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(北京工業(yè)大學(xué)建筑工程學(xué)院 100022)
【提要】對(duì)目前在國(guó)內(nèi)外引起廣泛關(guān)注的大跨度空間索承網(wǎng)殼結(jié)構(gòu)進(jìn)行了成形即預(yù)應(yīng)力張拉階段的試驗(yàn)研究。介紹了索承網(wǎng)殼結(jié)構(gòu)的連接方式、施工方法、張拉過(guò)程及其數(shù)值模擬計(jì)算，并按模擬計(jì)算工序和參數(shù)建立了索承網(wǎng)殼試驗(yàn)?zāi)Ｐ汀?shí)施操作與測(cè)試結(jié)果證明了逐環(huán)拼裝張拉成形的施工方法和施工張拉順序的可行性。與試驗(yàn)結(jié)果的比較表明，用循環(huán)前進(jìn)分析方法進(jìn)行施工全過(guò)程仿真分析是適用的，對(duì)正確建立索承網(wǎng)殼結(jié)構(gòu)的設(shè)計(jì)理論及工程應(yīng)用具有指導(dǎo)意義。
【關(guān)鍵詞】 成形試驗(yàn) 逐環(huán)拼裝張拉成形 循環(huán)前進(jìn)分析方法
Experimental Research of Form Finding on Cablesupported Lattice Shell Structures/Li Yongmei,Zhang Yigang,Liu Jia(College of Civil Engineering and Architecture，Beijing University of Technology，Beijing 100022，China)
Abstract:A model experimental research of the stage of form finding（namely prestressing）for the cablesupported lattice shell structure,which is widely paid attention to in the world,is carried out. The connection,construction,prestressing process and numerical simulating for the cablesupported lattice shell structure are introduced respectively.  According to the procedure and parameters in simulating,a model of the cablesupported lattice shell structure is made. The feasibility on the assemblyprestressing form finding method loop by loop is testified. Calculating model by means of the cycleforward analysismethod for construction is established and numerical simulation performed,which gives good agreement with the test results. It will be helpful for design and construction of similar cablesupported lattice shell structures.
Keywords:form finding test; assemblyprestressing form finding loop by loop; cycleforward analysis method
*國(guó)家自然科學(xué)基金資助項(xiàng)目(50278004)，北京工業(yè)大學(xué)青年科研基金資助項(xiàng)目(970040122005·1)。