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钢筋再生混凝土柱压弯性能的重复荷载试验
引用本文:张建伟,申宏权,曹万林,董宏英.钢筋再生混凝土柱压弯性能的重复荷载试验[J].北京工业大学学报,2014(11):1673-1679.
作者姓名:张建伟  申宏权  曹万林  董宏英
作者单位:北京工业大学 建筑工程学院,北京,100124;北京工业大学 建筑工程学院,北京,100124;北京工业大学 建筑工程学院,北京,100124;北京工业大学 建筑工程学院,北京,100124
基金项目:国家科技支撑计划课题资助项目,北京市自然科学基金资助项目,北京市高校中青年骨干人才培养计划资助项目
摘    要:为减小尺寸效应影响,了解符合实际工程的钢筋再生混凝土柱压弯性能,进行了4根截面尺寸为600 mm×600 mm、不同再生粗骨料取代率、不同配箍率的钢筋混凝土方形截面柱大偏心受压重复荷载试验,研究了其受压破坏形态、承载力、侧向受弯刚度、钢筋及混凝土应变规律.结果表明:钢筋再生混凝土大偏心受压柱的破坏过程、破坏形态、侧向受弯刚度退化、钢筋和混凝土的应变与普通钢筋混凝土柱的区别不明显.参照现行《混凝土结构设计规范》(GB50010—2010)的相关计算公式,计算钢筋再生混凝土大偏心受压柱承载力,其计算结果与试验结果符合较好.

关 键 词:再生混凝土柱  大偏心受压  力学性能  重复荷载试验

Experimental Study on Mechanical Behavior of Reinforced Recycled Concrete Columns Under Repeated Large Eccentric Loading
ZHANG Jian-wei,SHEN Hong-quan,CAO Wan-lin,DONG Hong-ying.Experimental Study on Mechanical Behavior of Reinforced Recycled Concrete Columns Under Repeated Large Eccentric Loading[J].Journal of Beijing Polytechnic University,2014(11):1673-1679.
Authors:ZHANG Jian-wei  SHEN Hong-quan  CAO Wan-lin  DONG Hong-ying
Affiliation:ZHANG Jian-wei;SHEN Hong-quan;CAO Wan-lin;DONG Hong-ying;College of Architecture and Civil Engineering,Beijing University of Technology;
Abstract:To reduce the size effect and investigate the bending performance of reinforced recycled concrete columns that conform to practical projects,the paper presents a repeated large eccentric load test on four reinforced concrete columns with a square section size of 600 mm × 600 mm,different recycled coarse aggregate replacement ratios,and different transverse bar ratios. The compression failure patterns,load-bearing capacity,lateral bending stiffness and the strain regularities of the steel bar and concrete were analyzed. Results show that the differences in failure processes,failure modes,degradation of lateral bending stiffness and strain of the steel bar and concrete between reinforced recycled concrete columns and reinforced normal concrete columns under large eccentric compression are not obvious. With reference to the related calculation formula of the current code for concrete design of structure GB50010—2010,the paper calculates the load-bearing capacity of recycled concrete columns under large eccentric compression,and the results agree well with the test results.
Keywords:recycled concrete column  large eccentric compression  mechanical properties  repeated load test
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