摘要
Abstract
According to the actual demand of seismic performance of urban Bridges,the application research of high performance concrete in seismic design of municipal Bridges was carried out.The effects of different proportions of steel fiber and mineral admixtures on compressive strength,bending strength,ductility and energy dissipation capacity of HPC were investigated through laboratory mechanical properties testing and finite element numerical simulation.The results show that the compressive strength,ductility and energy dissipation of HPC with 1.8%steel fiber and 12%silica fume are increased by 35%and 48%respectively.Based on the test results,the optimal scheme of high perform-ance concrete mix ratio and anti-seismic design of municipal Bridges are proposed,which provides technical support for improving the anti-seismic performance of bridge structures.关键词
高性能混凝土/市政桥梁/抗震设计/钢纤维/力学性能Key words
High-performance concrete/Municipal bridges/Seismic design/Steel fiber/Mechanical property分类
交通工程
