隔板贯通式全螺栓节点抗连续性倒塌性能数值模拟分析

发布时间：2018-04-10 13:33

本文选题：连续性倒塌 + 隔板贯通式节点　；参考：《振动与冲击》2015年10期

【摘要】：对不同构造的矩形钢管柱-H形钢梁隔板贯通式全螺栓连接节点进行数值模拟分析,考察窄盖板、较宽梯形盖板及较宽梯形盖板、梁下翼缘局部增大三种连接节点在连续性倒塌工况下的受力机理及破坏模式。结果表明,通过增大盖板尺寸,使初始断裂破坏位置外移至弯矩较小的外排螺栓处,可提高节点的承载能力。同时增大连接区域梁下翼缘宽度、盖板宽度,可使梁下翼缘连接处螺栓孔优先发生孔壁承压型破坏,延缓板件开裂,利于悬链线作用发展,大幅提高节点的承载能力。
[Abstract]:Through type joint numerical simulation analysis of the bolt connection of different structure of rectangular steel tube column -H beam plate, narrow inspection cover, wide flat and wide trapezoidal trapezoidal plate, lower flange partial increase of three kinds of connections in progressive collapse under the condition of stress mechanism and failure modes. The results show that with the increase of the cover plate size, the initial fracture position to move to the smaller moment of the outer row of bolts, can improve the bearing capacity of joints. While increasing the connection area of the beam bottom flange width, the width of the cover plate, the lower flange connecting bolt Kong You first occurrence of hole wall pressure type damage, delay plate cracking, conducive to the development of catenary action. Greatly improve the bearing capacity of the node.

【作者单位】：同济大学建筑工程系;同济大学土木工程防灾国家重点实验室;
【基金】：国家自然科学基金项目(51378380)
【分类号】：TU391;TU312.3

【共引文献】