钢管再生大骨料自密实混凝土压弯构件性能研究  

Research on the Performance of Self-compacting Concrete Compression-flexure Member of Recycled Large Aggregate of Steel Pipe

作　　者：邹磊堂 康晶 李华钰 王建超[3] Zou Leitang;Kang Jing;Li Huayu;Wang Jianchao(Liaoning Branch of China Shanghai Architectural Design&Research Institute Co.,Ltd.,Shenyang 110000,China;Shenyang Municipal Engineering Design&Research Institute Co.,Ltd.,Shenyang 110015,China;College of Civil Engineering,Shenyang Jianzhu University,Shenyang 110168,China)

机构地区：[1]中国建筑上海设计研究院有限公司辽宁分公司,沈阳市110000 [2]沈阳市市政工程设计研究院有限公司,沈阳市110015 [3]沈阳建筑大学土木工程学院,沈阳市110168

出　　处：《北方交通》2024年第6期23-27,共5页Northern Communications

摘　　要：为提高废弃骨料利用率,增加再生混凝土强度,文章对钢管再生大骨料自密实混凝土压弯构件的性能展开研究。选取含钢率、钢材屈服强度、再生大骨料强度、自密实混凝土强度等影响因素,绘制不同影响因素下钢管再生大骨料自密实混凝土构件的N-M相关曲线。研究结果表明:增加含钢率和钢材屈服强度,会使曲线与坐标轴所围面积增大,界限破坏点随之增大;再生大骨料强度与自密实混凝土强度在大偏心受压阶段产生的影响效果减弱。基于研究数据,推导得出钢管再生大骨料自密实混凝土构件N-M相关方程的理论计算公式。In order to improve the utilization rate of waste aggregate and increase the strength of recycled concrete,the performance of self-compacting concrete compression-flexure member of the recycled large aggregate of steel pipe is studied.The influencing factors such as steel ratio,steel yield strength,strength of recycled large aggregate,and strength of self-compacting concrete and so on are selected,so as to draw the N-M correlation curves of the self-compacting concrete member of recycled large aggregate of steel pipe under different influencing factors.The research results show that:increasing the steel ratio and steel yield strength will increase the area enclosed by the curve and the coordinate axis,and the boundary breaking point will increase accordingly.The influence effect of the strength of recycled large aggregate and the strength of self-compacting concrete in the large eccentric compression stage is weakened.Based on the research data,the theoretical calculation formula of the N-M correlation equation of self-compacting concrete member of recycled large aggregate of steel pipe is derived.

关 键 词：压弯构件 影响因素 界限破坏 理论计算 

分 类 号：TU528[建筑科学—建筑技术科学]