吉首大学学报（自然科学版）2023，Vol.44Issue(3)：39-45,7.DOI:10.13438/j.cnki.jdzk.2023.03.006
CFRP布加固指接木梁的抗弯性能
Experimental Study on Flexural Behavior of Finger-Jointed Timber Beams Strengthened with CFRP Sheets
摘要
Abstract
In order to improve the flexural strength of finger-jointed timber beams,three groups of timber beams were designed and manufactured.Through four-point compression test,the flexural performance of solid timber beams,finger-jointed timber beams and CFRP reinforced finger-joint beams were com-pared,and the influence of finger-jointed joints on the fracture mode of timber beams was analyzed.The displacement load curve of finger-jointed timber beams and the displacement load curve of finger-jointed timber beams were obtained,and the corresponding distinction was given for the failure characteristics of each type.Therefore,the feasibility of using CFRP to reinforce finger-joint is proposed.The test results show that the appearance of finger-joint has obvious influence on the bending failure process of timber.The appearance of finger-joint makes the fracture mode of timber change from ductile fracture to brittle fracture,and the flexural strength of finger-joint timber beam is significantly improved by using CFRP cloth reinforcement.关键词
指接木梁/断裂模式/抗弯性能/CFRP加固Key words
finger joint timber beam/fracture mode/flexural behavior/CFRP reinforcement分类
建筑与水利引用本文复制引用
王建省,贾玉梦,薛美慧..CFRP布加固指接木梁的抗弯性能[J].吉首大学学报（自然科学版）,2023,44(3):39-45,7.基金项目
2021 Undergraduate Course Ideological and Political Demonstration Course-Theoretical Mechanics(108051360022XN569) （108051360022XN569）
2022 Great Innovation Project-Frame Bridge Structural Engineering Research(108051360022XN388) （108051360022XN388）
National Natural Science Foundation of China(11572001,51478004) （11572001,51478004）
