- 摘 要
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（浙江大學(xué)空間結(jié)構(gòu)研究中心， 杭州 310027）
［摘要］主要分析三種形式的張弦氣肋梁結(jié)構(gòu)在不同氣壓值作用下的基本力學(xué)性能和靜力承載能力，利用ANSYS軟件構(gòu)建張弦氣肋梁結(jié)構(gòu)的有限元模型,對結(jié)構(gòu)進(jìn)行從充氣構(gòu)建預(yù)應(yīng)力到承受荷載的全過程分析。首先分析結(jié)構(gòu)在荷載態(tài)時不同氣壓值作用下的內(nèi)力狀態(tài)，再根據(jù)荷載-位移幾何非線性分析討論滿跨均布荷載作用下不同氣壓值對結(jié)構(gòu)靜力極限承載力的影響，并根據(jù)結(jié)構(gòu)的受力性能和極限承載力大小以及結(jié)構(gòu)對氣壓值改變的敏感程度，比較了三種形式的張弦氣肋梁結(jié)構(gòu)的優(yōu)劣，擬定合理的氣壓值。所得結(jié)論可為進(jìn)一步研究和設(shè)計張弦氣肋梁結(jié)構(gòu)提供參考。
［關(guān)鍵詞］張弦氣肋梁結(jié)構(gòu); 合理氣壓值; 受力性能; 極限承載力
中圖分類號：TU353 文獻(xiàn)標(biāo)識碼：A 文章編號：1002-848X(2014)10-0066-07
Effect of air pressure on basic mechanical behaviors of Tensairity structures with three different forms
Liang Haoqing, Dong Shilin
(Space Structures Research Centers, Zhejiang University, Hangzhou 310027, China)
Abstract: The basic mechanical behaviors and static ultimate bearing capacity of Tensairity structures with three different forms based on different air pressure were mainly analyzed. ANSYS was used to establish the finite element model to carry out an overall process analysis from aeration state to load-bearing state. At first the internal force of mechanical elements under uniformly distributed loads along the whole span based on different air pressure values were calculated, and then the effects of different air pressure values on the static ultimate bearing capacity under uniformly distributed loads along the whole span were discussed according to the load-displacement geometric nonlinear analysis. The advantages and disadvantages of Tensairity structures with three different forms were compared and the reasonable air pressure value was determined according to the mechanical behavior, ultimate bearing capacity and different air pressure sensitivity degrees of the structures. These results and analysis provide reference for the study and practical design of Tensairity structures.
Keywords: Tensairity structure; reasonable air pressure value; mechanical behavior; ultimate bearing capacity
作者簡介：梁昊慶，博士研究生，Email:ccea-lianghq@zju.edu.cn。
參考文獻(xiàn)
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