关于分组螺栓连接器的剪切阻力性能研究
Wenru Lu1,2,3, Yuanming Huang1, Wenhan Xu4
1School of Civil Engineering, Henan University of Technology, Zhengzhou 450001, China.
Materials (Basel, Switzerland)
|October 28, 2023
概括
聚合螺栓效应显著影响了螺栓连接器的力特性. 有限元分析验证了剪切能力的公式,显示了行数和间距影响性能等关键因素.
科学领域:
- 结构工程 结构工程
- 复合材料 复合材料 复合材料
- 有限元分析 有限元分析
背景情况:
- 研究分组形效应对于理解复合结构中的形连接器行为至关重要.
- 现有的切削能力公式需要根据详细分析和实验数据进行验证.
研究的目的:
- 通过有限元模拟来分析对连接器强力性能的分组杆效应.
- 为了验证一个推的公式来计算分组螺栓连接器的剪切能力.
- 为了确定影响分组 stud 效应的敏感性因素.
主要方法:
- 为分组螺杆连接器开发有限元模型.
- 对分组的马效应和灵敏度因子进行分析.
- 模拟结果与62个现有的推出测试组进行比较.
主要成果:
- 螺杆排数和间距显著影响了聚合螺杆效应和力不均度.
- 混凝土等级>C50和高度对直径比>4的连接器对混凝土的强度和螺杆长度不敏感.
- 强力传导方向随着加载角度的变化而变化,减少了强力不均.
- 经过验证的公式显示了高准确度,平均测试与计算的比率为1.12.
结论:
- 杆行数和间距是分组杆连接器的关键参数.
- 经过验证的公式提供了一种可靠的方法来计算钢混凝土复合桥梁的剪切能力.
- 这些发现为未来研究连接器剪切性能提供了理论基础.
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