山东建筑大学学报2025，Vol.40Issue(1)：13-21,31,10.DOI:10.12077/sdjz.2025.01.002
装配式钢围檩螺栓开孔优化及抗弯性能分析
Optimization of prefabricated steel enclosing purlin bolt openings and analysis of bending performance
摘要
Abstract
The prefabricated steel enclosing purlin,serving as a innovative support component,is utilized in foundation pit to support engineering.Investigating its bending performance after bolt opening can provide a theoretical basis for practical engineering applications.This paper conducts numerical simulations on the main unit of the prefabricated steel enclosing purlin under different bolt hole layout schemes by using ANSYS,focusing on pure bending conditions.The analysis examines the bending bearing capacity,bending stiffness,bolt residual preload,reveals the stress distribution across different configurations.The results show that:in the open specimen scheme,bolt openings result a reduction of 14%to 23%in the ultimate bending bearing capacity.Similarly,bolt openings cause a decrease in the bending stiffness of the specimen during the elastic deformation stage by 5%to 19%.Moreover,the bending capacity and stiffness of the specimen can be improved by increasing the spacing between the x-direction bolt holes and the height of the T-shaped section.Additionally,specimens with standard round holes in the connecting plate exhibit higher bearing capacity and better bending stiffness compared to those with elongated grooved holes under the same parameters.关键词
装配式/钢围檩/螺栓连接/螺栓孔/数值模拟Key words
prefabricated/steel enclosing purlin/bolted connection/bolt hole/numerical simulation分类
建筑与水利引用本文复制引用
张新,范大为,郭培民,赵雷..装配式钢围檩螺栓开孔优化及抗弯性能分析[J].山东建筑大学学报,2025,40(1):13-21,31,10.基金项目
山东省重点研发计划(重大科技创新工程)项目(2021CXGC011204) （重大科技创新工程）
