再生混凝土大偏压长柱受力性能试验  

The Experimental Analysis on the Big Eccentric Compression of Recycled Concrete Long-Columns

作　　者：周静海[1] 于洪洋[2] 杨永生[3] 

机构地区：[1]沈阳建筑大学科技产业处,辽宁沈阳110168 [2]沈阳建筑大学土木工程学院,辽宁沈阳110168 [3]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）》2010年第2期255-260,共6页Journal of Shenyang Jianzhu University：Natural Science

基　　金：住房和城乡建设部攻关项目(06-k6-08);辽宁省自然科学基金项目(20082010)

摘　　要：目的研究不同掺入量下再生混凝土长柱的变形能力和承载能力.方法采用改性处理后的再生粗骨料,按照再生粗骨料掺入量0、10%、20%、30%和40%制作了长细比为9的共五组15个试件,在5000kN液压式万能试验机上采用分级加载的方式进行加载,直至柱子破坏.结果再生混凝土柱破坏机理同普通混凝土柱子基本一致,但变形能力较普通混凝土大,随着再生粗骨料掺入量的增加,承载力无规律下降,当再生粗骨料掺入量为40%时,承载力降低了7.29%.结论再生混凝土长柱可以按照现行规范进行计算,试验结果为其工程实际应用提供了参考依据.This paper researches on the deformability and compression performance of the recycled concrete long-colunms, which adopts recycled coarse aggregate, compared with ordinary concrete columns. Fifteen long-colunms with the long and thin ratio 9 are divided into five groups, according to the replacement rate of recycled aggregate 0,10,20,30,40 percentages. The recycled concrete columns load grading up to being destroyed with 5,000 kN of all-purpose hydraulic experimental machine. It is found that mechanism is the same to the ordinary concrete columns, but the deformed ability is bigger than the ordinary concrete, during the replacement rate of recycled coarse aggregate increasing, together with the beating capability to drop in disor- der. Its bearing capability reduces 7.29 percentage with 40 percentage of recycled coarse aggregate input. Through analysis on the experimental data, the recycled concrete column can be calculated according to the current norm, and the experimental results serving reference basis for the structural project.

关 键 词：再生混凝土 再生骨料 长柱 大偏压 

分 类 号：TU375[建筑科学—结构工程]