在连续复合梁中使用袖子连接器的剪切性能研究
Fei Wu1, Hang Su2, Qingtian Su1,3
1Department of Bridge Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China.
Materials (Basel, Switzerland)
|July 13, 2024
概括
袖式螺栓连接器显示了比传统接螺栓更好的剪切性能. 这些新型连接器提供更高的承载能力和刚性,降低滑动,增强结构完整性.
科学领域:
- 土木工程 土木工程是指土木工程.
- 结构工程 结构工程
- 材料科学 材料科学 材料科学
背景情况:
- 袖钉连接器代表了复合结构中机械连接的新方法.
- 了解它们的剪切机制对于优化结构设计和性能至关重要.
- 与传统接杆进行比较对于量化改进至关重要.
研究的目的:
- 为了研究袖连接器的剪切机制和机械性能.
- 为了比较袖钉与传统接钉的剪切行为.
- 分析各种参数对袖连接器性能的影响.
主要方法:
- 在15个推出样本上进行静态负荷测试.
- 开发和验证一个Abaqus非线性有限元素模型.
- 对螺杆高度,袖子填充材料和袖子直径进行参数分析.
主要成果:
- 与接螺栓相比,袖形螺栓连接器具有更高的最终剪切承载能力 (4-8%的增加) 和剪切刚度 (25-35%的增加).
- 在袖式螺栓连接器中观察到减少滑动.
- 马杆的高度对表现有很小的影响,而袖子和马杆直径对表现有很大影响.
结论:
- 在剪切能力和刚性方面,袖子螺栓连接器的性能优于传统接螺栓.
- 在底附近使用超高性能混凝土 (UHPC) 提高了剪切能力.
- 袖子直径是优化袖子螺栓连接器性能的一个关键因素.
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