【摘要】 对4片1:2缩尺比例的L形截面RC短肢剪力墙进行伪静力试验研究与ANSYS有限元模拟分析,研究HPFL加固一次受力、二次受力、二次受力且有震损3种受力形式下RC短肢剪力墙的抗震性能。先对各试件试验结果进行比较分析,研究不同受力形式下加固效果的异同点及其产生原因,再将试验结果与数值模拟结果进行比较分析。研究结果表明:HPFL加固的不同受力形式RC短肢剪力墙的抗震承载力、延性、耗能能力都得到了明显改善,且一次受力加固墙的改善效果最明显,二次受力、二次受力且有震损的加固墙的改善效果依次减弱,这是由于加固层应力、应变滞后原构件的程度依次增大所致,即是由加固层强度的利用率依次降低导致的。更多还原

【Abstract】 PA pseudo static test, as well as an ANSYS finite element simulation analysis, has been carried out of four RC short leg shear walls on 1:2 scale ratio, followed by a study of the aseismic performance of the RC short leg shear walls under three loading forms including HPFL reinforcement with the primary loading, secondary loading, and secondary loading with the earthquake damage. First, a comparison and an analysis have been made of the test results of each specimen, followed by a study of the similarities and differences of reinforcement effects under different loading modes, as well as their causes. Then a comparison has been made between the test results and numerical simulation results. The results show that the bearing capacity, ductility and energy dissipation capacity have been significantly improved of the HPFL reinforcement under different seismic forces form RC short shear walls, with an obvious improved effect for the reinforcement walls, and a weakened tendency for the secondary stress with an earthquake effect for the reinforcement walls, due to the increase of the degree of stress and strain lag in the reinforcement, which is caused by the reduction of the utilization ratio of the strength of the reinforced layer in turn.更多还原