可修复的装配式钢框架梁柱节点非线性静力分析-《建筑科学与工程学报》

文章信息/Info

Title:: Nonlinear Static Analysis of Repairable Prefabricated Steel Frame Beam-column Joint

Author(s):: ZHANG Ai-lin, ZHANG Zhen-yu, JIANG Zi-qin, LI Ran; College of Architecture and Civil Engineering, Beijing University of Technology

Keywords:: prefabricated steel frame beam-column joint; connection zone; plastic hinge; nonlinear static analysis

摘要:: 提出了一种可修复的装配式钢框架梁柱节点，通过改变翼缘连接盖板的厚度、中间排螺栓间距等参数，将塑性铰转移到连接区，从而利用翼缘连接盖板的变形来消耗地震能量，确保梁柱等主要构件保持在弹性范围内不发生破坏，震后只需更换翼缘连接盖板即可实现节点的快速修复。利用ABAQUS有限元分析软件对5个节点进行了数值模拟研究，获得了节点的承载能力、破坏模式、构件应力等，着重分析了中间排螺栓间距、翼缘连接盖板厚度等参数对节点关键力学性能的影响规律。结果表明：通过合理设计翼缘连接盖板厚度、中间排螺栓间距等相关参数既可保证节点承载能力，又能确保梁柱等主要构件不发生破坏，以实现节点的震后快速修复。

Abstract:: A kind of repairable prefabricated beam-column joint was proposed. By varying the thickness of flange plate and the spacing of the middle row bolts, the plastic hinge was transferred to the connection zone, and the seismic energy could be dissipated by the deformation of flange plate. The method could ensure that the main components such as beams and columns kept within elastic range and without damage, and the joint could be rapidly repaired by replacing the flange plate after earthquake. The numerical simulations of 5 joints were carried out by using finite element analysis software ABAQUS, and the bearing capacities, failure modes and stresses of components were obtained. The influences of the spacing of the middle row bolts and the thickness of flange plate on the key mechanical properties of the joints were mainly analyzed. The results show that the bearing capacity could be guaranteed by reasonable design of the thickness of flange plate and the spacing of the middle row bolts, and the damage of the main components such as beams and columns can be avoided, and the rapid rehabilitation after earthquake can be achieved.