Research on structural stress test of Guidan Highway super large bridge

摘要

Guidan Highway super large bridge of Guangzhu railway engineering is a three-span(60+100+60m) continuous box girder bridge, which was constructed by using hanging basket cantilever method. On the basis of the analytic theory of 3D finite element forward/reverse, the stress monitoring of the whole bridge was done through the comparative analysis of the control section measured stress value with the theoretical value. The result of monitoring shows that the measured stress value and changing trends was close to the theoretical analysis results and the bridge can be closed smoothly and the stress variation was in smooth controllable safety range.