Research On Method Of Geometry Control During Cantilever Erection Of Curved Continuous Bridges

This dissertation mainly discusses the Alignment Control during Cantilever erection of Curved Continuous Bridges. The main contents are as follows:1. The modern bridge control system and method, as well as The control method of curved continuous bridge are introduced;2. The application of tangent-initial-displacement method in solving fabrication geometry is introduced, The relationships between zero-initial-displacement method and tangent-initial-displacement method are discussed;3. The application of zero-initial-displacement method in solving fabrication geometry of curved continuous bridges is studied with the bridge analysis software ASCB;4. Geometry control during fabrication is studied and detailed alignment control method during fabrication process of beam segments is presented;5. Geometry control during assembly is studied and detailed alignment control method during assembly process of beam segments is constructed.The study hereinbefore provides certain reference on geometry control method of the main beam of curved continuous bridges installed by cantilever method.