Study On Structure System Transformation Of Self-anchored Suspension Bridge With Spatial Cables

Currently,the spatial cable suspension bridge is very popular with engineers because of its advantages such as terrain,no large volume of anchor,good stability and so on!The conversion of the self anchored suspension bridge is one of the key tasks in construction.At present the domestic bridges is sling tensioning method,however,it is not the same as the direction of tension,tension method and simulation method.Furthermore the construction of suspension bridge is complex and the influencing factors are many.The completion of the spatial cable suspension bridges is not much,so it is necessary to study on it.Based on the Tianhe Bridge South Bridge with single tower and double spans,The core of the pap is stress-free status method.The sling tension scheme is detailedly analyzed in the angle of the construction safety and control and compared and selected.This paper discusses the improvement and regularities of the grading tension method and alternating forward tension method.Then we discuss the influences of the adjacent hangers,and the strong coherence and weak coherence of main cable in the tensioning process for similar reference.Based on the Tianhe Bridge North Bridge with twin towers three spans,the temperature simulation method for multi cooling after heating is put forward,and we design tension scheme as well as tushing scheme,The effect of analysis is well.