非岩性地基条件下核岛厂房拟三维地震分析  

Seismic analysis of pseudo three dimensional of nuclear island plant under non-lithology foundation condition

作　　者：尹训强[1] 薛志强[1] 王桂萱[1] Yin Xunqiang Xue Zhiqiang Wang Guixuan(Civil Engineering R＆D Center, Dalian University, Dalian 116622, Liaoning China)

机构地区：[1]大连大学土木工程技术研究与开发中心,辽宁大连116622

出　　处：《华中科技大学学报（自然科学版）》2016年第9期111-116,共6页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家重大科技专项基金资助项目(2011ZX06002-10);辽宁省教育厅资助项目(l2014498)

摘　　要：以AP1000核岛厂房结构为研究对象,提出了等刚度-质量简化原则,并基于ANSYS平台实现了复杂核岛结构的等效简化以及核岛振动特性的合理性验证;进而以SuperFLUSH程序为计算平台,通过引入黏性人工边界模拟无限地基辐射阻尼效应,采用等效线性法描述近场地基非线性特征,建立了非岩性地基条件下的核岛厂房结构拟三维地震响应分析模型;最后通过与SASSI程序真三维进行对比研究,验证了所建立拟三维计算模型具有较好的有效性及实用性.Taking AP1000 nuclear island plant structure as research subject,the principle of the sim-plification that the mass and stiffness of models should be equivalent was presented and the equivalent model of complex nuclear island plant structure based on ANSYS was built.The vibration characteris-tics of the nuclear island was also proved to be reasonable.Furthermore,taking SuperFLUSH pro-gram as computing platform,the pseudo-three-dimensional seismic model of nuclear island plant struc-ture based on non-lithology foundation was built.The infinite foundation damping effect was simula-ted by using artificial viscous boundary and the nonlinear characteristic of near field base was simula-ted by equivalent linear method.Finally,comparing with the results computed by SASSI,it verifies that the pseudo-three-dimensional model is efficient and practical.

关 键 词：非岩性地基 核岛厂房 拟三维 地震响应 SuperFLUSH 黏弹性边界 无限地基阻尼效应 

分 类 号：TU318[建筑科学—结构工程]