Research on Construction Technology of Adding Underground Garage to Existing Buildings
As parking spaces in existing residential areas become increasingly scarce,the demand for adding underground garages to existing build-ings are becoming more urgent.This article elaborates on two construction techniques for adding underground garage,namely the reverse construc-tion method and the flat-push reverse construction method.A detailed discussion is given on the reverse construction process,including foundation expansion and pile foundation replacement,construction of underground continuous walls,and precautions for earthwork excavation when adding underground garage.At the same time,the prefabricated composite shear wall that can be used for support construction is introduced,its role in under-ground space development is discussed,and the problems that may be encountered in use are proposed,in order to provide technical reference for the development of underground spaces in existing buildings.