肖志敏1,2,邵永健1,2,朱爱萍3,劳裕华1,2,张程远1,2
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.
HRB500钢筋轻骨料混凝土梁端部局部受压性能试验研究
肖志敏1,2,邵永健1,2,朱爱萍3,劳裕华1,2,张程远1,2
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.
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.
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