基于OpenSees绿色高性能纤维增强水泥基复合材料柱抗震性能研究  

Seismic performance of green high performance fiber reinforced cementitious composites column based on OpenSees

作　　者：邵方诚 李秀领[1] SHAO Fangcheng;LI Xiuling(Shandong Co-Innovation Center for Disaster Prevention and Mitigation of Civil Engineering,School of Civil Engineering Shandong Jianzhu University,Jinan 250101,China)

机构地区：[1]山东建筑大学土木工程学院,山东省土木结构防灾减灾协同创新中心,山东济南250101

出　　处：《混凝土》2020年第4期78-83,88,共7页Concrete

基　　金：国家自然科学基金项目(51108253,51278290);长江学者和创新团队发展计划教育部创新团队(IRT13075)。

摘　　要：利用Open Sees对绿色高性能纤维增强水泥基复合材料(Green High Performance Fiber Reinforced Cementitious Composites,GHPFRCC)柱在低周反复荷载作用下的抗震性能进行数值模拟,得到了C30柱、GHPFRCC柱、火损GHPFRCC柱和加固火损GHPFRCC柱的滞回曲线和骨架曲线,并与试验结果进行对比分析。模拟不同加固厚度、不同压应变值和不同的积分点数量GHPFRCC柱的性能变化,得出结论。Open Sees软件能很好地模拟GHPFRCC结构,加固厚度越大,极限承载力越大;极限压缩应变选值在-0.002^-0.006之间最为合适,在模拟过程中,选择积分点为5模拟的更精准。Open Sees is used to simulate the seismic behavior of green high performance fiber reinforced cementitious composite(GHPFRCC)columns under cyclic loading.C30 columns,GHPFRCC columns,fire damaged GHPFRCC columns and strengt he-ned GHPFRC columns are simulated respectively.The hysteretic curves and skeleton curves of C-column are compared with the experimental results,which verify that Open Sees can effectively simulate the GHPFRCC structure.Then the performance changes of GHPFRCC columns with different reinforcement thickness,different compressive strain values and different number of integral points are simulated,and the results are analyzed.Conclusion that Open Sees software can simulate the GHPFRCC structure well,and the greater the reinforcement thickness,the greater the ultimate bearing capacity.Limit compression strain should be selected between-0.002^-0.006 is the most appropriate,in the simulation process,the choice of integration point 5 simulation is more accurate.

关 键 词：OPEN SEES 绿色高性能纤维增强水泥基复合材料 柱子 抗震性能 加固火损 数值模拟 

分 类 号：TU528.572[建筑科学—建筑技术科学]