positive bending moment

简明释义

正弯矩

英英释义

例句

1.In reinforced concrete design, the positive bending moment (正弯矩) is critical for determining the amount of steel reinforcement required.

在钢筋混凝土设计中，正弯矩 (正弯矩)对于确定所需的钢筋量是至关重要的。

2.The design of the bridge must account for the positive bending moment (正弯矩) that occurs at mid-span under live load conditions.

桥梁的设计必须考虑在活荷载条件下发生的正弯矩 (正弯矩)。

3.Engineers calculate the positive bending moment (正弯矩) to ensure that beams can withstand the forces acting on them.

工程师计算正弯矩 (正弯矩)以确保梁能够承受作用于其上的力。

4.The positive bending moment (正弯矩) in the cantilever beam occurs when the load is applied at the free end.

当荷载施加在悬臂梁的自由端时，正弯矩 (正弯矩)会发生。

5.In a simply supported beam, the section near the center experiences a positive bending moment (正弯矩) due to the applied loads.

在一个简单支撑的梁中，靠近中心的截面由于施加的荷载经历了一个正弯矩 (正弯矩)。

作文

In the field of structural engineering, understanding the concepts of bending moments is crucial for designing safe and efficient structures. One important aspect of this is the concept of a positive bending moment. A positive bending moment occurs when the moment tends to cause the structure to bend in a direction that creates tension on the bottom side of a beam and compression on the top side. This is typically seen in simply supported beams under load, where the load applied causes the beam to deflect downwards, resulting in a positive bending moment at the center of the span. The significance of recognizing a positive bending moment lies in its implications for material selection and structural integrity. Engineers must ensure that the materials used can withstand the stresses induced by this moment without failing. For instance, if a beam experiences a high positive bending moment, the material must have sufficient tensile strength to resist the forces acting upon it. Additionally, the design must account for factors such as the length of the beam, the type of loading, and the support conditions. When analyzing structures, engineers often use diagrams to visualize the bending moments along the length of a beam. These moment diagrams illustrate where the positive bending moment occurs and how it varies with different loads. Understanding these diagrams helps engineers make informed decisions about where to place reinforcements or additional supports to ensure the structure's safety and functionality. Moreover, the concept of a positive bending moment is not limited to beams alone. It also applies to various structural elements, including slabs, frames, and bridges. Each of these components may experience positive bending moments depending on their design and the loads they encounter. For example, in bridge design, the positive bending moment is critical in determining the load-carrying capacity of the structure, especially in areas where vehicles exert significant downward forces. Furthermore, the understanding of a positive bending moment is essential when it comes to ensuring the longevity of a structure. If a structure is subjected to repeated positive bending moments that exceed the material's limits, it can lead to fatigue and eventual failure. Therefore, engineers must consider factors such as load duration and frequency when assessing the impacts of bending moments on structural performance. In conclusion, the concept of a positive bending moment is fundamental in the realm of structural engineering. Its implications stretch beyond mere calculations; they influence the overall design, safety, and durability of structures. By thoroughly understanding how positive bending moments affect different components, engineers can create structures that not only meet safety standards but also stand the test of time. As the field of engineering continues to evolve, the importance of mastering concepts like the positive bending moment will remain paramount for future innovations in construction and design.

在结构工程领域，理解弯矩的概念对于设计安全和高效的结构至关重要。其中一个重要方面是“正弯矩”的概念。当弯矩倾向于使结构弯曲，从而在梁的底部产生拉伸，在顶部产生压缩时，就会发生“正弯矩”。这通常出现在承载荷载的简单支撑梁中，当施加的荷载导致梁向下变形时，梁跨中心处会产生“正弯矩”。识别“正弯矩”的重要性在于其对材料选择和结构完整性的影响。工程师必须确保所用材料能够承受由此弯矩引起的应力而不发生破坏。例如，如果一根梁经历了较高的“正弯矩”，则材料必须具有足够的抗拉强度以抵抗作用于其上的力。此外，设计必须考虑梁的长度、荷载类型和支撑条件等因素。在分析结构时，工程师通常使用图示来可视化梁沿长度方向的弯矩。这些弯矩图示说明了“正弯矩”出现的位置以及它在不同荷载下的变化。理解这些图示有助于工程师做出明智的决策，例如在结构的某些位置放置加固或额外支撑，以确保结构的安全性和功能性。此外，“正弯矩”的概念不仅限于梁。它还适用于各种结构元素，包括板、框架和桥梁。根据设计和所遇到的荷载，每个组件可能会经历“正弯矩”。例如，在桥梁设计中，“正弯矩”对于确定结构的承载能力至关重要，特别是在车辆施加显著向下力量的区域。此外，理解“正弯矩”对于确保结构的耐久性至关重要。如果结构经受的重复“正弯矩”超过材料的极限，它可能会导致疲劳和最终失效。因此，工程师在评估弯矩对结构性能的影响时，必须考虑荷载持续时间和频率等因素。总之，“正弯矩”的概念在结构工程领域是基础性的。它的影响不仅仅局限于计算；它影响着结构的整体设计、安全性和耐久性。通过深入理解“正弯矩”如何影响不同组件，工程师可以创建不仅符合安全标准而且经得起时间考验的结构。随着工程领域的不断发展，掌握像“正弯矩”这样的概念在未来建筑和设计创新中的重要性将始终是首要任务。