一種新型預應力索拱結(jié)構(gòu)設(shè)計及工程應用
盛平，柯長華，甄偉，徐福江
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(北京市建筑設(shè)計研究院，100045)［提要］結(jié)合工程實例，研究了索拱結(jié)構(gòu)選型和有限元分析的方法，分析了支座剛度、高跨比、拱身截面、索截面等各項參數(shù)對其受力性能的影響。研究了預應力索拱結(jié)構(gòu)平面外和平面內(nèi)的穩(wěn)定性能。結(jié)合工程實例介紹了索拱結(jié)構(gòu)的工程應用，并給出了設(shè)計建議。［關(guān)鍵詞］預應力索拱結(jié)構(gòu)；拱；拉索；選型；穩(wěn)定性能Design and Applications of Prestressed Cable arc Structures/Sheng Ping, Ke Changhua, Zhen Wei, Xu Fujiang (Beijing Institute of Architectural Design, Beijing 100045, China)Abstract: The characteristics of prestressed cable arc structures are introduced. The influences of different parameters such as the supporting stiffness, ratio of height to span, arc section and cable section on the performance of cable arc are analyzed. The buckling performance of prestressed cable arc structures are studied by elastoplastic method. The application of prestressed cable-arc structures is listed, and advices are proposed for design.Keywords: prestressed cable-arc structures; arc; cable; optimized form; buckling performance
