Prefabricated bent cap and pier connecting structure

Abstract

The utility model discloses a prefabricated cover beam and bridge pier connecting structure which comprises a bearing platform, a prefabricated bridge pier and a cover beam which are sequentially spliced from bottom to top, splicing parts are formed on the bearing platform, the prefabricated bridge pier and the cover beam, splicing components are arranged at the splicing parts, and the prefabricated bridge pier and the cover beam are spliced through the splicing components. The fastening component is used for fastening the two adjacent splicing components after the two adjacent splicing components are spliced; according to the utility model, the lateral bearing capacity at the splicing part can be increased, so that the splicing strength is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated bridge assembly, in particular to a prefabricated cap beam and bridge pier connection structure. Background Art

[0002] With the development and promotion of prefabricated concrete structure assembly technology, more and more on-site cast construction components in bridge projects have begun to adopt factory prefabrication and on-site assembly construction methods; factory prefabrication of bridge structural parts can improve construction quality and component manufacturing accuracy, thereby improving the durability of the structure; on-site assembly of components can greatly improve construction efficiency and significantly reduce the impact of on-site construction on the environment and traffic.

[0003] In the current prefabricated bridge construction, the abutment, piers and cap beam are generally spliced together from bottom to top. Compared with the traditional modeling and cast-in-place bridge construction, the prefabricated structure can significantly improve construction efficiency and shorten the construction period. However, the lateral bearing capacity of the joints between the abutment and the pier, and between the pier and the cap beam is relatively low. Under the action of lateral loads, cracks will occur at the joints. If not discovered and repaired in time, the safety hazard of bridge collapse may occur. Utility Model Content

[0004] The purpose of the utility model is to provide a prefabricated cap beam and bridge pier connection structure, which can increase the lateral bearing capacity of the splicing point, thereby improving the splicing strength.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A prefabricated cap beam and pier connection structure includes a cap, a prefabricated pier and a cap beam spliced together in sequence from bottom to top, wherein the cap, the prefabricated pier and the cap beam are all formed with a splicing portion, wherein a splicing component is provided at the splicing portion, and a fastening component is provided for fastening two adjacent splicing components after splicing, wherein a plurality of tie bars are provided in the splicing component, and the tie bars are arranged in a crisscross manner.

[0007] On the basis of the above technical solution, the present invention can be improved as follows:

[0008] Furthermore, the splicing component is a pre-embedded steel section, the anchoring end of the pre-embedded steel section is pre-embedded in the splicing portion, and the splicing end of the pre-embedded steel section extends out of the splicing surface of the splicing portion.

[0009] Furthermore, a reinforcing rib is provided between the embedded steel and the fastening portion.

[0010] Furthermore, a splicing seam is formed between two adjacent splicing parts, and a mortar layer for covering the embedded steel section is provided at the splicing seam.

[0011] Furthermore, a plurality of anchoring steel bars are embedded in the splicing portion, the anchoring steel bars are arranged at intervals along the contour of the embedded steel section, and the anchoring steel bars are fixed to the inner circumference of the embedded steel section by welding.

[0012] Furthermore, the embedded steel section is provided with a plurality of spaced apart fastening portions on its outer peripheral surface, and the fastening portions extend out of the splicing portion. When spliced, the fastening portions of two adjacent embedded steel sections correspond one to one.

[0013] Furthermore, the fastening portion is provided with bolt through holes for fastening by means of high-strength bolts cooperating with the fastening components during splicing, and the bolt through holes on two adjacent fastening portions are staggered.

[0014] Furthermore, the fastening components are fastening plates arranged in pairs. During fastening, each pair of the fastening plates is clamped on both sides of the fastening portion on the embedded steel section, and the fastening is completed by inserting the high-strength bolts. The fastening plates are correspondingly provided with bolt through holes for the high-strength bolts to penetrate.

