TAILIEUCHUNG - Cable Force Adjustment and Construction Control

Cable Force Adjustment and Construction Control Introduction Determination of Designed Cable Forces Simply Supported Beam Method • Method of Continuous Beam on Rigid Supports • Optimization Method • Example 58 Adjustment of the Cable Forces General • Influence Matrix of the Cable Forces • Linear Programming Method • Order of Cable Adjustment Simulation of Construction Process General • Forward Assemblage Analysis • Backward Disassemblage Analysis Danjian Han South China University of Technology Construction Control Objectives and Control Means • Construction Control System Quansheng Yan South China University of Technology An Engineering Example Construction Process • Construction Simulation • Construction Control System. | Han . Yan Q. Cable Force Adjustment and Construction Control. Bridge Engineering Handbook. Ed. Wai-Fah Chen and Lian Duan Boca Raton CRC Press 2000 58 Cable Force Adjustment and Construction Control Introduction Determination of Designed Cable Forces Simply Supported Beam Method Method of Continuous Beam on Rigid Supports Optimization Method Example Adjustment of the Cable Forces General Influence Matrix of the Cable Forces Linear Programming Method Order of Cable Adjustment Simulation of Construction Process General Forward Assemblage Analysis Backward Disassemblage Analysis Danjian Han South China University of Technology Construction Control Objectives and Control Means Construction Control System Quansheng Yan South China University of Technology An Engineering Example Construction Process Construction Simulation Construction Control System Introduction Due to their aesthetic appeal and economic advantages many cable-stayed bridges have been built over the world in the last half century. With the advent of high-strength materials for use in the cables and the development of digital computers for the structural analysis and the cantilever construction method great progress has been made in cable-stayed bridges 1 2 . The Yangpu Bridge in China with a main span of 602 m completed in 1993 is the longest cable-stayed bridge with a composite deck. The Normandy Bridge in France completed in 1994 with main span of 856 m is now the second-longest-span cable-stayed bridge. The Tatara Bridge in Japan with a main span of 890 m was opened to traffic in 1999. More cable-stayed bridges with larger spans are now in the planning. Cable-stayed bridges are featured for their ability to have their behavior adjusted by cable stay forces 3-5 . Through the adjustment of the cable forces the internal force distribution can be optimized to a state where the girder and the towers are compressed with little bending. Thus the performance of material .

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