Abstract
Taking the six-hole overlapped tunnel area of Tianjin Metro Lines Z1, 5, and 6 as the research object, the universal finite element software ABAQUS is used to establish a three-dimensional dynamic finite element model of the overlapped tunnel area, and the vibration load of the subway train is applied. The environmental vibration response law of the overlapped tunnel area under different load combinations and different orders of tunnel construction conditions is analyzed, and some suggestions for the assessment and control of the environmental vibration of the overlapped tunnel area are put forward. The research results can provide a reference for subway line planning, design, construction, and operation management in the complex spatial tunnel area with multiple overlapped lines under similar conditions.
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