Construction method of cellar for building completed

Abstract

Disclosed is a construction method of a cellar for a building completed. The construction method includes fixing supporting structures to bottom concrete of the building; installing a press-in machine on the supporting structures; inserting posts for supporting the building into the foundation under the building by inserting hollow piles into the holes to then insert the piles into the underground using the press-in machine, stacking new piles on the inserted piles, and sequentially inserting the piles using the press-in machine; excavating a foundation under the bottom concrete of the building to prepare an underground space when the building is supported by the posts; and placing the concrete on the horizontal and vertical faces of the underground space prepared by the excavating the bottom concrete of the building.

Description

TECHNICAL FIELD[0001]The present invention relates to a construction method of a cellar for a building completed. More particular, the invention relates to a construction method of a cellar for a building completed, by which a cellar can be constructed by excavating the foundation under the building in a state in which the completed building remains intact. More particularly, the present invention relates to a cellar construction method of a building completed, which can simply and safely construct a cellar with low noises and reduced costs in a narrow space by installing a press-in machine in supporting structures fixed on the bottom of the building by allowing concrete to pass through the bottom of the building, safely supporting a plurality of posts formed by inserting hollow piles in a line on the building using the press-in machine, excavating the foundation of the building to selectively form an underground space, and placing concrete on the bottom surface of the underground s...

AI Technical Summary

Benefits of technology

[0009]As described above, in the cellar construction method of the completed building according to the present invention, the cellar can be newly constructed or added to the existing completed building without reconstructing the completed building, thereby reducing construction wastes, ultimately preventing environmental contamination and preventing construction materials from being wasted.

[0010]In addition, in the cellar construction method of the completed building according to the present invention, since a hydraulic cylinder is used as a press-in machine for inserting piles, noises and vibration can be eliminated, thereby providing environmentally friendly working conditions. In addition, since the building is supported by a plurality of posts inserted into the foundation of the building, a complex structure is not necessarily installed to support the building, unlike in the conventional construction method. Thus, the labor hours can be reduced, thereby simply and safely constructing the cellar within a shortened period.

[0011]Further, since an underground space is formed by compressively inserting piles into the bottom surface of the completed building using a press-in machine and eliminating the foundation into which the piles are inserted, the cellar can be simply constructed in a narrow space at low costs.

Problems solved by technology

Since an existing completed building, in particular, a large-scale building, is heavy, in a case where a cellar area is secured by excavating the underground, the cellar area may tend to loosen the foundation soil that supports the building and may suffer from a high risk of collapsing.

Therefore, it has been practically difficult to secure or additionally constructing the cellar.

To solve the problem, in buildings without cellars or with insufficient cellar spaces, in particular, large-scale buildings requiring additional installation of underground parking lots, separate land or buildings should be bought to be used in cellar construction, increasing costs.

However, a complex structure for supporting the building is separately installed under the building, resulting in an increase in the construction cost.

In addition, terms of a construction work may be prolonged due to an increase in the man-hours and construction costs may increase due to labor intensive works.

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