Reliability analysis of fatigue life of self-compacting concrete subｊected to freeze-thaw damage

被引：0

作者：

Zhu X. ^{[1
]}

Chen X. ^{[1
]}

Pan F. ^{[1
]}

Ning Y. ^{[2
]}

Chen C. ^{[1
]}

机构：

[1] College of Civil and Transportation Engineering, Hohai University, Nanjing

[2] Zhejiang Communications Construction Group Co., Ltd., Hangzhou

来源：

Harbin Gongye Daxue Xuebao/Journal of Harbin Institute of Technology | 2023年 / 55卷 / 03期

关键词：

four-point flexural fatigue; freeze-thaw damage; P[!sub]f[!/sub]-S-N curves; safety factor; self-compacting concrete; Weibull distribution;

D O I：

10.11918/202108051

中图分类号：

学科分类号：

摘要：

In order to study the influence of freeze-thaw (FT) damage on the flexural fatigue life of self-compacting concrete, the four-point flexural fatigue tests at different stress levels were carried out on concrete beams subjected to different FT cycles, and the Weibull distribution parameters of flexural fatigue life of concrete beams were obtained by the method of moments. The prediction models for the fatigue life of concrete beams subjected to different FT cycles under different reliability probabilities were established. Results showed that the probability distribution of fatigue life for self-compacting concrete subjected to different FT cycles could be characterized by two-parameter Weibull distribution. The dispersion of fatigue life of self-compacting concrete increased with the increase in FT cycles and decreased with the increase in stress levels. On the basis of the test data, the Pf-S-N curves of self-compacting concrete were generated, which can accurately predict the flexural fatigue life of self-compacting concrete subjected to different FT cycles. The safety factor required for the fatigue life of self-compacting concrete increased with the increase in FT cycles, which indicates that for the self-compacting concrete suffering from more serious FT damage, a larger safety factor should be adopted to ensure the safe operation of the structure. © 2023 Harbin Institute of Technology. All rights reserved.

引用

页码：118 / 127

页数：9

共 32 条

[1]

YEHIA S, DOUBA A E, ABDULLAHI O, Et al., Mechanical and durability evaluation of fiber-reinforced self-compacting concrete, Construction and Building Materials, 121, (2016)

[2]

JI Wenyu, WANG Jue, LI Wangwang, Experimental analysis on bending fatigue performance of prestressed RPC-NC composite beam, Journal of Harbin Institute of Technology, 51, 6, (2019)

[3]

DING Z, FENG D C, REN X, Et al., Physically based constitutive modeling of concrete fatigue and practical numerical method for cyclic loading simulation, Engineering Failure Analysis, 101, (2019)

[4]

FATHIMA K M P, KISHEN J M C., A thermodynamic framework for the evolution of damage in concrete under fatigue, Archive of Applied Mechanics, 85, 7, (2015)

[5]

YOU Fan, NIAN Mengfei, ZHENG Jianlan, Et al., Study on flexural fatigue performance of recycled aggregate concrete, Journal of Building Structures, 43, 4, (2022)

[6]

LI Beixing, YIN Liyuan, FAN Lilong, Analysis on flexural fatigue performance of manufactured sand concrete, Journal of Building Materials, 20, 5, (2017)

[7]

GOEL S, SINGH S P., Fatigue performance of plain and steel fibre reinforced self compacting concrete using S-N relationship, Engineering Structures, 74, (2014)

[8]

CAO Wanlin, ZHAO Yuxi, YE Taoping, A review of recent advances in the long-term working characteristic of recycled concrete structure, Journal of Harbin Institute of Technology, 51, 6, (2019)

[9]

LONG Guangcheng, LIU He, MA Kunlin, Et al., Uniaxial compression damage constitutive model of concrete subjected to freezing and thawing, Journal of Central South University (Science and Technology), 49, 8, (2018)

[10]

HE Chenglin, HAN Fengxia, LIU Qing, Et al., Study on the flexural mechanical properties of self-compacting concrete beams under the action of freeze-thaw, China Sciencepaper, 15, 10, (2020)

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