external prestressing cable

简明释义

外部预拉钢丝束

英英释义

例句

1.Engineers installed the external prestressing cable to counteract the tensile forces in the structure.

工程师安装了外部预应力钢索以抵消结构中的拉力。

2.During the construction, the team carefully monitored the tension of the external prestressing cable.

在施工过程中，团队仔细监测了外部预应力钢索的张力。

3.The use of external prestressing cables allows for longer spans in bridge design.

使用外部预应力钢索可以实现桥梁设计中的更长跨距。

4.The bridge was designed with an external prestressing cable to improve its load-bearing capacity.

这座桥的设计采用了外部预应力钢索以提高其承载能力。

5.A detailed inspection revealed that the external prestressing cable had corroded over time.

详细检查显示，外部预应力钢索随着时间的推移已经腐蚀。

作文

In the field of civil engineering, the use of prestressed concrete has revolutionized the construction of structures such as bridges and buildings. One of the key components in prestressed concrete is the use of cables that are tensioned before the concrete is poured. These cables are known as external prestressing cables, which play a crucial role in enhancing the structural integrity and performance of concrete elements. The concept of prestressing involves applying a compressive force to the concrete, which counteracts the tensile forces that occur when the structure is in use. This technique allows for longer spans and thinner slabs, providing architects and engineers with greater flexibility in design.The external prestressing cables are typically placed outside the concrete element, which allows for easier inspection and maintenance compared to internal cables. This external placement also enables the cables to be adjusted or replaced if necessary, ensuring the longevity and safety of the structure. By using these cables, engineers can effectively manage the stresses within the concrete, leading to improved durability and reduced risk of cracking.One of the significant advantages of external prestressing cables is their ability to accommodate various loading conditions. For instance, in bridge construction, where dynamic loads from traffic and environmental factors are prevalent, these cables provide the necessary support to maintain stability. They help distribute loads more evenly across the structure, minimizing deformation and enhancing overall performance.Additionally, the use of external prestressing cables can lead to cost savings in construction. Since they allow for lighter and more efficient designs, less material is required, which can significantly reduce both material costs and labor expenses. Furthermore, the improved performance of structures with prestressing often translates into lower maintenance costs over time, making it a financially viable option for many projects.Despite the numerous benefits, the implementation of external prestressing cables does come with challenges. Engineers must carefully consider the design and installation process to ensure proper tensioning and anchoring of the cables. Any miscalculation can lead to structural issues, compromising the safety and effectiveness of the prestressing system. Therefore, rigorous testing and monitoring are essential throughout the construction process.In conclusion, external prestressing cables represent a vital advancement in the field of civil engineering, offering enhanced structural performance, cost efficiency, and design flexibility. As the demand for innovative construction solutions continues to grow, the application of these cables will likely expand, paving the way for safer and more durable infrastructures. Understanding the mechanics and benefits of external prestressing cables is crucial for engineers and architects alike, as they strive to create resilient structures that can withstand the test of time.

在土木工程领域，预应力混凝土的使用彻底改变了桥梁和建筑等结构的施工。预应力混凝土中的一个关键组成部分是张紧的电缆，这些电缆在混凝土浇筑之前就已施加张力。这些电缆被称为外部预应力电缆，它们在增强混凝土构件的结构完整性和性能方面发挥着至关重要的作用。预应力的概念涉及对混凝土施加压缩力，以抵消在结构使用时发生的拉伸力。这项技术允许更长的跨度和更薄的板，为建筑师和工程师提供了更大的设计灵活性。外部预应力电缆通常放置在混凝土构件的外部，这使得与内部电缆相比，更容易进行检查和维护。这种外部布置还使得电缆可以在必要时进行调整或更换，从而确保结构的耐久性和安全性。通过使用这些电缆，工程师能够有效管理混凝土内部的应力，从而提高耐久性并减少开裂风险。外部预应力电缆的一个显著优势是其能够适应各种荷载条件。例如，在桥梁施工中，交通和环境因素带来的动态荷载普遍存在，这些电缆提供了必要的支撑，以维持稳定性。它们有助于更均匀地分配荷载，最小化变形并增强整体性能。此外，使用外部预应力电缆还可以降低施工成本。由于它们允许更轻便和更高效的设计，因此所需材料更少，这可以显著降低材料成本和人工费用。此外，具有预应力的结构的改善性能通常意味着随着时间的推移，维护成本较低，使其成为许多项目的经济可行选择。尽管有众多好处，实施外部预应力电缆确实面临挑战。工程师必须仔细考虑设计和安装过程，以确保电缆的正确张紧和锚固。任何计算错误都可能导致结构问题，危及预应力系统的安全性和有效性。因此，在整个施工过程中，严格的测试和监测至关重要。总之，外部预应力电缆代表了土木工程领域的一项重要进展，提供了增强的结构性能、成本效率和设计灵活性。随着对创新施工解决方案的需求不断增长，这些电缆的应用可能会扩展，为更安全、更耐用的基础设施铺平道路。理解外部预应力电缆的机制和好处对工程师和建筑师来说至关重要，因为他们努力创造能够经受住时间考验的坚固结构。