Analysis Method for Hoisting Construction Process of Suspension Bridge With Spatial Cables

Abstract:

Based on the fabrication length of main cable and hangers and the installation location of cable clamps, the lower end force matrix of hanger was established, and independent equilibrium equations of temporary system were established for each construction stage. Multisegment twoforce bars considering gravity and multistage spatial catenary were respectively employed to simulate bidirectional sag characteristics of spatial cables, and two analytical methods were proposed for construction processes during hoisting girder. The proposed methods can separately solve the physical effect of any construction stages, without depending on the effect of any previous stages. The example shows that the proposed methods can rapidly respond to the realtime changes of construction state, and are very suitable for the realtime monitoring of construction process and technical decision analysis.