Open AccessFoundation settlement prediction of immersed tunnel based on monitoring data
Author(s) -
Bin Li,
Zhijun Chen,
Zhao Liu
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/780/7/072028
Subject(s) - immersed tube , foundation (evidence) , settlement (finance) , geotechnical engineering , saddle , tube (container) , trough (economics) , structural engineering , geology , engineering , materials science , mechanical engineering , geography , archaeology , computer science , world wide web , economics , payment , macroeconomics
Based on the actual project, through the simulation of the construction steps and the inversion analysis of the monitoring data, the settlement of immersed tube tunnel is predicted. Through analysis, it is found that the whole foundation soil layer of immersed tube tunnel appears rebound, the maximum rebound is 0.045m, and the maximum rebound appears on the surface of the foundation trough. As the depth of the soil deepens, the rebound decreases gradually. After the construction is completed, the vertical strain curves of the immersed tube model are all distributed in a saddle shape. After the immersed tube strain is stable, the strain variables of the immersed tube increase with time basically unchanged. 1000 days after the completion of backfilling, the maximum post-construction settlement is 0.0035m.