Abstract

Info

Title:: Analysis of Process Control State About Concrete Selfanchored Suspension Bridge

Author(s):: REN Wei; GAI Yi-ting; WANG Jin; Key Laboratory of Bridge Detection & Reinforcement Technology of Ministry of Communications, Changan University

Keywords:: bridge engineering; concrete selfanchored suspension bridge; main tower; cable force; process control

Abstract:: Aimed at the problems of analysis for concrete selfanchored suspension bridge, a main span 156 m fivespan prestressed concrete double tower and double cable plane selfanchored suspension bridge was taken as the example bridge. According to the bridge construction process, control and analysis methods were discussed, such as stiffening beam, catwalk, main cable shape, unloaded cable shape, suspender tensioning, saddle preoffset, etc. Using the numerical analysis method, the unit selection, boundary conditions setting, load selection and condition simulation were proposed. Process control of the bridge was completed applying the above methods and good control effect was got, such as final cable elevation deviation was 3.9 cm, relative error of suspender cable force was less than 4%, main tower deviation was 2.1 cm and main girder elevation error was 6.6 cm. The study results show that the proposed analysis method takes into account the problems comprehensively, has good control effect.