建筑钢结构进展2012，Vol.14Issue(4)：18-21,64,5.
ETFE薄膜结构积水试验与数值分析
Experimental and Numerical Studies on the Ponding of ETFE Foil Structures
摘要
Abstract
Membrane structure is a kind of flexible structure. The ponding phenomenon of membrane surface is likely to happen in heavy rains. In this paper, the structural behavior of ETFE foil structures under ponding water are numerically analyzed through an iterative method by using the ANSYS software package. Two numerical examples, the plane model and the cushion model, are investigated and the results of parameter studies are given. It is shown that the ponding phenomenon will happen when the span of plane ETFE model exceeds 3 m and the thickness of foil is 250 μm. For the ETFE cushion model, the ponding phenomenon is determined not only by the span of the cushion but also by the ratio of rise to span. When the span of cushion reaches 5 m, or the ratio of rise to span reaches 1/8 and the span is 4 m, ponding phenomenon will happen for the double-layer cushion. In the end, water loading experiments on an ETFE cushion model are carried out and the results from both the numerical analysis and experiments are discussed.关键词
ETFE薄膜/膜结构/积水/数值分析/模型试验Key words
ETFE foil/ membrane structure/ ponding) numerical analysis/ model experiment分类
建筑与水利引用本文复制引用
吴明儿,王暄..ETFE薄膜结构积水试验与数值分析[J].建筑钢结构进展,2012,14(4):18-21,64,5.基金项目
国家自然科学基金(50778129,90815003) （50778129,90815003）
