项目名称: 大型LNG罐偶然荷载作用下力学行为及其减弱作用研究
项目编号: No.51278089
项目类型: 面上项目
立项/批准年度: 2013
项目学科: 建筑科学
项目作者: 孙建刚
作者单位: 大连民族学院
项目金额: 80万元
中文摘要: 以国内设计应用较多的特大型全容式LNG储罐为研究对象,研究发生大的瞬间冲击荷载、泄露、突发的地震激励下,结构体系的内外罐及支撑系统的力学行为。研究中考虑高、低桩基承台刚度、阻尼及土的作用。研究的问题涉及:一是结构体系的动力特性及突发地震荷载作用下动响应的简化力学分析方法、数值分析方法及试验分析方法,及减少地震响应的减震措施、机理及分析方法;二是研究LNG外罐在高速冲击荷载作用下破坏特性的数值分析方法、试验分析方法,及其减弱冲击效应的防护措施;三是研究LNG内罐泄露工况下预应力混凝土外罐由泄露引起的温度场和内力分布的数值分析方法及试验方法,及合理防护措施。
中文关键词: LNG储罐;隔震;冲击荷载;温度场;力学行为
英文摘要: With the large full containment LNG storage tank which was used nore in the domestic design as the research object, studies on the mechanical behavior of the inner and outer tank and supporting system under the occurrence of large instantaneous impact load, leakage, and sudden seismic excitations, high, low pile cap stiffness, damping and soil interaction were considered.The problems involves: The first, the dynamic characteristics of the structure and simplified mechanics analysis method, numerical analysis method and experiment analysis method under sudden seismic and the damping measures, mechanism and analysis method of reducing the seismic response; The second, research on numerical analysis methods, test analysis methods and protective measures of damage characteristics of outer tank in the high-speed impact loads; The third, study on the numerical analysis method, the test method and the reasonable protective measure of outer tank temperature and stress distribution caused by inner tank leakage.
英文关键词: LNG tank;isolation;impact load;temperature field;mechanical behavior