Analysis Of Design Parameters And Construction Control For Single Pylon Cable-stayed Bridge

Single pylon cable-stayed bridge is a kind of bridges with support systems in tensionand deck systems in compression.Since it appeared,due to its beautiful shape,reasonablestructure and economic cost,it has developed rapidly at home and abroad.Based on theconstruction of Guohe Bridge as the background,this paper studies its structureperformance,characteristic parameters,unstressed cable length etc,so as to providetheoretical guidance for monitoring projects.This paper firstly reviews the origin of the cable-stayed bridge with single pylon andits development at home and abroad,summarizes its classification system,analyzes itsmechanical characteristics and structural advantages.At last briefly introduces thedesign and construction of Guohe Bridge.The model of Guohe Bridge is established by Dr. bridge and ANSYS and the staticanalysis is respectively made on the main girder,beam and pylon.According to theanalysis results,the various indices such as stress,internal force,cable force anddisplacement of the whole bridge are evaluated for design and monitoring.There are many design parameters which impact the force performance ofcable-stayed bridge.This paper focuses on the analysis of the length of no-cable zoneand the height of pylon and sums up the reasonable range of those parameters.Finally,this paper presents theories of calculation of unstressed cable length andcompare differences among standard algorithm,practical iterative algorithm and fastalgorithm.Due to the characteristics of the multiple cable tensioning,reasonableblanking length is computed.At the same time,the mid-cable force in construction isstudied and get the.