884aa四虎影成人精品,99久久国产综合精品女图图等你,97在线观看永久免费视频,久久精品国产精品亚洲38,ⅵdeodesetv性欧美

（1 北京市建筑設(shè)計(jì)研究院， 北京 100045；2 東南大學(xué)土木工程學(xué)院， 南京 210096）

［摘要］研究了廣州新客站站房大跨度預(yù)應(yīng)力空間結(jié)構(gòu)的預(yù)應(yīng)力控制分析的影響矩陣迭代法，即已知結(jié)構(gòu)在既定強(qiáng)度、剛度目標(biāo)狀態(tài)下的位移、索力等，反求結(jié)構(gòu)的初始狀態(tài)。以此為基礎(chǔ)，對(duì)廣州新客站屋蓋結(jié)構(gòu)的單層索殼、三向張弦梁、索拱結(jié)構(gòu)選定了合理的預(yù)應(yīng)力控制目標(biāo)，分析得到了各區(qū)域結(jié)構(gòu)的預(yù)應(yīng)力控制值和零狀態(tài)控制幾何。對(duì)索拱結(jié)構(gòu)在胎架張拉階段和高空張拉階段的預(yù)應(yīng)力進(jìn)行了控制，保證了索拱的支座反力處于最小的狀態(tài)。進(jìn)一步分析表明，預(yù)應(yīng)力取值合理，結(jié)構(gòu)處于良好的工作狀態(tài)。

［關(guān)鍵詞］半剛性結(jié)構(gòu);預(yù)應(yīng)力控制;零狀態(tài);初狀態(tài)

Study on prestress controlling of a long-span cable-arc spatial structure

Zhen Wei^１, Feng Jian^２, Sheng Ping^１(1 Beijing Institute of Architectural Design, Beijing 100045, China;2 School of Civil Engineering,Southeast University,Nanjing 210096,China)

Abstract:The prestress spatial structure system of New Guangzhou Railway Station is introduced. The influence factor matrix iterative method of prestress control on long-span prestress spatial system is studied, which can find the initial state of prestress structure through the target state such as displacement and stress, etc. Optimized prestress control target is chosen on the cable-arc structure, cable-shell structure and tri-directional truss-string spatial structure. The shape of unstrained state and prestress of cable are obtained. The prestress control on the construction of the cable-arc structure insure the minimization of the support reaction. It is shown that the prestress is adequate and the structure is in good bearing performance.

Keywords: semi-rigid structure; prestress control; unstrained state; initial state

作者簡(jiǎn)介：甄偉，碩士，高級(jí)工程師，Email：zhenw@biad.com.cn。

參考文獻(xiàn)

［1］盛平，柯長(zhǎng)華，等.一種新型預(yù)應(yīng)力索拱結(jié)構(gòu)設(shè)計(jì)及工程應(yīng)用［Ｊ］.建筑結(jié)構(gòu)，2008，38(1).

［2］盛平，柯長(zhǎng)華，甄偉，等. 廣州新客站結(jié)構(gòu)總體設(shè)計(jì)［Ｊ］. 建筑結(jié)構(gòu)，2009，39（12）.

［3］甄偉，盛平，柯長(zhǎng)華，等. 廣州新客站主站房屋蓋鋼結(jié)構(gòu)設(shè)計(jì)［Ｊ］. 建筑結(jié)構(gòu)，2009，39（12）.

［4］鄧華，董石麟. 拉索預(yù)應(yīng)力空間網(wǎng)格結(jié)構(gòu)全過(guò)程設(shè)計(jì)的分析方法［Ｊ］. 建筑結(jié)構(gòu)學(xué)報(bào)，1999，20(4).

［5］沈世釗，等. 懸索結(jié)構(gòu)設(shè)計(jì)［Ｍ］. 北京:中國(guó)建筑工業(yè)出版社,1997.

［6］王國(guó)周, 瞿履謙. 鋼結(jié)構(gòu)——原理與設(shè)計(jì)［M］. 北京: 清華大學(xué)出版社, 1993.