关于超长堆组基础在滑坡下积累斜率下的承载性能研究
Zhaolan Wei1, Chuanjiang Zhang1, Kai Hu1
1School of Civil Engineering, Sichuan Agricultural University, Chengdu, 611830, China.
Scientific reports
|February 12, 2025
概括
斜坡上的超长堆基础容易受到山体滑坡的影响. 后承受着最大的压力,但有针对性的增强可以显著提高稳定性和承载能力.
科学领域:
- 地质技术工程 地质技术工程
- 土木工程 土木工程是指土木工程.
- 地震工程的工程是地震工程.
背景情况:
- 斜坡积累中的基面临着由滑动负荷造成的复杂应力.
- 现有的研究不足以解决堆组在山体滑坡和超层结构负荷组合下的稳定性.
- 滑坡的影响对工程结构的整体崩构成重大风险.
研究的目的:
- 系统地研究在滑动负载下的斜坡积累中超长基的应力和变形.
- 分析堆组的承载行为,堆与土壤的相互作用,以及在不同的山体滑坡强度下的整体稳定性.
- 为了评估防滑堆增强策略的有效性.
主要方法:
- 使用有限元分析软件,在典型的斜坡积累中建立了堆基础的数值模型.
- 在不同的山体滑坡强度下进行模拟,以研究变形和土相互作用.
- 分析了超结构负荷和防滑堆增强的影响.
主要成果:
- 后最容易受到山体滑坡负荷的影响,在顶或滑动表面附近的内部力最大.
- 超结构负荷对基曲时刻和水平移位的影响有限,但会显著影响剪切力.
- 后部防滑堆增强非常有效,最佳距离是堆截面长度的2-4倍.
结论:
- 该研究为设计斜坡积累中的超长堆基础提供了理论基础.
- 研究结果为响应分析和对受滑动负荷影响的堆基础的优化设计提供了关键的见解.
- 确定了有效的增强策略,特别是后,以提高结构稳定性.
相关概念视频
Method of Superposition
642
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...
642
Impact Strength of Concrete
172
Impact strength in concrete is a critical measure that reflects the material's capability to endure the forces applied during pile driving and when supporting machinery foundations that experience impulsive loads. It is also essential when handling precast concrete components to prevent accidental damage. The impact strength is assessed by observing the concrete's resistance to repeated impacts and energy absorption capacity. A key indicator of significant damage to concrete is when it...
172
Design Example: Maintaining Level of an Embankment
48
Constructing a roadway embankment over uneven terrain requires precise leveling to ensure stability and proper drainage. Surveyors use a leveling instrument and staff to calculate ground elevations and determine the required fill material at each point along the embankment alignment.The process begins by positioning a leveling instrument near a benchmark with a known elevation. A backsight reading establishes the instrument height, which serves as a reference for subsequent measurements. A...
48
Slump Test
128
The slump test is a widely used method to measure the workability of concrete. It employs a 12-inch high truncated cone mold that tapers from eight inches at the base to four inches at the top. Before testing, the mold is securely attached to a flat base and dampened.
Concrete is poured into the mold in three layers to conduct the test. Each layer is compacted 25 times with a steel tamping rod, which has a five-eighths-inch diameter and a rounded end, to ensure even distribution and eliminate...
Concrete is poured into the mold in three layers to conduct the test. Each layer is compacted 25 times with a steel tamping rod, which has a five-eighths-inch diameter and a rounded end, to ensure even distribution and eliminate...
128
Beams with Unsymmetric Loadings
111
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...
111
Eccentric Loading
313
Eccentric loading is a crucial concept in the study of structural engineering and mechanics, particularly when analyzing the stability and stress distribution in columns. Unlike centric loading, where the force is applied along the centroidal axis, causing uniform compression, eccentric loading occurs when a force is applied off-center. This off-center application introduces not only direct compressive stress but also bending stress, significantly influencing the column's behavior under...
313


