膜结构找形分析的综合设计策略  

The synthetical methods for form-finding of membrane structures

作　　者：孙炳楠[1] 倪志军[1] 余雷 毛国栋[3] 

机构地区：[1]浙江大学建筑工程学院,浙江杭州310027 [2]张家港市建设工程质量监督站,江苏张家港215600 [3]浙江省建筑设计研究院,浙江杭州310006

出　　处：《空间结构》2004年第4期27-30,共4页Spatial Structures

摘　　要：针对膜结构找形分析中的初始形状确定提出了新的综合设计策略.对初始形状的确定,首先采用力密度格式得到初始近似曲面,在此基础上进行动力松弛计算,得到更为精确的初始曲面.通过综合设计策略和力密度格式、动力松弛格式的比较,发现此种方法比力密度格式精度有所提高,收敛速度比动力松弛格式快得多.The synthetical methods for form-finding of membrane structures are proposed in this paper. In order to find the equilibrium surface of membrane structures, the force-density method is adopted to get an approximate surface firstly. Then the dynamic relaxation method is used on the approximate surface to get an accuracy surface. The synthetical methods can get more accurate results than force-density method, and its calcuation speed is faster than that of dynamic method. Numerical studies show that the synthetical methods proposed in this paper can solve successfully the form-finding problems of membrane structures.

关 键 词：找形分析 力密度 膜结构 综合设计 基础 松弛 计算 曲面 

分 类 号：TU351[建筑科学—结构工程] TU383