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碳纤维增强聚合物与混凝土粘结的持续加载及温度相关变形的建模与测量

Modeling and Measurement of Sustained Loading and Temperature-Dependent Deformation of Carbon Fiber-Reinforced Polymer Bonded to Concrete.

作者信息

Jeong Yoseok, Lee Jaeha, Kim WooSeok

机构信息

Department of Civil Engineering, Chungnam National University, Daejeon 305-764, Korea.

Department of Civil Engineering, Korea Maritime and Ocean University, Busan 606-794, Korea.

出版信息

Materials (Basel). 2015 Jan 29;8(2):435-450. doi: 10.3390/ma8020435.

DOI:10.3390/ma8020435
PMID:28787948
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5455269/
Abstract

This paper aims at presenting the effects of short-term sustained load and temperature on time-dependent deformation of carbon fiber-reinforced polymer (CFRP) bonded to concrete and pull-off strength at room temperature after the sustained loading period. The approach involves experimental and numerical analysis. Single-lap shear specimens were used to evaluate temperature and short-term sustained loading effects on time-dependent behavior under sustained loading and debonding behavior under pull-off loading after a sustained loading period. The numerical model was parameterized with experiments on the concrete, FRP, and epoxy. Good correlation was seen between the numerical results and single-lap shear experiments. Sensitivity studies shed light on the influence of temperature, epoxy modulus, and epoxy thickness on the redistribution of interfacial shear stress during sustained loading. This investigation confirms the hypothesis that interfacial stress redistribution can occur due to sustained load and elevated temperature and its effect can be significant.

摘要

本文旨在呈现短期持续荷载和温度对粘结在混凝土上的碳纤维增强聚合物（CFRP）随时间变化的变形以及持续荷载期后室温下的拉拔强度的影响。该方法包括实验分析和数值分析。采用单搭接剪切试件来评估温度和短期持续荷载对持续荷载作用下随时间变化的性能以及持续荷载期后拉拔荷载作用下的脱粘性能的影响。通过对混凝土、纤维增强复合材料（FRP）和环氧树脂进行实验对数值模型进行了参数化。数值结果与单搭接剪切实验之间呈现出良好的相关性。敏感性研究揭示了温度、环氧树脂模量和环氧树脂厚度对持续荷载作用下界面剪应力重新分布的影响。本研究证实了由于持续荷载和温度升高会发生界面应力重新分布这一假设，且其影响可能是显著的。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b6dd/5455269/d557aaeb5784/materials-08-00435-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b6dd/5455269/8ab45325d61f/materials-08-00435-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b6dd/5455269/22e7b8f5d706/materials-08-00435-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b6dd/5455269/1c71c4e40a04/materials-08-00435-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b6dd/5455269/449f51d1527f/materials-08-00435-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b6dd/5455269/3f485c2cba42/materials-08-00435-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b6dd/5455269/bd781e896c47/materials-08-00435-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b6dd/5455269/cc65f989fcdc/materials-08-00435-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b6dd/5455269/dcb0c0b46e38/materials-08-00435-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b6dd/5455269/b6d7af008474/materials-08-00435-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b6dd/5455269/c99a0d8eb28c/materials-08-00435-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b6dd/5455269/552e8cf666c2/materials-08-00435-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b6dd/5455269/d557aaeb5784/materials-08-00435-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b6dd/5455269/8ab45325d61f/materials-08-00435-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b6dd/5455269/22e7b8f5d706/materials-08-00435-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b6dd/5455269/1c71c4e40a04/materials-08-00435-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b6dd/5455269/449f51d1527f/materials-08-00435-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b6dd/5455269/3f485c2cba42/materials-08-00435-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b6dd/5455269/bd781e896c47/materials-08-00435-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b6dd/5455269/cc65f989fcdc/materials-08-00435-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b6dd/5455269/dcb0c0b46e38/materials-08-00435-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b6dd/5455269/b6d7af008474/materials-08-00435-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b6dd/5455269/c99a0d8eb28c/materials-08-00435-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b6dd/5455269/552e8cf666c2/materials-08-00435-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b6dd/5455269/d557aaeb5784/materials-08-00435-g012.jpg

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