基于统计分析的冻融循环作用下钢筋与混凝土粘结强度研究综述

引用文献:

柴鑫 商怀帅 解宗龙. 基于统计分析的冻融循环作用下钢筋与混凝土粘结强度研究综述[J]. 建筑结构,2023,48(12):68-73.

CHAI Xin SHANG Huaishuai XIE Zonglong. Research review of bond strength between steel bar and concrete in freeze-thaw cycles based on statistical analysis[J]. Building Structure,2023,48(12):68-73.

作者:柴鑫 商怀帅 解宗龙
单位:青岛理工大学土木工程学院 西部绿色建筑国家重点实验室 中建八局第一建设有限公司
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。
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;
作者简介:柴鑫,硕士,主要从事钢筋混凝土耐久性能研究,Email:chaixinwn@163.com。商怀帅,博士,教授,博士生导师,主要从事钢筋混凝土耐久性能研究,Email:shanghuaishuai@aliyun.com。
基金:国家自然科学基金(51778310);西部绿色建筑重点实验室(LSKF201909)。
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Research review of bond strength between steel bar and concrete in freeze-thaw cycles based on statistical analysis
CHAI Xin SHANG Huaishuai XIE Zonglong
(School of Civil Engineering, Qingdao University of Technology State Key Laboratory of Green Building in Western China No.1 Construction Co., Ltd.of China Construction Eighth Engineering Bureau)
Abstract: 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.
Keywords: freeze-thaw cycle; compressive strength of concrete; relative protective layer thickness; reinforcing bar diameter; bond strength
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