Numerical Study For Decreasing The Influence Of Environment Caused By The Construction Of Founding Pit

During the foundation pit construction process, most concern is not only the security and stability of the foundation pit cutting and the influence of the building around or the environment during the foundation pit construction process. In particular the latter has become an important indicator when designing the foundation pit .There are four main methods to reduce the influence of the building around or the environment during the foundation pit construction process:(l) changing the depth of seal measures as underground continuous wall; (2) adjusting down the buried depth of the well tube ; (3) densifying the soil outside the foundation pit; (4)recharging outside the foundation pit. these four ways have a theory each, but the actual effects and engineering cost are very different. With the element software plaxis the four methods are simulated, and the results are compared from which the best way is received.Take an general building construction of yuanyang dasha erqi for example, the best solution is analyzed in engineering applications. and compared the result with that of which does not take any method. Through adjusting a series of parameters to receive the trend of reducing the influence of the building around or the environment.Calculations show that through the measures of reducing the influence of the building around or the environment,the drawdowns outside the foundation pit all decrease,which demonstrates the measures are all feasible.In the four methods,recharging has the best effect and the great value to the foundation excavation.