[0015] Compared with the existing technology, the technology of this utility model has the following advantages:

[0016] In the utility model, splicing components are provided at the splicing parts of the pedestal, prefabricated pier and cap beam. When splicing each other, two adjacent splicing components are fastened by fastening components. A plurality of tie bars are provided in the splicing components, and the tie bars are arranged crisscrossly, which can increase the lateral bearing capacity of the splicing part, improve the splicing strength and avoid cracking. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 This is a structural diagram of the utility model prefabricated cap beam and bridge pier connection structure;

[0019] Figure 2 This is a schematic diagram of the connection between the utility model bearing platform and the prefabricated bridge pier;

[0020] Figure 3 This is a schematic diagram of the connection between the utility model cap beam and the prefabricated bridge pier;

[0021] Figure 4 for Figure 3 A magnified view of point A;

[0022] Figure 5 It is a schematic diagram of the top view of the structure of the utility model splicing component.

[0023] Markings on the attached figure: 1-base, 2-precast pier, 3-cap beam, 4-embedded steel, 401-fastening part, 5-mortar layer, 6-anchor steel bar, 7-high-strength bolt, 8-fastening plate, 9-tension bar. DETAILED DESCRIPTION

[0024] The following further describes the specific embodiments of the present invention in conjunction with the accompanying drawings. The description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0025] See also Figures 1 to 5 The utility model relates to a connection structure of a prefabricated cap beam 3 and a bridge pier, comprising a cap 1, a prefabricated pier 2 and a cap beam 3 which are spliced in sequence from bottom to top; wherein, the top of the cap 1, the top and bottom ends of the prefabricated pier 2, and the bottom end of the cap beam 3 are all provided with a splicing portion, and a splicing component is provided at the splicing portion, as well as a fastening component for fastening two adjacent splicing components after splicing.

[0026] Specifically, the splicing component is an embedded steel 4, one end of the embedded steel 4 is an anchoring end and is embedded in the splicing part, and the other end of the embedded steel 4 is a splicing end and extends out of the splicing surface of the splicing part; during splicing, the splicing ends of two adjacent embedded steels 4 are spliced together and fastened by fastening components. After fastening, the splicing surfaces of the splicing ends of the two adjacent embedded steels 4 fit together, and a splicing seam is formed between the two adjacent splicing parts. A mortar layer 5 for covering the embedded steel 4 is provided at the splicing seam to prevent the splicing components and the fastening components from being exposed and rusting, thereby extending the service life.

[0027] The embedded steel section 4 is a rectangular frame structure, and a plurality of anchoring steel bars 6 are embedded in the splicing part. The anchoring steel bars 6 are arranged at intervals along the outline of the embedded steel section 4, and the anchoring steel bars 6 are welded and fixed to the inner peripheral surface of the embedded steel section 4; the embedded steel section 4 is provided with a plurality of spaced fastening parts 401 on the outer peripheral surface, and the fastening parts 401 extend out of the splicing part; when splicing, the fastening parts 401 of two adjacent embedded steel sections 4 correspond one to one, and the fastening is completed by the cooperation of the fastening components.

[0028] In this embodiment, the fastening portion 401 is a rectangular plate structure. The fastening portion 401 and the embedded steel 4 are integrally formed. The fastening portion 401 is vertically arranged and perpendicular to the outer peripheral surface of the embedded steel 4. Two bolt through holes are vertically spaced apart on the fastening portion 401 so that the high-strength bolts 7 can cooperate with the fastening components to complete the fastening during splicing. The bolt through holes on two adjacent fastening portions 401 are staggered to facilitate locking of the high-strength bolts 7 during splicing.

[0029] The fastening components are fastening plates 8 arranged in pairs. The fastening plates 8 are rectangular plate structures. When fastening, each pair of fastening plates 8 is clamped on both sides of the fastening part 401 on the embedded steel 4, and the fastening is completed by inserting high-strength bolts 7. Four bolt through holes for the high-strength bolts 7 to penetrate are correspondingly provided on the fastening plates 8 along the length direction; through the cooperation of the fastening plates 8, the fastening parts 401 and the high-strength bolts 7, the lateral bearing capacity of the pier can be increased and the splicing strength can be improved.

