【作者】 崔悦； 王萌； 毕鹏； 杨瑶； 刘长坤；

【Author】 Cui Yue;Wang Meng;Bi Peng;Yang Yao;Liu Changkun;School of Civil Engineering, Beijing Jiaotong University;National Demonstration Center for Experimental Civil Engineering Education, Beijing Jiaotong University;

【机构】 北京交通大学土木建筑工程学院； 北京交通大学土木工程国家级实验教学示范中心；

【摘要】 为了研究LYP100低屈服点钢材的孔壁承压性能,并提出适用于低屈服点钢材的孔壁承压强度计算公式,采用有限元软件ABAQUS建立非线性精细有限元模型,通过参数遍历分析,研究螺栓端距、边距、间距以及预拉力对低屈服点钢材孔壁承压性能的影响。并与现有各国规范和计算方法进行充分对比,提出适用于LYP100低屈服点钢材的孔壁承压强度计算公式,为工程应用提供参考依据。分析结果表明:预拉力能够提高低屈服点钢材的孔壁承压强度;孔壁承压强度随螺栓端距、边距和间距的增加而增大;基于对现有计算公式的修正,提出了适用于我国LYP100低屈服点钢材孔壁承压强度计算公式。更多还原

【Abstract】 In order to investigate the bearing performance of the hole wall with low yield point steel, and propose the formulas for calculating the bearing strength of the hole wall,nonlinear finite element models were established with ABAQUS. Based on the parametric analysis, the influences of end distance, margin and spacing between bolts and pre-tension on the hole wall bearing properties of low yield point steel were studied. Compared with the existing national norms and calculation methods, the formulas for calculating the bearing strength of the hole wall of low yield point steel were proposed, which could provide reference for engineering application. The analysis results showed that the pre-stress can increase the bearing strength of the hole wall with low yield point steel. The bearing strength of the hole wall increased with the increasing of end distance, margin, spacing between bolts. Based on the existing calculation formulas, the correction formula was put forward, which was suitable for calculating the bearing strength of hole wall with LYP100 low yield point steel.更多还原