活性粉末混凝土柱恢复力模型试验研究  

Experimental study on restoring force model of reinforced reactive powder concrete columns

作　　者：王德弘[1,2] 鞠彦忠[1] 郑文忠[2] 

机构地区：[1]东北电力大学建筑工程学院,吉林吉林132012 [2]哈尔滨工业大学土木工程学院,黑龙江哈尔滨150090

出　　处：《中南大学学报（自然科学版）》2015年第9期3454-3460,共7页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(50878040);国家教育部长江学者奖励计划项目(2009-37)~~

摘　　要：进行18个活性粉末混凝土(RPC)配筋柱的低周反复加载试验,研究轴压比、纵筋配筋率和配箍率等对活性粉末混凝土配筋柱强度、刚度和滞回特性的影响规律,通过理论分析和对试验结果的回归分析,建立活性粉末混凝土配筋柱的三线型恢复力模型,并给出各特征点参数的计算方法。研究结果表明:该恢复力模型能够反映轴压比、纵筋配筋率和配箍率对滞回特性的影响,与试验结果吻合较好,可为活性粉末混凝土结构的非线性动力分析提供参考,为活性粉末混凝土柱类构件的抗震设计提供参考。Cyclic loading tests of 18 reinforced reactive powder concrete（RPC） columns were conducted, the effects of axial compression ratio, longitudinal reinforcement ratio and stirrup ratio on strength, rigidity and hysteretic characteristics were discussed. Through theory analysis and regressive analysis of experimental results, a three-line restoring force model was proposed, and calculation method was presented. The results show that the proposed restoring force model reflects the effect of axial compression ratio, longitudinal reinforcement ratio and stirrup ratio on the hysteretic characteristics of reinforced reactive powder concrete columns, which fits in well with the experimental results of reinforced reactive powder concrete columns. The proposed restoring force model can be used for the nonlinear analysis of reinforced reactive powder concrete structures, which can be referenced to in the designing of RPC columns.

关 键 词：活性粉末混凝土 框架柱 恢复力模型 骨架曲线 滞回特性 

分 类 号：U442.55[建筑科学—桥梁与隧道工程] TU528.572[交通运输工程—道路与铁道工程]