关于不同螺栓连接配置的基岩纤维增强聚合物板的机械性能的实验研究
Zhigang Gao1,2, Dongzi Pan1, Qing Qin1,2
1School of Civil and Architecture Engineering, Xi'an University of Science and Technology, Xi'an 710000, China.
Polymers
|October 16, 2025
概括
研究了用于光伏系统的基岩纤维增强聚合物 (BFRP) 螺栓连接. 双面拉皮关节 (DJ) 由于其设计和螺栓配置,显示出优越的拉力承载能力.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 土木工程 土木工程是指土木工程.
背景情况:
- 基岩纤维增强聚合物 (BFRP) 复合材料为光伏安装系统提供了出色的机械性能和耐用性.
- 螺栓连接对于连接复合材料组件至关重要,因为它们的简单性和负载传输效率.
研究的目的:
- 在各种参数下调查螺栓式BFRP板连接的承载性能.
- 建立一个计算模型,用于螺栓式BFRP接头的拉力承载能力.
主要方法:
- 使用直角实验设计分析了螺栓端距离,螺栓数量,螺栓材料,螺栓直径,预载荷和连接长度等参数.
- 测试了三种螺栓式BFRP板的配置:双面膝关节 (DJ),单面膝关节 (DP) 和双面膝关节 (SP).
- 进行了对角敏感性分析,以确定关键影响因素.
主要成果:
- DJ连接的平均拉力负载能力最高,相应地超过SP和DP连接的45.3%和50.2%.
- 与DP和DJ连接相比,SP连接显示了最大的平均峰值位移,比DP和DJ连接增加了29.7%和52.9%.
- 螺栓数量和预装载量被确定为影响最终拉力承载能力的重要因素.
结论:
- DJ连接的卓越性能归因于其更长的有效剪切长度和更多的承载螺栓.
- SP连接的双面约束增强了预负载分布和剪切变形能力.
- 为拉力负载能力开发了一个计算模型,包括摩擦衰变和剪切强度,在剪切滑动主导的故障中,误差低于15%.
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