大型煤气柜风振响应与抗风性能分析  

Analysis of Wind-Induced Displacement Response and Wind-Resistant Capability of Huge Gas Tank

作　　者：邹良浩[1,2] 梁枢果[1,2] 徐金虎[1,2] 李茂新[3] 王万里[3] 张号军[3] 

机构地区：[1]武汉大学土木建筑工程学院,武汉430072 [2]武汉大学岩土与结构工程安全湖北省重点实验室,武汉430072 [3]中冶南方工程技术有限公司,武汉430223

出　　处：《振动．测试与诊断》2011年第1期41-44,127,共4页Journal of Vibration,Measurement & Diagnosis

基　　金：中国博士后科研基金资助项目(编号:20080440957)

摘　　要：基于刚性模型表面测压风洞试验,得到大型煤气柜表面的风荷载时程,经数据处理得到结构的平均风荷载与频域动力风荷载数值模型。采用有限元方法计算了煤气柜结构的动力特性,研究了煤气柜柜体内外气体的压力差对结构动力特性的影响。采用随机振动理论,计算得到大型煤气柜结构的风致位移响应,分析了柜体内外气体压力差对结构风致响应的影响以及煤气柜结构在风荷载作用下的变形,为结构设计师进行结构抗风设计提供了参考。Based on wind tunnel tests of rigid model,the surface wind pressure time series of a huge gas tank were obtained,and the mean wind load and the dynamic wind load model of the building in frequency domain was established by processing the data.The dynamic characteristics of gas tank were calculated by using the finite element method and the influence of the internal gas pressure on the dynamic characteristics was analyzed.Furthermore,the wind-induced displacement responses were evaluated based on random vibration theory.In the mean time,the influence of the internal gas pressure on the dynamic displacement responses, as well as the deformation of the gas tank were analyzed.The results provide references for wind-resistant design.

关 键 词：储气结构 风效应 风洞试验 风致响应 

分 类 号：U448.25[建筑科学—桥梁与隧道工程]