- 摘 要
-
(1 天津大学建筑工程学院, 天津 300072;2 滨海土木工程与安全教育部重点实验室(天津大学), 天津 300072)
[摘要]通过对3个配有HTB650级纵筋及HTHB900级箍筋的混凝土柱进行低周反复加载试验,研究了配置高强钢筋的混凝土构件的抗震性能。以实际工程中某12层框架结构为背景,分别设计了配有高强钢筋与普通三级钢筋的两个框架结构主楼,利用有限元软件对其进行弹塑性分析。结果表明:配置高强钢筋的试件与配置普通三级钢筋的试件具有相近的力学特性和变化规律,但是配置高强钢筋的试件可以节约用钢量,尤其体现在箍筋用量上;高强钢筋模型与普通三级钢筋模型相比,自振周期略长,基底剪力略小;二者的最大顶点位移和最大层间位移角较为接近。
[关键词]高强钢筋; 抗震性能; 拟静力试验; 弹塑性分析
中图分类号:TU375 文献标识码:A 文章编号:1002-848X(2015)08-0030-05
Seismic behavior study on concrete structures reinforced with highstrength steel bars
Ding Hongyan1,2, Liu Yuan1, Guo Yaohua1
(1 School of Civil Engineering, Tianjin University, Tianjin 300072, China;
2 Key Laboratory of Coast Civil Structure and Safety, Ministry of Education(Tianjin University), Tianjin 300072, China)
Abstract:The seismic behaviors of three concrete columns reinforced with highstrength steel stirrups of HTB650 grade and HTHB900 grade were investigated under low cyclic reversed loading test. An 12story frame structure in practical project was taken as example, and two frame structure buildings were designed with highstrength steel bars and ordinary third grade steel bars respectively. Elasticplastic analysis was carried out by finite element analysis software. The results show that the specimens with highstrength steel bars and the specimens with ordinary third grade steel bars have similar mechanical properties and variation, but the former can save the amount of steel, particularly in stirrups consumption. Compared with the ordinary steel bar model, highstrength steel bar model has longer natural period and smaller base seismic force, while the maximum top displacement and maximum drift angle are closer.
Keywords: highstrength steel bar; seismic behavior; pseudostatic test; elasticplastic analysis通讯作者:郭耀华,博士,Email: guoyaohua38@163.com。
参考文献
[1]叶列平,ASAD U Q,马千里,等. 高强钢筋对框架结构抗震破坏机制和性能控制的研究[J]. 工程抗震与加固改造,2006,28(1):1824.
[2]裴智,王友权,王学忠,等. HRB500钢筋的研究开发与应用[J]. 建筑结构,2003,33(8):2829.
[3]XIAO Y, MARTIROSSYAN A. Seismic performance of highstrength concrete columns[J]. Structural Engineering,1998,124(3):241251.
[4]王铁成,郝贵强,赵海龙,等. 反复荷载作用下纤维增强异形柱的抗震性能试验[J]. 天津大学学报:自然科学版,2010,43(11):957963.