Design and practice of safety and environmental control for super large area foundation pit group project in soft soil areas
Controlling the safety of engineering and environmental impacts of super large area foundation pit group project in soft soil areas is a significant challenge in urban construction.Taking the West Coast Media Port and Shanghai Dream Center project,which is one of the largest and most complex foundation pit group projects in Shanghai,as a background,the support design of foundation pit jumps out of the traditional framework of component design,and controls the foundation pit group project as a whole in terms of overall and details.The foundation pit subdivision and implementation process were rationalize based on comprehensively considering the needs of the development progress of different parcels of land and sensitive environmental protection under the superimposed effect of multiple parcels,etc.The support system design of foundation pit group under complex multi-constraint conditions and a complete set of deformation control techniques for sensitive environment with the operation of subway as the object of protection were proposed,as well as safe and economic countermeasures to control pressurized water in the foundation pit group.The aforementioned measures have resolved various technical issues in the super large area foundation pit group project in soft soil areas,ensuring the safety of the surrounding environment during foundation pit construction while considering the needs of the construction period.
soft soilsuper large area foundation pitfoundation pit group projectfoundation pit subdivisionbuffer widthpumping testconfined water controlsensitive environment
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