Research on monitoring and control of demolition construction of prestressed concrete continuous beam bridge

Authors

BAI Yinghua, School of Civil Engineering, Architecture and Environment, Hubei University of Technology, Wuhan, Hubei 430068, ChinaFollow
TANG Xu, School of Civil Engineering, Architecture and Environment, Hubei University of Technology, Wuhan, Hubei 430068, China

Abstract

The demolition of an old bridge is a complex dynamic process. In order to ensure the safety of the structure in the process of bridge demolition and ensure the smooth and safe demolition of the old bridge, this paper took the demolition construction of a three-span prestressed concrete continuous beam bridge as an example, established the space model of the whole bridge through the finite element simulation modeling software Midas Civil, and calculated the stress and deformation of the structure at each construction stage. At the same time, the stress and linear changes of the main beam at each construction stage were monitored in real time, and the measured data of the two key construction stages when the main beam structure system was transformed were compared with the theoretical data to analyze the stress and linear changes of the structure. The results show that the stress and linear change trend of the main beam structure is basically consistent with the theoretical calculation in the process of bridge demolition and is always within the safe and controllable range.

Publication Date

3-17-2023

DOI

10.14048/j.issn.1671-2579.2023.01.017

First Page

104

Last Page

107

Submission Date

March 2025

Recommended Citation

Yinghua, BAI and Xu, TANG (2023) "Research on monitoring and control of demolition construction of prestressed concrete continuous beam bridge," Journal of China & Foreign Highway: Vol. 43: Iss. 1, Article 17.
DOI: 10.14048/j.issn.1671-2579.2023.01.017
Available at: https://zwgl1980.csust.edu.cn/journal/vol43/iss1/17