钢纤维混凝土栓钉-橡胶组合连接件疲劳性能分析
U24%U441.4%TU398; 为探究钢纤维混凝土(Steel fiber reinforced concrete,SFRC)栓钉-橡胶组合连接件的疲劳性能,结合文献疲劳试验,采用ABAQUS与FE-SAFE软件建立试件有限元模型并进行静力性能与疲劳寿命计算,结果与文献试验值基本吻合.以剪应力幅、橡胶套高度和栓钉直径等为控制参数,分析SFRC栓钉-橡胶组合连接件的疲劳寿命变化规律,并根据分析结果参考Eurocode 4 拟合出SFRC栓钉-橡胶组合连接件的疲劳寿命计算公式.研究结果表明:通过ABAQUS与FE-SAFE相结合的方式能够较好地实现SFRC栓钉-橡胶组合连接件的疲劳性能分析;组...
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| Published in | 铁道标准设计 Vol. 69; no. 1; pp. 104 - 146 |
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| Main Authors | , , , , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
太原科技大学车辆与交通工程学院,太原 030024%山西省交通科技研发有限公司,太原 030006%兰州大学土木工程与力学学院,兰州 730000
2025
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1004-2954 |
| DOI | 10.13238/j.issn.1004-2954.202305240001 |
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| Abstract | U24%U441.4%TU398; 为探究钢纤维混凝土(Steel fiber reinforced concrete,SFRC)栓钉-橡胶组合连接件的疲劳性能,结合文献疲劳试验,采用ABAQUS与FE-SAFE软件建立试件有限元模型并进行静力性能与疲劳寿命计算,结果与文献试验值基本吻合.以剪应力幅、橡胶套高度和栓钉直径等为控制参数,分析SFRC栓钉-橡胶组合连接件的疲劳寿命变化规律,并根据分析结果参考Eurocode 4 拟合出SFRC栓钉-橡胶组合连接件的疲劳寿命计算公式.研究结果表明:通过ABAQUS与FE-SAFE相结合的方式能够较好地实现SFRC栓钉-橡胶组合连接件的疲劳性能分析;组合连接件的疲劳破坏位置均发生于栓钉根部焊缝处;与普通栓钉连接件相比,加入橡胶套的组合连接件在 200 万次疲劳荷载作用下的应力幅下降 40%左右;组合连接件的疲劳寿命随着栓钉直径的增大逐渐增加,随着橡胶套高度的增加逐渐降低;提出的疲劳寿命计算公式在 200 万次疲劳荷载下的应力幅均明显低于各国现有规范,采用本文计算公式预测SFRC栓钉-橡胶组合连接件的疲劳寿命更加安全,为SFRC栓钉-橡胶组合连接件的设计应用提供了参考. |
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| AbstractList | U24%U441.4%TU398; 为探究钢纤维混凝土(Steel fiber reinforced concrete,SFRC)栓钉-橡胶组合连接件的疲劳性能,结合文献疲劳试验,采用ABAQUS与FE-SAFE软件建立试件有限元模型并进行静力性能与疲劳寿命计算,结果与文献试验值基本吻合.以剪应力幅、橡胶套高度和栓钉直径等为控制参数,分析SFRC栓钉-橡胶组合连接件的疲劳寿命变化规律,并根据分析结果参考Eurocode 4 拟合出SFRC栓钉-橡胶组合连接件的疲劳寿命计算公式.研究结果表明:通过ABAQUS与FE-SAFE相结合的方式能够较好地实现SFRC栓钉-橡胶组合连接件的疲劳性能分析;组合连接件的疲劳破坏位置均发生于栓钉根部焊缝处;与普通栓钉连接件相比,加入橡胶套的组合连接件在 200 万次疲劳荷载作用下的应力幅下降 40%左右;组合连接件的疲劳寿命随着栓钉直径的增大逐渐增加,随着橡胶套高度的增加逐渐降低;提出的疲劳寿命计算公式在 200 万次疲劳荷载下的应力幅均明显低于各国现有规范,采用本文计算公式预测SFRC栓钉-橡胶组合连接件的疲劳寿命更加安全,为SFRC栓钉-橡胶组合连接件的设计应用提供了参考. |
| Abstract_FL | In order to explore the fatigue performance of steel fiber reinforced concrete(SFRC)rubber-sleeved stud shear connector,the finite element model of the specimen is established with ABAQUS and FE-SAFE software,and its static performance and fatigue life are calculated based on the fatigue test specified in the literature.The results are basically consistent with the experimental values in the literature.Taking shear stress amplitude,rubber-sleeved height and stud diameter as control parameters,this paper analyzes the fatigue life variation law of SFRC rubber-sleeved connector.According to the analysis results,the fatigue life calculation formula of SFRC rubber-sleeved connector is fitted with reference to Eurocode 4.The results show that the combination of ABAQUS and FE-SAFE can better realize the fatigue performance analysis of SFRC rubber-sleeved connectors.The fatigue failure position of the composite connector occurs at the weld at the root of the stud.Compared with the ordinary stud connector,the stress amplitude of the composite connector with rubber-sleeved decreases by about 40%under 2 million fatigue loads.The fatigue life of the composite connector increases with the increase of the diameter of the stud,and decreases with the increase of the height of the rubber-sleeved.As the stress amplitude of the proposed fatigue life calculation formula under 2 million fatigue loads is significantly lower than that of the existing codes in various countries,it is safer to predict the fatigue life of SFRC rubber-sleeved composite connectors by using the calculation formula in this paper,which provides some reference for the design and application of SFRC stud-rubber composite connectors. |
| Author | 栗振锋 郭文龙 郭京京 刘俊俊 毛敏 刘世忠 张俊豪 |
| AuthorAffiliation | 太原科技大学车辆与交通工程学院,太原 030024%山西省交通科技研发有限公司,太原 030006%兰州大学土木工程与力学学院,兰州 730000 |
| AuthorAffiliation_xml | – name: 太原科技大学车辆与交通工程学院,太原 030024%山西省交通科技研发有限公司,太原 030006%兰州大学土木工程与力学学院,兰州 730000 |
| Author_FL | GUO Wenlong ZHANG Junhao GUO Jingjing LIU Shizhong MAO Min LI Zhenfeng LIU Junjun |
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| Author_xml | – sequence: 1 fullname: 张俊豪 – sequence: 2 fullname: 刘世忠 – sequence: 3 fullname: 栗振锋 – sequence: 4 fullname: 毛敏 – sequence: 5 fullname: 郭文龙 – sequence: 6 fullname: 郭京京 – sequence: 7 fullname: 刘俊俊 |
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| DocumentTitle_FL | Fatigue Performance Analysis of Steel Fiber Reinforced Concrete Rubber-sleeved Stud Shear Connector |
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| Keywords | rubber-sleeved stud shear connector steel fiber reinforced concrete 栓钉-橡胶组合连接件 应力幅 钢纤维混凝土 finite element stress amplitude FE-SAFE 有限元 fatigue life 疲劳寿命 |
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| Title | 钢纤维混凝土栓钉-橡胶组合连接件疲劳性能分析 |
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