【摘要】 子结构法拟动力试验与传统意义上的全结构法拟动力试验相比具有操作灵活、试验成本低廉的优点。本文在阐述子结构法拟动力试验的原理及特点的基础上,结合典型的试验实例论述了分离式子结构法拟动力试验和整体式子结构法拟动力试验的实施方法及试验结果。对安装软钢阻尼器的单层单跨钢框架结构,以阻尼装置作为试验子结构实施了分离式子结构法拟动力试验,为软钢阻尼器的恢复力模型确定了合理的参数;对某一地震观测用的三层钢框架结构输入该结构在历年地震观测中采集到的地震波记录实施了整体式子结构法拟动力试验,其试验结果与地震反应观测结果吻合得较好。本文研究表明,进行子结构法拟动力试验时试验子结构的合理选取是试验成功的关键,文中所述的试验方案可为工程结构的子结构法拟动力试验提供参考依据。更多还原

【Abstract】 Substructure pseudo-dynamic test is more flexible and less expensive than traditional pseudo-dynamic test. Based on the principles and features of substructure pseudo-dynamic tests,the methods and tests results of isolated and monolithic substructure pseudo-dynamic tests are introduced through typical experimental examples. Isolated substructure pseudo-dynamic tests were conducted on a single-span and one story steel frame with hysteretic dampers attached. These tests provided parameters for constructing a force model of the hysteretic dampers. Monolithic substructure pseudo-dynamic tests were conducted on a three dimensional 3-story steel frame using ground motions recorded for the same structure,and the test results are in agreement with the monitored earthquake responses. The study reveals that rational selection of the testing substructure is the key for substructure pseudo-dynamic tests.更多还原