Numerical Simulation of Lap-Spliced Ultra-High-Performance Concrete Beam Based on Bond-Slip

被引：2
|
作者：
Xu, Zhenming [1 ]
Huang, Yuan [1 ,2 ]
Liang, Rui [1 ]
机构：
[1] Hunan Univ, Coll Civil Engn, Changsha 410082, Hunan, Peoples R China
[2] Hunan Univ, Coll Civil Engn, Hunan Prov Key Lab Damage Diag Engn Struct, Changsha 410082, Hunan, Peoples R China
来源：
BUILDINGS | 2022年 / 12卷 / 08期
基金：
中国国家自然科学基金;
关键词：
UHPC; lap-spliced beam; bond-slip; CDP model; numerical simulation; parameter analysis; PLASTIC-DAMAGE MODEL; REINFORCING BARS; FLEXURAL BEHAVIOR; STEEL BAR; STRENGTH; UHPFRC; UHPC;
D O I：
10.3390/buildings12081257
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
In this paper, 3D finite element simulations were conducted for lap-spliced ultra-high-performance concrete (UHPC) beams using ABAQUS software. Based on the concrete damaged plasticity (CDP) model, the plastic damage factor was introduced to simulate the material properties of UHPC. The nonlinear characteristics of the steel bar and UHPC were considered, and the bond-slip constitutive relationship was selected to evaluate the bond-slip between the lap-spliced steel bar and UHPC. The simulated load-deflection curve, peak load, bond strength, and failure mode were in good agreement with the experimental results. The verified finite element model was used to analyze the parameters of the lap-spliced UHPC beam. The effects of lap-spliced steel bar diameter, stirrup spacing of non-lap segment, and shear span ratio on the mechanical properties and bond properties of the lap-spliced UHPC beam were studied. This study can provide a reference for the future simulation and design of lap-spliced UHPC beams.
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收藏
页数：20
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