摘要
基于通用有限元软件ABAQUS,建立1∶2比例两跨三层一般空间钢框架和加腋空间钢框架的多尺度模型,分别进行循环荷载作用下的模拟,对比两类钢框架的破坏模式、强度、延性、耗能能力及退化特性。分析表明:加腋空间钢框架可以有效实现塑性铰在梁上形成,避免梁柱节点焊缝过早发生脆性破坏,并且加腋空间钢框架相比一般空间钢框架表现出更好的抗震性能。
Based on the general finite element software ABAQUS,the multi-scale models for a 1 ∶ 2 scale two-span three-layer general space steel frame and a space steel frame with haunch were built,the process was simulated under cyclic loading,so as to compare the failure modes,structural strength,ductility,energy dissipation capacity and degradation comparatively. The results showed that the space steel frame with haunch could effectively achieve the goals that the plastic-hinges were formed in the beams,and avoid the brittle failure occurs prematurely at the welds of the beam-column joints. The space steel frame with haunch exhibited better seismic behavior than that of general space steel frame.
出处
《钢结构》
北大核心
2016年第6期28-32,39,共6页
Steel Construction
关键词
加腋空间钢框架
多尺度模型
循环荷载
抗震性能
space steel frame with haunch
multi-scale model
cyclic loading
seismic behavior
