Precast type expansion joint using Elastic asphalt and construction method of expansion joint part using thereof

摘要

The present invention relates to an elastic asphalt precast expansion joint, and to an expansion joint method of a bridge or structure using the same, the purpose of which is easy to construct by the precasting method, and uniform behavior by the composite action of the elastic asphalt and the equal behavior expansion joint. It is to provide an elastic asphalt precast expansion joint that can induce expansion and contraction, and an expansion joint method of a bridge or structure using the same. The present invention includes a lower precast telescopic material inserted into a joint groove of a structure and fixedly installed on the slab, and an upper precast telescopic material integrally heated and bonded to the upper surface of the lower precast telescopic material to be located in the joint groove, The lower precast elastic material includes a pair of reinforcing supports fixedly installed on the slab, and an elastic elastic material that is connected to both sides of the pair of reinforcing supports to be integrally elastic, and the elastic elastic material is at both ends of the pair of reinforcing supports. It includes an elastic block that is integrally molded with an equally-moving elastic material and a pair of reinforcing supports so that the equally-moving elastic material and the uniform-moving elastic material are located inside, and the upper precast elastic material is, the lower precast elasticity It is made of an elastic block molded to be integrally bonded to the upper surface of the elastic elastic material of the material, and it is designed to induce uniform expansion and contraction by the complex elastic action of the upper/lower precast elastic material.