双层柱面网壳受力分析研究  

Force Analysis and Study of Quadrangular Pyramid Double-layer

作　　者：白文阳 BAI Wenyang(Beijing Xinqiao Technology Development Co.,Ltd.,Beijing 100000,China)

机构地区：[1]北京新桥技术发展有限公司,北京100000

出　　处：《河南科技》2022年第5期73-76,共4页Henan Science and Technology

摘　　要：双层柱面网壳的建模计算及优化分析是本研究的主要内容。本研究所建模型腹杆的连接方式有抽空正放四角锥体系与正放四角锥体系两种形式。在参数化建模的基础上,通过ANSYS有限元静力分析,得到了两种形式下的双层柱面网壳结构应力、杆件内力值以及位移,并对其结果进行分析,总结出其中相对应的规律。在对结构静力分析结果的基础上,对正放抽空四角锥体系双层柱面网壳结构的杆件进行截面优化,运用相对应的截面优化方法(通过不断改变截面面积)找到该种网壳结构形式下的最优截面,直到得出使结构总重量最小但结构能够满足安全要求时的结构形式。The modeling calculation and optimization analysis of the double-layer cylindrical reticulated shell are the main content of this study.The connection mode of the web rods of the model built in this study has two forms:the evacuated positive quadrangular pyramid system and the positive quadrangular pyramid system.On the basis of parametric modeling,through ANSYS finite element static analysis,the two forms of double-layer cylindrical reticulated shell structure stress,member internal force value and displacement are obtained,and the results are analyzed,and the corresponding ones are summarized.Based on the results of the static analysis of the structure,the cross-section optimization of the doublelayer cylindrical reticulated shell structure of the evacuated quadrangular pyramid system is carried out,and the corresponding cross-section optimization method is used(by continuously changing the crosssectional area of the cross-section)Find the optimal cross-section under this kind of reticulated shell structure until the structure that minimizes the total weight of the structure but the structure can meet the safety requirements is obtained.

关 键 词：双层柱面网壳 四角锥 截面优化 计算模拟 参数化建模 

分 类 号：U448[建筑科学—桥梁与隧道工程]