lower chord

简明释义

下弦杆

英英释义

例句

1.The contractor reinforced the lower chord (下弦) to improve the overall stability of the bridge.

承包商加固了lower chord (下弦) 以提高桥梁的整体稳定性。

2.In truss design, the lower chord (下弦) provides support for the loads applied to the structure.

在桁架设计中，lower chord (下弦) 为施加于结构的荷载提供支持。

3.During the inspection, the inspector noted some wear on the lower chord (下弦) that needed to be addressed.

在检查过程中，检查员注意到lower chord (下弦) 上有一些磨损需要处理。

4.The design team had to calculate the forces acting on the lower chord (下弦) to ensure safety.

设计团队必须计算作用于lower chord (下弦) 的力以确保安全。

5.The engineer specified that the tension in the lower chord (下弦) must be carefully monitored during construction.

工程师指定在施工过程中必须仔细监测lower chord (下弦) 的张力。

作文

In the field of engineering, particularly in structural engineering, the term lower chord refers to a crucial component of a truss system. A truss is a structure made up of triangular units that distribute loads efficiently. The lower chord is the horizontal member located at the bottom of the truss, which connects the ends of the diagonal members and helps to support the overall structure. Understanding the role of the lower chord is essential for anyone involved in the design and construction of buildings, bridges, and other infrastructures. The lower chord plays a vital role in maintaining the stability and integrity of the truss. It helps to resist tension forces that occur when loads are applied to the structure. For instance, when a heavy load is placed on a bridge, the truss experiences bending moments, and the lower chord works to counteract these forces by providing support from below. This is why engineers must carefully calculate the dimensions and materials used for the lower chord to ensure that it can withstand the expected loads without failure.Moreover, the design of the lower chord can vary depending on the specific requirements of the project. In some cases, the lower chord may be constructed from steel for its high tensile strength, while in other cases, wood might be used for its aesthetic appeal and ease of handling. The choice of material often depends on factors such as cost, availability, and the environmental conditions the structure will face.In addition to its structural functions, the lower chord can also contribute to the overall aesthetic of a building or bridge. Architects often consider how the lower chord integrates with other elements of the design, striving for a balance between functionality and visual appeal. For example, exposed trusses with visible lower chords can create a rustic or industrial look that many find attractive in modern architecture.Furthermore, the maintenance of the lower chord is critical to the longevity of the structure. Regular inspections are necessary to identify any signs of wear, corrosion, or damage. If issues are detected, timely repairs or replacements of the lower chord are essential to prevent catastrophic failures. Engineers often implement protective measures, such as coatings or treatments, to enhance the durability of the lower chord against environmental factors.In conclusion, the lower chord is an integral part of truss systems, serving both structural and aesthetic purposes. Its ability to support loads and maintain stability makes it a key element in various constructions, from bridges to buildings. By understanding the importance of the lower chord, engineers and architects can work together to create safe and visually appealing structures that stand the test of time.

在工程领域，特别是结构工程中，术语lower chord指的是桁架系统中的一个关键组件。桁架是一种由三角形单元组成的结构，可以有效地分配载荷。lower chord是位于桁架底部的水平构件，它连接着对角构件的两端，并有助于支撑整体结构。理解lower chord的作用对于任何参与建筑、桥梁和其他基础设施设计与施工的人来说都是至关重要的。lower chord在维持桁架的稳定性和完整性方面发挥着重要作用。它帮助抵抗在施加载荷时产生的拉力。例如，当重载放置在桥上时，桁架会经历弯曲力矩，而lower chord通过从下方提供支撑来对抗这些力量。这就是为什么工程师必须仔细计算lower chord的尺寸和材料，以确保它能够承受预期的载荷而不发生失效。此外，lower chord的设计可以根据项目的具体要求而有所不同。在某些情况下，lower chord可能使用钢材建造，因为其高抗拉强度，而在其他情况下，木材可能因其美观和易于处理而被采用。材料的选择通常取决于成本、可用性以及结构将面临的环境条件等因素。除了结构功能外，lower chord还可以对建筑或桥梁的整体美感做出贡献。建筑师通常考虑lower chord如何与设计的其他元素相结合，努力在功能性和视觉吸引力之间取得平衡。例如，带有可见lower chords的裸露桁架可以创造出许多人在现代建筑中所喜爱的乡村或工业外观。此外，lower chord的维护对结构的耐久性至关重要。定期检查是识别磨损、腐蚀或损坏迹象的必要措施。如果发现问题，及时修复或更换lower chord对于防止灾难性故障至关重要。工程师通常会实施保护措施，如涂层或处理，以增强lower chord对环境因素的耐久性。总之，lower chord是桁架系统中不可或缺的一部分，既具有结构功能，又具有美学目的。它支持载荷并维持稳定性的能力使其成为各种建筑（从桥梁到建筑物）的关键元素。通过理解lower chord的重要性，工程师和建筑师可以共同努力，创造安全且视觉上吸引人的结构，历经时间的考验。