pcss shear connection structure

Abstract

A PCSS shear force coupled construction, comprising a steel structure (2) and an assembly-type prefabricated concrete bridge road plate. The prefabricated concrete bridge road plate comprises a concrete bridge road plate body (1) and a shear transferring structure (3) integrally cast with the concrete bridge road plate body (1) via a shear connector, and is fixedly mounted on the steel structure (2) via the shear transferring structure (3). Directly mounting the assembly-type prefabricated concrete bridge road plate on the steel structure (2) during the construction process facilitates the control of the construction process, significantly reduces the construction cycle, and exposes the coupling part of a composite beam, thus facilitating daily monitoring and maintenance, requiring less time out of service during maintenance and repair, and ensuring normal use of a bridge.

Description

technical field [0001] The invention belongs to the field of building structures and bridge road engineering, in particular to a PCSS shear force coupled structure. Background technique [0002] The steel-concrete composite structure has obvious advantages in terms of material strength, convenient and fast construction, reliable structural performance, and low energy consumption, so it has become more and more the development trend of bridge structures; due to the combination of steel structure and concrete bridge slab The materials and characteristics are different, so how to connect the two easily and quickly with long-term reliable performance is a problem that the engineering community has been exploring and solving. [0003] In the prior art, more shear keys are arranged on the steel structure of the joint surface, and a steel-concrete composite bridge structure is formed through the cast-in-place concrete bridge slab; The prefabricated bridge slab components are made ...

AI Technical Summary

Problems solved by technology

Therefore, the process is complicated, the construction period is long, and the uncertainty of the quality of cast-in-place concrete will lead to hidden dangers in the long-term reliability of the structure; especially, there may be two hidden problems in the shear key that plays a key role in the force transmission in the concrete: one is the shear force The concrete around the key will obviously degrade its force transmission performance due to shrinkage and creep under constraint conditions or due to long-term impact, fatigue load, or its own defects such as non-compactness. Second, the failure of the welded part of the shear key and the steel beam will cause The structural performance of steel-concrete composite bridges degrades to the point of obvious defects. These problems are hidden in the concrete and are difficult to check, and cannot be maintained and replaced, resulting in hidden safety hazards that are difficult to check and maintain.

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