碳纤维布加固达到承载力极限状态混凝土梁有限元分析  

Finite Element Analysis of Concrete Beam Strengthened by CFRP with the Ultimate Bearing Capacity

作　　者：赵士永 崔梦飞 褚少辉 赵存宝[5] Zhao Shi-yong;Cui Meng-fei;Chu Shao-hui;Zhao Cun-bao(Hebei Academy of Building Research,Shijiazhuang 050021,China;School of Civil and Transportation,Hebei University of Technology,Tianjin 300401,China;Hebei Building Research Technology Co.Ltd,Shijiazhuang 050021,China;The Engineering Technical Research Centre of Comprehensive Reconstruction Existing Buildings of Hebei Province,Shijiazhuang 0500214,China;Shijiazhuang Tiedao University,Shijiazhuang 050043,China)

机构地区：[1]河北省建筑科学研究院,河北石家庄050021 [2]河北省既有建筑综合改造工程技术研究中心,河北石家庄0500215 [3]河北工业大学土木与交通学院,天津300401 [4]河北省建研科技有限公司,河北石家庄050021 [5]石家庄铁道大学,河北石家庄050043

出　　处：《工程抗震与加固改造》2018年第6期119-124,共6页Earthquake Resistant Engineering and Retrofitting

基　　金：国家重点研发计划(2016YFC0802207)

摘　　要：我国建筑物基数较大,其中一些建筑物的部分构件可能已经达到了极限承载力状态,对于此类构件的加固是非常重要的。碳纤维布作为一种新型材料对混凝土梁的加固有良好的效果。为了更好地研究分析碳纤维布加固达到承载力极限状态混凝土梁的力学性能,本文利用有限元软件ANSYS对试验梁的抗弯性能进行模拟分析,在试验的基础上,建立分析模型,并通过单元生死来实现粘贴碳纤维布的过程。ANSYS分析结果与试验结果基本一致,以此确定了ANSYS软件的可行性。以该模型为基础,在混凝土梁达到承载力极限状态之后,通过改变卸载程度的大小发现,卸载越多,碳纤维布的加固效果越好。The building base of our country is large, some building components may have reached the ultimate bearing capacity, and it is very important for the reinforcement of such components. As a new kind of material, carbon fiber cloth has a good effect on the reinforcement of concrete. In order to better study the mechannical properties of the reinforced concrete beams with the ultimate bearing capacity,the flexural behavior of concrete beam strengthened by CFRP with the ultimate bearing capacity is analyzed. The finite element model is established according to the actual situation,and through the element life and death to implement the CFRP reinforcement process. The results of ANSYS are compared with the experimental results, and the applicability and practicability of the finite element analysis are determined. on the basis of this model, after the concrete beam reached the limit state of bearing capacity, it is found that the greater the unloading degree, the better the reinforcement effect of carbon fiber cloth.

关 键 词：碳纤维布 承载力极限状态 混凝土梁 加固 ANSYS 

分 类 号：TU312[建筑科学—结构工程]