对于海水-海底结构的地震反应的土壤结构相互作用非线性分区分析方法的应用研究
Hao Lv1,2
1College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, China. lvhao_happy@sina.com.
Scientific reports
|November 13, 2024
概括
海洋结构需要地震安全分析,因流体结构和土壤结构相互作用而复杂化. 这项研究开发了和海底的计算框架,揭示了非线性海底特性可以放大桥梁中的地震反应.
科学领域:
- 地质技术工程 地质技术工程
- 海洋工程 海洋工程
- 地震学 地震学
背景情况:
- 海洋结构的地震安全分析至关重要.
- 流体结构和土壤结构相互作用使地震响应分析复杂化.
- 了解海底的非线性特性对于准确的地震评估至关重要.
研究的目的:
- 引入一个统一的计算框架,用于波动在和的海底-bedrock系统.
- 分析海洋桥梁的地震反应,考虑海水与海底结构的相互作用.
- 研究非线性海底特性对地震放大的影响.
主要方法:
- 在水和的海底基岩系统中开发了波浪运动的计算框架.
- 采用戴维登科夫模型和对非线性海底性质的修改后的Massing规则.
- 在海洋场所进行了线性和非线性自由场输入的比较分析.
主要成果:
- 非线性和海底表现出降低的模量和降低波阻比与基石.
- 从基岩到和的海底的反射和传输系数增加,放大了地震反应.
- 对于位于较硬的地点的深水桥梁,支柱反应对水深不敏感,而底部剪切减少.
结论:
- 拟议的框架准确地模拟了和海底条件下的地震反应.
- 非线性海底特征显著影响地震波的传播和放大.
- 这些发现为海洋工程结构,特别是桥梁的抗震设计提供了关键的见解.
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