Settlement analysis of the giant open caisson during the construction of the Changtai Yangtze River Bridge
| Author(s): |
Mingwei Guo
(State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, China)
Xuechao Dong (University of Chinese Academy of Sciences, Beijing, China) Zhi Yang (School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan, China) |
|---|---|
| Medium: | journal article |
| Language(s): | English |
| Published in: | Frontiers in Earth Science, January 2023, v. 10 |
| DOI: | 10.3389/feart.2022.1056695 |
| Abstract: | With the increasing size of open caissons in large-span bridge projects, the overall settlement of giant open caissons is vital to the safe construction of bridge superstructures. Taking the engineering case of the Changtai Yangtze River Bridge, the overall deformation of an open caisson was studied during the construction stage of the bridge’s superstructures. First, the theoretical layer-wise summation method was utilized to analyze the settlement of the open caisson. Then, a 3-D finite element model was established to simulate the installation stage of the bridge superstructure. Finally, a large centrifuge model test was performed to obtain the deformation of the open caisson at each step of bridge’s construction. The results of these approaches demonstrated that final settlements were quite consistent—approximately 225 mm when the bridge superstructure was completely installed—and the settlement deformation curve could be divided into three stages: slowly increasing, rapid, and stabilizing. This study can provide significant guidance for the construction of the Changtai Yangtze River Bridge and be a reference for similar open caisson engineering projects. |
| Copyright: | © 2023 Guo, Dong and Yang. |
| License: | This creative work has been published under the Creative Commons Attribution 4.0 International (CC-BY 4.0) license which allows copying, and redistribution as well as adaptation of the original work provided appropriate credit is given to the original author and the conditions of the license are met. |
Structures and Projects
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data sheet - Reference-ID
10739950 - Published on:
02/09/2023 - Last updated on:
14/09/2023
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