具有不同短长度比的可更换钢链的地震性能
Liquan Xiong1,2, Zhengchao Guo3, Jun Cai4
1Department of Civil Engineering, Chongqing Three Gorges University, Wanzhou, Chongqing, 404100, China. xiongliquan2013@126.com.
Scientific reports
|December 2, 2024
概括
这项研究引入了可更换的钢链在复合材料框架中,以快速恢复地震. 这些环节作为保险丝,集中损坏,并允许轻松更换,以确保结构的再利用.
科学领域:
- 结构工程 结构工程
- 地震工程的工程是地震工程.
- 材料科学 材料科学 材料科学
背景情况:
- 传统的框架结构在地震事件中经常遭受重大破坏,阻碍了快速恢复和重复使用.
- 具有可更换钢链的新型复合框架通过将损坏集中在可更换元件中提供解决方案.
研究的目的:
- 研究可更换钢链的复合框架的抗震性能.
- 评估钢链作为结构性保险丝的有效性,以减少损坏和快速恢复.
主要方法:
- 在低循环逆转负载下设计并测试了四个样本,具有不同的短链比率.
- 分析了故障特征,歇斯底里反应和剪切强度.
- 使用 Abaqus 软件开发并验证非线性有限元模型 (FEM).
主要成果:
- 所有样本都表现出稳定的歇斯底里反应,在钢链中具有显著的不弹性变形能力.
- 钢链有效地作为结构保险丝起作用,开发出完全的剪切强度.
- 识别的故障模式包括剪切和曲剪切故障,具有特定的接和曲损伤模式.
结论:
- 复合材料框架中的可更换钢环节通过局部化损坏来提高抗震能力.
- 该研究验证了使用这些链接在地震事件后快速进行结构恢复和重用.
- FEM准确地预测了实验结果,帮助未来的设计实践.
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