（浙江大学空间结构研究中心， 杭州 310027）

［摘要］主要分析三种形式的张弦气肋梁结构在不同气压值作用下的基本力学性能和静力承载能力，利用ANSYS软件构建张弦气肋梁结构的有限元模型,对结构进行从充气构建预应力到承受荷载的全过程分析。首先分析结构在荷载态时不同气压值作用下的内力状态，再根据荷载-位移几何非线性分析讨论满跨均布荷载作用下不同气压值对结构静力极限承载力的影响，并根据结构的受力性能和极限承载力大小以及结构对气压值改变的敏感程度，比较了三种形式的张弦气肋梁结构的优劣，拟定合理的气压值。所得结论可为进一步研究和设计张弦气肋梁结构提供参考。

［关键词］张弦气肋梁结构; 合理气压值; 受力性能; 极限承载力

中图分类号：TU353      文献标识码：A      文章编号：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

作者简介：梁昊庆，博士研究生，Email:ccea-lianghq@zju.edu.cn。

参考文献

［1］LUCHSINGER R H, PEDRETTI A, STEINGRUBER P, et al. The new structural concept tensairity: basic principles［C］//Proceedings of the Second International Conference on Structural Engineering. Mechanics and Computation, 2004.

［2］PEDRETTI A, STEINGRUBER P, PEDRETTI M, et al. The newstructural concept tensairity: FE-modeling and applications ［C］//Proceedings of the Second International Conference on Structural Engineering. Mechanics and Computation, 2004.

［3］LUCHSINGER R H, CRETTLO R. Experimental and numerical study of spindle shaped tensairity girders ［J］. International Journal of Space Structures, 2006, 21(3):119-130.

［4］LUCHSINGER R H, PEDRETTI A, STEINGRUBER P, et al. Light weight structures with tensairity ［C］//Shell and Spatial Structures from Models to Realization. Montepellier, 2004.

［5］PEDRETTI M, LUCHSINGER R H. Tensairity patent—a pneumatic tensile roof ［J］. Stablbau, 2007, 76(5):314-319.

［6］曹正罡，张熊迪，范峰. 纺锤形Tensairity结构基本力学性能研究［J］.土木工程学报，2011，44(1) :11-19.

［7］曹正罡，范峰，严佳川, 等.气撑式张弦结构静力试验研究及有限元分析［J］.建筑结构学报，2012，33（5）：31-37.

［8］张雄迪. 气撑式张弦结构基本力学性能研究［D］.哈尔滨：哈尔滨工业大学，2009.

［9］董石麟. 空间结构的发展历史、创新、形式分类与实践应用［J］.空间结构, 2009,15(3):22-43.

［10］董石麟，罗尧治，赵阳，等. 新型空间结构分析、设计与施工［M］.北京：人民交通出版社，2006.