摘要
目的通过对高举架立式圆筒型储液容器基础隔震数值分析,探究高举架储罐基础隔震的可行性.方法依据ACI简化力学模型提出分散支承质量简化力学模型的方法,并通过在其底部植入隔震层,建立基础隔震简化力学模型并推导其运动控制方程,采用数值方法对比分析了不同条件下地震动响应.结果 ACI简化法与分散支承质量简化法计算结果相近,说明笔者提出的分散支承质量简化力学模型是可行的;基础隔震能有效控制高举架立式圆筒型储液容器地震动响应;隔震周期和隔震层阻尼比越大,基础隔震减震效率越高.结论建议基础隔震设计时需根据工程实际情况选择最佳隔震层参数.
Through the numerical analysis of the base isolation elevated vertical cylinder storage tanks,the feasibility of base isolation is explored. According to the simplified mechanical model of ACI,the method of simplifying the mechanical model of dispersed bearing mass is proposed. By installing the isolation layer at the bottom the simplified mechanical model of the base isolation is established and the motion control equation is derived. The numerical method is used to compare and analyze the ground motion under different conditions. The calculation results of ACI simplification method and dispersed bearing mass simplification method are similar,which shows that the simplified mechanical model of dispersed support is feasible. The base isolation can effectively control the ground motion response of the vertical cylindrical storage tank. The longer isolation period and the larger damping ratio,the higher the efficiency of base isolation. It is suggested that the optimum isolation layer parameters should be selected according to the actual engineering condi-tions.
作者
崔利富
吕远
孙建刚
王振
CUI Lifu;Lü Yuan;SUN Jiangang;WANG Zhen(College of Civil Engineering,Dalian Nationalities University,Dalian,China,116650;Transportation Equipment and Ocean Engineering College,Dalian Maritime University,Dalian,China,116026)
出处
《沈阳建筑大学学报（自然科学版）》
CAS
CSCD
北大核心
2019年第1期49-57,共9页
Journal of Shenyang Jianzhu University：Natural Science
基金
国家自然科学基金项目(51478090
51878124)
辽宁省自然科学基金项目(20180550073)
关键词
高举架
立式圆筒型储罐
力学模型
基础隔震
elevated
vertical cylinder storage tanks
mechanical model
base isolation
作者简介
崔利富(1982—),男,博士,主要从事防灾减灾工程及防护工程方面研究.
