摘要
为避免连栋温室因局部构件破坏而引起整体结构破坏,本研究选取咸阳地区某Venlo型连栋温室作为研究对象,基于抗连续倒塌基本机理提出了一种改进的敏感性分析方法,得到了连栋温室结构关键构件及其分布规律。使用MIDAS-GEN软件对温室骨架截面进行设计优化,而后在ANSYS软件中将优化后的结构通过结合拆除构件法和敏感性分析方法确定柱子的敏感性系数。结果表明:(1)长边柱的敏感性系数与中柱接近并大于短边柱,短边柱敏感性系数大于角柱;(2)长边柱靠近两端敏感性系数显著上升,有桁架铰接的柱相较于其他柱敏感性系数略高;(3)中柱的敏感性系数与直接应力呈现正相关性,而长边柱和短边柱则相反。研究结果可为连栋温室优化、抗连续性倒塌等研究提供参考。
In order to avoid the overall structural damage caused by the failure of local components,a Venlo type greenhouse in Xianyang area was selected as the research object,and an improved sensitivity analysis method was applied based on the basic mechanism of continuous collapse resistance,and the key components of the continuous greenhouse structure and their distribution were obtained.The design and optimization of the greenhouse skeleton section was carried out by MIDAS-GEN software,and then the sensitivity coefficient of the column was determined by combining the demolition member method and the sensitivity analysis method in ANSYS software.The results showed that:(1)the sensitivity coefficient of the long side column was close to that of middle column and greater than that of the short side column,and the sensitivity coefficient of the short side column was greater than that of the corner column;(2)the sensitivity coefficient of the long side column near both ends increased significantly,and the column with truss hinged had a slightly higher sensitivity coefficient than that of other columns;(3)the sensitivity coefficient of the middle column showed a positive correlation with the direct stress,while the long and short column were opposites.The research results can provide a reference for the optimization of multi-span greenhouse and the study of continuous collapse resistance.
作者
胡燕妮
何斌
范全
张金豪
梁钰嵩
范彬
HU Yanni;HE Bin;FAN Quan;ZHANG Jinhao;LIANG Yusong;FAN Bin(College of Water Resources and Architectural Engineering,Northwest A&F University,Yangling,Shaanxi 712100;Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas,Ministry of Education,Northwest A&F University,Yangling,Shaanxi 712100)
出处
《中国农学通报》
2023年第30期144-150,共7页
Chinese Agricultural Science Bulletin
基金
陕西省科技创新引导专项项目“大型智能蓄热装配化温室结构关键技术研究”(2021QFY08-01)。
关键词
连栋温室
连续性倒塌
关键构件
敏感性
multi-span greenhouse
continuous collapse
key components
susceptibility
