摘要
对服役20年的2片8 m跨度钢筋混凝土空心板梁进行了两点对称加载破坏试验。采用ABAQUS软件,基于混凝土损伤塑性模型且考虑了混凝土膨胀角、黏性参数,建立了试验梁非线性有限元模型。模型计算的梁体挠度、混凝土和钢筋应变与试验结果吻合良好。对试验梁破坏过程的分析表明:利用ABAQUS混凝土损伤塑性模型能很好地模拟试验梁受力破坏情况;通过模型拉伸损伤计算能很好地对梁的裂缝产生位置及发展趋势进行预测;试验梁正常使用极限承载能力明显下降而抗弯极限承载能力略有升高。
The two points symmetrical loading failure tests of two8m reinforced concrete hollow slab beams in service for20years were carried.The nonlinear finite element models of the test beams were established based on the concrete damage plasticity model and the dilation angle and viscosity parameter of concrete by using ABAQUS software T he beam deflection,the strain of concrete and steel bar calculated by the model were in good agreement with the experimental results.The failure process analysis of the test beams shows that the test beams can be simulated well by using ABAQUS concrete damage plasticity model.The crack location and development trend of beam can be well predicted and tracked by model tensile damage calculation.The serviceability ultimate bearing capacity of the test beam decreased slightly,while the ultimate bending capacity increased slightly.
作者
曾鹏
贾艳敏
王佳伟
ZENG Peng;JIA Yanmin;WANG Jiawei(College of Civil Engineering, Northeast Forestry University,Harbin Heilongjiang 150040, China;Liaoning Datong Road Construction Co., Ltd., Shenyang Liaoning 110005 , China)
出处
《铁道建筑》
北大核心
2017年第9期39-42,共4页
Railway Engineering
基金
辽宁省交通重点科技项目(201512
201513)
关键词
公路桥梁
抗弯承载力
试验研究
有限元分析
钢筋混凝土空心板梁
裂缝
Highway bridge
Bending bearing capacity
Experimental study
Finite element analysis
Reinforced concrete hollow slab beam
Crack
