西南师范大学学报(自然科学版)
西南師範大學學報(自然科學版)
서남사범대학학보(자연과학판)
JOURNAL OF SOUTHWEST CHINA NORMAL UNIVERSITY
2014年
8期
90-94
,共5页
CFRP%钢筋混凝土梁%层数%有限元模拟%承载力%变形性能%裂缝
CFRP%鋼觔混凝土樑%層數%有限元模擬%承載力%變形性能%裂縫
CFRP%강근혼응토량%층수%유한원모의%승재력%변형성능%렬봉
CFRP%reinforced concrete beam%Layers%Finite Element method%bearing capacity%deforma-tion performance%cracking
碳纤维增强聚合物(CFRP)加固技术日趋成熟,但加固钢筋混凝土梁所需CFRP的层数却常以经验确定,导致CFRP粘贴层数偏多,趋于保守,造成浪费。以实测材料参数为依据,通过ANSYS有限元模型,计算粘贴不同层数CFRP后梁的受力性能,找到最佳粘贴层数,为工程实践提供参考。计算结果表明,粘贴CFRP的梁承载力及变形性能大幅提高,通过分析,提出两点主要影响因素及其可能导致的结果,并推测了试验裂缝的分布模式及发展状态。
碳纖維增彊聚閤物(CFRP)加固技術日趨成熟,但加固鋼觔混凝土樑所需CFRP的層數卻常以經驗確定,導緻CFRP粘貼層數偏多,趨于保守,造成浪費。以實測材料參數為依據,通過ANSYS有限元模型,計算粘貼不同層數CFRP後樑的受力性能,找到最佳粘貼層數,為工程實踐提供參攷。計算結果錶明,粘貼CFRP的樑承載力及變形性能大幅提高,通過分析,提齣兩點主要影響因素及其可能導緻的結果,併推測瞭試驗裂縫的分佈模式及髮展狀態。
탄섬유증강취합물(CFRP)가고기술일추성숙,단가고강근혼응토량소수CFRP적층수각상이경험학정,도치CFRP점첩층수편다,추우보수,조성낭비。이실측재료삼수위의거,통과ANSYS유한원모형,계산점첩불동층수CFRP후량적수력성능,조도최가점첩층수,위공정실천제공삼고。계산결과표명,점첩CFRP적량승재력급변형성능대폭제고,통과분석,제출량점주요영향인소급기가능도치적결과,병추측료시험렬봉적분포모식급발전상태。
Carbon-fiber-reinforced polymer (CFRP) reinforcement technology maturing ,but the number of layers needed by CFRP strengthened reinforced concrete beams usually determined empirically ,conserva-tively ,resulting in unnecessary waste .In this paper ,ANSYS finite element models based on the measured material parameters calculate the mechanical properties of reinforced beams pasted different layers of CFRP ,and find the most suitable layers to provide reference for engineering practices .The results show that bearing capacity and deformation properties of CFRP pasted beams substantially increased .Two main factors and possible results been proposed through analysis ,and speculated the distribution patterns of cracks and development of the state test .