In-situ Test and Numerical Evaluation of Active Vibration Isolation by WIB Under Horizontal Excitations
As a promising wave barrier, wave impedance block (WIB) has been studied with many numerical techniques.However, few works explored the influence of the embedded depth of WIB on the wave impeding effect with experimental approach.In this paper, a series of in-situ tests were conducted to evaluate the actual vibration isolation effect of concrete WIB and the influence of its embedded depth on the vibration screening effects in different directions under the continuous hori zontal loadings.Moreover, the displacements of observation points were,predicted with a semi-ana lytical boundary element method (BEM) and validated by the measured records.It was revealed that a concrete WIB with a reasonable embedded depth was able to decrease the output of vibration effectively.It was also found that decreasing the embedded depth is an alternative measure for WIB to reduce the ground motion.Besides, the good consistency between the simulation and the ob served data proved the reliability of the numerical method.
wave impedance block embedded depth vibration isolation field experiment semi analytical boundary element method
G.Y.Gao N.Li S.Y.Li J.G.Zheng
Key Laboratory of Geotechnical and Underground Eng. of Ministry of Education, Tongji University, Sha Key Laboratory of Geotechnical and Underground Eng. of Ministry of Education, Tongji University, Sha China Jikan Geotechnical Institute, Xian, China
国际会议
第六届国际环境振动学术研讨会(6th International Symposium on Environmental Vibration)(ISEV2013)
上海
英文
408-417
2013-11-08（万方平台首次上网日期，不代表论文的发表时间）