Abstract：
Due to sharp increases in underground water level and precipitation condition does not conform to the requirements, etc, basements without considering uplift may be floated and cracked during the construction process or to be used before completion of the project. Analyse and dealing with the float of the basement is worthy of being studied and discussed by engineers. In this paper，the floated reason of the basement and the failure mechanism of the structure were analyzed，the completed permanent anti?鄄buoyant treatment and the structure reinforcement of the basement were carried out，which achieved good economic and social benefits?郾
