【摘要】 弦支穹顶结构是在克服了单层网壳和索穹顶结构的缺点,继承了其优点的基础上发展起来的,并被广泛认可和应用的一种新型预应力大跨度结构体系。在分析提出背景和力学原理的基础上,简述了国内外对弦支穹顶结构形态分析、优化设计、静动力性能和施工控制理论等方面的研究现状,并对其各种研究方法的特点进行了分析总结;介绍了天保中心大堂屋盖、2008奥运会羽毛球馆、济南奥体中心体育馆等典型弦支穹顶工程应用;提出了温度效应研究、考虑索撑节点滑移摩擦的动力反应分析、索力的测试及其补偿技术、超大跨度弦支穹顶设计理论等5项亟待解决关键课题,为进一步研究其结构性能和施工控制值理论创造了一定的条件和提供资料参考。更多还原

【Abstract】 After overcoming the disadvantages and keeping the advantages of single layer latticed shell and cable dome,the suspendome structures are widely accepted and applied in engineering practice as a new kind of pre-stressed long-span spatial structures.Based on the analysis of the backgorund and mechanical principle,the state of the art of suspendomes are reviewed,including form-finding analysis,optimization design,static and dynamic behaviors,construction control theory etc.,and the characteristics of possible research methods were also analyed.The overviews of some typical projects,such as roof structures of Tianbao Center,the badminton gymnasium for 2008 Olympic Games,the gymnasium of Jinan city and so on.Five key problems needed to be solved are presented in this paper:dynamic analysis considering the friction between cable and joints,the temperture effects,testing and compensation technique of the cable force,design theory of large long-span suspendome etc.,which will be an important refernce for later design and research of supendome structures.更多还原