Finger Joint

Design Principle

For bridges with large spans and significant rotational movements, such as cable-stayed or suspension bridges, specialized finger joint designs are available. These designs often incorporate spherical bearings to accommodate multi-directional movement and rotation, which is named as Multi-directional and multi-rotational finger joint, the DXB series innovated by IEC. DXB joints combine the merits of conventional finger joints and high-rotational spherical bearings. Testing shows that the maximal horizontal and vertical rotation movement can reach more than 0.05/rad.