Assembly type prefabricated plate splicing seam connecting assembly and joint structure thereof

Abstract

The invention discloses an assembly type prefabricated slab splicing seam connecting assembly which comprises a left flange steel plate and a right flange steel plate which are vertically inserted into splicing faces of two prefabricated plates along the opposite splicing faces of the two prefabricated plates correspondingly, and a middle connecting steel plate horizontally connected with the left flange steel plate and the right flange steel plate. Direct on-site splicing can be achieved, connection is firm, the shear resistance of the splicing seam is ensured, and the connecting assembly has the advantages of being simple, strengthening the overall performance of the bridge, being short in construction period, avoiding on-site wet workload and the like.

Description

technical field [0001] The invention relates to the technical field of engineering construction, in particular to an assembled prefabricated panel joint joint assembly for road bridges and its joint structure. Background technique [0002] At present, the prefabricated reinforced concrete structure is one of the important directions of the development of my country's building structure. Various prefabricated components are processed in the factory in advance and transported to the construction site for assembly and assembly, which is conducive to improving and ensuring the quality of the project. It is beneficial to my country's construction The development of industrialization improves production efficiency, saves energy, develops green and environmentally friendly buildings, and is conducive to improving and ensuring project quality. As an important part of bridge construction, prefabricated bridge deck has significant advantages in terms of economy, constructability, and c...

AI Technical Summary

Problems solved by technology

[0004] One is to adopt the wet joint method. The existing concrete prefabricated slabs are generally formed into a whole by lapping or welding steel bars on the lapped bridge slabs, and then pass the post-cast concrete to make the prefabricated slabs a whole after it hardens. This method still requires lapping or welding of steel bars and concrete at the joints, resulting in a large wet workload on site and a long concrete curing time, which is contrary to the original intention of prefabricated construction, time-consuming and labor-intensive, and uncertain due to human factors The stability directly affects the quality of the project, and the reserved joint width is large, which makes the consumption of materials large and increases the construction cost

[0005] The second is to connect the spliced ​​prefabricated panels with concave-convex joints, and the joints are connected by applying epoxy resin. However, the mosaic butt joint positioning method with concave-convex grooves reserved makes the hoisting and positioning complicated, and the glue setting time is limited. The difficulty of the glue process, with the passage of time, under the long-term load, the epoxy resin will gradually age and be damaged, lose the anti-leakage effect, and affect the durability of the structure

[0006] To sum up, the existing bridge slab connection joint treatment has the following disadvantages: First, the construction period is long, and the laying process is complicated and cumbersome, which is not conducive to the application of emergency engineering; the waste of materials is large, which increases the construction cost; Construction waste, not conducive to environmental protection, can not be reused

The second is that in construction operations, multiple prefabricated panels are overlapped side by side to form a whole. The seismic effect of such simple splicing is poor. Especially the prefabricated panels used for roads and bridges are subjected to large and concentrated forces. Failure to do so will cause serious safety accidents. In addition, the simple assembly of prefabricated panels will leave gaps at the joints. Various technical measures must be taken for anti-leakage treatment, and the overall mechanical performance is poor.

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