HRB500钢筋轻骨料混凝土梁端部局部受压性能试验研究
Experimental Study on Local Compression Performance of Lightweight Aggregate Concrete Beam End with HRB500 Reinforcement
关键词：
HRB500钢筋；轻骨料混凝土；间接钢筋；局部受压承载力；计算公式
Key words：
HRB500 reinforcement; Lightweight aggregate concrete; Indirect reinforcement; Local compression bearing capacity； Calculation fo
刊期：
２０18年第1期
DOI：
文章编号：
1000-4637（2018）01-68-05
基金项目：
作者：
肖志敏1,2，邵永健1,2，朱爱萍3，劳裕华1,2，张程远1,2
单位：
1．苏州科技大学土木工程学院，215011; 2．苏州科技大学江苏省结构工程重点实验室，215011； 3.中国建筑科学研究院，北京 100013
摘要
摘 要：为研究HRB500钢筋轻骨料混凝土梁端部的局部受压性能，进行了25个试件的试验，设计参数有轻骨料混凝土强度等级、Ab/Al、Acor/Al等。通过试验，获得了试件的破坏形态与破坏特征、试件的荷载-位移曲线等试验结果。试验结果表明：在本文试验参数范围内，试件的破坏形态均为劈裂破坏；配置钢筋骨架对局压承载力有一定的提高作用，但作用有限；轻骨料混凝土强度等级与Acor/Al越高，Ab/Al越小，局压承载力越高。通过分析，得到了HRB500钢筋轻骨料混凝土梁端部局部受压承载力的计算公式，计算值与试验值吻合良好。
Abstract: In order to make understanding of the local compression bearing capacity oflightweight aggregate concrete with HRB500 reinforcement experiments on strength of lightweight aggregate concrete, Ab / Al，Acor / Al of the 25 lightweight aggregate concrete specimens are completed. Experiment achieve the failure pattern and characteristics of the specimens,load-displacement curves and so on are achieved. Experimental results show that lightweight aggregate concrete with HRB500 reinforcement cageincrease bearing capacity in a certain range.The local loading bearing capacityincreasewhen the strength of lightweight aggregate concreteraise,the Acor / Al raiseorthe Ab / Al reduce.Besides, considering the influence of the local compression bearing capacity of the HRB500reinforcementcage,the bearing capacity calculation formula fitting the test results is set up.
结论
参考文献
引用本文
肖志敏,邵永健,朱爱萍,等.HRB500钢筋轻骨料混凝土梁端部局部受压性能试验研究[J].混凝土与水泥制品,2018(1):68-72.
XIAO Z M,SHAO Y J,ZHU A P,et al.Experimental Study on Local Compression Performance of Lightweight Aggregate Concrete Beam End with HRB500 Reinforcement[J].China Concrete and Cement Products,2018(1):68-72.
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