APPLIANCE OF INVERSION THEORY IN ALIGNMENT CONTROL OF PLANE CURVED BRIDGE BY CANTILEVER SEGMENTAL CONSTRUCTION

The inversion theory is applied to plane curved bridge’s alignment control and calculation of segmental construction. According to actual monitoring displacement results of existed T-shaped cantilever structures, an optimized approach of accurate value is achieved in displacement reverse analysis method so that the calculation accuracy of alignment control of every girder segment in entire construction can be guaranteed. This method is used in the construction monitoring and supervising for Yuanyichang circular curved rigid frame bridge on Ping’an-Adai highway, to make closure accuracy and bridge alignment reach to desired effect.