[1]陈志新,苗伟,叶勇.预制CFRP筋增强条加固素石板受弯性能有限元分析[J].华侨大学学报(自然科学版),2022,43(5):570-578.[doi:10.11830/ISSN.1000-5013.202201032]
　CHEN Zhixin,MIAO Wei,YE Yong.Finite Element Analysis of Flexural Performance of Stone Slabs Strengthened With Prefabricated CFRP-Reinforced Stone Strips[J].Journal of Huaqiao University(Natural Science),2022,43(5):570-578.[doi:10.11830/ISSN.1000-5013.202201032]
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预制CFRP筋增强条加固素石板受弯性能有限元分析()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第43卷
期数:
2022年第5期
页码:
570-578
栏目:
出版日期:
2022-09-13

文章信息/Info

Title:
Finite Element Analysis of Flexural Performance of Stone Slabs Strengthened With Prefabricated CFRP-Reinforced Stone Strips
文章编号:
1000-5013(2022)05-0570-09
作者:
陈志新1;  苗伟1;  叶勇1; 2
1. 华侨大学 土木工程学院, 福建 厦门 361021;2. 华侨大学 福建省结构工程与防灾重点实验室, 福建 厦门 361021
Author(s):
CHEN Zhixin1;  MIAO Wei1;  YE Yong1; 2
1. College of Civil Engineering, Huaqiao University, Xiamen 361021, China; 2. Key Laboratory for Structural Engineering and Disaster Prevention of Fujian Province, Huaqiao University, Xiamen 361021, China
关键词:
石结构;  石板;  CFRP筋;  加固;  受弯性能;  有限元模拟
Keywords:
stone structure;  stone slab;  carbon fiber reinforced polymer(CFRP)bar;  strengthening;  flexural performance;  finite element modelling
分类号:
TU363
DOI:
10.11830/ISSN.1000-5013.202201032
文献标志码:
A
摘要:
为研究预制碳纤维增强复合材料(CFRP)筋增强条加固石板受弯承载力的影响机理,并基于理论提出加固石板的受弯承载力计算公式,采用有限元程序对预制CFRP筋增强条加固石板受弯性能进行非线性数值模拟.在验证有限元模型可靠性的基础上,进一步开展参数分析,研究CFRP筋直径及配筋率、增强条宽度及厚度对预制CFRP筋增强条加固石板受弯承载力的影响规律.模拟结果表明:加固石板的极限承载力随CFRP筋配筋率的增大而增大,对开裂荷载的影响较小;开裂荷载随增强条宽度及厚度的增大而增大,对极限承载力的影响较小;有限元模型能模拟构件的开裂及破坏形态,且提出的计算公式能预测构件的开裂弯矩和极限弯矩.
Abstract:
In order to study the mechanism of bending capacity of stone slabs strengthened with prefabricated carbon fiber reinforced polymer(CFRP)-reinforced stone strips, based on the theory, a formula for calculating the bending capacity of the strengthened stone slabs was proposed. The finite element program was used to carry out nonlinear numerical analysis on the flexural performance of the slabs with prefabricated CFRP-reinforced stone strips. The reliability of the finite element model was validated, and then parametric analysis was carried out to investigate the influence of the diameter and reinforcement ratio of CFRP bars and width and thickness of the prefabricated stone strips on the flexural performance of the strengthened stone slabs. The simulation results show that the increase of reinforcement ratio of CFRP bars improves the ultimate bearing capacity of the strengthened stone slabs, and influences little on the cracking load. The increase of the width and thickness of the reinforcing strips improves the cracking load increases, and influences little on the ultimate bearing capacity. The finite element model can simulate the cracking and failure modes of the members, and the proposed calculation formula can predict the cracking and ultimate bending moment of the members.

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备注/Memo

备注/Memo:
收稿日期: 2022-01-13
通信作者: 叶勇(1985-),男,副教授,博士,主要从事结构工程的研究.E-mail:qzyeyong@hqu.edu.cn.
基金项目: 福建省自然科学基金面上资助项目(2018J01076)http://www.hdxb.hqu.edu.cn
更新日期/Last Update: 2022-09-20