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(哈爾濱工業(yè)大學(xué) 150090)
【提要】 采用有限元分析軟件ANSYS對一種新型索拱吊掛輕型組合樓蓋結(jié)構(gòu)體系進(jìn)行了靜動力分析，并采用現(xiàn)場實測與計算機仿真分析相結(jié)合的方法對索拱吊掛樓蓋的新型工藝進(jìn)行了分析。結(jié)果表明，結(jié)構(gòu)體系的基頻較高，模態(tài)不密集；撐桿與拱型桁架梁連接處截面是索拱主要的控制截面；施工順序影響整體結(jié)構(gòu)的受力狀態(tài)；張拉預(yù)應(yīng)力索可以減小拱梁在使用階段的單元應(yīng)力，但在施工階段，張拉預(yù)應(yīng)力索卻增加了拱梁的壓應(yīng)力，對結(jié)構(gòu)產(chǎn)生了不利影響。
【關(guān)鍵詞】 索拱體系 組合樓蓋 吊掛結(jié)構(gòu) 張拉控制
Study on Static and Dynamic Performance  and Construction of Cablearch Suspending
Lightweight Combined Floor /Gao Weicheng,Liu Kai,Liu Zongren(Harbin Institute of Technology,Harbin 150090,China)Abstract:The  finite element analysis software ANSYS is used to analyze the static and dynamic performance of a kind of newtype space structure system of cablearch suspending lightweight combined floor,and the method of survey on site combining together with computer emulation is adopted.The results show that the basic frequency is higher and the models are not dense;the major control section of the cablearch structure is the connection of brace strut and arch beam; the construction order influences stress of whole structure, when cables are stretched;cables tensioned may minish elements stress of archbeams in working phase,but it increases the press stress in construction phase which brings disadvantage to the structure.
Keywords:cablearch systems; combined floor; suspended structure; controlled tension