post—tensioned prestressed concrete structure

简明释义

后张法预应力混凝土结构

英英释义

例句

1.Engineers prefer post—tensioned prestressed concrete structures for high-rise buildings due to their superior strength.

工程师们更喜欢在高层建筑中使用后张预应力混凝土结构，因为它们具有优越的强度。

2.The new bridge was designed using a post—tensioned prestressed concrete structure to enhance its load-bearing capacity.

新桥的设计采用了后张预应力混凝土结构以增强其承载能力。

3.In seismic regions, a post—tensioned prestressed concrete structure provides better resistance to earthquakes.

在地震多发地区，后张预应力混凝土结构提供了更好的抗震性能。

4.The contractor recommended a post—tensioned prestressed concrete structure for the parking garage to maximize space efficiency.

承包商建议为停车库采用后张预应力混凝土结构以最大化空间利用率。

5.The use of a post—tensioned prestressed concrete structure allowed for longer spans in the roof design.

使用后张预应力混凝土结构使屋顶设计可以实现更长的跨距。

作文

The field of civil engineering has witnessed significant advancements over the years, particularly in the design and construction of structures that require both strength and durability. One such innovation is the use of post—tensioned prestressed concrete structure, which has revolutionized the way we approach large-scale construction projects. This technique involves the application of tension to steel tendons that are embedded within the concrete, allowing the material to better withstand various stresses and loads. The process of creating a post—tensioned prestressed concrete structure begins with the placement of these tendons in a manner that aligns with the anticipated forces acting on the structure. Once the concrete is poured and has reached sufficient strength, the tendons are then tensioned using hydraulic jacks. This action compresses the concrete, enhancing its capacity to resist tensile forces that could lead to cracking or failure.The benefits of employing a post—tensioned prestressed concrete structure are manifold. Firstly, it allows for longer spans between supports, which is particularly advantageous in the construction of bridges and large buildings. By reducing the number of columns or supports needed, architects can create more open and flexible spaces that are aesthetically pleasing and functional. Furthermore, this method can lead to a significant reduction in the overall amount of concrete used, making it a more sustainable choice in terms of material consumption.Moreover, the durability of a post—tensioned prestressed concrete structure is enhanced due to the pre-compression of the concrete, which helps prevent the formation of cracks under load. This characteristic not only extends the lifespan of the structure but also reduces maintenance costs over time. In regions prone to seismic activity, the ability of these structures to absorb and dissipate energy makes them an ideal choice for ensuring safety and resilience.However, the implementation of a post—tensioned prestressed concrete structure does come with its challenges. The initial cost of materials and the complexity of the installation process can be higher than traditional methods. Engineers and contractors must possess specialized knowledge and skills to ensure that the tendons are properly placed and tensioned, which necessitates thorough training and experience.In conclusion, the post—tensioned prestressed concrete structure represents a significant advancement in civil engineering, offering enhanced durability, flexibility, and sustainability. As the industry continues to evolve, it is essential for future engineers to understand and master these innovative techniques to meet the growing demands for efficient and resilient infrastructure. The continued research and development in this area will undoubtedly lead to even more sophisticated applications and improvements in construction practices, ultimately benefiting society as a whole.

土木工程领域多年来见证了显著的进步，特别是在需要强度和耐久性的结构设计和施工方面。其中一种创新是使用后张预应力混凝土结构，这彻底改变了我们对大型建筑项目的处理方式。这种技术涉及在混凝土中嵌入钢筋 tendon 并施加张力，使材料更好地承受各种应力和负荷。创建后张预应力混凝土结构的过程从将这些 tendon 放置在与结构上预期作用的力相一致的方式开始。一旦混凝土浇筑并达到足够的强度，就会使用液压千斤顶对 tendon 进行张拉。这一操作使混凝土受到压缩，从而增强其抵抗可能导致开裂或失效的拉力的能力。采用后张预应力混凝土结构的好处是多方面的。首先，它允许在支撑之间实现更长的跨距，这在桥梁和大型建筑的建设中尤为有利。通过减少所需的柱子或支撑数量，建筑师可以创造出更加开放和灵活的空间，这既美观又实用。此外，这种方法可以显著减少所用混凝土的总体数量，使其在材料消耗方面成为更可持续的选择。此外，由于混凝土的预压缩，后张预应力混凝土结构的耐久性得到增强，这有助于防止在载荷下形成裂缝。这一特性不仅延长了结构的使用寿命，还降低了长期维护成本。在地震活动频繁的地区，这些结构吸收和消散能量的能力使它们成为确保安全和韧性的理想选择。然而，实施后张预应力混凝土结构确实存在挑战。材料的初始成本和安装过程的复杂性可能高于传统方法。工程师和承包商必须具备专业知识和技能，以确保 tendon 正确放置和张拉，这需要经过全面的培训和经验。总之，后张预应力混凝土结构代表了土木工程的一项重大进步，提供了增强的耐久性、灵活性和可持续性。随着行业的不断发展，未来的工程师必须理解和掌握这些创新技术，以满足对高效和韧性基础设施日益增长的需求。在这一领域的持续研究和开发无疑将导致更复杂的应用和施工实践的改进，最终使整个社会受益。