考虑SSI效应的核电厂房地基抗震适应性分析模型及应用  

Analysis Model and Its Application of the Seismic Adaptability of Nuclear Power Plant Structure Based on SSI Effect

作　　者：尹训强[1] 潘奇[1] 王桂萱[1] YIN Xunqiang PAN Qi WANG Guixuan(R＆D Center of the Civil Engineering, Dalian University, Dalian 116622, 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：《防灾减灾工程学报》2016年第4期609-616,共8页Journal of Disaster Prevention and Mitigation Engineering

基　　金：辽宁省教育厅一般项目(12014498);国家自然科学基金项目(12014498;51008040);中央高校基本科研业务费专项资金项目(DUT13LK16);国家重大科技专项"cap1400安全审评技术与独立验证试验"项目(2011ZX06002-10)资助

摘　　要：通过有限元框架内的阻尼溶剂抽取法(DSEM),考虑无限地基辐射阻尼影响,并结合交界面相互作用力平衡机制及位移协调实现核电厂房与无限地基子结构的耦合,从而建立核电厂房地基抗震适应性分析时域模型。为提高其实用性,基于ANSYS平台,运用二次开发工具UPFs、APDL及UIDL,实现了DSEM关键技术、分析流程控制以及可视化操作,再通用有限元软件嵌入了所开发模型。通过数值算例分析了不同频率简谐波对精度与效率的影响,提出了适用工程应用的参数范围。最后开展了某百万千瓦级压水堆厂房地基抗震适应性分析,计算结果表现出良好的可靠性和工程实用性。In this paper,the Damping Solvent Extraction Method（DSEM）in the finite element framework is proposed to consider the influence of infinite foundation radiation damping and the coupling of the nuclear power plant and the infinite foundation substructure is realized by combining the interaction force balance mechanism and displacement coordination.As a result,a time domain model for the seismic analysis of the foundation of the nuclear power plant is established.In order to improve its practicability,the two development tools UPFs,APDL and UIDL are used to achieve the DSEM key technologies.Through analysis of process control and visual operation the developed model is embedded in the general finite element software ANSYS.And then,the effect of different frequency harmonic waves on the accuracy and efficiency are analysed by the numerical example.The suitable parameter range of engineering application is sugested.Finally,the seismic adaptability analysis of the foundation of a million kilowatt pressurized water reactor is carried out.The results show high reliability and practicability.

关 键 词：核电厂 结构地基相互作用 阻尼溶剂抽取法 ANSYS二次开发 

分 类 号：TU435[建筑科学—岩土工程]