First of all, there are some differences:
1. Generally speaking, pier: pier above the foundation,
2. Pile: the foundation of pier or bridge column.
Second, the use is different:
1, pier, column or wall force transmission member,
2. Piles, lower foundation members,
When the two are combined, the combination part is the boundary, and the boundary is above the pile cap or at the bottom of the pier.
If there is a cap or tie beam, there is a pile foundation under the cap or tie beam and a pier on the cap or tie beam; No cap or tie beam: pile foundation below ground level, pier column above ground level. The pier consists of three parts, the lower part is the pile foundation, the upper part of the pile foundation is the cap, and the upper part of the cap is the pier body. The dividing line between pier and pile foundation is pile cap.
Extended data:
The abutment is located on the bridge. The pier is between two abutments. The role of piers is to support the bridge-span structure, and abutment bearings not only support the bridge-span structure, but also connect with the embankment to prevent the embankment from sliding. In order to protect the platform and embankment fill, some protection and diversion works are often done on both sides of the platform.
The middle supporting structure of multi-span bridge is called pier. Pier is divided into solid pier, column pier and bent pier. According to the plane shape, it can be divided into rectangular pier, pointed pier and circular pier. The materials of building piers can be wood, stone, concrete, reinforced concrete, steel and so on.
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