Abstract
Taking the project of Hefei city plaza tunnel as an example, this paper takes the large-scale finite element calculation software of ABAQUS to set three dimensional calculations models to simulate the construction of underground tunnel, analyzing the displacement and stress dynamic response during the construction process. And the paper also carries out the comparison analysis of the field measurement of the land subsidence. The result indicates that the simulation objectively reflected the rules of subsidence during the construction process. This provides theory evidence for shallow-buried tunnel construction safely and rapidly.
Highlights
With the rapid development of city construction, aboveground space is facing more and more pressure
In spite of the degree of the buried depth, the excavation construction will inevitably weak the underground rock and soil mass which will result in the change that the origin broken equilibrium state would turn into new equilibrium state [4, 5]
According to the reality of the Hefei city Plaza tunnel, this paper utilizes the large scale finite element ABAQUS to carry on the analysis of settlement deformation caused by shallow-buried tunnel construction under complex situations, in order to obtain experiences on design and operation for similar underground engineering
Summary
With the rapid development of city construction, aboveground space is facing more and more pressure. Underground space would be exploited and utilized vigorously [1,2,3]. Since the underground construction will be done within the rock and soil mass. In spite of the degree of the buried depth, the excavation construction will inevitably weak the underground rock and soil mass which will result in the change that the origin broken equilibrium state would turn into new equilibrium state [4, 5]. According to the reality of the Hefei city Plaza tunnel, this paper utilizes the large scale finite element ABAQUS to carry on the analysis of settlement deformation caused by shallow-buried tunnel construction under complex situations, in order to obtain experiences on design and operation for similar underground engineering
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