摘要
文中基于多物理场、多尺度耦合分析平台DUCOM-COM3,研究了湿度、温度、顶部纵筋配筋率、混凝土水灰比四种因素对钢混梁徐变挠度发展的影响。结果表明标准环境下模拟结果与试验结果吻合,且模拟结果展现出的各种因素对钢混梁徐变的影响符合徐变机理解释。进而,基于大量工况模拟结果,回归建立了多因素钢混梁徐变预测模型,并通过耦合工况下的分析结果验证了模型的合理性。
Based on the multi-phase and multi-scale DUCOM-COM3 numerical simulation platform,this study investigates the effects of humidity,temperature,compressive longitudinal rebar reinforcement ratio,and water-cement ratio on the creep behavior of RC beam.The results show that simulation results under standard environment are consistent with the experimental results,and sensitivity analysis of influencing factors on creep behavior conform to the creep mechanism.Afterwards,based on numerous simulations results under different condition,a multi-factor RC beam creep prediction model is established by regression,and accuracy of this formula is verified by simulation results under coupled conditions.
作者
黄文腾
弓扶元
HUANG Wenteng;GONG Fuyuan(Institute of Structural Engineering,Zhejiang University,Hangzhou 310058,China)
出处
《低温建筑技术》
2021年第5期86-90,共5页
Low Temperature Architecture Technology
