【作者】 杨瑶； 王萌； 柯小刚； 崔悦； 刘长坤；

【Author】 Yang Yao;Wang Meng;Ke Xiaogang;Cui Yue;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】 为了分析LYP160低屈服点钢材高强度螺栓连接孔壁承压性能,采用通用有限元软件ABAQUS建立非线性全接触有限元模型,对端距、边距、螺栓间距三个重要影响因素进行参数分析,深入探讨各参数对孔壁承压性能的影响。基于与各国规范设计方法的比较,通过拟合曲线得到适用于我国钢结构设计规范的LYP160低屈服点钢材孔壁承压强度设计建议值,为今后的工程设计提供依据。结果表明:承压强度随着端距、边距以及螺栓间距的增大而增大;提出修正后的Mo?e公式,能够较好地描述参数对承压性能的影响;适用于我国规范的LYP160低屈服点钢材孔壁承压强度设计建议值是1.63倍母材抗拉强度(无预拉力)和1.84倍母材抗拉强度(有预拉力)。更多还原

【Abstract】 In order to analyze the hole-wall bearing performance of LYP160 low yield point steel connection with high yield strength bolts, non-linear finite element model of ABAQUS was used for parametric analysis with three important factors including end distance, margin and spacing. The influences of these factors on hole-wall bearing performance were discussed in depth. Basing on comparing with different countries’ design principles, the suggested hole-wall bearing strength of LYP160 low yield point steel was obtained, which could be applied to Chinese Code by fitting curves, providing a basis for future engineering design. The results showed that: bearing strength increased with increasing of end distance, margin and spacing; the corrected formulas of Mo?e were proposed, which could describe the effects of parameters on bearing performance better; the suggested design values of hole-wall bearing strength of LYP160 low yield point steel was 1.63 times of tensile strength of base material(without pre-tension) and 1.84 times of tensile strength of base material(with pre-tension).更多还原