Abstract
Based on a large span continuous rigid frame bridge in Chongqing of China, the main pier vertical displacement and deviation, the bridge deck alignment and the expansion joint deformation are analytically researched during operation. Firstly, the monitoring content and method of the large span continuous rigid frame bridge are clearly stated. Secondly, by finite element software Midas Civil, the relevant deformation values of the bridge are calculated. Thirdly, in practice, the relevant deformation values of the bridge are measured. Finally, the measured values in practice are compared with the calculated ones by the finite element software Midas Civil, finding that the former is less than the latter, and it can be concluded that the bridge is basically in the normal working condition. In this paper, the analytical research on the deformation monitoring can provide the basis for similar bridges, which has good practical significance.
Highlights
In recent years, with the rapid economy development, the span of Chinese bridges is increasing
Based on a long-span continuous rigid frame bridge, this paper has determined the content and method of deformation monitoring according to the relevant specification [18]-[25]
The deformation monitoring analysis of the long-span continuous rigid frame bridge can provide a certain basis for similar bridges, which has good practical significance
Summary
With the rapid economy development, the span of Chinese bridges is increasing Among these bridges, the continuous rigid frame bridge is one main form of long span bridges. The calculation model of the bridge was established, analyzing the influence of the different specifications, load age, concrete shrinkage and creep in relative humidity environment, and loss of prestress on the deformation. It summarized deformation law and the influencing factors of deformation, but safety assessment was not done for deformation. Based on a long-span continuous rigid frame bridge, this paper has determined the content and method of deformation monitoring according to the relevant specification [18]-[25]. The deformation monitoring analysis of the long-span continuous rigid frame bridge can provide a certain basis for similar bridges, which has good practical significance
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