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 北京工業(yè)大學(xué)建筑工程學(xué)院， 北京 100124； 2 中國(guó)航空規(guī)劃設(shè)計(jì)研究總院有限公司， 北京 100120; 3 清華大學(xué)建筑設(shè)計(jì)研究院有限公司， 北京 100084)

［摘要］以長(zhǎng)春體育場(chǎng)屋蓋整體張拉索膜結(jié)構(gòu)為工程背景，針對(duì)施工過(guò)程中因索的下料誤差、安裝偏差等引起的結(jié)構(gòu)成形態(tài)索力和位形與設(shè)計(jì)值偏離的問(wèn)題，利用有限元軟件ANSYS研究了結(jié)構(gòu)預(yù)應(yīng)力分布及環(huán)索節(jié)點(diǎn)位形對(duì)單根脊索、谷索和環(huán)索的索長(zhǎng)誤差的敏感性；并以結(jié)構(gòu)張拉成形態(tài)索力偏差不超過(guò)設(shè)計(jì)值的5%為要求，提出了單根索的索長(zhǎng)誤差限值；最后以得到的各類索的誤差限值作為最大允許索長(zhǎng)誤差，生成隨機(jī)索長(zhǎng)誤差樣本，分析成形態(tài)下結(jié)構(gòu)的索力及位形偏差。結(jié)果表明，徑向索（脊索、谷索）索長(zhǎng)誤差僅對(duì)自身索力影響較為明顯，而環(huán)索索長(zhǎng)誤差對(duì)結(jié)構(gòu)各處索力影響較為均衡；建議脊索、谷索、環(huán)索的索長(zhǎng)誤差限值分別取索長(zhǎng)的1/1 700，1/2 000和1/2 000，該限值可用于指導(dǎo)長(zhǎng)春體育場(chǎng)屋蓋結(jié)構(gòu)的施工和驗(yàn)收。

［關(guān)鍵詞］整體張拉索膜結(jié)構(gòu)； 索長(zhǎng)誤差； 敏感性分析； 索長(zhǎng)誤差限值

中圖分類號(hào)：TU323-8文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2018)09-0055-07

Research on cable length deviation and its  control limit of all-tensioning cable-membrane structure

Li Xiaotong1, Zhang Guojun2 , Zhang Ailin1, Ge Jiaqi2, Yang Xiao3

(1 The College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China; 2 China Aviation Planning and Construction Development Co.,  Ltd.,  Beijing 100120, China; 3 Architectural Design and Research Institute of Tsinghua University Co.,  Ltd.,  Beijing 100084, China)

Abstract:Taking all-tensioning cable-membrane structural roof of Changchun Stadium as engineering background, in view of the deviation problem of cable force and configuration under the structure′s completed form from the design value caused by blanking deviation, installation deviation of the cable in the construction process, the sensitivity of prestress distribution and loop cable node configuration to the length deviation of single notochord cable, valley cable and loop cable were studied by using the finite element software ANSYS; and taking cable force deviation of the completed form less than 5% of the design value as requirements, the length deviation limit of the single rope was proposed; taking the deviation limit of all kinds of cable as the maximum allowable cable length deviation to generate random samples of cable length deviation, the cable force and configuration under the structure′s completed form were analyzed. Results show that the influence of the radial cable (notochord and valley cable) length deviation on their own cable force is relatively obvious, but the influence of loop cable length deviation on cable force is relatively balanced throughout the whole structure; the length deviation limit of notochord cable, valley cable and loop cable is suggested to 1/1 700, 1/2 000 and 1/2 000 of cable length respectively, the limit can be used to guide the construction and acceptance of the roof of Changchun Stadium.

Keywords:all-tensioning cable-membrane structure; cable length deviation; sensitivity analysis; deviation control limit of cable length

作者簡(jiǎn)介：李曉通，碩士研究生，Email: xilixiaotong@163.com。