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| 带肋钢筋与混凝土粘结性能的细观数值模拟 | |
| 引用本文： | 王海龙,李朝红,徐光兴.带肋钢筋与混凝土粘结性能的细观数值模拟[J].西南交通大学学报,2011,46(3):365-372. |
| 作者姓名： | 王海龙 李朝红 徐光兴 |
| 作者单位： | 1. 西南交通大学土木工程学院,四川,成都,610031;河北建筑工程学院土木工程系,河北,张家口,075024 2. 西南交通大学土木工程学院,四川,成都,610031;石家庄铁道大学土木工程学院,河北,石家庄,050043 3. 石家庄铁道大学土木工程学院,河北,石家庄,050043 |
| 基金项目： | 河北省科技攻关资助项目 |
| 摘 要： | 为研究带肋钢筋与混凝土之间的粘结破坏机理,揭示钢筋肋外形对粘结性能的影响,建立了钢筋混凝土的三维细观数值模型.该模型基于ANSYS参数化设计语言,在混凝土细观模型的基础上加入钢筋,通过界面单元细分和材料属性判别生成各细观相单元.分别建立了月牙肋钢筋和螺纹钢筋拉拔试件模型,模拟拉拔试验中粘结的破坏过程,分析了混凝土损伤破坏区域的分布和钢筋肋纹处的应力状态.结果表明,月牙肋钢筋与混凝土的粘结强度略低于螺纹钢筋,但破坏时其肋间混凝土的应力集中现象缓和,损伤程度较轻;数值模拟的粘结应力和钢筋滑移量与试验结果吻合,说明所建立的模型可用于模拟钢筋与混凝土的粘结性能. |
| 关 键 词： | 带肋钢筋 混凝土 粘结性能 损伤 细观数值模型 |
Mesoscopic Numerical Simulation of Bond Behavior of Ribbed Bars and Concrete |
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| WANG Hailong,LI Chaohong,XU Guangxing.Mesoscopic Numerical Simulation of Bond Behavior of Ribbed Bars and Concrete[J].Journal of Southwest Jiaotong University,2011,46(3):365-372. | |
| Authors: | WANG Hailong LI Chaohong XU Guangxing |
| Institution: | WANG Hailong1,2,LI Chaohong1,3,XU Guangxing3(1.School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,China,2.Department of Civil Engineering,Hebei Institute of Architecture and Civil Engineering,Zhangjiakou 075024,3.School of Civil Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China) |
| Abstract: | In order to research the failure mechanism of bond between ribbed bars and concrete and discuss the influence of rib outline on bond behavior at a meso-level,a 3-D mesoscopic numerical model for reinforced concrete was established with ANSYS parametric design language.This model is based on a mesoscopic model for concrete and considers bars,and elements of each mesoscopic phase are generated by refining interface elements and distinguishing material properties.Two numerical models for pullout specimens for ... |
| Keywords: | ribbed bar concrete bond behavior damage mesoscopic numerical model |
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