The Research On Cable Force Optimization Of Special-shaped Cable-stayed Bridge With Single Tower

Because of the development of the building theory of bridge and architect technology cable stayed bridge with single cable stayed tower became excellent bridge style in urban bridge design,its graceful shape and great expansion indicated urban vigor and energy fully.Although cable stayed bridge with single cable stayed tower make people enjoyable in aesthetic,the issue of inhaul cable’s stretch and draw order of non-symmetrical abnormal Cable-stayed bridge is very complicated.Stay cable tray statically indeterminate structure,the change of structure is subjected by construction,following cable’s stretch and draw will affect stress status of constructed structure.As to cable stayed bridge which has cable,it is important to ensure when to stretch and draw,and then how to choose reasonable stretch-draw plan and cable power become key problems.The article makes Wuhan Jinghe Bridge as research background,through establishing limited space unit model of cable stayed bridge with single cable stayed tower,made analysis to bridge formulation phase of bridge.Bridge formulation phase consider dead load,live load and temperature and its load combination’s effects to the whole bridge.The article will affect combination of matrix method and MATLAB second optimization method,it researched cable force optimization of cable stayed bridge with single cable stayed bridge and reasonable finished bridge status.Optimization methods are objective functions of main beam,tara pressure of steel bridge and bending strain energy,meanwhile considering live load’s effects to main beam and stayed cable bridge force,restrict is within reasonable range,optimize cable force to solve constrained two programming problems.Additionally,due to construction plan design drawing of the bridge just gave finished cable force of stayed cable bridge,and it hasn’t give construction stretch and draw order and primary stretch and draw and other detailed situation,when hence construction unit encounter difficulty of stretch and draw order.In order to solve stayed cable bridge issues of the bridge,the article will research on cable tension order of special-shaped single tower stayed cable bridge.