中国农业大学学报2025，Vol.30Issue(7)：210-217,8.DOI:10.11841/j.issn.1007-4333.2025.07.18
柔性保温后墙日光温室骨架静力分析及其优化
Static analysis and structure optimization of the skeleton in the solar greenhouse with flexible insulation rear wall
摘要
Abstract
Aiming at the safety and economic issues of a new type of solar greenhouse with flexible thermal insulation rear wall,the mechanical performance and optimization of a 16 m-span greenhouse with flexible thermal insulation rear wall are studied by utilizing ANSYS WORKBENCH.The finite element model of the greenhouse framework is established based on the existing structural dimensions of the greenhouse in Miyun District,Beijing.Various loads acted on the greenhouse are analyzed and calculated,and 8 kinds of load conditions are identified.The internal forces and deformations of the greenhouse framework under 8 kinds of load conditions were simulatedstress and deformation nephogram of greenhouse skeleton.To further optimize the greenhouse framework while ensuring its safety,the static characteristics of greenhouse framework are analyzed by modifying the chord cross-section or adjusting the layout of the belly bar.The results show that:1)Among the 8 kinds of load conditions,the load condition"dead load+180° wind load+front roof insulation is put away"induced the highest stress and deformation in the greenhouse framework.And the maximum stress was 175.3 MPa and the maximum total deformation was 25.46 mm,which were both within the limits specified in the specification.2)Based on the two optimization schemes,the steel usage for the trusses of the greenhouse was reduced by 12.3％,or the rebar usage for the belly bar was reduced by 18.23％.Additionally,the light transmission rate for crops through a single steel pipe increased by 6.25％.The two optimization schemes reduce the construction cost of the greenhouse and improve the lighting transmission for crops.关键词
日光温室/桁架结构/荷载组合/结构优化/有限元分析Key words
solar greenhouse/truss structure/load condition/structural optimization/finite element analysis分类
农业科技引用本文复制引用
许晶,胡昊楠,廖政铭,底绍涵,赵淑梅..柔性保温后墙日光温室骨架静力分析及其优化[J].中国农业大学学报,2025,30(7):210-217,8.基金项目
北京现代农业产业技术体系(BAIC01-2024) （BAIC01-2024）
国家自然科学基金项目(U20A2020) （U20A2020）
高水效智慧农业关键技术与装备(00114332) （00114332）
