考虑上、下部结构组合阻尼比影响的单层网壳分析
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摘要
以单层球面网壳上、下部整体结构为研究对象,系统地研究了网壳屋盖结构与下部支承体系共同工作问题,针对钢网壳及混凝土支承体系这类组合结构,采用不同材料组合结构阻尼比的实用计算公式,分别按照固定铰支座模型、整体分析模型对多个网壳结构计算对比,结果表明,考虑组合结构阻尼比并按上、下部整体结构模型进行计算更符合工程实际。
The question on harmonious work between the roof and the brace of the shell is discussed,which is aimed at the built-up structure between the steel shell and the concrete bracing system,the applied calculating expressions about the damping ratio of the built-up structure made up of the different material is put forward in.Comparing the results which are achieved by calculating the joint model,the whole model of several shells,figure out the result achieved in joint model is evidently different from fact.
引文
[1]沈世钊.大跨空间结构理论研究和工程实践[J].中国工程科学,2001,3(3):34-41.
    [2]Shibata and Meter.A sozen substitute structure method for seismicdesign in R.C,ASCE,1976:102-103.
    [3]曹资,张毅刚,等.各类常用网壳结构的地震反应规律[R].国家自然科学基金重大项目专题年度研究报告,1999.

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