Stand column and cover beam joint connecting structure
By installing reinforcing steel bars and prestressed steel strand corrugated pipes between the columns and the precast UHPC cap beams, and combining this with the cast-in-place concrete section for the pier-beam consolidation, the connection problem between the cap beams and columns was solved, achieving integrated construction and improving construction efficiency and quality.
Patent Information
- Application Number
- CN202423227776.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2034-12-26
AI Technical Summary
In existing technologies, the weight of the cap beam is relatively large, which limits the hoisting equipment and makes it impossible to adopt segmented splicing construction. Furthermore, it is difficult to achieve a unified connection between the column and the cap beam, which affects the construction accuracy and quality.
By setting reinforcing steel bars and prestressed steel strand corrugated pipes between the column and the precast UHPC cap beam, and combining them with the cast-in-place concrete of the pier-beam consolidation section, the column and UHPC-RC composite cap beam are connected as a whole, avoiding segmented hoisting and splicing.
This design achieves an integral connection between the columns and the cap beam, reducing construction difficulty, improving construction efficiency and quality, and yielding good economic and social benefits.
Smart Images
Figure CN223706233U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to bridge construction technical field, concretely relates to a column and bent cap node connecting structure. BACKGROUND
[0002] Compared with the traditional concrete bridge construction, the prefabricated assembly construction can accelerate the construction speed, save resources and energy, reduce the environmental interference on the construction, and improve the construction quality and safety level. It is especially suitable for the construction of municipal roads, highways and railways in complex traffic and dangerous environment.
[0003] The conventional prefabricated and assembled bent cap column type pier structure needs to be segmented prefabricated and hoisted and spliced on site due to the large weight of the bent cap and the lifting weight limitation of the hoisting equipment or the site limitation, which puts forward high requirements on the docking precision and construction quality of the on-site construction. For the column located at the two ends of the bent cap, the construction method of segmented splicing of the bent cap cannot be used. SUMMARY
[0004] The utility model aims at the deficiency of the prior art, and provides a column and bent cap node connecting structure, which realizes the overall connection between the column and the assembled cast-in-place UHPC-RC combined bent cap by optimizing the connecting structure therebetween, avoids the problem of segmented hoisting and splicing of the bent cap, and effectively enables the UHPC prefabricated structure and the RC cast-in-place structure to bear force in cooperation, which is beneficial to rapid, standardized and high-precision construction.
[0005] The utility model is achieved by the following technical scheme:
[0006] A column and bent cap node connecting structure, comprising a prefabricated UHPC bent cap and a column, wherein the prefabricated UHPC bent cap is arranged above the column, characterized in that: the stress reinforcement of the column extends upward into the interior of the prefabricated UHPC bent cap, the column and the prefabricated UHPC bent cap are connected by a pier beam consolidation cast-in-place segment concrete to form an integral structure, and a bent cap prestressed steel strand corrugated pipe is embedded in the interior of the prefabricated UHPC bent cap.
[0007] The column comprises cast-in-place segment concrete, and the cast-in-place segment concrete is poured to the beam bottom position of the prefabricated UHPC bent cap.
[0008] The top surface of the cast-in-place segment concrete is chiseled.
[0009] The prefabricated UHPC bent cap comprises bent cap post-poured segment concrete, and the bent cap post-poured segment concrete is located in the area outside the pier beam consolidation cast-in-place segment concrete.
[0010] The pier beam consolidation cast-in-place segment concrete is chiseled on the side surface corresponding to the bent cap post-poured segment concrete.
[0011] The prestressed steel strand corrugated pipe inside the cover beam is provided with a prestressed steel beam.
[0012] The utility model discloses the advantages are: have very strong practicality, solve the connection problem of bridge lower part cover beam column type pier structure cover beam and stand, propose a kind of stand and cover beam node connection structure, solve the connection of assembly cast-in-place type UHPC-RC combined cover beam column type pier structure stand and cover beam, realize that stand and assembly cast-in-place type UHPC-RC combined cover beam are connected into whole, avoid the problem that cover beam is hoisted and spliced in section, reduce engineering construction difficulty, make construction more economic and convenient, effect is good, have very high popularization and use value. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 It is the utility model pier beam connecting place stand main reinforcement elevation arrangement drawing;
[0014] Figure 2 It is the utility model pier beam connecting place stand main reinforcement section arrangement drawing;
[0015] Figure 3 It is the utility model pier beam connecting place concrete block pouring schematic elevation;
[0016] Figure 4 It is the utility model pier beam connecting place concrete block pouring schematic section. DETAILED DESCRIPTION
[0017] the features of the utility model and other related features are further explained in detail by embodiment in conjunction with drawings, so as to facilitate the understanding of the same industry technical personnel:
[0018] As Figures 1-4 Shown, the various designations in the drawing respectively indicate: prefabricated UHPC cover beam 1, stand stress reinforcement 2, cover beam prestressed steel strand corrugated pipe 3, stand cast-in-place segment concrete 4, pier beam consolidation cast-in-place segment concrete 5, cover beam post-cast segment concrete 6.
