特拉斯钢桥摩擦型螺栓连接中的界面摩擦研究

IF 0.6 4区工程技术 Q4 ENGINEERING, CIVIL

Baltic Journal of Road and Bridge Engineering Pub Date : 2020-03-17 DOI:10.7250/bjrbe.2020-15.467

Gaoxin Wang, You-liang Ding

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引用次数: 3

摘要

摩擦型螺栓连接通过界面摩擦传递结构构件内部的内力，但明显的季节性温度和螺栓断裂导致界面摩擦的重新分布，威胁连接的安全。因此，本研究考虑季节性温度和螺栓断裂的影响，对界面摩擦进行了有限元分析。通过有限元分析，模拟了季节性温度下的界面摩擦，揭示了温度引起的界面摩擦在不同区域和位置的分布。对断裂螺栓的进一步模拟揭示了断裂螺栓的数量和位置对界面摩擦重新分布的影响。最后，使用极限状态方程对螺栓连接中的界面摩擦进行了评估。结果表明：1）断裂螺栓的数量和位置使界面摩擦力在螺栓断裂区明显再分配；2）断裂螺栓的数量和位置对整个拼接板的总界面摩擦影响较小；3）螺栓断裂区减小的界面摩擦力转移到未断裂区，总界面摩擦力变化不大；4）通过对其极限状态方程的分析，所有拼接板都具有丰富的安全裕度。

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The Interface Friction in The Friction-Type Bolted Joint of Steel Truss Bridge: Case Study

The friction-type bolted joint transfers the internal forces in the structural members by interface friction, but noticeable seasonal temperature and bolt fracture cause the redistribution of interface friction and threaten the joint safety. Therefore, this study carried out finite element analysis on the interface friction considering the influence of seasonal temperature and bolt fracture. Through finite element analysis, the simulation of interface friction under seasonal temperature revealed the distribution of temperature induced interface friction in different areas and locations. Further simulation of fractured bolts revealed the influence of quantity and location of fractured bolts on the redistribution of interface friction. Finally, the interface frictions in the bolted joint were evaluated using limit state equations. The results showed that: 1) the quantity and location of fractured bolts cause obvious redistribution of interface friction in the bolt-fractured areas; 2) the quantity and location of fractured bolts have slight effect on the total interface friction in the whole splice plate; 3) the reduced interface friction in the bolt-fractured areas was transferred to the areas without bolt fracture, producing little change in the total interface friction; 4) all the splice plates had abundant safety margin after analysis of their limit state equations.

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来源期刊

Baltic Journal of Road and Bridge Engineering 工程技术-工程：土木

CiteScore

2.10

自引率

9.10%

发文量

审稿时长

>12 weeks

期刊介绍： THE JOURNAL IS DESIGNED FOR PUBLISHING PAPERS CONCERNING THE FOLLOWING AREAS OF RESEARCH: road and bridge research and design, road construction materials and technologies, bridge construction materials and technologies, road and bridge repair, road and bridge maintenance, traffic safety, road and bridge information technologies, environmental issues, road climatology, low-volume roads, normative documentation, quality management and assurance, road infrastructure and its assessment, asset management, road and bridge construction financing, specialist pre-service and in-service training;