Fabricated bridge pier column

Abstract

The utility model discloses an assembly type bridge pier column which comprises a base, a pier column body and a cover beam, the pier column body is hollow, the top of the pier column body is of an open structure, a plurality of annular partition plates are arranged in the pier column body at intervals in the axial direction, and a plurality of reserved holes for longitudinal steel bars to penetrate through are formed in the annular partition plates in the circumferential direction. The utility model relates to the technical field of pier columns, through the design of the base, the pier column, the cover beam, the annular partition plate, the preformed hole, the annular flange, the T-shaped shear keys, the positioning assembly and the like, efficient assembly and stable connection of the pier columns are achieved, and due to the design, the construction efficiency is improved; the stability and the safety of the bridge structure are ensured, the annular partition plates in the column body are combined with the longitudinal steel bars and matched with the steel bar meshes, a strong rigid structure is formed after micro-expansion concrete is poured, the bending resistance and the compression resistance are excellent, and various vertical and horizontal loads transmitted by the upper structure of the bridge can be effectively borne.

Description

TECHNICAL FIELD

[0001] The utility model relates to pier technology field, concretely is a kind of assembly type bridge pier. BACKGROUND

[0002] In modern bridge construction, assembly type structure is widely concerned due to its rapid construction, reduction of on-site operation, improvement of construction precision and other advantages. Especially for bridge pier, assembly type design can significantly shorten construction period, reduce on-site labor intensity and improve overall engineering quality. However, there are some problems in traditional assembly type bridge pier:

[0003] In order to ensure the connection quality, it is usually necessary to carry out complex on-site operations such as steel bar binding, formwork setting and concrete pouring, which increases the construction difficulty and time cost;

[0004] The connection mode between prefabricated components often depends on simple mechanical connection or cast-in-place concrete connection, which may result in insufficient strength and durability of the connection part;

[0005] In order to solve the above problems, it is an urgent need to develop an assembly type bridge pier with efficient connection mechanism, simplified construction process and good seismic performance. SUMMARY

[0006] In view of the deficiencies of the prior art, the utility model provides an assembly type bridge pier, which solves the problems of complex construction and insufficient connection strength of the existing pier.

[0007] To achieve the above purpose, the utility model is implemented by the following technical scheme: an assembly type bridge pier, comprising a base, a pier and a bent cap, the pier is hollow and the top is of an open structure, a plurality of annular partitions are arranged axially inside the pier, a plurality of reserved holes for longitudinal steel bars to pass through are arranged on the annular partitions in the circumferential direction, an annular flange is arranged on the upper wall of the pier, a plurality of T-shaped shear keys are arranged in an annular array on the annular flange, a T-shaped groove matching the T-shaped shear keys is arranged on the lower wall of the bent cap, the annular flange and the bent cap are connected by high-strength bolts, and the bottom of the pier and the base are connected by a positioning assembly.

[0008] Preferably, the positioning assembly comprises a mounting groove arranged in the base, the mounting groove is of a cylindrical structure, an expanded groove extending outward is arranged above the mounting groove, a support ring is fixedly arranged in the mounting groove, a plurality of through holes are arranged on the support ring, the bottom of the pier is of a tapered structure matching the expanded groove, a plurality of anchoring steel bars are fixedly arranged on the lower wall of the pier, a ring cover is fixedly arranged on the upper wall of the base and sleeved on the outer side of the pier, and a pouring opening is arranged on the upper side wall of the ring cover.

[0009] Preferably, a gap for concrete flow is arranged between the flared groove and the tapered structure of the pier bottom.

[0010] Preferably, a steel mesh is arranged on the inner wall of the annular partition plate.

[0011] Preferably, the high-strength bolts are arranged in an annular array on the annular flange.

[0012] Beneficial effects

[0013] The utility model provides a kind of assembly type bridge pier, with following beneficial effects:

[0014] By the design of pedestal, pier, bent cap, annular partition plate, reserved hole, annular flange, T type shear key, positioning assembly and other components, efficient assembly and stable connection of pier are realized, which not only improves construction efficiency, but also ensures the stability and safety of bridge structure.

[0015] The pier is hollow and has an open top structure, and multiple annular partition plates are arranged inside along the axial direction, facilitating the insertion of steel bars and the pouring of concrete. The T type shear key on the annular flange matches the T type slot on the lower wall of the bent cap, and the bent cap and the pier are connected more firmly and reliably through high-strength bolts.

