(1 中国建筑设计研究院有限公司， 北京 100044；2 中冶建筑研究总院有限公司， 北京 100088；3 雄安高速铁路有限公司， 保定 071700) 

［摘要］为给工形钢管柱在雄安站工程中的应用提供技术支撑，通过缩尺模型试验，分析工形钢管柱在水平往复荷载作用下的压弯性能与破坏形态。采用ABAQUS对工形钢管柱进行数值模拟分析，分析双腹板-翼缘宽度比、宽厚比以及高宽比等参数对其截面应力、承载与变形能力的影响。结果表明：在水平往复荷载作用下，工形钢管柱荷载-位移滞回曲线呈饱满的梭形，变形与耗能能力较强；与平行腹板方向加载相比，平行翼缘方向加载时构件的承载能力更强，刚度退化减缓，面外变形减小。箱形柱与工形钢管柱根部的应力集中显著，易首先出现裂纹。平行腹板方向加载时，工形钢管柱内凹角部位的正应力比箱形柱相应部位的正应力增大，出现显著剪力滞后效应。随着双腹板-翼缘宽度比减小，工形钢管柱的承载力和变形能力逐渐增强，刚度退化率、等效黏滞阻尼系数、板件面外变形等均明显减小，抗震性能总体上优于相同壁厚的普通箱形柱。 

［关键词］雄安站；工形钢管柱；抗震性能；承载能力；缩尺试验；ABAQUS

中图分类号：TU391，TU375 文献标识码：A文章编号：1002-848X(2021)24-0026-09

Study on mechanical performance of concave box-section column in Xiong’an Railway Station

FAN  Zhong1,  CHEN  Yuchen2,  CHAI  Huijuan1,  HE  Tao3,  JIA  Xuefang3,  HU  Shengjun3,  WANG  Qilong3,  PENG  Yongjie3 

(1 China Architecture Design & Research Group, Beijing 100044， China；2 Central Research Institute of Building and Construction Co., Ltd., MCC Group, Beijing 100088， China；3 Xiong’an High-Speed Railway Co., Ltd., Baoding 071700， China) 

Abstract: In order to provide reliable technical support for the application of the concave box-section columns in  Xiong’an Railway Station, through the scaled model test, the compression-bending performance and failure pattern of the concave box-section columns under reciprocating horizontal loading were analyzed. ABAQUS was used to carry out numerical simulation analysis for the concave box-section columns, and the influence of the double web-flange width ratio, width-thickness ratio and height-width ratio on the section stress, bearing capacity and deformation capacity were analyzed.The results show that the concave box-section column has a full load-displacement ratio hysteresis curve under reciprocating horizontal loading, and has good deformation property and energy dissipation capacity. Compared with loading in the direction parallel to the web, the bearing capacity is higher, the rate of stiffness degrading is slower, and the out-of-plane deformation is smaller when loading in the direction parallel to the flange. Obvious stress concentration phenomenon exists in the bottom corners of both the box column and concave box-section column, so the crack easily occurs first. Under the horizontal force in the direction parallel to the web, the normal stress at the concave corner of the concave box-section column is larger than the according location of the box column, the shear lag effect is very significantly. As the double web-flange width ratio decrease, the bearing capacity and deformation ability of the concave box-section column gradually increase, the stiffness degradation, viscous damping coefficient, out-of-plane deformation all decrease obviously. The seismic performance of the concave box-section columns is generally better than the box columns with same wall thickness. 

Keywords:Xiong’an Railway Station； concave box-section column； seismic performance； bearing capacity; scaled model test； ABAQUS

 作者简介：范重，博士，教授级高级工程师，全国工程勘察设计大师，一级注册结构工程师，Email:fanz@cadg.cn。