Roller Supports:
Roller supports are free to rotate, and they are restricted movement only one direction. Roller supports are commonly located at one end of long bridges. This support allows bridge structure to expand and contract with temperature changes. This support cannot provide resistance to lateral forces in the direction in which it is released.
Hinge Supports:
The hinge support is capable of resisting forces acting in any direction of the plane. This support does not provide any resistance to rotation.Hinge support reduces sensitivity to earthquake since it does not provide any resistance to rotation.
Fixed Supports:
Fixed support can resist vertical and horizontal forces as well as moment since they restrain both rotation and translation.
Pinned Supports:
A pinned support is same as hinged support. It can resist both vertical and horizontal forces but not a moment. It allows the structural member to rotate, but not to translate in any direction.
