摘要
为研究Kiewitt型多整体自应力模态新型体系,在理论分析的基础上,设计加工了直径为5.0 m的Kiewitt型索穹顶结构模型,提出了支承平台、可调索杆、连接节点等的加工制作新方案,考察了当张拉各构件到设计长度时体系的初始预应力分布,以及模型在满跨、半跨和1/8跨等多种荷载工况下的静力响应.结果表明,当所有构件都张拉到设计长度时,Kiewitt型索穹顶结构的初始预应力分布达到理论计算值,在多种荷载工况下的静力响应和理论分析结果基本吻合,验证了理论分析的正确性和模型设计的有效性.
A Kiewitt dome model structural behavior of domes with with the diameter of 5.0 m was multi overall self stress modes on designed and made to investigate the the basis of theoretical analysis. New schemes of boundary compression ring, cables and struts with adjustable length and connection nodes were designed. The initial prestress distribution and the responses of the model under full-span load, half-span load and 1/8-span load were investigated. Experimental results indicated that the Kiewitt dome with multi overall selfstress modes achieved the designed initial prestress distribution when every element was tensioned to the designed length. The consistency of the model responses under different loads with the computational results proved the correctness of the theoretical analysis and the model design.
出处
《浙江大学学报（工学版）》
EI
CAS
CSCD
北大核心
2008年第2期364-368,共5页
Journal of Zhejiang University：Engineering Science
