混凝土高温损伤对BFRP有效极限拉应变的影响_《混凝土与水泥制品》杂志社

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发布时间：2020-01-06 00:00:00

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混凝土高温损伤对BFRP有效极限拉应变的影响

Influence of high-temperature damage to concrete on effective ultimate tensile strain of BFRP

2025年第4期

纤维增强复合材料（FRP）；混凝土柱；高温损伤；有效拉应变；计算模型

Fibe-reinforced polymer (FRP); Concrete column; High-temperature damage; Effective tensile strain; Calculation model

2025年第4期

10.19761/j.1000-4637.2025.04.065.07

国家自然科学基金项目（51708349、11672185）；广西住房城乡建设科学技术计划项目（GJK202402H202369404）。

欧阳利军1，阚晨超1，刘卫东1，2，蒙圣荣2，*

1.上海理工大学环境与建筑学院，上海 200093；2.广西城市职业大学，广西崇左 532199

欧阳利军1，阚晨超1，刘卫东1，2，蒙圣荣2，*

欧阳利军,阚晨超,刘卫东,等.混凝土高温损伤对BFRP有效极限拉应变的影响[J].混凝土与水泥制品,2025(4):65-71.

OUYANG L J,KAN C C,LIU W D,et al.Influence of high-temperature damage to concrete on effective ultimate tensile strain of BFRP[J].China Concrete and Cement Products,2025(4):65-71.

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1000

英文名 : Influence of high-temperature damage to concrete on effective ultimate tensile strain of BFRP

刊期 : 2025年第4期

关键词 : 纤维增强复合材料（FRP）；混凝土柱；高温损伤；有效拉应变；计算模型

Key words : Fibe-reinforced polymer (FRP); Concrete column; High-temperature damage; Effective tensile strain; Calculation model

刊期 : 2025年第4期

DOI : 10.19761/j.1000-4637.2025.04.065.07

文章编号 :

基金项目 : 国家自然科学基金项目（51708349、11672185）；广西住房城乡建设科学技术计划项目（GJK202402H202369404）。

作者 : 欧阳利军1，阚晨超1，刘卫东1，2，蒙圣荣2，*

单位 : 1.上海理工大学环境与建筑学院，上海 200093；2.广西城市职业大学，广西崇左 532199

欧阳利军1，阚晨超1，刘卫东1，2，蒙圣荣2，*

欧阳利军,阚晨超,刘卫东,等.混凝土高温损伤对BFRP有效极限拉应变的影响[J].混凝土与水泥制品,2025(4):65-71.

OUYANG L J,KAN C C,LIU W D,et al.Influence of high-temperature damage to concrete on effective ultimate tensile strain of BFRP[J].China Concrete and Cement Products,2025(4):65-71.

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摘要

参数

结论

参考文献

引用本文

摘要：对玄武岩纤维布（BFRP）约束高温损伤混凝土柱进行了轴压试验，研究了损伤温度（200、400、600、800 ℃）和约束层数（0、2、3、4层）对试件破坏形态、BFRP极限拉应变等性能的影响规律，建立了BFRP有效拉应变系数的计算模型。结果表明：随着损伤温度的增加，BFRP有效拉应变系数增大；随着约束层数的增加，除了损伤温度为200 ℃时的BFRP有效拉应变系数基本无变化外，其余损伤温度下的BFRP有效拉应变系数均减小；建立的纤维增强复合材料（FRP）约束高温损伤混凝土柱的FRP有效拉应变系数计算模型的精度较高。

Abstract: Axial compression tests were performed on basalt fiber-reinforced polymer (BFRP) confined high-temperature damaged concrete columns to investigate the effects of damage temperature (200, 400, 600, 800 ℃) and constraint layer numbers (0, 2, 3, 4 layers) on the failure mode of specimens and the ultimate tensile strain of BFRP. A calculation model for the effective tensile strain coefficient of BFRP was established. The results indicate that as the damage temperature increases, the effective tensile strain coefficient of BFRP increases. As the number of constraint layers increases, except for the effective tensile strain coefficient of BFRP at a damage temperature of 200 ℃, which remains largely unchanged, the effective tensile strain coefficients of BFRP at all other damage temperatures decrease. The developed model for calculating the effective tensile strain coefficient of FRP for FRP confined high-temperature damaged concrete columns exhibits high accuracy.

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