prestressed
简明释义
英[/ˈprɛsˌtrɛst/]美[/ˈprɛsˌtrɛst/]
adj. 预应力的
v. 给……预加应力（prestress 的过去式和过去分词）
英英释义
A technique used in construction where internal stresses are introduced to a material, typically concrete, to improve its performance under load. | 在建筑中使用的一种技术，通过向材料（通常是混凝土）引入内部应力，以改善其承载性能。 |
单词用法
（美）预应力钢筋混凝土 | |
预应力混凝土梁 |
同义词
| 预加载的 | 预加载混凝土用于增强结构完整性。 | ||
| 拉伸的 | 拉伸电缆通常用于桥梁建设。 | ||
| 受力的 | 受力材料可以承受更大的负荷。 |
反义词
例句
1.Research purposes: Creep of concrete has significant influence for prestressed concrete structures.
研究目的：混凝土的徐变对预应力混凝土结构的影响不容忽视。
2.The experiential formulas of temperature effect on prestressed structures can guide design and construction.
本文提出的预应力结构中考虑温度效应的经验公式，可用于指导设计与施工。
3.The ductility can be improved by adopting partial prestressed concrete section.
采用部分预应力混凝土截面能有效改善延性。
4.Repairs were made in 1991 by grouting the cracks and installing prestressed anchors in the cracked areas.
1991年采取了对裂缝水泥灌浆和对裂缝区域混凝土增加预应力的方法进行修复。
5.There are extensive prospects of application for the wave propagation theory in the prestressed and reinforced concrete structures.
因此，在损伤的预应力钢筋混凝土结构中波传播理论的研究具有广泛的应用前景。
6.A new bridge structure, the spatial prestressed cable bridge is described.
介绍桥梁结构的一种新型式—空间预应力索桥。
7.A new kind of reinforced concrete (including prestressed concrete) frame structure with diagonal member is put forward.
提出了一种带腋撑的新型钢筋混凝土(含预应力混凝土)框架结构。
8.Thereby difficult problem that we test relaxation ratio of prestressed concrete steel wire for 1000 hours has been solved.
此法成功地用于生产中，从而解决了预应力钢丝1000小时松弛率检验的难题。
9.The bridge was designed using prestressed 预应力 concrete to withstand heavy loads.
这座桥梁采用了
预应力混凝土设计，以承受重载。
10.The use of prestressed 预应力 cables allows for longer spans in architectural designs.
使用
预应力钢缆可以在建筑设计中实现更长的跨度。
11.Engineers prefer prestressed 预应力 concrete for parking structures due to its ability to reduce cracking.
由于
预应力混凝土能够减少开裂，工程师更喜欢在停车结构中使用它。
12.In modern construction, prestressed 预应力 beams are commonly used for their strength and durability.
在现代建筑中，
预应力梁因其强度和耐久性而被广泛使用。
13.The prestressed 预应力 slabs were installed quickly, speeding up the construction process.
这些
预应力板安装迅速，加快了施工进度。
作文
In the field of civil engineering, the concept of prestressed (预应力) concrete has revolutionized the way structures are designed and built. This innovative technique involves applying a predetermined level of stress to the concrete before it is subjected to external loads. By doing so, engineers can enhance the performance and durability of concrete structures significantly. The application of prestressed (预应力) concrete allows for longer spans and thinner slabs, which not only reduces material usage but also leads to more aesthetically pleasing designs. The process of prestressing (预应力) typically involves two main methods: pre-tensioning and post-tensioning. In pre-tensioning, high-strength steel tendons are stretched before the concrete is poured. Once the concrete hardens, the tendons are released, transferring the stress to the concrete and effectively putting it into compression. On the other hand, post-tensioning involves placing tendons within ducts in the concrete and tensioning them after the concrete has cured. This flexibility allows for adjustments and optimizations based on specific structural requirements. One of the most significant advantages of using prestressed (预应力) concrete is its ability to resist cracking under load. Traditional concrete structures often suffer from tensile stresses that can lead to cracks, compromising the integrity and longevity of the structure. However, with prestressed (预应力) techniques, the initial compressive forces counteract these tensile stresses, resulting in a much more resilient structure. This feature is particularly beneficial in environments exposed to heavy loads, such as bridges and high-rise buildings. Moreover, prestressed (预应力) concrete offers greater control over deflections. Engineers can design beams and slabs to minimize deflection, ensuring that they stay within acceptable limits under service loads. This capability is crucial for maintaining the functionality and appearance of structures, especially in architectural applications where aesthetic considerations are paramount. The use of prestressed (预应力) concrete is not limited to large-scale projects; it is also increasingly applied in residential construction. Homeowners benefit from the advantages of prestressed (预应力) floors and roofs, which can provide larger open spaces without the need for numerous supporting columns. This creates more versatile living environments and enhances the overall value of the property. In conclusion, the adoption of prestressed (预应力) concrete has transformed modern construction practices. Its ability to improve structural performance, reduce material consumption, and offer design flexibility makes it an invaluable tool for engineers and architects alike. As we continue to push the boundaries of what is possible in construction, the role of prestressed (预应力) concrete will undoubtedly become even more prominent, paving the way for innovative designs and sustainable building practices in the future.
在土木工程领域，prestressed（预应力）混凝土的概念彻底改变了结构的设计和建造方式。这种创新技术涉及在混凝土受到外部负荷之前，施加预定水平的应力。通过这样做，工程师可以显著增强混凝土结构的性能和耐久性。prestressed（预应力）混凝土的应用允许更长的跨度和更薄的板，这不仅减少了材料的使用，还导致更美观的设计。prestressing（预应力）的过程通常涉及两种主要方法：预拉伸和后张拉。在预拉伸中，高强度钢筋在混凝土浇筑之前被拉伸。一旦混凝土硬化，钢筋就会释放，将应力转移到混凝土上，有效地使其处于压缩状态。另一方面，后张拉涉及将钢筋放置在混凝土中的管道内，并在混凝土固化后进行张拉。这种灵活性允许根据特定的结构要求进行调整和优化。使用prestressed（预应力）混凝土的一个显著优点是它能够抵抗负载下的开裂。传统的混凝土结构往往遭受拉应力，这可能导致裂缝，从而损害结构的完整性和耐久性。然而，通过prestressed（预应力）技术，初始的压缩力抵消了这些拉应力，从而导致结构更加坚韧。这一特性在暴露于重负荷的环境中尤为有利，例如桥梁和高层建筑。此外，prestressed（预应力）混凝土提供了对挠度的更好控制。工程师可以设计梁和板，以最小化挠度，确保它们在服务负荷下保持在可接受的范围内。这一能力对于维护结构的功能性和外观至关重要，特别是在美学考虑至关重要的建筑应用中。prestressed（预应力）混凝土的使用不仅限于大型项目；它在住宅建筑中也越来越多地得到应用。房主受益于prestressed（预应力）地板和屋顶，这可以提供更大的开放空间，而无需众多支撑柱。这创造了更灵活的生活环境，并提高了物业的整体价值。总之，采用prestressed（预应力）混凝土已经改变了现代建筑实践。它改善结构性能、减少材料消耗以及提供设计灵活性的能力，使其成为工程师和建筑师不可或缺的工具。随着我们继续突破建筑可能性的界限，prestressed（预应力）混凝土的作用无疑会变得更加突出，为未来的创新设计和可持续建筑实践铺平道路。
