不同参数变化对方钢管再生混凝土柱抗震性能的影响  

Effects of Different Parameters on Seismic Performance of Recycled Concrete Filled Square Steel Tubular Columns

作　　者：李兵[1] 孟爽[1] 杨永生[2] 

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168 [2]沈阳建筑大学学报编辑部,辽宁沈阳110168

出　　处：《沈阳建筑大学学报（自然科学版）》2015年第6期1066-1074,共9页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家自然科学基金项目(10902073);住房和城乡建设部科技项目(2014-K2-019;2011-K2-5)

摘　　要：目的研究方钢管再生混凝土柱在不同参数变化下的结构抗震性能.方法通过模拟计算结果与相关试验结果的比较,检验所建立的有限元模型的正确性.利用所建立的有限元模型以再生骨料取代率、截面含钢率、轴压比、长细比为参数进行有限元模拟分析.结果随着再生混凝土取代率的增加,试件的水平承载力和塑性变形能力稍有降低;随着截面含钢率的增加,试件的水平承载能力和塑性变形能力提高;随着轴压比的增加,试件的水平承载力提高,但塑性变形能力有所降低;随着长细比增加,试件的水平承载能力和塑性变形能力均有所降低.结论钢管再生混凝土柱具有良好的滞回性能,需将构件的含钢率、轴压比、长细比控制在合理范围内,构件才能达到最佳性能.The seismic performance of recycled concrete filled square steel tubular columns with different parameters was studied in this paper. A FE model for numerical analysis with ABAQUS was built and verified by test results. Using the built FE model and taking the replacement ratio of recycled concrete, the steel ratio, the axial compression ratio and the slenderness ratio as parameters, numerical simulations were carried out. It is found that with the increase of the replacement ratio of recycled concrete, the horizontal bearing capacity and the plastic deformation capacity of specimens are slightly lower. But with the increase of the steel ratio, they are increased. With the increase of the axial compression ratio, the horizontal bearing capacity is increased, but the olastic deformation capacity is decreased. With the increase of the slenderness ratio, the horizontal bearing capacity and the plastic deformation capacity are both decreased. Conclusion is that the recycled concrete filled steel tube column has good hysteretic performance. However, to get the best performance, the steel ratio, the axial compression ratio and the slenderness ratio of members should be controlled in a reasonable scope.

关 键 词：方钢管再生混凝土柱 抗震性能 不同参数 有限元分析 

分 类 号：TU392.3[建筑科学—结构工程]