Construction method for additionally arranging deep underground garage on part of basement

Abstract

The invention discloses a construction method for additionally arranging a deep underground garage on the part of a basement. The construction method comprises the following steps that (1) a land mass with the basement is selected, and a construction area is determined; (2) upper backfill soil in the construction area is excavated; (3) vertical column piles, tension piles and steel plate piles are arranged underground in the set positions in a sinking mode, and a top plate and a bottom plate, damaged by construction of pile bodies, of the basement are repaired; (4) the original top plate and bottom plate, in an enclosure structure, of the basement are reserved, and thus foundation pit excavation is completed; and (5) the bottom plate is poured, parking platforms are constructed, and in the range of the enclosure structure, partial foundation piles, with the pile top elevations being lower than those of the tension piles, of the basement are reserved. The construction method for additionally arranging the deep underground garage on the part of the basement can be used for building the deep underground garage in an area without ground buildings or an area with demountable buildings and the basement, so that the number of underground parking spaces is increased, and the problem of difficult parking is relieved.

Description

technical field

[0001] The invention relates to a construction method of an underground garage, in particular to a method for building a new underground garage in a part of a basement. Background technique

[0002] At present, the number of underground garages in cities in my country is relatively small, especially in large and medium-sized cities with high population density, but there are a large number of shallow basements in urban areas, especially in business districts and some residential areas. Some of these basements become underground shopping malls, and some become underground garages. Most of these basements have only one or two floors. The utilization of underground space is seriously insufficient. Some basements are built in the area between buildings on the ground. It is very difficult to build new underground garages in undeveloped plots. With the gradual increase of car ownership, the parking spaces in these existing above-ground and underground garages are ser...

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