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配筋超高性能混凝土梁抗弯性能有限元分析
Finite Element Analysis of Flexural Performance of Reinforced Ultra-high Performance Concrete Beams
2022年第6期
超高性能混凝土；有限元分析；梁；抗弯性能；配筋率
Ultra-high performance concrete(UHPC); Finite element analysis; Beam; Flexural performance; Reinforcement ratio
2022年第6期
10.19761/j.1000-4637.2022.06.058.04
宋 斌，刘 芳
武汉理工大学 交通与物流工程学院，湖北 武汉 430070

宋 斌，刘 芳

宋斌,刘芳.配筋超高性能混凝土梁抗弯性能有限元分析[J].混凝土与水泥制品,2022(6):58-61.

SONG B,LIU F.Finite Element Analysis of Flexural Performance of Reinforced Ultra-high Performance Concrete Beams[J].China Concrete and Cement Products,2022(6):58-61.

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基于ABAQUS有限元软件，采用混凝土塑性损伤（CDP）模型模拟了超高性能混凝土（UHPC）的本构关系，使用三维实体单元和桁架单元模拟了UHPC和纵筋之间的接触关系，研究了配筋率、截面有效高度与截面高度比值和UHPC抗拉强度对UHPC梁抗弯性能的影响。结果表明：随着配筋率的提高和截面有效高度与截面高度比值的增大，UHPC梁的屈服荷载、峰值荷载以及对应的挠度均明显提高；随着UHPC抗拉强度的增大，UHPC梁的峰值荷载和屈服荷载增大，但峰值荷载和屈服荷载对应的挠度减小。 Based on ABAQUS finite element software, the constitutive relationship of ultra-high performance concrete (UHPC) was simulated by concrete damage plasticity(CDP) model, and the contact relationship between UHPC and longitudinal reinforcement were simulated by three-dimensional solid element and truss element. The effects of reinforcement ratio, the ratio of effective section height to section height and UHPC tensile strength on the flexural performance of UHPC beam were studied. The results show that the yield load, peak load and corresponding deflection of UHPC beam increase significantly with the increase of reinforcement ratio and the ratio of effective section height to section height. With the increase of UHPC tensile strength, the peak load and yield load of UHPC beam increase, but the deflections corresponding to peak load and yield load decrease.
英文名 : Finite Element Analysis of Flexural Performance of Reinforced Ultra-high Performance Concrete Beams
刊期 : 2022年第6期
关键词 : 超高性能混凝土；有限元分析；梁；抗弯性能；配筋率
Key words : Ultra-high performance concrete(UHPC); Finite element analysis; Beam; Flexural performance; Reinforcement ratio
刊期 : 2022年第6期
DOI : 10.19761/j.1000-4637.2022.06.058.04
文章编号 :
基金项目 :
作者 : 宋 斌，刘 芳
单位 : 武汉理工大学 交通与物流工程学院，湖北 武汉 430070

宋 斌，刘 芳

宋斌,刘芳.配筋超高性能混凝土梁抗弯性能有限元分析[J].混凝土与水泥制品,2022(6):58-61.

SONG B,LIU F.Finite Element Analysis of Flexural Performance of Reinforced Ultra-high Performance Concrete Beams[J].China Concrete and Cement Products,2022(6):58-61.

摘要
参数
结论
参考文献
引用本文

基于ABAQUS有限元软件，采用混凝土塑性损伤（CDP）模型模拟了超高性能混凝土（UHPC）的本构关系，使用三维实体单元和桁架单元模拟了UHPC和纵筋之间的接触关系，研究了配筋率、截面有效高度与截面高度比值和UHPC抗拉强度对UHPC梁抗弯性能的影响。结果表明：随着配筋率的提高和截面有效高度与截面高度比值的增大，UHPC梁的屈服荷载、峰值荷载以及对应的挠度均明显提高；随着UHPC抗拉强度的增大，UHPC梁的峰值荷载和屈服荷载增大，但峰值荷载和屈服荷载对应的挠度减小。

Based on ABAQUS finite element software, the constitutive relationship of ultra-high performance concrete (UHPC) was simulated by concrete damage plasticity(CDP) model, and the contact relationship between UHPC and longitudinal reinforcement were simulated by three-dimensional solid element and truss element. The effects of reinforcement ratio, the ratio of effective section height to section height and UHPC tensile strength on the flexural performance of UHPC beam were studied. The results show that the yield load, peak load and corresponding deflection of UHPC beam increase significantly with the increase of reinforcement ratio and the ratio of effective section height to section height. With the increase of UHPC tensile strength, the peak load and yield load of UHPC beam increase, but the deflections corresponding to peak load and yield load decrease.

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（1）配筋UHPC梁具有良好的力学性能，其受弯过程可以分为4个阶段：弹性阶段、裂缝发展阶段、屈服强化阶段和破坏阶段。配筋UHPC梁的破坏过程与普通钢筋混凝土梁相似。
（2）本文建立的UHPC梁有限元模型具有较高的精度，能够有效预测UHPC梁的抗弯承载力、初始刚度和峰值挠度。
（3）有限元模拟结果表明，UHPC梁的屈服、峰值荷载及对应挠度随着配筋率、截面有效高度与截面高度比值的增大而增大。UHPC梁的屈服、峰值荷载随着UHPC抗拉强度的增大而增大，但屈服、峰值荷载对应的挠度则随着UHPC抗拉强度的增大而减小。

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[4] 高玉军,邵建冬,孙武,等.UHPC预制桥面板的研发与应用[J].混凝土与水泥制品,2021(10):42-47.
[5] 高育欣,朱文凯,罗遥凌,等.配筋超高性能混凝土(UHPC)梁弯曲试验研究[J].混凝土与水泥制品,2021(7):67-70.
[6] SHAFIEIFAR M,FARZAD M,AZIZINAMINI A.A Comparison of Existing Analytical Methods to Predict the Flexural Capacity of Ultra High Performance Concrete(UHPC) Beams[J].Construction and Building Materials,2018,172:10-18.
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[8] KMIECIK P,KAMNISKI M.Modelling of Reinforced Concrete Structures and Composite Structures with Concrete Strength Degradation Taken into Consideration[J].Archives of Civil and Mechanical Engineering,2011,11(3):623-636.
[9] KUPFER HB,HILSDORF K H,RUSH H.Behaviour of Concrete Under Biaxial Stresses[J].Aci Structural Journal,1973, 66(8):656-666.
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[11] 刘超,黄钰豪,马汝杰,等.高应变强化超高性能混凝土T形梁抗弯承载力[J].同济大学学报(自然科学版),2018,46(6):744－750.

宋斌,刘芳.配筋超高性能混凝土梁抗弯性能有限元分析[J].混凝土与水泥制品,2022(6):58-61.

SONG B,LIU F.Finite Element Analysis of Flexural Performance of Reinforced Ultra-high Performance Concrete Beams[J].China Concrete and Cement Products,2022(6):58-61.

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