long span bridge

简明释义

长跨桥

英英释义

例句

1.The long span bridge was completed ahead of schedule, showcasing the efficiency of the construction team.

这座长跨径桥提前完工，展示了施工团队的高效。

2.Engineers are studying various materials to ensure the durability of the long span bridge.

工程师们正在研究各种材料，以确保长跨径桥的耐久性。

3.The long span bridge over the river is a marvel of modern engineering.

这座横跨河流的长跨径桥是现代工程的奇迹。

4.The construction of the new long span bridge has significantly improved traffic flow in the region.

新的长跨径桥的建造显著改善了该地区的交通流量。

5.Many cities are investing in long span bridges to connect different parts of the urban area.

许多城市正在投资建设长跨径桥以连接城市的不同部分。

作文

The concept of a long span bridge is crucial in modern engineering and architecture. A long span bridge is defined as a bridge that has a main span length greater than 100 meters, and it serves a vital role in connecting regions, facilitating transportation, and enhancing economic growth. The design and construction of a long span bridge require advanced engineering techniques and materials to ensure safety, durability, and functionality. These bridges are often built over rivers, valleys, or other obstacles where traditional bridge designs may not be feasible.One of the most famous examples of a long span bridge is the Golden Gate Bridge in San Francisco, California. Completed in 1937, it spans approximately 1,280 meters and was once the longest and tallest suspension bridge in the world. The Golden Gate Bridge not only serves as a critical transportation link but also stands as an iconic symbol of engineering prowess. Its unique design, featuring Art Deco elements, attracts millions of tourists each year, showcasing how a long span bridge can have both functional and aesthetic value.Another notable example is the Akashi Kaikyō Bridge in Japan, which holds the record for the longest central span of any suspension bridge at 1,991 meters. This long span bridge was completed in 1995 after being delayed by a major earthquake. The innovative engineering techniques used in its construction included the use of high-strength steel cables and advanced seismic resistance measures, demonstrating the importance of adapting modern technology to build safe and resilient infrastructure.The construction of a long span bridge involves several stages, including site analysis, design, material selection, and actual building. Engineers must consider various factors such as environmental impact, budget constraints, and the specific needs of the communities they serve. For instance, when planning a long span bridge, engineers must assess the geological conditions of the area, ensuring that the foundation can support the immense weight of the structure while withstanding natural forces like wind and earthquakes.Moreover, the materials used in constructing a long span bridge are critical to its longevity and safety. Common materials include steel and reinforced concrete, which provide the necessary strength and flexibility. Innovations in material science have led to the development of lighter and stronger materials, enabling the construction of even longer spans. Additionally, the use of advanced computer modeling and simulation techniques allows engineers to optimize designs for performance and cost-effectiveness.In conclusion, long span bridges are remarkable feats of engineering that play a significant role in our transportation networks and urban landscapes. They symbolize human ingenuity and the ability to overcome geographical challenges. As cities continue to grow and the demand for efficient transportation increases, the importance of long span bridges will only continue to rise. Future advancements in technology and materials will likely lead to even more impressive structures, further enhancing our connectivity and shaping the world around us.

“长跨度桥”的概念在现代工程和建筑中至关重要。“长跨度桥”被定义为主跨度长度超过100米的桥梁，它在连接地区、促进交通和增强经济增长方面发挥着重要作用。“长跨度桥”的设计和建造需要先进的工程技术和材料，以确保安全、耐用和功能性。这些桥通常建在河流、山谷或其他障碍物上，传统桥梁设计可能不适用。最著名的“长跨度桥”之一是位于加利福尼亚州旧金山的金门大桥。该桥于1937年建成，跨度约为1280米，曾是世界上最长和最高的悬索桥。金门大桥不仅是重要的交通连接，也是工程才能的标志性象征。它独特的设计，结合了装饰艺术风格，每年吸引数百万游客，展示了“长跨度桥”在功能和美学上的价值。另一个值得注意的例子是日本的明石海峡大桥，它拥有任何悬索桥最长的中央跨度，达1991米。这座“长跨度桥”于1995年完工，之前因重大地震而延误。其建设中采用的创新工程技术包括使用高强度钢缆和先进的抗震措施，展示了将现代技术应用于构建安全和韧性基础设施的重要性。“长跨度桥”的建设涉及多个阶段，包括现场分析、设计、材料选择和实际建造。工程师必须考虑各种因素，如环境影响、预算限制以及他们服务的社区的具体需求。例如，在规划“长跨度桥”时，工程师必须评估该地区的地质条件，确保基础能够支撑结构的巨大重量，同时抵御风和地震等自然力量。此外，建造“长跨度桥”所使用的材料对其耐用性和安全性至关重要。常用材料包括钢和钢筋混凝土，它们提供所需的强度和灵活性。材料科学的创新导致更轻、更强材料的发展，使得建造更长的跨度成为可能。此外，先进的计算机建模和仿真技术的使用使工程师能够优化设计，以提高性能和成本效益。总之，“长跨度桥”是令人惊叹的工程壮举，在我们的交通网络和城市景观中发挥着重要作用。它们象征着人类的聪明才智和克服地理挑战的能力。随着城市的不断发展和对高效交通的需求增加，“长跨度桥”的重要性只会继续上升。未来材料和技术的进步可能会导致更令人印象深刻的结构，进一步增强我们的连通性并塑造我们周围的世界。