摘要
采用地震工程开源模拟软件OpenSees对CFRP加固RC短柱进行了静力Pushover分析和低周往复加载分析,并与通用有限元软件ANSYS模拟结果进行对比研究。研究结果表明:利用CFRP进行加固,不仅阻止了RC短柱的脆性剪切破坏,而且使破坏模式转化为延性弯曲破坏,增强了结构延性,进而有效地提高其抗震性能;同ANSYS相比,OpenSees可以宏观的反映CFRP与混凝土共同作用的非线性力学特征,有效地对构件和结构进行加固后的承载力及抗震性能分析。
OpenSees software is used to carry out static pushover analysis and low cyclic loading analysis on the CFRP retro-fitted reinforcement concrete short column, and the results are contrasted with the results simulated by ANSYS. The results indicate that retrofitting RC short column with carbon fiber reinforced plastic（CFRP） not only prevent brittle shearing failure of RC short columns, but also change the shearing failure mode to ductile bending failure. The ductility of the RC short column increases a lot and its seismic performance is improved. Compared with ANSYS, OpenSees can generally reflect the nonlinear mechanical properties of interaction between CFRP and concrete, and analysis the supporting capacity and seismic performance of retrofitted structure effectively.
出处
《世界地震工程》
CSCD
北大核心
2009年第4期108-111,共4页
World Earthquake Engineering
基金
国家自然科学基金项目(90715036
50338020)
