Dynamic Soil-tunnel Interaction In Layered Elastic Half-space

In densely populated city, the use of underground space is a good plan toalleviate traffic pressure. The judgment of the force between site and the tunnel haveimportant significance to the actual engineering construction.Based on the theory of Wolf, this paper uses the indirect boundary elementmethod and analyzes the dynamic response of rigid lining tunnel respectively in thefrequency domain and time domain. In frequency domain, it solves displacementresponse of different soil layer thickness, different shear wave velocity ratio, anddifferent lining quality, different wave incident angle. In time domain it solves thedisplacement response of free field, the tunnel and each point of surface and the forcebetween the tunnel and field.The research shows that: there is dynamic interaction between soil and tunnel,and meanwhile this interaction is affected by soil layer thickness, shear wave velocityratio, and lining quality, wave incident angle. The influence degree of one certainfactor is influenced by other factors.