both threaded with a first sleeve. The quick-connect female ends of the lower end of the cap beam reinforcement and the quick-connect female ends of the upper end of the pier reinforcement are both located inside the first sleeve. The upper and lower ends of the pier column reinforcement are both threaded with a second sleeve. The quick-connect male ends of the upper and lower ends of the pier column reinforcement are both threaded with the second sleeve.

3. A precast assembled hollow concrete pier with a locking sleeve threaded connection according to claim 2, characterized in that: The first sleeve has an internal threaded connection at the end facing the pier reinforcement with a threaded support sleeve for limiting the position of the quick-connect female head. The middle of the threaded support sleeve is designed to allow the quick-connect male head to pass through vertically.

4. A precast assembled hollow concrete pier with a locking sleeve threaded connection according to claim 1, characterized in that: The hollow concrete pier has variable cross-section sections at the top and bottom.

5. A precast assembled hollow concrete pier with a locking sleeve threaded connection according to claim 1, characterized in that: The hollow dimensions of the top and bottom sections of the concrete hollow pier are both smaller than the hollow dimensions of the middle section of the pier body.

6. A precast assembled hollow concrete pier with a locking sleeve threaded connection according to claim 1, characterized in that: The concrete hollow pier consists of two columns. Joints are formed between the top surface of the pier cap and the bottom surface of each concrete hollow pier, and between the bottom surface of the cap beam and the top surface of each concrete hollow pier. These joints are filled with mortar, and an adjustment component for adjusting the joint height is installed inside each joint.

7. A precast assembled hollow concrete pier with a locking sleeve threaded connection according to claim 6, characterized in that: The adjustment assembly includes four rectangularly distributed adjustment screws; in the adjustment assembly located in the joint between the top surface of the pier cap and the bottom surface of the hollow concrete pier column, one end of the adjustment screw is threaded to the top surface of the pier cap, and the other end of the adjustment screw abuts against the bottom surface of the hollow concrete pier column; in the adjustment assembly located in the joint between the bottom surface of the cap beam and the top surface of the hollow concrete pier column, one end of the adjustment screw is threaded to the bottom surface of the cap beam, and the other end of the adjustment screw abuts against the top surface of the hollow concrete pier column.

8. A precast assembled hollow concrete pier with a locking sleeve threaded connection according to claim 6, characterized in that: The joint has a 30mm gap.

9. A precast assembled hollow concrete pier with a locking sleeve threaded connection according to claim 6, characterized in that: The pier reinforcement bars are evenly distributed around the outer perimeter of the cross-section of the hollow concrete pier, with four pier reinforcement bars equally spaced on each side of the cross-section. Multiple pier reinforcement bars are provided on the pier cap at positions corresponding to each hollow concrete pier, with each pier reinforcement bar corresponding to one of the pier reinforcement bars. Multiple cap beam reinforcement bars are provided on the cap beam at positions corresponding to each hollow concrete pier, with each cap beam reinforcement bar corresponding to one of the pier reinforcement bars.

10. A precast assembled hollow concrete pier with a locking sleeve threaded connection according to claim 1, characterized in that: The pier cap and the cap beam are all solid sections, and the pier cap, hollow concrete pier column and the cap beam are all prefabricated in the factory.

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