新型自复位K型偏心支撑钢框架抗震性能分析

发布时间：2018-04-16 16:31

本文选题：记忆金属(SMA) + K型偏心支撑　；参考：《工程抗震与加固改造》2017年06期

【摘要】：将K型偏心支撑钢框架的耗能梁换成形状记忆金属(Shape Memory Alloy,简称SMA)材料,通过SMA材料的超弹性为结构提供复位力,实现自复位K型偏心支撑钢框架的构想。为考察该新型自复位K型偏心支撑钢框架的抗震性能,应用ANSYS有限元软件建立K型偏心支撑钢框架多尺度有限元模型,在验证有限元模型合理的基础上,设计传统K型偏心支撑钢框架和自复位K型偏心支撑钢框架,采用10条强震记录分别进行罕遇地震作用下的弹塑性动力时程分析。研究表明:新型自复位K型偏心支撑钢框架震后残余变形较小,能较好地实现结构的自复位,耗能梁腹板处应力分布与传统结构较为相似,但耗能能力及侧向变形能力较传统结构有所弱化。
[Abstract]:The energy dissipation beam of K type eccentrically braced steel frame is replaced by shape Memory alloy material of shape memory metal. The supra-elasticity of SMA material provides the reset force for the structure and realizes the conception of self-reposition K type eccentrically braced steel frame.In order to investigate the seismic behavior of the new steel frame with self-reset K eccentrically braced steel frame, the multi-scale finite element model of K eccentrically braced steel frame is established by using ANSYS finite element software, and the finite element model is verified to be reasonable.The traditional K type eccentrically braced steel frame and the self reduction K type eccentric braced steel frame were designed. The elastoplastic dynamic time history analysis was carried out under rare earthquake using 10 strong earthquake records.The results show that the residual deformation of the new type K eccentrically braced steel frame is small after the earthquake, and the stress distribution at the web of the energy dissipation beam is similar to that of the traditional structure.However, the energy dissipation capacity and lateral deformation capacity are weaker than those of traditional structures.
【作者单位】：南京理工大学泰州科技学院;苏州科技大学江苏省结构工程重点实验室;
【基金】：国家自然科学基金项目(51578355) 江苏省自然科学基金项目(BK20151200,BK20161369) 江苏省高校自然科学基金项目(15KJB560008) 江苏高校‘青蓝工程’资助(2017)
【分类号】：TU352.11;TU391

【相似文献】