摘要
在合理选用材料本构模型和接触模型的基础上,建立内填钢纤维混凝土的钢管束剪力墙压弯构件的有限元模型,通过对比试验与有限元计算结果,验证考虑钢纤维随机分布有限元模型的准确性和可靠性。利用该模型分析钢纤维体积率、混凝土强度、轴压比等参数对其压弯承载能力的影响,得到上述参数对构件压弯承载能力的影响规律。结果表明:钢纤维的掺入在增强构件承载能力的同时,避免了单纯提高混凝土强度而使构件延性降低。
Based on the reasonable selection of material constitutive model and contact model, the finite element model of steel fiber reinforced concrete steel tube shear wall bending member was established. The accuracy and reliability of the finite element model considering random distribution of steel fiber were verified by comparison of test and finite element analysis results.The model is used to analyze the influence of steel fiber volume ratio, concrete strength, axial compression ratio and other parameters on the flexural bearing capacity of members, and the influence law of the above parameters on the flexural bearing capacity of members is obtained. The results show that the addition of steel fiber can not only enhance the bearing capacity of the member,but also avoid the situation that the ductility of the member is reduced by simply increasing the strength of concrete.
作者
张常涛
傅明亮
曾武华
ZHANG Chang-tao;FU Ming-liang;ZENG Wu-hua(Fujian No.1 construction group Group limited liability company,Sanming 365001,China;College of Transportation and Civil Engineering,Fujian Agriculture and Forestry University,Fuzhou 350002,China;College of Civil Engineering,Sanming University,Sanming 365004)
出处
《三明学院学报》
2021年第6期109-113,124,共6页
Journal of Sanming University
基金
福建省自然科学基金项目(2020J01389)
三明市科技局引导性项目(2019-G-6)。
关键词
钢管束
组合剪力墙
钢纤维混凝土
有限元
压弯性能
steel tubes
composite shear wall
fiber reinforced concrete
finite element model
eccentrically compressed members
作者简介
张常涛,男,福建长汀人,教授级高工,总工程师。主要研究方向:钢管束剪力墙组合结构。
