不同轴压比再生混凝土框架柱抗震性能试验研究  

Experimental study of seismic behavior of recycled concrete frame columns with different axial compression ratios

作　　者：张静[1,2] 周安[1,3] 柳炳康[1,3] 陈丽华[1,3] 高斌斌[1,3] 

机构地区：[1]合肥工业大学土木与水利工程学院,安徽合肥230009 [2]六安职业技术学院建筑工程系,安徽六安237158 [3]合肥工业大学土木工程结构与材料安徽省重点实验室,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2012年第4期503-507,566,共6页Journal of Hefei University of Technology：Natural Science

基　　金：安徽省自然科学基金资助项目(090414163)

摘　　要：文章通过对5个粗骨料取代率为100%再生混凝土框架柱低周反复荷载下的抗震性能试验,研究各试件的破坏形式、滞回特性、延性性能、承载能力,分析轴压比对试件的抗震性能的影响。结果表明:在剪跨比、配箍率、混凝土强度都一致的条件下,随着轴压比的增加,试件的滞回曲线越来越扁平,耗能能力、延性及极限承载力不断下降。再生混凝土框架柱抗震性能的变化规律与普通混凝土柱基本相似,略低于普通混凝土柱构件,因而可以确定再生混凝土框架柱适用于低轴压结构。Based on the experimental study of five concrete frame columns with 100% replacement ratio of recycled coarse aggregates under the low cyclic loading test, the failure shapes, hysteretic charac- teristics, ductility factors, load carrying capacity and the relative effects from the variation of axial compression ratios on the seismic behavior of the columns were discussed separately. The testing re- sults indicated that the hysteretic curves became flat step by step and the energy dissipation capacity,ductility and ultimate bearing capacity gradually dropped down with the increase of axial compression ratios at th~ specified condition of the same shear span, stirrup reinforcement ratio and concrete strength. Basically, the seismic behavior of recycled concrete frame columns are similar to or a little worse than those of the normal reinforced concrete columns, indicating that the recycled concrete can be applied to the concrete columns structures with special low axial compression ratio.

关 键 词：再生混凝土 框架柱 轴压比 抗震性能 

分 类 号：TU375.4[建筑科学—结构工程]