unbonded tendon

简明释义

未粘合的预应力钢筋

英英释义

例句

1.An unbonded tendon 未粘合的肌腱 may cause pain and limit mobility if not treated properly.

如果不正确治疗，unbonded tendon 未粘合的肌腱可能会导致疼痛并限制活动能力。

2.Physical therapy can help strengthen the area around an unbonded tendon 未粘合的肌腱 to prevent further injury.

物理治疗可以帮助加强一个unbonded tendon 未粘合的肌腱周围的区域，以防止进一步受伤。

3.The surgeon explained that the issue was due to an unbonded tendon 未粘合的肌腱 in the patient's wrist.

外科医生解释说，问题是由于患者手腕中的一个unbonded tendon 未粘合的肌腱引起的。

4.The doctor recommended surgery to repair the unbonded tendon 未粘合的肌腱 to restore full function.

医生建议进行手术修复unbonded tendon 未粘合的肌腱以恢复完全功能。

5.In some cases, an unbonded tendon 未粘合的肌腱 can heal on its own with rest and rehabilitation.

在某些情况下，unbonded tendon 未粘合的肌腱可以通过休息和康复自行愈合。

作文

In the field of civil engineering, particularly in the construction of concrete structures, the term unbonded tendon is crucial for understanding how prestressed concrete works. Prestressing is a technique used to improve the performance of concrete by introducing internal stresses before any external loads are applied. This is achieved by placing high-strength steel tendons within the concrete. These tendons can either be bonded or unbonded, each serving a different purpose and having distinct characteristics.An unbonded tendon refers to a type of tendon that is not adhered to the surrounding concrete. Instead, it is housed within a protective duct, allowing it to move freely within the concrete structure. This design offers several advantages, especially in terms of flexibility and adaptability. For instance, because the tendon is unbonded, it can be adjusted or replaced without needing to demolish the surrounding concrete. This is particularly useful in maintenance scenarios where structural integrity must be preserved while addressing issues with the prestressing system.The use of unbonded tendons is common in applications where tensioning needs to be adjusted over time due to environmental factors or loading conditions. In contrast, bonded tendons are fixed in place and transfer their stresses directly to the concrete, which can lead to complications if the concrete undergoes significant cracking or movement. With unbonded tendons, engineers have the ability to mitigate these risks by allowing for some movement, thus enhancing the overall durability and longevity of the structure.Moreover, the installation process for unbonded tendons tends to be simpler and faster compared to bonded systems. Since they do not require the same level of precision in bonding to the concrete, construction teams can save time and reduce labor costs. This efficiency can be particularly beneficial in large-scale projects where timelines and budgets are critical factors.However, it is essential to consider the potential drawbacks of using unbonded tendons. One of the main concerns is the risk of corrosion, as the tendons are exposed to the environment within the duct. Engineers must take care to ensure that proper protective measures, such as using corrosion-resistant materials or applying protective coatings, are implemented to prevent deterioration over time. Additionally, the design of the duct itself must be carefully considered to avoid any issues related to movement or displacement during the life of the structure.In conclusion, understanding the concept of unbonded tendons is vital for civil engineers and architects involved in the design and construction of prestressed concrete structures. Their unique characteristics provide both benefits and challenges that must be carefully weighed in the planning stages of a project. By leveraging the advantages of unbonded tendons, engineers can create more resilient and adaptable structures that stand the test of time. As construction technology continues to advance, the role of unbonded tendons will likely evolve, leading to even more innovative applications in the field of engineering.

在土木工程领域，特别是在混凝土结构的施工中，术语unbonded tendon对于理解预应力混凝土的工作原理至关重要。预应力是一种通过在施加任何外部负载之前引入内部应力来改善混凝土性能的技术。这是通过将高强度钢筋放置在混凝土中实现的。这些钢筋可以是粘结的或非粘结的，各自具有不同的用途和特性。unbonded tendon指的是一种不与周围混凝土粘结的钢筋。相反，它被放置在一个保护性的管道内，使其在混凝土结构中自由移动。这种设计提供了多个优点，特别是在灵活性和适应性方面。例如，由于钢筋是非粘结的，因此可以在不需要拆除周围混凝土的情况下进行调整或更换。这在维护场景中特别有用，在这些场景中，必须保持结构的完整性，同时解决预应力系统的问题。使用unbonded tendons在需要根据环境因素或荷载条件随时间调整张力的应用中是很常见的。相比之下，粘结钢筋固定在位置上，并将其应力直接传递给混凝土，这可能会导致混凝土出现重大裂缝或位移时出现复杂情况。通过使用非粘结钢筋，工程师能够通过允许一些运动来减轻这些风险，从而增强结构的整体耐久性和使用寿命。此外，安装unbonded tendons的过程通常比粘结系统简单且更快。由于它们不需要与混凝土的粘结精度，因此施工团队可以节省时间并降低人工成本。这种效率在大型项目中尤其有利，因为时间表和预算是关键因素。然而，考虑使用unbonded tendons的潜在缺点也很重要。主要关注之一是腐蚀风险，因为钢筋暴露在管道内的环境中。工程师必须小心确保采取适当的保护措施，例如使用耐腐蚀材料或涂覆保护涂层，以防止随着时间的推移而恶化。此外，管道本身的设计必须仔细考虑，以避免在结构生命周期内出现任何与运动或位移相关的问题。总之，理解unbonded tendons的概念对于参与预应力混凝土结构设计和施工的土木工程师和建筑师至关重要。它们独特的特性提供了优点和挑战，必须在项目规划阶段仔细权衡。通过利用unbonded tendons的优势，工程师可以创建更具韧性和适应性的结构，经得起时间的考验。随着建筑技术的不断进步，unbonded tendons的作用可能会不断演变，导致在工程领域中出现更多创新的应用。