[0030] A plurality of tie bars 9 are provided in the embedded steel 4. The tie bars 9 are arranged in a crisscross pattern. Both ends of the tie bars 9 extend out of the embedded steel 4 and are locked by nuts, which can further increase the lateral bearing capacity of the pier.

[0031] A reinforcing rib is provided between the embedded steel 4 and the fastening portion 401 , and the strength of the fastening portion 401 is enhanced by the reinforcing rib to increase the lateral bearing capacity of the pier.

[0032] During the specific implementation, the foundation 1, the pier 2 and the cap beam 3 are prefabricated first, and then high-strength non-shrinkage mortar is poured on the splicing part of the foundation 1. The prefabricated pier 2 is then hoisted above the foundation 1 and slowly lowered to complete the splicing, and the mortar overflowed during the splicing is cleared; after splicing, the fastening is completed by fastening plates 8 and bolts, and a mortar layer 5 is set at the splicing seam; finally, the cap beam 3 is installed in this way, and the bridge body is finally assembled as a whole.

[0033] The above embodiments of the present invention are not intended to limit the scope of protection of the present invention, and the implementation methods of the present invention are not limited thereto. All other modifications, replacements or changes made to the above structure of the present invention based on the above contents of the present invention, in accordance with common technical knowledge and customary means in this field, without departing from the above basic technical ideas of the present invention, should fall within the scope of protection of the present invention.

Claims

1. A prefabricated cap beam and bridge pier connection structure, comprising a cap, a prefabricated bridge pier and a cap beam spliced sequentially from bottom to top, characterized in that: The pedestal, the prefabricated pier and the cap beam are all formed with a splicing portion, at which a splicing component is provided, as well as a fastening component for fastening two adjacent splicing components after splicing. A plurality of tie bars are provided in the splicing component, and the tie bars are arranged in a crisscross manner.

2. The prefabricated cap beam and bridge pier connection structure according to claim 1, characterized in that: The splicing component is a pre-embedded steel section, the anchoring end of the pre-embedded steel section is pre-embedded in the splicing portion, and the splicing end of the pre-embedded steel section extends out of the splicing surface of the splicing portion.

3. The prefabricated cap beam and bridge pier connection structure according to claim 2, characterized in that: The embedded steel section is provided with a plurality of spaced apart fastening parts on its outer peripheral surface, and the fastening parts extend out of the splicing parts. When spliced, the fastening parts of two adjacent embedded steel sections correspond to each other one by one.

4. The prefabricated cap beam and bridge pier connection structure according to claim 3, characterized in that: A reinforcing rib is provided between the embedded steel and the fastening portion.

5. The prefabricated cap beam and pier connection structure according to claim 2, characterized in that: A splicing seam is formed between two adjacent splicing parts, and a mortar layer for covering the embedded steel is provided at the splicing seam.

6. The prefabricated cap beam and bridge pier connection structure according to claim 2, characterized in that: A plurality of anchoring steel bars are embedded in the splicing portion. The anchoring steel bars are arranged at intervals along the outline of the embedded steel section, and the anchoring steel bars are fixed to the inner circumference of the embedded steel section by welding.

7. The prefabricated cap beam and bridge pier connection structure according to claim 3, characterized in that: The fastening parts are provided with bolt through holes for fastening by high-strength bolts in cooperation with the fastening components during splicing, and the bolt through holes on two adjacent fastening parts are staggered.

8. The prefabricated cap beam and bridge pier connection structure according to claim 7, characterized in that: The fastening components are fastening plates arranged in pairs. When fastening, each pair of the fastening plates is clamped on both sides of the fastening part on the embedded steel section, and the fastening is completed by inserting the high-strength bolts. The fastening plates are correspondingly provided with bolt through holes for the high-strength bolts to penetrate.

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