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(1 東南大學(xué)土木工程學(xué)院  南京 210096； 2 香港華藝設(shè)計(jì)顧問(深圳)有限公司  518031)

［提要］  以長(zhǎng)江防洪模型試驗(yàn)大廳為工程背景，介紹了一種新型大跨空間結(jié)構(gòu)體系：預(yù)應(yīng)力網(wǎng)殼-拉桿拱組合結(jié)構(gòu)。結(jié)合該工程的結(jié)構(gòu)特點(diǎn)，采用提出的“迭代求解法”確定了索的初始形變，并利用“順序分析法”進(jìn)行預(yù)應(yīng)力施工全過(guò)程模擬得到各水平拉索和豎向吊桿的張拉控制力，最后將預(yù)應(yīng)力施工的現(xiàn)場(chǎng)監(jiān)測(cè)結(jié)果與理論分析結(jié)果進(jìn)行對(duì)比，驗(yàn)證了理論分析的準(zhǔn)確性。

［關(guān)鍵詞］  預(yù)應(yīng)力網(wǎng)殼-拉桿拱  初始形變  迭代求解法  預(yù)應(yīng)力分析  監(jiān)測(cè)

Prestressing Analysis and Inspection on Composite Structure of Prestressed Reticulated Shell and Tied-Arch/Zhou Zhen1, Chen Yachun2, Meng Shaoping1, Wu Jing1 (1 Civil Engineering College of Southeast University, Nanjing 210096, China; 2 China Construction (Shenzhen) Design International Shanghai Branch, Shanghai 200233, China)

Abstract:Based on the experiment hall engineering of preventing flood model for Changjiang river, a new type large span space structure is introduced, i.e., composite structure of prestressed reticulated shell and tiedarch. Incorporating the characters of this engineering, the “iterative method” is presented to determine the initial deformations of cables, and the prestressing process of experiment hall engineering is simulated using “sequential analytical method” to obtain the results of cable forces in every prestressing phase. The field inspection and theoretical results of prestressing process are compared to verify the theoretical analysis.

Keywords:prestressed reticulated shell; teid arch; initial deformation; iterative method; prestressing analysis; inspection