东南大学学报（自然科学版）2023，Vol.53Issue(6)：973-978,6.DOI:10.3969/j.issn.1001-0505.2023.06.003
高能同步辐射光源土体动力学参数反演方法
Inversion method for soil dynamics parameters of High Energy Photon Source
摘要
Abstract
Considering that soil dynamics parameters are an important condition for evaluating site vibration re-sponse in environmental micro vibration control of large scientific devices such as High Energy Photon Source(HEPS),a method for inverting soil dynamics parameters is proposed based on constant micro vibration tes-ting.In situ experiments and comparative verification are conducted on High Energy Photon Source using con-stant micro vibration testing methods,single frequency exciter steady-state excitation methods,and hammer transient excitation methods.Experimental results show that the soil dynamic parameters obtained by the con-stant micro vibration testing method are not more than 15％different from the results of the other two meth-ods,and the phase velocity of the soil obtained by the inversion calculation is not more than 5％different from the measured phase velocity.The vibration response of soil under constant micro vibration testing is mainly based on Rayleigh waves,which has the advantages of convenient testing equipment,low requirements for co-herence of vibration response at measurement points,and no need to consider the distance between measure-ment points and vibration sources.Constant micro vibration testing can provide a more convenient and reliable analysis method for the inversion of soil dynamic parameters in large scale scientific device sites.关键词
高能同步辐射光源/土体振动/常时微动/参数反演/相速度Key words
High Energy Photon Source(HEPS)/soil vibration response/constant micro vibration/parame-ter inversion/phase velocity分类
建筑与水利引用本文复制引用
娄宇,邢云林,吕佐超,张允士..高能同步辐射光源土体动力学参数反演方法[J].东南大学学报（自然科学版）,2023,53(6):973-978,6.基金项目
国家重点研发计划资助项目(2018YFC0705701)、北京市科技计划资助项目(Z191100005619011-1). （2018YFC0705701）
