Bridge Engineering Blog & Technical Insights

This question raises the core functional logic of bridge bearings, which can be summarized as "force transmission+adaptation to deformation". Essentially, it is a "buffer coordinator" between the upper and lower structures of the bridge.

In the selection of bridge bearings, the core principle that has been verified in engineering practice is' what is suitable is the best '. Plate type, bowl type, and spherical bearings each have their unique performance and applicable scenarios. It is meaningless to talk about their advantages and disadvantages without specific engineering conditions. The key lies in whether they match the stress characteristics, environmental conditions, and usage needs of the bridge.

Bent cap refers to the horizontal beam set at the top of the bent pile pier to support, distribute, and transmit the load of the upper structure. Also known as hat beam. Install reinforced concrete or low reinforcement concrete beams on bridge piers (abutments) or piles.

The role and requirements of bridge bearings

The support is set between the upper structure of the bridge and the pier, and its function is to:

(1) Transmitting the supporting reaction force of the upper structure, including vertical and horizontal forces caused by dead and live loads;

(2) Ensure that the structure can deform freely under factors such as live load, temperature changes, concrete shrinkage and creep, so that the actual stress situation of the upper and lower structures conforms to the static diagram of the structure.

The role and requirements of bridge bearings

The support is set between the upper structure of the bridge and the pier, and its function is to:

(1) Transmitting the supporting reaction force of the upper structure, including vertical and horizontal forces caused by dead and live loads;

(2) Ensure that the structure can deform freely under factors such as live load, temperature changes, concrete shrinkage and creep, so that the actual stress situation of the upper and lower structures conforms to the static diagram of the structure.