均布荷载作用下设置抗扭体系的简支钢梁受力性能分析  

Mechanical properties impact analysis of simply supported steel beam with torsional system under uniform load

作　　者：过轶青[1] 张文福[1] GUO Yi-qing;ZHANG Wen-fu(School of Civil Engineering and Architecture,Nanjing Institute of Technology,Nanjing 211167,China)

机构地区：[1]南京工程学院建筑工程学院,江苏南京211167

出　　处：《兰州理工大学学报》2023年第3期127-134,共8页Journal of Lanzhou University of Technology

基　　金：国家自然科学基金(51578120)。

摘　　要：为研究在简支钢梁跨中设置抗扭体系后,承受均布荷载简支钢梁的整体稳定受力性能,利用双变量总势能驻值原理,推导跨中设置抗扭体系的简支钢梁临界均布荷载与抗扭体系抗扭刚度相关计算公式.同时构建在简支钢梁跨中考虑抗扭效应的ANSYS有限元模型,对跨中抗扭体系影响下的简支钢梁整体稳定进行有限元模态分析.理论计算与有限元模拟结果均表明,设置抗扭体系后,简支钢梁临界均布荷载值得到有效的提高.In order to study the mechanical properties of simply supported steel beam with torsional system in the span under uniform load,the double variant stationary value theory of total potential energy was used to derive the correlation calculation formulas between critical uniform load of steel beam and torsion rigidity coefficient of torsional system.At the same time,the ANSYS finite element model is established to perform the buckling model analysis of simply supported steel beam with different torsion rigidity coefficients in the span.The theoretical calculation results and finite element analysis results both show that with the increase of the torsion rigidity coefficient,the critical uniform load of simply supported steel beam is improved effectively.

关 键 词：抗扭体系 均布荷载 受力性能 总势能驻值原理 有限元模型 

分 类 号：TU311.2[建筑科学—结构工程]