加强斜坡的地震可靠性分析,考虑到土壤参数依赖结构的依赖性结构
Xiaoyan Qie1, Xingxing Li2, Xianghua Tao3
1School of Water Conservancy and Transportation, Zhengzhou University, Zhengzhou, 450001, China.
Scientific reports
|March 15, 2025
概括
带有折叠地质网的增强斜坡显示了改善的地震性能. 弗兰克·科普拉和通用概率密度演变方法 (GPDEM) 增强了地震可靠性分析,以实现更安全的斜坡设计.
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.
- 结构可靠性 结构可靠性
背景情况:
- 斜坡的稳定性对于基础设施安全和减少经济损失至关重要.
- 准确的地震可靠性分析需要考虑土壤参数的依赖结构.
- 现有的方法可能无法完全捕捉地震负载下的强化斜坡中的复杂相互作用.
研究的目的:
- 评估加强斜坡的抗震性能和可靠性.
- 引入Copula函数来建模土壤凝聚力与内部摩擦角度之间的依赖.
- 应用通用概率密度演变方法 (GPDEM) 进行定量可靠性评估.
主要方法:
- 利用Copula函数 (特别是Frank Copula) 来建模土壤参数的依赖性.
- 使用一般化F差异方法生成土壤和地面运动样本.
- 模拟动态斜率响应,并使用GPDEM进行可靠性分析.
主要成果:
- 折叠地质网增强的斜坡表现出优越的地震性能.
- 弗兰克·科普拉有效地描述了土壤参数之间的依赖结构.
- 在各种值下,GPDEM能够快速生成结构可靠性曲线.
结论:
- 该研究为加强斜坡的地震可靠性分析提供了一个强大的框架.
- 研究结果支持使用折叠地质网来提高地震稳定性.
- 该方法为斜坡设计和风险评估提供了重要的理论影响.
更多相关视频
06:55Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling
Published on: August 5, 2016
8.1K
09:00Visualization of Failure and the Associated Grain-Scale Mechanical Behavior of Granular Soils under Shear using Synchrotron X-Ray Micro-Tomography
Published on: September 29, 2019
13.2K
相关概念视频
Design Consideration
172
Designing a structure involves a series of considerations, primarily the material's ultimate strength, calculated through tests that measure changes under increased force until the material reaches its breaking point or limit. The ultimate load, where the material breaks, is divided by its original cross-sectional area, resulting in the ultimate normal stress or strength. The ultimate shearing stress is another significant factor taken into account.
The factor of safety is another key...
The factor of safety is another key...
172
Beams with Unsymmetric Loadings
108
Analyzing a supported beam under unsymmetrical loadings is essential in structural engineering to understand how beams respond to varied force distributions. This analysis involves calculating the deflection and identifying points where the slope of the beam is zero, which are crucial for ensuring structural stability and functionality.
The first moment-area theorem determines the slope at any point on the beam. This theorem indicates that the change in slope between two points on a beam...
The first moment-area theorem determines the slope at any point on the beam. This theorem indicates that the change in slope between two points on a beam...
108
Method of Superposition
613
The method of superposition is a crucial technique in structural engineering, used to analyze the effect of multiple loads on beams. This approach involves calculating the deflection and slope for each load on a beam separately, and then summing these effects to determine the overall impact. It is applicable only when the beam material remains within its elastic limit, ensuring that deformations are linearly elastic.
When applying the method of superposition, each type of load—whether...
When applying the method of superposition, each type of load—whether...
613
Relation Between the Distributed Load and Shear
583
Understanding the relationship between the distributed load and shear force in structural analysis is crucial for analyzing beams subjected to various loading conditions. Consider the case of a beam experiencing a distributed load, two concentrated loads, and a couple moment.
583
Elasticity in Concrete
80
Upon subjecting concrete to moderate or high uniaxial compressive or tensile stresses, the strain response is non-linear relative to the stress applied. As the stress is removed, the resulting stress-strain curve deviates from the original path traced during loading, creating a hysteresis loop, indicative of the concrete's non-linear and non-elastic properties. Typically, a material's modulus of elasticity, which is a measure of the material's stiffness, is inferred from the linear...
80
Indeterminate Structure
487
Indeterminate structures refer to structures where internal forces and reactions cannot be determined using only the equations of static equilibrium. Indeterminate structures have more unknown forces and reaction forces than equations of static equilibrium that can be used to determine them. Indeterminate structures are often used in engineering to create complex, efficient, and aesthetically pleasing structures. There are various types of indeterminate structures used in engineering and...
487
