The Key Role Of Electro-Hydraulic Tools In Bridge Construction

Bridge construction is a complex project that requires high-strength and high-precision construction equipment to ensure the stability of the structure and construction efficiency. In this process, electro-hydraulic tools play a vital role in many aspects of bridge construction with their strong power, precise control and efficient operation. This article will introduce the key applications of electro-hydraulic tools in bridge construction to help you better understand how these devices can help modern bridge engineering.

1. Bridge steel structure assembly and connection

The steel structure of the bridge is usually composed of multiple large steel beams, steel plates and other components, which need to be precisely assembled and connected with high strength, and electro-hydraulic tools provide an efficient solution in this process.

Hydraulic torque wrench: used to tighten or remove high-strength bolts of bridge steel structures to ensure a firm connection and prevent structural damage caused by insufficient or over-tightening torque.

Hydraulic tensioner: used to accurately control the preload of the bolts, especially for high-strength bolt connections at the main beams and piers of the bridge.

Hydraulic riveting machine: used for the installation of rivets in bridge steel structures to ensure a firm connection between metal plates and improve structural durability.

2. Lifting and adjustment of prefabricated bridge components

Modern bridge construction often uses prefabricated component assembly technology, such as prefabricated beam segments, bridge decks, etc. These components are large in size and extremely heavy, and require high-precision tools for lifting and positioning.

Hydraulic synchronous jack: used to lift and accurately adjust the position of prefabricated bridge components to ensure the docking accuracy between components and avoid damage to the bridge structure due to displacement errors.

Hydraulic jacking system: used for support, lifting and lowering operations in bridge construction, such as adjusting the height of pier cap beams or posture adjustment during bridge erection.

Hydraulic traction machine: used to traction and position steel beams or concrete segments in bridge cantilever assembly construction to ensure the precise installation of each module.

3. Bridge expansion joint installation and maintenance

The expansion joint of the bridge can adapt to the displacement of the bridge body caused by temperature changes or loads, ensuring the stability of the bridge structure. Electric hydraulic tools can efficiently and accurately complete the installation and subsequent maintenance of expansion joints.

Hydraulic cutting machine: used to cut the expansion joint notch to ensure the flatness of the cut and improve the installation quality of the expansion joint.

Hydraulic impact drill: used to drill holes and install expansion joint fixing bolts to ensure a stable connection and prevent loosening or cracking.

Hydraulic grouting machine: used to pour concrete or sealing materials under the expansion joint to improve the waterproofness and durability of the bridge deck.

4. Bridge bearing installation and replacement

Bridge bearings are an important part of the bridge structure, which plays a role in transferring loads and adapting to the deformation of the bridge body. When installing and replacing bridge bearings, electric hydraulic tools can provide efficient and safe operation support.

Hydraulic jack: used to lift the bridge so that construction workers can safely install or replace the bearings, and are often used in the repair and reinforcement of old bridges.

Hydraulic shearing machine: used to cut the steel bars or concrete components of the old bearings, improve the demolition efficiency and reduce the construction time.

Hydraulic bolt tensioner: used to fix the bearing connection bolts to ensure that the bearings are firmly connected and improve the overall stability of the bridge.

5. Bridge cable structure tensioning and maintenance

For cable-stayed bridges or suspension bridges, the tensioning and maintenance of the cable structure are important links to ensure the safety of the bridge, and electric hydraulic tools play a key role in this process.

Hydraulic tensioning equipment: used to accurately tension the inclined cables or suspension cables to ensure that the bridge structure is evenly stressed and prevent uneven cable force from causing deformation of the bridge body.

Hydraulic oil pump system: provides a high-pressure hydraulic power source to ensure the stable operation of the tensioning equipment and improve construction accuracy.

Hydraulic shearing and spreading pliers: used to replace or repair steel cable clamps to improve the maintenance efficiency of bridge cable structures.

6. Bridge inspection and reinforcement projects

As the service life of bridges increases, regular inspection and reinforcement maintenance have become important tasks to ensure bridge safety. Electric hydraulic tools also play an important role in bridge inspection and reinforcement projects.

Hydraulic drilling machine: used to drill concrete core samples of bridge bodies to detect the health of the internal structure of the bridge.

Hydraulic breaker: used to remove damaged areas of the bridge deck or perform local concrete repairs to improve the efficiency of reinforcement construction.

Hydraulic spray machine: used to spray special reinforcement materials, such as polymer mortar or carbon fiber reinforced materials, to improve the bearing capacity of bridges.