Underpinning supporting system for storey-adding transformation of existing building basement and construction method of underpinning supporting system

Abstract

The invention relates to an underpinning supporting system for storey-adding transformation of an existing building basement. The underpinning supporting system is characterized by comprising a reinforced original building structure, original building foundations, underpinning structures, bearing platforms, lateral supporting components, peripheral water stop structures used for excavating a newly-added basement and supporting structures, wherein each underpinning structure comprises a static pressure underpinning pile, a static pressure underpinning pile matched jack positioned at the top ofthe static pressure underpinning pile, a drilled steel pipe pile and a drilled steel pipe pile matched jack positioned at the top of the drilled steel pipe pile; the static pressure underpinning pileand the static pressure underpinning pile matched jack positioned at the top of the static pressure underpinning pile are connected with the reinforced original building structure, and are used for the primary underpinning of the original building structure; the drilled steel pipe pile and the drilled steel pipe pile matched jack positioned at the top of the drilled steel pipe pile are connected with a downward extending part of the original building structure through the bearing platforms and are used for the secondary underpinning of the original building structure; and the lateral supporting components are positioned between the drilled steel pipe piles or between the drilled steel pipe piles and the peripheral structures, and are used for guaranteeing the lateral stability of the drilled steel pipe piles.

Description

technical field [0001] The invention relates to a construction method, more specifically, to an underpinning support system used for the layer-adding reconstruction of the basement of an existing building and a construction method thereof. Background technique [0002] With the acceleration of urbanization, land resources are becoming more and more tense, and the supply of above-ground space is in short supply, and some areas have no land available. The development and utilization of underground space provides possibilities for relieving urban land shortage, improving urban environment and traffic conditions, energy conservation and environmental protection, etc. [0003] Under some completed buildings, due to changes in demand and incomplete considerations during the planning period, it is often necessary to add or renovate the basement, or to strengthen the foundation structure in a small space. The use of underpinning pile technology can replace the original building fou...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides an underpinning support system and its construction method for the basement of existing buildings, which can solve the problems of insufficient clearance under the building and the inaccessibility of construction machinery; Ensure the normal use of the superstructure during the construction of underpinning and adding floors

Images