Reinforced concrete shear block for piers for increased seismic resistance and lateral displacement of bridge integral bridges

摘要

The present invention relates to the structure of reinforced concrete shear blocks for bridge piers for increasing the seismic resistance and confining lateral displacement of multi-span integral bridges using two or more PC beams. Fixed end bearings are used, and one or more lateral fixed end bearings (ie, axial displacement allowance, orthogonal displacement fixation) are used to restrain the temperature displacement of the bridge in the transverse direction. Has been used. However, in the integral bridge bridge, the molds on both sides are embedded in the bridge and fixed, and the binding force is very unnecessary for the displacement of the bridge direction and the perpendicular direction of the bridge. This allows the use of bi-directional movable bearings (ie axial and axial displacement allowable), which are excellent in cost and construction and very easy to install. In the condition that the stability of the structural analysis is sufficiently secured, in particular, the horizontal horizontal load is provided by installing reinforced concrete shear blocks with sufficient strength on the top of the bridge coping in order to properly transfer the horizontal force acting on the bridge to other members. Sufficient stability can be ensured and the mold can be prevented from falling off during seismic load.;The structure of the reinforced concrete shear block for bridge piers for increasing the seismic resistance and restraining lateral displacement of the multi-span integral bridge using the PC beam of the present invention is provided with a bidirectional bearing before and after the PC beam mold is mounted on the top of the bridge; In order to fix the seismic horizontal force and lateral displacement that can occur in the direction perpendicular to the axial axis by using the bi-directional bearing, the shear block is completed by using reinforcement on the upper surface of the pier coping. Because it does not require precise construction and high cost, the construction is simpler and the structure effectively reduces the installation cost and construction period of the bearing.