单层椭圆抛物面网壳自振特性分析及实用公式  

STUDY ON THE DYNAMIC CHARACTERISTICS AND THE FUNDAMENTAL FREQUENCY PRACTICAL FORMULA FOR SINGLE-LAYER ELLIPTICAL PARABOLIC LATTICED SHELL

作　　者：赵文雁[1] 文明[1] 王新芳[1] 

机构地区：[1]南昌大学建筑工程学院,南昌330031

出　　处：《工业建筑》2009年第S1期471-474,共4页Industrial Construction

摘　　要：系统分析了矢跨比、跨度、支座刚度和屋面荷载等因素对单层椭圆抛物面网壳自振特性的影响,并在对大量该网壳模型自振特性分析基础上,利用多元最小二乘法拟合出了单层椭圆抛物面网壳基本频率的计算公式,同时对该公式的精确度进行了验证。The influence of some factors such as rise to span ratio,span,stiffness of supports and roof load on dynamic characteristics of single layer elliptical parabolic latticed shell was studied.Based on hundreds of calculation examples,the practical formula of fundamental frequency for single layer elliptical parabolic latticed shell was proposed according to least squares method.The accuracy of this formula was proved.

关 键 词：椭圆抛物面网壳 自振特性 基本频率 最小二乘法. 

分 类 号：TU399[建筑科学—结构工程] TU311.3