Effect of controlling confined water on surrounding environment ofShanghai Cultural Plaza

For the project of Shanghai Cultural Plaza, according to the parameters gained from in-situ tests, a 3-D fluid-solid coupling model for groundwater seepage is established based on 3-D finite difference method. First, the calculated displacement is compared with the measured one during the period of construction. Secondly, the surface subsidence caused by dewatering is simulated and compared with the measured one based on the two-step estimate method. The results of engineering example show that the 3-D fluid-solid coupling model can simulate the deformation rules and environmental effect quite well. The calculated displacement caused by dewatering is consistent with the calculated one by the two-step estimate method. It may provide a new research idea for the relevant researches on confined water.