What are the characteristics of pot type rubber bearings for highway bridges
The pot type rubber bearings for highway bridges have the following characteristics:
1.Large carrying capacity:
The structural design of pot type rubber bearings enables them to withstand large vertical loads and meet the bearing requirements of large highway bridges. Through the synergistic effect of steel bottom basin and internal rubber blocks, the load transmitted from the upper struct
The pot type rubber bearings for highway bridges have the following characteristics:
1.Large carrying capacity:
The structural design of pot type rubber bearings enables them to withstand large vertical loads and meet the bearing requirements of large highway bridges. Through the synergistic effect of steel bottom basin and internal rubber blocks, the load transmitted from the upper structure of the bridge can be evenly dispersed and transmitted to the lower structure, effectively ensuring the safety and stability of the bridge. For example, in some large cross sea bridges, urban overpasses and other projects, pot type rubber bearings are important supporting components.
2.Large horizontal displacement:
This support can adapt to significant horizontal displacement of the bridge caused by temperature changes, concrete shrinkage and creep, vehicle loads, and other factors. The low friction coefficient between the polytetrafluoroethylene plate and the stainless steel plate in the support provides convenient conditions for the horizontal sliding of the upper structure, ensuring the free deformation of the bridge in the horizontal direction, reducing the additional stress caused by limited horizontal displacement, and improving the service life of the bridge.
3.Flexible rotation:
Basin type rubber bearings can meet the rotational requirements of the upper structure of the bridge within a certain angle range, enabling the bridge to better adapt to terrain changes, vibrations during vehicle travel, and uneven settlement. This rotational flexibility helps to disperse the internal forces of the bridge structure, reduce local stress concentration, and ensure the overall stability of the bridge.
4.Good buffering performance:
Rubber materials have good elasticity and damping characteristics, which can effectively absorb and buffer the energy generated by bridges under dynamic loads such as vehicle driving and earthquakes, reduce the impact of vibration and shock on bridge structures, provide good shock absorption effects for bridges, and improve the comfort and safety of driving.
5.Compact structure and low building height:
Compared to other types of bearings, pot type rubber bearings have a more compact structure and occupy less space, which can adapt to the limited space of the lower structure of bridges. At the same time, its relatively low building height can reduce the overall height of the bridge, minimize the impact of bridge construction on the surrounding environment, and also help to reduce the construction cost of the bridge.
6.Convenient processing and manufacturing, saving steel, and reducing costs:
The main components of pot type rubber bearings, such as steel components and rubber blocks, have relatively simple processing techniques and are easy to mass produce. Moreover, while meeting the same load-bearing capacity and performance requirements, compared to other forms of bearings, pot type rubber bearings can save the amount of steel used, thereby reducing project costs and having high economic efficiency.
7.Good durability:
The steel components of the support have undergone anti-corrosion treatment, and the rubber material has good aging resistance. In addition, a reasonable sealing design can effectively prevent harmful substances such as moisture and dust from entering the interior of the support, ensuring the long-term stability of the support, reducing maintenance and replacement frequency, and lowering the total life cycle cost of the bridge.
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