Basement additionally built in existing plant and construction method of basement

Abstract

The invention discloses a basement additionally built in an existing plant. A static pressure pile is struck into the ground of an underground excavation space in the existing plant, a raft plate anda bearing table are anchored at the upper end of a pile foundation of the static pressure pile or the slightly low appropriate position of the pile foundation, an anti-seepage water-stop steel plate is welded to the middle of the additional bearing table, and mortar is poured; additional basement columns are connected and supported to the positions between the additional bearing table and the bottom faces of original columns of the plant; and longitudinal and transverse reinforced concrete beams and the reinforced concrete ground are arranged on the original first-layer ground. A constructionprocess has the key characteristics that multi-time transformation for supporting force of the original columns is just like making mobile warfare, contradictions are transferred, and column and pileconversion is completed in the transformation process; the construction process specifically comprises the steps: adding of a support and the static pressure pile, switching of the supporting force from inside to outside, basement excavation and original bearing table emptying, original bearing table dismantling, adding of the basement columns, switching of the supporting force from outside to inside, and static pressure pile cutting off; and the construction process is particularly suitable for the basement additionally built in the existing plant.

Description

technical field [0001] The invention belongs to the technical field of construction engineering, and in particular relates to an underground structure transformation of an existing factory building and a method for the transformation. Background technique [0002] The existing urban construction is expanding day by day, and many factories have turned into downtown areas. Considering the needs of cultural inheritance, some factories still need to be preserved as industrial heritage and redeveloped for commercial use. Starting from the overall layout of the business, a large amount of underground space is often required in the factory building for parking, storage or development into other functional spaces, such as catering, business, etc. Therefore, there is an urgent need to research and develop a whole set of technologies for adding basement to the lower part of the existing factory building. [0003] Since the factory building structure is generally characterized by poor...

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the difficulties encountered in the prior art of adding basements to existing factory buildings and the deficiencies in the construction scheme, and to propose a structure with good reliability, low cost, safe construction process, and waterproof after completion. The project of adding basement to the existing factory building with excellent performance.

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