[Column] What are bearings? Supporting bridge girders with various types of components.
Introducing the basic functions, history, and types of supports! Also explaining their relationship with expansion devices.
It refers to the components installed between the upper structure of the bridge (main girder/main frame) and the lower structure (abutments and piers). Also known as "kutsu," it is called "bridge bearing" in English. These components accommodate the expansion and contraction of the girder due to temperature changes and the deflection caused by live loads, and since they constantly support the bridge girder, they are a very important part. A bridge that connects the upper structure directly to the lower structure without installing bearings is called a rigid-frame bridge. *For detailed information about the columns, please refer to the related links. For more information, feel free to contact us.
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CRETEC, a company under Crittec Industries, was born from the combination of Create (creation) and Technology. As a comprehensive manufacturer of bridge expansion devices, we continue to develop expansion devices that contribute to the longevity of bridges and environmental protection. Moreover, we do not stop at product manufacturing; by consistently handling everything from research, design, manufacturing, sales, to construction in-house, we can manufacture and install expansion devices that meet the requests of our clients and general contractors, as well as the conditions and environments of the bridges and roads on-site. We also take into account the issues that arise during the installation of expansion devices and the damage conditions of existing devices that are removed, using this information to improve and develop our products. Please feel free to contact us for inquiries about bridge expansion devices, requests for materials, or estimates. ◆ What is a bridge expansion device? It is a component installed in the gap between the bridge abutment and the bridge girder, or between bridge girders. When designing a bridge, it is necessary to create a gap to prevent the bridge girders from colliding due to expansion and contraction caused by temperature changes. The bridge expansion device is required to cover this gap and ensure safe passage for vehicles and pedestrians.