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利用ANSYS软件,对常用的六边形孔和圆形孔蜂窝式钢框架结构的破坏模式、梁上塑性铰、滞回曲线、骨架曲线、延性和耗能能力进行分析。研究表明:在扩高比K和梁上第一个孔洞中心距柱翼缘距离B等参数的影响下,蜂窝式钢框架结构可以利用蜂窝梁梁端孔洞位置处的腹板削弱;在地震作用下,使塑性铰产生于梁上第一个孔洞位置,远离梁柱连接部位的焊缝区域,提高其抗震性能。通过分析参数K和B对其塑性铰出现位置的影响规律,提出六边形孔和圆形孔蜂窝式钢框架参数B取值的建议公式。在此参数范围内,蜂窝式钢框架结构的抗震性能和延性相比普通实腹钢框架并没有明显降低,具有良好的耗能能力。
Using ANSYS software, the failure mode, plastic hinge, hysteresis curve, skeleton curve, ductility and energy dissipation capacity of commonly used hexagonal hole and round hole honeycomb steel frame structure are analyzed. The results show that the honeycomb steel frame can be weakened by the web at the end of the honeycomb girder under the influence of the expansion ratio K and the distance between the center of the first hole in the girder and the column flange B and so on. , The plastic hinge is generated in the first hole position on the beam, far away from the weld area of the connecting part of the beam column and the column to improve its seismic performance. Through the analysis of the influence of parameters K and B on the appearance of plastic hinges, a formula of parameter B for hexagonal and circular hole honeycomb steel frames is proposed. In this parameter range, the seismic performance and ductility of the honeycomb steel frame structure are not significantly lower than that of ordinary real steel frame, and have good energy dissipation capacity.