[0019] Embodiment: as Figures 1 to 4 Shown, the stand and cover beam node connection structure in this embodiment when implementing, include following flow:
[0020] First, prefabricated UHPC cover beam 1 is prefabricated in factory, and after block transportation to the field, it is assembled and connected into shape.In the prefabricated UHPC cover beam 1 inside, the cover beam reinforcement except the part of the stand top position is bound.
[0021] Secondly, the column stress reinforcement 2 is bound on site, and the column cast-in-place section concrete 4 is poured. The column stress reinforcement 2 extends upward into the interior of the prefabricated UHPC cap beam 1, and the column cast-in-place section concrete 4 is poured to the bottom of the cap beam. After the column cast-in-place section concrete 4 reaches a certain strength, the concrete at the top surface of the column is chiseled.
[0022] Then, the prefabricated UHPC cap beam 1 is hoisted to the top of the pier, the prefabricated UHPC cap beam 1 is adjusted and accurately positioned, the cap beam prestressed steel strand corrugated pipe 3 is positioned, and the cap beam reinforcement at the top of the pier is bound and connected with other position reinforcements to form a whole. The pier beam consolidation cast-in-place section concrete 5 is poured, and the pier beam consolidation is realized.
[0023] After the pier beam consolidation cast-in-place section concrete 5 reaches a certain strength, the surface of the concrete is chiseled. Finally, the cap beam post-pouring section concrete 6 is poured, the prestressed steel strand is threaded in the cap beam prestressed steel strand corrugated pipe 3, and the prestressed steel strand is tensioned, the UHPC-RC combined cap beam construction is completed, and the overall connection and cooperative stress of the assembly cast-in-place UHPC-RC combined cap beam column pier structure are realized.
[0024] The application provides a column and cap beam joint connection structure, solves the connection between the column and the cap beam of the assembly cast-in-place UHPC-RC combined cap beam column pier structure, realizes the connection of the column and the assembly cast-in-place UHPC-RC combined cap beam into a whole, avoids the problem of segmented hoisting and splicing of the cap beam, reduces the engineering construction difficulty, makes the construction more economical and convenient, has good effect, has high popularization and application value, has good technical and economic performance, obvious social benefits, and wide application prospect.
[0025] Although the above embodiments have been described in detail with reference to the accompanying drawings, those skilled in the art can realize that various improvements and changes can be made to the application without departing from the scope defined by the claims, and therefore, detailed description is not given here.
Claims
1. A column-to-bent cap joint connection structure comprising a precast UHPC bent cap and a column, the precast UHPC bent cap is disposed above the column, characterized in that: The force bearing steel bars of the column extend upwardly to the interior of the prefabricated UHPC cap beam, and the column and the prefabricated UHPC cap beam are connected by pier beam solidified cast-in-place segment concrete to form an integral structure, and the prefabricated UHPC cap beam is embedded with cap beam prestressed steel strand corrugated pipes.
2. The column-to-girder joint connection structure according to claim 1, characterized in that: The column comprises cast-in-place segment concrete which is poured to the beam bottom position of the prefabricated UHPC cap beam.
3. The column-to-girder joint connection structure according to claim 2, characterized in that: The top surface of the cast-in-place segment concrete is subjected to chiseling treatment.
4. The column-to-girder joint connection structure according to claim 1, characterized in that: The prefabricated UHPC cap beam comprises cap beam post-cast segment concrete which is located in the area outside the pier beam solidified cast-in-place segment concrete.
5. The column-to-girder joint connection structure according to claim 4, wherein: The pier beam solidified cast-in-place segment concrete is subjected to chiseling treatment corresponding to the side surface of the cap beam post-cast segment concrete.
6. The column-to-girder joint connection structure according to claim 1, characterized in that: The cap beam prestressed steel strand corrugated pipes are provided with prestressed steel strands.