basic friction angle

简明释义

基本摩擦角;

英英释义

例句

1.A higher basic friction angle 基本摩擦角 indicates a more stable material under load.

较高的基本摩擦角表示材料在负载下更为稳定。

2.In soil mechanics, the basic friction angle 基本摩擦角 is crucial for predicting failure surfaces.

在土壤力学中，基本摩擦角对于预测破坏面至关重要。

3.Designing a retaining wall requires knowledge of the basic friction angle 基本摩擦角 of the backfill material.

设计挡土墙需要了解回填材料的基本摩擦角。

4.The geotechnical engineer calculated the basic friction angle 基本摩擦角 to determine the stability of the slope.

土木工程师计算了基本摩擦角以确定坡度的稳定性。

5.The laboratory tests revealed the basic friction angle 基本摩擦角 of the clay sample.

实验室测试揭示了粘土样本的基本摩擦角。

作文

The concept of the basic friction angle is fundamental in the field of geotechnical engineering and soil mechanics. It refers to the angle of internal friction that a soil exhibits when it is subjected to shear stress. Understanding this angle is crucial for engineers as it helps them predict how soil will behave under various loading conditions, which is essential for designing stable structures such as foundations, retaining walls, and embankments. The basic friction angle is typically determined through laboratory tests, such as the direct shear test or triaxial test. These tests allow engineers to measure the shear strength of soil samples and derive the basic friction angle from the results. The angle is influenced by several factors, including soil type, moisture content, and density. For instance, granular soils like sand generally have higher basic friction angles compared to cohesive soils like clay due to their particle arrangement and interlocking properties.In practical applications, the basic friction angle plays a vital role in slope stability analysis. Engineers use this angle to assess whether a slope is stable or if it is at risk of failure. By calculating the driving forces acting on a slope and comparing them to the resisting forces derived from the basic friction angle, engineers can determine the factor of safety for the slope. A factor of safety greater than one indicates that the slope is stable, while a value less than one suggests potential failure.Moreover, the basic friction angle is also important in understanding the behavior of soil during earthquakes. During seismic events, the ground motion can induce shear stresses in the soil, and the basic friction angle helps predict how the soil will respond. This information is crucial for designing earthquake-resistant structures, as it allows engineers to estimate how much lateral movement a building might experience during a quake.It is also worth noting that the basic friction angle is not a constant value; it can change with varying environmental conditions. For example, when soil becomes saturated with water, its basic friction angle may decrease due to the reduced effective stress acting on the soil particles. This phenomenon is particularly significant in areas prone to heavy rainfall or flooding, where the stability of slopes and earth structures can be compromised.In summary, the basic friction angle is a critical parameter in geotechnical engineering that influences the design and analysis of various structures. Its determination through laboratory testing provides valuable insights into soil behavior under shear stress, which is essential for ensuring the safety and stability of civil engineering projects. As engineers continue to develop more advanced techniques for measuring and analyzing the basic friction angle, our understanding of soil mechanics will only improve, leading to safer and more resilient infrastructure in the face of natural hazards.

基本摩擦角是岩土工程和土壤力学领域的一个基本概念。它指的是土壤在受到剪切应力时所表现出的内摩擦角。理解这个角度对工程师至关重要，因为它帮助他们预测土壤在各种荷载条件下的行为，这对设计稳定的结构（如基础、挡土墙和堤坝）至关重要。基本摩擦角通常通过实验室测试来确定，例如直接剪切试验或三轴试验。这些测试使工程师能够测量土壤样本的剪切强度，并从结果中推导出基本摩擦角。该角度受多个因素的影响，包括土壤类型、含水量和密度。例如，颗粒土壤如沙子通常具有较高的基本摩擦角，而粘性土壤如粘土则相对较低，这是由于它们的颗粒排列和相互锁定特性。在实际应用中，基本摩擦角在边坡稳定性分析中起着至关重要的作用。工程师利用这个角度来评估边坡是否稳定，或者是否有失稳的风险。通过计算作用于边坡的驱动力并将其与基于基本摩擦角得出的抗力进行比较，工程师可以确定边坡的安全系数。安全系数大于一表示边坡稳定，而小于一则表明可能会发生失稳。此外，基本摩擦角在了解土壤在地震期间的行为方面也很重要。在地震事件中，地面运动可能会在土壤中引发剪切应力，基本摩擦角有助于预测土壤的反应。这些信息对于设计抗震结构至关重要，因为它使工程师能够估计建筑在地震期间可能经历的侧向移动。还值得注意的是，基本摩擦角并不是一个恒定值；它可能随环境条件的变化而变化。例如，当土壤被水饱和时，基本摩擦角可能会因作用在土壤颗粒上的有效应力降低而下降。这种现象在降雨量大或洪水频发的地区尤为显著，此时边坡和土体结构的稳定性可能会受到影响。总之，基本摩擦角是岩土工程中的一个关键参数，它影响着各种结构的设计和分析。通过实验室测试确定的基本摩擦角提供了关于土壤在剪切应力下行为的宝贵见解，这对确保土木工程项目的安全和稳定至关重要。随着工程师不断开发更先进的测量和分析基本摩擦角的技术，我们对土壤力学的理解只会不断提高，从而在自然灾害面前实现更安全、更具韧性的基础设施。