Jacking force-adjustable prestressed resilient support structure and construction method thereof

Abstract

A prestressing force elastic support structure convenient for regulating the prestressing force, is characterized in that a rigidization strip is casted at the bridge bearing point position to be reinforced, and a support pier stud is casted beneath the rigidization strip; the rigidization strip is in fixed connection with the support pier stud through a prestressing force elastic steel bearing; two spring steel sheets have a certain radian and the arc tops are relative to each other, which are arranged between the upper steel plate and the lower steel plate, the spring steel sheets and the common edge of the upper steel plate and the lower steel plate are welded and fastened on a locating steel plate, the upper steel plate and the lower steel plate are connected through a long bolt, a prestressing force is added to the spring steel sheet as a deformation margin, thereby the object of regulating the prestressing force can be achieved by adjusting the bolt. The invention has beneficial technique effects of simple construction, reliable structure and adjustable prestressing force.

Description

technical field [0001] The invention relates to a bridge reinforcement technology, in particular to a prestressed elastic support structure which is convenient for adjusting the prejacking force and a construction method thereof. Background technique [0002] As an important part of the traffic artery, bridges play an extremely important role in national economic construction and social development. Like the human body, bridges often suffer from pathological changes, and it is extremely important to adopt reasonable reinforcement methods to rectify them; it is important to add supports to strengthen the bridge to change the stress system of the structure, thereby increasing the bearing capacity of the whole bridge. One of the reinforcement methods; and one of the key technologies of this reinforcement method is to correctly handle the contact between the support and the original bridge, so as to achieve the purpose of reinforcement and protect people's lives and properties. ...

AI Technical Summary

Problems solved by technology

[0003] At present, there are two main methods to deal with the problem of adding support and strengthening the bridge contact: one is to restrict vehicle traffic, chisel out the bridge deck pavement, reduce the dead load effect, add support, and re-build the bridge deck system to achieve support. Close contact with the original bridge; the second is to restrict the passage of vehicles, and place the support between the support and the original bridge by applying jacks simultaneously; these two methods are relatively troublesome in construction, and are not compatible with the seasonal environment of construction. The relationship is relatively large, the support reaction force is difficult to control, and the original bridge is prone to new diseases

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