Q690高强圆钢管轴压性能数值分析及设计建议  

NUMERICAL INVESTIGATION AND DESIGN PROPOSAL OF AXIAL COMPRESSED PERFORMANCE ABOUT Q690 HIGH STRENGTH STEEL CIRCULAR TUBES

作　　者：钱刚 谢坚 孙水林 Qian Gang;Xie Jian;Sun Shui-lin

机构地区：[1]安徽中亚钢结构工程有限公司,合肥230051 [2]西安建筑科技大学土木工程学院,西安710055

出　　处：《建筑技术开发》2022年第11期48-51,共4页Building Technology Development

摘　　要：利用商用有限元软件ABAQUS,对4种不同径厚比,正则化长细比λ_(n)从0.5~2.3的一系列埋弧焊接Q690高强圆钢管柱的整体稳定承载力进行了计算,然后根据公式φ=N/(Af_(y))计算出整体稳定系数φ,将计算结果与GB 50017—2017《钢结构设计规范》规范中圆钢管轴压稳定曲线进行了比较。对Q690焊接圆钢管轴压构件整体稳定设计,针对GB 50017—2003《钢结构设计规范》规范提出两种建议:(1)对于柱子曲线选择的建议,即GB 50017—2003《钢结构设计规范》规范中采用a类柱子曲线;(2)对柱子曲线进行更新的建议,即更新GB50017—2003《钢结构设计规范》规范中的缺陷系数α_(1)、α_(2)、α_(3),提出了新的柱子曲线。In this paper,the finite element software ABAQUS is used to calculate the overall stability bearing capacity of a series of submerged arc welded Q690 high-strength circular steel tubular columns with different ratios of thickness to thickness and normalized slenderness ratioλ_(n) from 0.5 to 2.3,and then according to the formulaφ=N/(Af_(y))calculates the overall stability coefficientφ,and the finite element calculation results were compared with the column curves of the round steel pipe in GB50017-2017.For the overall stability design of Q690 welded round steel pipe axial compression members,two suggestions are proposed for GB 50017—2003 specification:1)Recommendations for column curve selection,ie,class a column curve in GB 50017—2003 specification;2)The proposal to update the column curves,to update the defect coefficientsα_(1),α_(2),andα_(3) in the GB50017—2003 specification,finally,a new column curve was proposed.

关 键 词：Q690高强钢 轴压性能 柱子曲线 数值模拟 

分 类 号：TU391[建筑科学—结构工程]