吉首大学学报（自然科学版）2023，Vol.44Issue(5)：57-63,7.DOI:10.13438/j.cnki.jdzk.2023.05.008
开孔单层网壳结构的力学特性及稳定性
Mechanical Properties and Stability of Single-Layer Reticulated Shell with Holes
摘要
Abstract
Taking the reticulated shell structure node as the main research object,the numerical model of the main reticulated shell structure of the dry coal shed of the power plant is constructed,the buckling mode of the perforated reticulated shell structure is studied,and the nonlinear buckling analysis is carried out to explore the static characteristics under vertical load and wind load.It is found that the stress con-centration occurs at the opening of the reticulated shell.The maximum stress of the joint under the verti-cal load is 0.037 kPa,and the maximum stress of the joint under the wind load is 0.024 kPa.The maxi-mum displacement of the node under the vertical load is 0.881 mm,and the maximum displacement of the node under the wind load is 1.692 mm,which is 69.34％and 19.57％higher than the average dis-placement of the node of the whole reticulated shell structure,respectively,which meets the requirements of the code.In the eigenvalue buckling analysis,some members of the rigid joint reticulated shell struc-ture are deformed,which has a certain influence on the structural safety.After the re-optimization design of the reticulated shell,some joints adopt hinged joints,and the eigenvalue buckling load is 4.12％higher than that of pure rigid joints,which effectively improves the stability of the reticulated shell structure.关键词
开孔网壳结构/力学特性/屈曲模态/数值分析/稳定性Key words
open-hole reticulated shell structure/mechanical activation behavior/buckling mode shape/nu-merical analysis/stability分类
建筑与水利引用本文复制引用
王建省,刘戈,张鹏宇,张钊巍..开孔单层网壳结构的力学特性及稳定性[J].吉首大学学报（自然科学版）,2023,44(5):57-63,7.基金项目
National Natural Science Foundation of China(11572001,51478004) （11572001,51478004）
2021 Undergraduate Course Ldeological and Political Demonstration Course-Theoretical Mechanics(108051360022XN569) （108051360022XN569）
2022 Great Innovation Project-Frame Bridge Structural Engineering Research(108051360022XN388) （108051360022XN388）
