并联高强钢环簧组自复位抗震阻尼器研制与试验研究

DEVELOPMENT AND EXPERIMENTAL INVESTIGATION OF SELF-CENTERING DAMPERS WITH PARALLEL HIGH STRENGTH STEEL RING SPRING GROUPS

该文在高强钢环簧自复位阻尼器的基础上,提出一种并联高强钢环簧组自复位阻尼器。通过滞回试验验证并联环簧组自复位阻尼器在多次地震工况下的抗震性能。试验结果表明,并联高强钢环簧组自复位阻尼器具有良好的自复位能力,可经历多次地震后不出现性能退化,震后无须更换。同采用单组环簧的自复位阻尼器相比,同等尺寸下可有效提高阻尼器承载力,充分利用阻尼器内部空间。环形弹簧接触表面摩擦条件不同对自复位阻尼器的性能有一定影响。该文提出的理论预测模型与试验结果较为吻合。

Based on the self-centering damper with high-strength steel ring spring,a self-centering damper with parallel high-strength steel ring spring is proposed.The seismic performance of the parallel ring spring self-centering damper under multiple seismic conditions was verified by a hysteretic test.The test results show that the parallel high-strength steel ring spring self-centering damper has good self-centering ability,and will not experience performance degradation after multi-time earthquakes.It does not need to be replaced after the earthquake.Compared with the self-centering damper with a single group of ring springs,the damper bearing capacity can be effectively improved under the same size,and the damper internal space can be fully utilized.The different frictional conditions of the annular spring contact surface have a certain influence on the performance of the self-centering damper.The theoretical prediction model proposed is in a good agreement with the experimental results.