Strong vibration during earthquake may cause the bolts to loosen,slip or even break,affect the overall bearing capacity and stability of the joints,and increase the risk of structural collapse.In order to reduce the damage to the main structure,the seismic performance of fully bolted rigid joints of prefabricated steel structures was analyzed.The amount of high-strength bolts was calculated and the geometric model of the structure was built.The finite element model was built considering the node parameters in Abaqus finite element software,and the loading system and seismic performance of the structural joints under the influence of seismic load were determined.The simulation results show that compared with ordinary steel joints,the prefabricated steel joints connected with high-strength bolts have higher stability under earthquake because the plastic hinge of the flange moves outward.At different stages,the bolts on the joint play a strong role,there will be no serious stress concentration,and the joint is not easy to crack.After the peak load,the skeleton curve of the joints drops smoothly and stably,without losing stability,and has strong seismic performance.
关键词
装配式钢结构/全栓接刚节点/加载制度/抗震性能/Abaqus有限元
Key words
prefabricated steel structure/fully bolted rigid joints/loading system/seismic performance/Abaqus finite element
维普
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