pre post tensioning

简明释义

先张 后张拉

英英释义

例句

1.By implementing pre post tensioning 预应力后张法, the construction team was able to reduce the amount of concrete needed.

通过实施pre post tensioning 预应力后张法，施工团队能够减少所需的混凝土量。

2.The engineers decided to use pre post tensioning 预应力后张法 for the new bridge to enhance its durability.

工程师们决定对新桥使用pre post tensioning 预应力后张法以增强其耐久性。

3.The pre post tensioning 预应力后张法 technique is commonly used in high-rise buildings to support heavy loads.

在高层建筑中，pre post tensioning 预应力后张法技术被广泛用于支撑重载。

4.Using pre post tensioning 预应力后张法, the designers were able to create longer spans without additional supports.

利用pre post tensioning 预应力后张法，设计师能够在没有额外支撑的情况下创造更长的跨度。

5.The success of the project relied heavily on the effective application of pre post tensioning 预应力后张法 techniques.

项目的成功在很大程度上依赖于有效应用pre post tensioning 预应力后张法技术。

作文

In modern construction, the techniques used to enhance the strength and durability of concrete structures have evolved significantly. One such technique that has gained prominence is pre post tensioning, which refers to a method of reinforcing concrete by applying tension to steel tendons before and after the concrete is poured. This process not only improves the load-bearing capacity of the concrete but also helps in minimizing cracking and deformation, making it an essential practice in contemporary engineering.The process of pre post tensioning begins with the installation of high-strength steel tendons within the concrete formwork. These tendons are typically made of multiple strands of steel wire that are grouped together. In the pre-tensioning phase, the tendons are stretched before the concrete is cast. Once the concrete reaches the desired strength, the tension in the tendons is released, compressing the concrete and enhancing its performance under loads.On the other hand, in the post-tensioning phase, the tendons are placed in ducts within the concrete and then tensioned after the concrete has set. This allows for greater flexibility in construction, as the tension can be adjusted based on the specific requirements of the structure. The use of pre post tensioning is particularly beneficial in large spans, such as bridges and parking garages, where traditional reinforcement methods may not suffice.Moreover, the advantages of pre post tensioning extend beyond mere structural integrity. This technique also allows for thinner slabs and longer spans, which can lead to more efficient use of materials and reduced overall costs. Additionally, because the concrete is placed under compression, it is less susceptible to tensile stresses, which can lead to cracking and failure. Therefore, the implementation of pre post tensioning can contribute to longer-lasting structures that require less maintenance over time.However, it is essential to recognize that the successful application of pre post tensioning requires careful planning and execution. Engineers must consider various factors, including the type of concrete used, the environmental conditions, and the specific loads that the structure will encounter. Proper design and analysis are crucial to ensure that the tensioning forces are appropriately balanced and that the structure performs as intended.In conclusion, pre post tensioning represents a significant advancement in the field of construction and engineering. By effectively utilizing this technique, engineers can create stronger, more durable, and cost-effective structures that meet the demands of modern society. As construction practices continue to evolve, the role of pre post tensioning will undoubtedly become even more critical in achieving innovative and sustainable solutions in the built environment.

在现代建筑中，用于增强混凝土结构强度和耐久性的技术已经显著发展。其中一种逐渐受到重视的技术是预应力后张法，指的是通过对钢筋施加张力来增强混凝土的一种方法，分为浇筑前和浇筑后。这一过程不仅提高了混凝土的承载能力，还帮助减少开裂和变形，使其成为当代工程中的重要实践。预应力后张法的过程始于在混凝土模板内安装高强度钢筋。这些钢筋通常由多根钢丝组成。在预应力阶段，钢筋在混凝土浇筑之前被拉伸。一旦混凝土达到所需强度，就会释放钢筋的张力，从而压缩混凝土并增强其在荷载下的表现。另一方面，在后张阶段，钢筋被放置在混凝土内部的管道中，然后在混凝土固化后进行张拉。这为施工提供了更大的灵活性，因为可以根据结构的具体要求调整张力。预应力后张法在大跨度结构中尤其有利，例如桥梁和停车场，传统的加固方法可能无法满足要求。此外，预应力后张法的优势不仅限于结构完整性。这项技术还允许使用更薄的板材和更长的跨度，从而更有效地利用材料并降低整体成本。此外，由于混凝土处于压缩状态，它对拉应力的敏感性较低，这可以减少开裂和失效。因此，实施预应力后张法可以促进更持久的结构，随着时间的推移需要更少的维护。然而，必须认识到，成功应用预应力后张法需要仔细的规划和执行。工程师必须考虑各种因素，包括所用混凝土的类型、环境条件以及结构将遇到的特定荷载。适当的设计和分析对于确保张力力量的适当平衡和结构按预期性能至关重要。总之，预应力后张法代表了建筑和工程领域的重要进步。通过有效利用这项技术，工程师可以创建更强大、更耐用且具有成本效益的结构，以满足现代社会的需求。随着建筑实践的不断发展，预应力后张法在实现创新和可持续解决方案方面无疑会变得更加重要。