A NEW SPATIAL STRUCTURES:CABLE SUPPORTED ARCH-DOME STRUCTURES
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摘要: 在总结拱支网壳结构力学特点的基础上,将张拉整体的概念引入拱支网壳,提出弦支拱壳结构,较好地解决了拱支网壳结构支座反力较大,下部支承结构设计较为困难的问题。结合算例分析弦支拱壳结构的静力性能、稳定性能,得出张拉整体的引入很大程度上能减小拱支网壳结构的支座反力,且较大提高拱支网壳结构的稳定性能;对比分析弦支拱壳和拱支网壳结构的基本动力特性,得到刚度和自振频率等特性。Abstract: Based on summarizing the mechanical characteristics of arch-supported reticulated shell structures,the concept of tensigrity system is introduced into the arch-supported reticulated shell,which as solved the problems of large reaction of the support in an arch-supported reticulated shell,as well as the difficulty in the design of a bearing structure. It is also analyzed the static behavior and stability of a cable supported arch-dome structure combined with an actual project. The introduction of tensigrity can decrease greatly the support reaction of the arch-supported reticulated shell structure and also inpove its stability. The basic dynamic characteristics of the two types of structures are compared,with which stiffness and natural frequency of vibration are got.
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