框架式帐篷结构抗风可靠性分析及评价方法研究

发布时间：2018-08-25 10:09

【摘要】：框架式帐篷结构质量轻、拆装方便，已在军事和民用工程中得到广泛应用。帐篷结构使用年限和使用功能与常规建筑结构有很大不同。同时，其刚度小，对风荷载作用比较敏感。目前，我国相关规范没有就该类结构的评价方法进行规定，国外对该类结构可靠性评价方法的研究也尚处于起步阶段。本文基于框架式帐篷结构足尺静力试验研究结果，分析了框架式帐篷结构抗风可靠性，并就框架式帐篷结构构件安全性等级划分原则和可靠度评价方法进行了探讨，，可为此类帐篷结构的设计、应用和检验提供依据。论文首先基于框架式帐篷结构足尺静力加载试验结果，分析了在短轴方向吹风时，结构处于有风绳和无风绳两种状态下的内力和位移变化规律；进而编写了截尾JC法计算程序，分析了框架式帐篷结构构件的可靠性；并针对帐篷结构服役期较短的特点，对框架式帐篷结构构件承载能力极限状态安全性等级分级原则进行了讨论。其次，依据框架式帐篷结构试验分析结果，初步建立了框架式帐篷结构体系失效准则及其计算模式；进而展开了风绳失效概率和帐篷骨架失效概率研究，并采用相关的体系可靠度计算方法对框架式帐篷结构在不同等级荷载作用时的体系可靠性进行了分析。最后，借鉴已有结构可靠性鉴定标准相关思想，并考虑框架式帐篷结构自身受力性能和使用功能的特殊性，探讨了框架式帐篷结构可靠性评价方法。
[Abstract]:The frame tent has been widely used in military and civil engineering because of its light structure and convenient disassembly. The service life and function of tent structure are very different from that of conventional building structure. At the same time, its stiffness is small and sensitive to wind load. At present, the evaluation method of this kind of structure has not been stipulated in the relevant codes of our country, and the research on reliability evaluation method of this kind of structure in foreign countries is still in its infancy. Based on the results of full scale static test of frame tent structure, this paper analyzes the wind resistance reliability of frame tent structure, and discusses the principle of safety grade classification and reliability evaluation method of frame tent structure component. It can provide basis for the design, application and inspection of this kind of tent structure. Based on the results of full-scale static loading test of frame tent structure, the internal force and displacement of the structure under the condition of wind-rope and no-wind rope are analyzed, and the calculation program of truncated JC method is compiled. This paper analyzes the reliability of the frame tent structure components and discusses the principle of the safety grade classification for the ultimate state of the carrying capacity of the tent structure members in view of the short service period of the tent structure. Secondly, according to the experimental results of frame tent structure, the failure criterion and calculation model of frame tent structure system are established, and the wind rope failure probability and tent skeleton failure probability are studied. The reliability of the frame tent structure under different loads is analyzed by using the system reliability calculation method. Finally, the reliability evaluation method of frame tent structure is discussed by referring to the related thought of reliability evaluation standard of frame tent structure and considering the particularity of its own mechanical performance and use function.
【学位授予单位】：西安建筑科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU352.2

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