pretensioned construction

简明释义

先张拉构造

英英释义

例句

1.The cost-effectiveness of pretensioned construction makes it a popular choice among developers.

预应力施工的成本效益使其成为开发商的热门选择。

2.The use of pretensioned construction in bridge design allows for longer spans without the need for additional supports.

在桥梁设计中使用预应力施工可以实现更长的跨距，而无需额外的支撑。

3.Engineers often prefer pretensioned construction for parking garages due to its ability to handle heavy loads.

工程师通常更喜欢用于停车场的预应力施工，因为它能够承受重载。

4.In seismic areas, pretensioned construction provides enhanced stability and resistance to earthquakes.

在地震频发地区，预应力施工提供了增强的稳定性和抗震能力。

5.The strength of pretensioned construction materials can significantly reduce the overall weight of a structure.

预应力施工材料的强度可以显著减轻结构的整体重量。

作文

In modern engineering, the term pretensioned construction refers to a method of reinforcing concrete structures by applying tension to steel tendons before the concrete is cast. This technique enhances the structural integrity and load-bearing capacity of the concrete, making it an essential practice in the construction industry. The process begins by placing high-strength steel cables or rods, known as tendons, into the forms where the concrete will be poured. These tendons are then stretched or tensioned using hydraulic jacks before the concrete is cast around them. Once the concrete has cured and reached sufficient strength, the tension on the tendons is released, allowing them to compress the concrete. This compression counteracts the tensile forces that the structure will experience during its service life, thus significantly improving its performance.The advantages of pretensioned construction are manifold. Firstly, it allows for longer spans between supports, which is particularly beneficial in applications such as bridges and large buildings. By minimizing the number of supports needed, architects can create more open and aesthetically pleasing spaces. Secondly, this method reduces the likelihood of cracking in the concrete, leading to longer-lasting structures with lower maintenance costs. Additionally, pretensioned construction can result in lighter structures, as the materials used can be optimized thanks to the enhanced strength provided by the pretensioning process.However, implementing pretensioned construction also comes with challenges. The initial cost can be higher than traditional methods due to the need for specialized equipment and expertise. Moreover, if not executed properly, the tensioning process can lead to defects in the concrete, such as uneven stresses or premature cracking. Therefore, it is crucial for engineers and construction professionals to have a thorough understanding of the principles and techniques involved in pretensioned construction to ensure successful outcomes.In conclusion, pretensioned construction represents a significant advancement in concrete technology, providing numerous benefits that enhance the durability and efficiency of structures. As the demand for innovative construction solutions continues to grow, the use of pretensioned construction is likely to become even more prevalent in the future. Understanding this technique is essential for anyone involved in the field of civil engineering or construction, as it plays a vital role in shaping the built environment of tomorrow.

在现代工程中，术语预应力施工指的是一种通过在混凝土浇筑前对钢筋施加拉力来增强混凝土结构的方法。这种技术提高了混凝土的结构完整性和承载能力，使其成为建筑行业的重要实践。该过程开始时，将高强度钢缆或杆（称为钢筋）放置在混凝土将要浇筑的模具中。这些钢筋随后使用液压千斤顶进行拉伸或张紧，然后再在其周围浇筑混凝土。一旦混凝土固化并达到足够的强度，就会释放钢筋上的拉力，使其压缩混凝土。这种压缩抵消了结构在服务期间所经历的拉力，从而显著提高了其性能。预应力施工的优点是多方面的。首先，它允许支撑之间的跨度更长，这在桥梁和大型建筑等应用中尤其有利。通过减少所需支撑的数量，建筑师可以创造出更加开放和美观的空间。其次，这种方法减少了混凝土开裂的可能性，从而导致结构的耐用性更长，维护成本更低。此外，由于预应力过程提供的增强强度，预应力施工还可以导致较轻的结构，因为所用材料可以得到优化。然而，实施预应力施工也面临挑战。由于需要专业设备和专业知识，初始成本可能高于传统方法。此外，如果执行不当，张拉过程可能导致混凝土缺陷，例如应力不均匀或过早开裂。因此，工程师和施工专业人员必须深入了解预应力施工的原理和技术，以确保成功的结果。总之，预应力施工代表了混凝土技术的重要进步，提供了众多好处，增强了结构的耐久性和效率。随着对创新施工解决方案的需求不断增长，预应力施工的使用在未来可能会变得更加普遍。理解这一技术对于任何从事土木工程或建筑领域的人来说都是至关重要的，因为它在塑造未来建筑环境中发挥着至关重要的作用。