Study on the Influence of Reinforcement on Creep and Shrinkage Effects of Composite Beams

2019 3rd International Workshop on Renewable Energy and Development

能源学;生态环境科学

Zhang, Shengping^1 ; Chen, Xu^2 ; Li, Guoliang^1

Department of Construction Engineering, Kunming University of Science and Technology, Kunming, Yunnan

650504, China^1

Department of Urban and Rural Construction and Engineering Management, Kunming University, Kunming, Yunnan

650500, China^2

关键词: Axial forces;    Composite beam;    Creep and shrinkages;    Individual sections;    Internal force redistribution;    Rigorous solution;    System of differential equations;    Time-dependent behaviour;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/267/3/032068/pdf
DOI  :  10.1088/1755-1315/267/3/032068

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

To obtain time-dependent behaviours of composite beams, the system of differential equations is established by Rüsch constitutive equation of creep. Rigorous solutions of the system are obtained by computer programs of the authors. Creep and shrinkage effects involve internal force redistribution and deflection increase, and these are significantly large for composite beam. Parameter analyse of the reinforcement of concrete slab on these effects is conducted. Among them the reinforcement aggravates significantly the reduction of axial force between individual sections and alliviates slightly the increase of deflection of the beam.