The Study Of Cable Force Optimization And Arch Stability In The Erection Of Arch Ribs

There are still many questions needing researching in theory, designing, construction and operating as augmenting of the arched bridge.The main bridge of Tianchi Bridge is currently the longest span bridge of its kind in China, whose main arch rings were constructed by the precasting, lifting and erection methods and the single arch rib common 17 entries installation node . In this paper, the construction design of the cable lifting and erection for the bridge aided by stay cable suspension system is presented. It is provided with important role tedious theory of sums engineering clinical significance.To lifting construction projects using epoxy processing the joint of arches section,hoisting technic processes needs time. In virtue of tedious dimensional error of arch segments prefabrication and arch segments tedious mounting error forward,arch segment mark height is uncertainty. So pillar hoisting elevation adjustment arch segments is dynamical procedure. This paper gives out principle and method of dynamic adjusting level and compile program. Hoisting by computer assistant calculation can solve probrem of oversee requirements measured results fast bulletin effectively.It makes damage detection to bending rigid of arch segment joint using neureal network. Method which bases heigh survey results of arch rib under construction. It adopts kinds of different modeling mode and analysis flexural stiffness and cable tension of the joint. It discusses the connection of cable force and rib inner force of lifting construction processes, and discusses geometrical and nonlinear solving method.Cable force optimization can confirm apiece arches section hoisting technic tense insculptate the initial cable force also merely require primary the initial tensioning. Avoiding or decreasing adjustment linear whereas arousing of construction. Based on ANSYS of APDL linguistic parameter programming simulation, the whole process of arch rib construction whole process adopts single-step method to solve original design of cable force original design and acquire the initial firstly; and adopts Sub-Problem proceed to optimize; then optimizes with First-Order based on optimal solution; eventually adopts sweep method sweeping out optimum solution of cable-stayed beginning force.Ensuring arh rib stability is necessary condition under construction process .This text study medium of stability of main influencing factors at hoisting construction process , from arch segment joint bending rigidity, calculate stability coefficient at arch segment hoisting arching process in allusion to three species arch segment joint model, and analyze stabilization factors that different from joint models.