重庆大学学报2017，Vol.40Issue(1)：57-64,8.DOI:10.11835/j.issn.1000-582X.2017.01.007
多点锚固预应力CFRP带加固T梁的有限元分析
FEM analysis of RC T-beams strengthened with unbounded pre-stressed CFRP belts anchored on multiple points
摘要
Abstract
Four simply supported reinforced concrete T-beams strengthed with externally unbonded prestressed CFRP belt were simulated by nonlinear finite element analysis using the general purpose commerical program ABAQUS.Three beams were strengthed on each side symmetrically and one beam was strengthed on bottom based on a four-point tooth waveform anchor.The analytical results show good agreement with test results on flexural capacity,elastic deformation,and ultimate flexural capacity. However the inelastic deformation of the analytical simulation has significant discrpency with that observed in the test.Therefore,to some extent,the finite element analysis can be an effective alternative to the experimental test.Based on the parameters of TL3 beam which shows the best match between the finite element analysis and the test,“two-point anchoring”and “four-point anchoring”models were designed and simulated.By comparing the results of “two-point anchoring”and “four-point anchoring”models,the method for changing the amount of CFRP and the number of anchor points based on the moment of member can not only ensure non-reduction of strengthing effect,but also can save CFRP material.关键词
CFRP/预应力/ABAQUS/有限元分析Key words
CFRP/pre-stressing/ABAQUS/finite element analysis分类
信息技术与安全科学引用本文复制引用
陈小英,卓静,李唐宁,陈明政,朱浪涛..多点锚固预应力CFRP带加固T梁的有限元分析[J].重庆大学学报,2017,40(1):57-64,8.基金项目
国家自然科学基金面上资助项目（51078370）；中央高校基本科研业务费专项资金资助项目（310821161101）；重庆市教委科学技术研究项目（KJ1501309）；重庆科技学院校内科研基金资助项目（CK2016Z21）。Support by National Natural Science Foundation of China （51078370），the Fundamental Research Funds for the Central Universities of China（310821161101），Science and Techonlogy Research Project of Chongqing Education Commission（KJI1501309），Research Foundation of Chongqing Univesity of Science and Technology（CK2013Z21）． （）
