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首先对几种常见的膜结构破坏形式进行了阐述分析.在世博轴局部足尺模型试验中,将数值计算结果同试验结果进行了对比分析,发现两者相差很大,经分析认为主要是由于对膜材料性能的不了解及理论分析中所采用的本构关系太过近似所致.因此准确把握膜材料的力学性能对于膜结构的研究、应用和推广至关重要.本文对几种常见的建筑膜材料进行了一系列的试验研究,包括单轴性能试验、双轴性能试验、粘弹性性能试验、温度试验等,对建筑膜材料的抗拉强度、拉伸曲面进行了系统研究,考虑了温度对于膜材料力学性能的影响,并采用几种常见的粘弹性模型对膜材料的粘弹性性能进行了预测,最后提出了下一步的研究方向.
First of all, some common forms of membrane damage were elaborated and analyzed.In the partial full-scale model test of Expo Axis, the numerical calculation results were compared with the test results and found that there was a big difference between the two, which was mainly attributed to Therefore, it is very important for the research, application and popularization of the membrane structure to know the mechanical properties of the membrane material accurately.This paper analyzes the commonness of several common A series of experimental studies on building membrane materials including uniaxial performance test, biaxial performance test, viscoelasticity performance test and temperature test have been carried out to systematically study the tensile strength and tensile surface of building membrane materials, Temperature on the mechanical properties of the membrane material, and the use of several common viscoelastic model of the viscoelastic properties of membrane materials were predicted, and finally proposed the next step in the research direction.