高阶单步拟动力试验算法  

HIGH ORDER SINGLE STEP ALGORITHM OF PSEUDO-DYNAMIC TESTING

作　　者：王焕定[1] 陈再现[1] 王凤来[1] 陶少华[1] 

机构地区：[1]哈尔滨工业大学土木工程学院,哈尔滨150090

出　　处：《工程力学》2008年第11期14-19,26,共7页Engineering Mechanics

基　　金：国家自然科学基金项目(50508012)

摘　　要：由于高阶单步法具有无条件稳定、优良的算法阻尼特性、无超越现象、截断误差为Δt5的特性,已成功地应用于结构地震非线性反应分析、主动半主动及智能振动控制、刚度解析表示的动力反应等分析。该文根据结构拟动力试验的特点,考虑到试验中系统所能达到的精度条件,引入等效剪切刚度的思想,提出了高阶单步拟动力试验算法。单自由度和两自由度数值模拟算例分析以及3层足尺拟动力试验结果,证实了算法的可行性和优越性。Due to the characteristics of unconditionally stable, good algorithm damping properties, no transcendental phenomenon, and At5 of truncation error, the high order single-step method had been successfully applied in nonlinear seismic response analysis and vibration controls. Based on the characteristics of the pseudo-dynamic testing and taking into account the permissible system accuracy, this paper introduces the concept of equivalent shear stiffness, and proposes the high order single-step algorithm of pseudo-dynamic testing The feasibility and advantages of this algorithm are demonstrated by a comparison between numerical simulation results of the SDOF and 2 DOF structure with those of the three-level full-scale testing.

关 键 词：高阶单步法 拟动力试验算法 等效剪切 足尺模型 刚度修正 

分 类 号：P315.9[天文地球—地震学] TU31[天文地球—固体地球物理学]