摘要
反力梁是土木工程试验中的主要反力装置。当反力梁与试件的刚度比较小时,反力梁产生的变形与试件相比不可忽略。这种情况下,会对试验结果产生较大影响,特别是对拟动力和混合试验需要位移在线更新的试验影响更大。然而,关于反力梁变形的影响和补偿方法鲜有详细报道。为此,该文通过理论分析讨论了反力梁变形对抗震试验各参数的影响规律,建立了加载过程中对反力梁变形的在线补偿方法,并通过试验进行了验证。
Reaction beam is the main reaction device in civil engineering test.When the stiffness ratio of the reaction beam to the specimen is small,the deformation of reaction beam cannot be neglected compared with that of the specimen.In this case,it has a great effect on the experimental results,especially on the pseudo-dynamic and hybrid testing method,which need to update the displacement online.However,there are few reports on the influence and compensation method of the deformation generated by the reaction beam.This paper discusses the influence of the reaction beam deformation on the tested seismic parameters through theoretical analysis.Furthermore,an online compensation method for the deformation of reaction beam during loading is established and verified by experiments.
作者
胡云强
唐贞云
郭云峰
HU Yun-qiang;TANG Zhen-yun;GUO Yun-feng(The Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education,Beijing University of Technology,Beijing 100124,China;Beijing Baoheyuan Photoelectric Equipment co.LTD,Beijing 102609,China)
出处
《工程力学》
EI
CSCD
北大核心
2020年第S01期104-110,120,共8页
Engineering Mechanics
基金
国家自然科学基金青年科学基金项目(51608016,51978016)。
关键词
抗震试验
试验误差
滞回曲线
反力梁变形
误差补偿
seismic test
test error
hysteresis curve
reaction beam deformation
error compensation
