The testing results about the use of new rail joint was introduced, which include the dynamic flexurestress of upper limb and lower margin of joint bar, shearing stress of horizontally neutral axis.
The deformation not only reflects the flexure behavior of slab at every loading stage, but also affects the stress status on the surface of punching shear cone and the ultimate capacity of the slab.
The maximum moment and maximum deflection of flexure hinge could be applied are analyzed, and their calculating equations are given while stress concentration is neglected.