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沙特阿拉伯东部盐土壤的异常动态反应和微区划,使用3D地震行为建模

Muhammad Fayyaz^1,2, Naser A Al-Shayea², Muhammad Abdul Waheed¹

¹Riyadh Geotechnique and Foundations (RGF), Dammam, Saudi Arabia.

Scientific reports

|December 11, 2025

概括

这项研究为sabkha土壤开发了新的地震响应参数,揭示了异常的动态行为和更高的剪切模量. 结果表明,根据3D建模修订地震代码,以准确评估液化危险.

科学领域:

地质技术工程地质技术工程
地震工程的工程是地震工程.
土壤动力学土壤动力学

背景情况:

萨布卡土壤的特点是软弱和高盐含量,表现出不寻常的地震反应,目前的参数无法捕捉到.
在沙特阿拉伯Ras Al-Khair工业城的sabkha土壤中观察到异常的地质物理和动态测试结果.

研究的目的:

为Sabkha土壤开发准确的地震响应参数.
了解这些土壤的异常动态行为.
改进sabkha环境中的地震危险评估.

主要方法:

基于地下层的微区划的大量现有数据的分析.
进行实地和实验室探索.
3D地震响应的数值模拟.

主要成果:

萨布卡土壤表现出异常的动态反应,剪切模量高于预期.
频谱加速度值在短时间和长时间之间不同于本地代码规范.
沿着对比层的边界确定了局部化的液化潜力.
特定地点的地震反应受土壤结构,组织和孔隙液体的影响.

结论:

3D建模和模拟为地震分析提供了更现实的地面状况表示.
当前的地震参数可能不能充分代表sabkha土壤的行为.
建议包括修改基于3D建模的地震参数,该建模包括孔隙流体特征.

关键词:

三维动态建模和模拟3D动态建模和模拟液化潜力可能存在.微区划是一个微区划.毛孔液体的影响萨布卡土壤是土壤的土壤.地震反应的响应

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