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、A_b/A_l、A_(cor)/A_l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A_(cor)/A_l越高,A_b/A_l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。
In order to make understanding of the local compression bearing capacity oflightweight aggregate concrete with HRB500 reinforcement experiments on strength of lightweight aggregate concrete, A b / A l ,A cor / A l 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 HRBSO0 reinforcement cageincrease bearing capacity in a certain range.The local loading bearing capacityincreasewhen the strength of lightweight aggregate concreteraise,the A cor / Al raiseorthe Ab / A l 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.
出处
《混凝土与水泥制品》
北大核心
2018年第1期68-72,共5页
China Concrete and Cement Products
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
HRB500 reinforcement
Lightweight aggregate concrete
Indirect reinforcement
Local compression bearing capacity
Calculation formula
