Abstract:

At present, there are two major shock absorption measures for underground structures, i.e., grouting consolidation and shock absorption cushion. Taking a tunnel on Ya’anLuzhou highway as example, the authors study on the shock reducing effect of grouting consolidation and shock absorption cushion under the same earthquake action by means of soilstructure interaction model and timedependent analysis method. The authors also study on the influence of the changing of the grouting consolidation scope on the shock reducing effect. The authors conclude that both these two shockreducing measures are helpful to reduce the shock response of the tunnels.

Key words:  , high earthquake intensity regionhighway tunnelviscous boundaryshock absorption measures