摘要
粘结力的存在是钢筋与混凝土共同发挥作用的基础,而冻融循环作用会对二者的粘结强度产生影响。依据已有的冻融循环作用下钢筋与混凝土粘结强度试验数据,通过拟合公式分别分析了冻融循环次数、混凝土抗压强度、混凝土相对保护层厚度以及钢筋直径对粘结强度的影响。最后建立了一个统一的包括多种影响因素在内的粘结强度预测模型,并通过与实际试验数据相比较发现拟合程度较好。
The existence of bond is the basis for reinforcing bar and concrete to work together,and the freeze-thaw cycles will affect the bond strength of them.According to the existing experimental data of bond strength between reinforcing bar and concrete under freeze-thaw cycles,the influences of freeze-thaw cycles,concrete compressive strength,concrete relative protective layer thickness and reinforcing bar diameter on bond strength were analyzed by fitting formulas.Finally,a unified bond strength prediction model including a variety of influencing factors was established.By comparing with the actual test data,it is found that the fitting degree is better.
作者
柴鑫
商怀帅
解宗龙
CHAI Xin;SHANG Huaishuai;XIE Zonglong(School of Civil Engineering,Qingdao University of Technology,Qingdao 266011,China;State Key Laboratory of Green Building in Western China,Xi’an 710055,China;No.1 Construction Co.,Ltd.of China Construction Eighth Engineering Bureau,Jinan 250014,China)
出处
《建筑结构》
北大核心
2023年第12期68-73,共6页
Building Structure
基金
国家自然科学基金(51778310)
西部绿色建筑重点实验室(LSKF201909)。
关键词
冻融循环
混凝土抗压强度
相对保护层厚度
钢筋直径
粘结强度
freeze-thaw cycle
compressive strength of concrete
relative protective layer thickness
reinforcing bar diameter
bond strength