[0016] The annular partition plates inside the column body are combined with longitudinal steel bars, and cooperate with steel mesh to form a strong rigid structure after pouring micro-expansion concrete, which has excellent bending and compression resistance and can effectively bear various vertical and horizontal loads transmitted by the upper structure of the bridge.

[0017] The positioning assembly includes mounting groove, flared groove, support ring, anchoring steel bar, ring cover and other components, ensuring the stable connection between the bottom of the pier and the pedestal. A gap for concrete flow is arranged between the flared groove and the tapered structure of the pier bottom, ensuring the quality of concrete pouring and the reliability of connection. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is a structural schematic diagram of the utility model.

[0019] Fig. 2 It is a top view structural schematic diagram of the utility model.

[0020] In the figure: 1, pedestal; 2, pier; 3, bent cap; 4, annular partition plate; 5, longitudinal steel bar; 6, annular flange; 7, T type shear key; 8, high-strength bolt; 9, mounting groove; 10, flared groove; 11, support ring; 12, anchoring steel bar; 13, ring cover; 14, pouring opening; 15, steel mesh. DETAILED DESCRIPTION

[0021] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0022] Please refer to Figs. 1-2 The utility model provides a technical scheme: an assembly type bridge pier 2, including pedestal 1, pier 2 and bent cap 3, the pier 2 is hollow and the top is open type structure, the inside of pier 2 is spaced apart and is provided with multiple annular partition plates 4 along the axial direction, a plurality of reserved holes for longitudinal reinforcement 5 to pass through are arranged on the annular partition plate 4 along the circumferential direction, the upper end of pier 2 is equipped with the annular flange 6 of outward expansion, the upper wall of annular flange 6 is arranged in a plurality of T-shaped shear keys 7 in annular array, the lower wall of bent cap 3 is equipped with the T-shaped slot matched with T-shaped shear key 7, annular flange 6 and bent cap 3 are connected through high-strength bolt 8, and the bottom of pier 2 and pedestal 1 are connected through positioning assembly.

[0023] Through the above technical scheme, the pier 2 is hollow, and the annular partition plate 4 and the longitudinal reinforcement 5 cooperate to adapt to the change of vertical pressure and bending moment, the open top structure cooperates with the annular flange 6, the T-shaped shear key and the bent cap 3 to be connected, the horizontal force is effectively transmitted, the connection between the bent cap 3 and the pier 2 is stable, and the upper structure of the bridge is maintained stable.

[0024] The embodiment is further provided with the positioning assembly, which comprises a mounting groove 9 arranged in the pedestal 1, the mounting groove 9 is a cylindrical structure, an expanding groove 10 extending outward is arranged above the mounting groove 9, a support ring 11 is fixedly arranged in the mounting groove 9, a plurality of through holes are arranged on the support ring 11, the bottom of the pier 2 is a tapered structure matched with the expanding groove 10, a plurality of anchoring steel bars 12 are fixedly arranged on the lower wall of the pier 2, a ring cover 13 sleeved outside the pier 2 is fixedly arranged on the upper wall of the pedestal 1, and a pouring opening 14 is arranged on the upper side wall of the ring cover 13.

[0025] Through the above technical scheme, the mounting groove 9 and the expanding groove 10 of the pedestal 1 cooperate with the tapered structure of the pier 2 to provide accurate positioning and transverse constraint; the support ring 11 and the anchoring steel bar 12 ensure vertical bearing and prevent the pier 2 from being separated from the pedestal 1 under extreme working conditions; the ring cover 13 and the pouring opening 14 facilitate on-site pouring of concrete to fill the gap, further enhance the integrity of the connection, and resist external damage and settlement influence.

[0026] The embodiment is further provided with the positioning assembly, which comprises a mounting groove 9 arranged in the pedestal 1, the mounting groove 9 is a cylindrical structure, an expanding groove 10 extending outward is arranged above the mounting groove 9, a support ring 11 is fixedly arranged in the mounting groove 9, a plurality of through holes are arranged on the support ring 11, the bottom of the pier 2 is a tapered structure matched with the expanding groove 10, a plurality of anchoring steel bars 12 are fixedly arranged on the lower wall of the pier 2, a ring cover 13 sleeved outside the pier 2 is fixedly arranged on the upper wall of the pedestal 1, and a pouring opening 14 is arranged on the upper side wall of the ring cover 13.

[0027] By adopting the technical scheme, the gap for concrete flow between the flared groove 10 and the tapered structure is designed, concrete pouring is avoided, filling density is ensured, the pier column 2 and the base 1 are connected firmly, structural reliability is improved, and construction operability is optimized.

