Numerical Analysis Of Construction Process And Model Test Design For An Asymmetric Single-tower Self-anchored Suspension Bridge

In the past twenty years, large span and complicated bridges had been rapidlydevelopment in China. Self-anchored suspension bridge as a representative of thesecomplex bridges, with its beautiful shape and reasonable stress, repeatedly won in thescheme selections. But the system transformation of these complex bridges was a verycomplex nonlinear process, which was the main problem though the design andconstruction phase. Model test and finite element simulation were two useful ways ofstudy the process of system transformation and the stress performance of the structure.Combining with the practical project, this paper studied and discussed the mechanicalproperties of the asymmetric single-tower self-anchored suspension bridge in bridgecompletion state and construction phase, and also designed a scale model test of thisbridge. The main research contents were as follows:1. Introduced the development status of self-anchored suspension bridge and hada brief introduction on two main research methods of the construction process whichwere finite element simulation analysis method and model test method.2. Considered dead load, vehicle load, temperature load and foundationsettlement and other factors, using finite element software analyzed the staticmechanical properties of an asymmetric single-tower self-anchored suspension bridge.3. Briefly introduced the construction method of self-anchored suspension bridge,and took a self-anchored suspension bridge as a project background, established thefinite element model and simulated the construction process under four differentsuspender tensioning schemes, through comparative analysis, obtained the mostreasonable construction sequence of the four sequences.4. According to the similarity theory and the laboratory conditions, a geometricscale of1/20model bridge of an asymmetric single-tower self-anchored suspensionbridge was designed. Combined with numerical analysis results of the model bridge,evaluated the effective of the design of the model bridge.The work and results of this paper could provide reference for design of themodel test of self-anchored suspension bridge and its construction process.