论文部分内容阅读
梁柱T形钢连接节点通过螺栓和T形钢把钢框架中的梁柱连接在一起,构造简单、受力明确、抗震性能优越,是一种刚劲的半刚性连接方式,但普通梁柱T形钢连接节点应用于高层建筑中仍存在刚度、强度不足的问题。通过试验和有限元数值模拟研究了普通梁柱T形钢连接节点的力学性能,从该节点的最薄弱部位着手,探讨了加强上部T形钢构造的六种方案:腹板增设一排抗剪螺栓、腹板与翼缘间设加劲肋、增加翼缘及腹板宽度、增加翼缘及腹板宽度同时增加翼缘横向螺栓数量、梁腹板与柱之间增设单腹板和双腹板连接角钢。数值分析结果表明,以上六种方案均能直接或间接地提高节点的弹性极限、初始刚度和极限承载力,但对最终的破坏模式影响较小。最后针对T形钢连接节点的构造加强方式提出了一些建议。
The beam-column T-shaped steel connecting node connects the beam and column in the steel frame through the bolt and the T-shaped steel. The utility model has the advantages of simple structure, definite force and excellent seismic performance, and is a rigid and semi-rigid connection manner, Shaped steel connection node is used in high-rise buildings there is still the problem of stiffness, lack of strength. Through the experiment and finite element numerical simulation, the mechanical properties of T-beam connection of ordinary beam and column were studied. From the weakest part of the node, six schemes to strengthen the upper T-shaped steel structure were discussed. One row of shear reinforcement Stiffeners are arranged between the bolts, the webs and the flanges to increase the widths of the flanges and the webs, increase the widths of the flanges and the webs, and simultaneously increase the number of transverse bolts on the flanges. Single webs and double webs are provided between the webs and the webs Connect the angle. Numerical analysis results show that the above six schemes can directly or indirectly increase the elastic limit, initial stiffness and ultimate bearing capacity of the joints, but have little effect on the final failure modes. Finally, some suggestions are put forward to strengthen the structure of T-shaped steel joint.