INFLUENCE LINE CONSTRUCTION OF CONTINUOUS CURVED BEAM BRIDGE USING SINGULAR-CURVED-BEAM-METHOD

The singular-curved-beam-method based on the pure torsion theory is used to analyze the ordinary continuous curved beam with torsion constraint. The beam is prismatic and simply supported. The basic idea is as follows: the redundant bending moment is assumed at a virtual hinge at the middle support and calculated using compatibility condition of deformation. Then the calculation may be conducted at each individual span system. The internal force influence line under the action of unit vertical load P=1 or unit torsion moment m_z=1 is obtained. The analysis process is examplified, which is applicable to both computer and h and calculation.