[0028] The embodiment is further provided with a steel mesh 15 laid flat on the inner wall of the annular partition plate 4.

[0029] By adopting the technical scheme, the steel mesh 15 laid flat on the inner wall of the annular partition plate 4 forms a three-dimensional reinforcement system with the longitudinal steel bars 5 and the concrete, the concrete is constrained from the ring direction, the vertical and horizontal stresses are shared, the ultimate bearing capacity of the pier column 2 is improved, and the structural toughness is enhanced.

[0030] The embodiment is further provided with a plurality of high-strength bolts 8 arranged in an annular array on the annular flange 6.

[0031] By adopting the technical scheme, the plurality of high-strength bolts 8 arranged in an annular array are uniformly distributed in stress, cooperate with the T-shaped shear keys, and strengthen the connection stiffness of the bent cap 3 and the top of the pier column 2.

[0032] The skilled person in the art will connect the parts in the case in sequence, and the specific connection and operation sequence should be referred to the working principle below, and the detailed connection means is a well-known technology in the art, and the working principle and process are mainly introduced below.

[0033] Embodiment: When assembling, the tapered structure at the bottom of the pier column 2 is inserted into the flared groove 10 in the base 1, the cooperation between the two is ensured, the gap between the flared groove 10 and the bottom of the pier column 2 and the inside of the installation groove 9 is filled by pouring concrete through the pouring opening 14 on the ring cover 13, the strength of the connection part is enhanced, the longitudinal steel bars 5 are inserted into the reserved holes on the annular partition plate 4, then the micro-expanding concrete is poured and vibrated in the column body, the column body is formed as a whole, the bent cap 3 is hoisted to above the top of the pier column 2, is slowly lowered, the T-shaped groove of the bent cap 3 is aligned with the T-shaped shear key on the annular flange 6 at the top of the pier column 2, is accurately slid to realize preliminary positioning, then the bent cap 3 and the annular flange 6 are connected closely by screwing the high-strength bolts 8, finally, the epoxy adhesive is poured on the joint surface of the bent cap 3 and the top of the column to fill the gap, after the adhesive is cured, the stable connection of the bent cap 3 and the pier column 2 is completed.

[0034] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises a... " does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0035] While embodiments of the present application have been shown and described with reference to the figures, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made thereto without departing from the spirit and scope of the present application, which should be limited only by the scope of the appended claims and the equivalents thereof.

Claims

1. A fabricated bridge pier column comprising a base (1), a pier column (2) and a bent cap (3), characterized in that, The pier column (2) is hollow and open at the top, multiple annular partitions (4) are arranged axially in the interior of the pier column (2), a plurality of reserved holes for longitudinal steel bars (5) to pass through are arranged on the annular partitions (4) in the circumferential direction, an outwardly expanded annular flange (6) is arranged at the upper end of the pier column (2), the upper wall of the annular flange (6) is arranged in the form of an annular array on a plurality of T-shaped shear keys (7), the lower wall of the bent cap (3) is provided with a T-shaped groove matched with the T-shaped shear keys (7), the annular flange (6) and the bent cap (3) are connected through high-strength bolts (8), and the bottom of the pier column (2) and the base (1) are connected through a positioning assembly.

2. The fabricated bridge pier column of claim 1, wherein, The positioning assembly comprises a mounting groove (9) arranged in the base (1), the mounting groove (9) is in a cylindrical structure, an outwardly expanded flared groove (10) is arranged above the mounting groove (9), a support ring (11) is fixedly arranged in the mounting groove (9), a plurality of through holes are arranged on the support ring (11), the bottom of the pier column (2) is in a tapered structure matched with the flared groove (10), a plurality of anchoring steel bars (12) are fixedly arranged on the lower wall of the pier column (2), and a ring cover (13) sleeved on the outer side of the pier column (2) is fixedly arranged on the upper wall of the base (1), a pouring opening (14) is arranged on the upper side wall of the ring cover (13).

3. The fabricated bridge pier column of claim 2, wherein, A gap for the flow of concrete is arranged between the flared groove (10) and the tapered structure of the bottom of the pier column (2).

4. A fabricated bridge pier column (2) according to claim 3, characterized in that A steel mesh (15) is arranged on the inner wall of the annular partition (4).

5. The fabricated bridge pier column of claim 4, wherein, The high-strength bolts (8) are arranged in the form of an annular array on the annular flange (6).

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