A protection building ultra-deep foundation beam underpinning node device and its application method

Abstract

The invention discloses a construction protection ultra-deep foundation beam underpinning joint device and a usage method thereof. Both sides of the foundation of each retaining brick pillar are provided with wall clamping beams, wall penetrating beams are arranged under the wall clamp beams, and the wall penetrating beams and the wall clamping beams are partially in lap joint. The usage method comprises step I, punching a wall body corresponding to the position of a first wall penetrating beam, and reserving reinforcing steel bars connected with the a second wall penetrating beam on both sides of the first wall penetrating beam; step II, performing steel bar and formwork construction on the wall clamping beams; step III, performing I-steel and steel bar wall penetrating on the second wall penetrating beam at the bottom of the wall clamping beams, and welding the I-steel and the longitudinal bars and the hooping bars of the steel bars; step IV, performing steel bar and formwork construction on a ground ring beam, and welding the connecting joints of the second wall penetrating beam and the ground ring beam. The construction protection ultra-deep foundation beam underpinning joint device and the usage method thereof can reduce the risk during practical application of ultra-deep foundation beam sectional construction and avoid adverse effects of over-deep and large-scope single excavation on old buildings.

Description

technical field [0001] The invention relates to a protection device in the field of construction, in particular to a device for underpinning nodes of an ultra-deep foundation beam for protection of a building and a method for using the same. Background technique [0002] With the rapid development of urban buildings, especially in the downtown area, more and more old buildings with a long history can no longer meet the living conditions and use requirements of modern people, and the overall performance of these old buildings has gradually decreased over time. Therefore, there are more and more requirements for the reinforcement, overhaul and transformation of these buildings. The foundation beam underpinning structure is a conventional form of building reinforcement, and the reinforcement form of the foundation beam underpinning structure is more and more widely used in the protection of buildings. While the new foundation beam underpinning joints are widely used, the tradit...

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Problems solved by technology

[0004] The purpose of the present invention is to provide an underpinning node device for ultra-deep foundation beams of protective buildings and its use method, so as to solve the problems that the existing treatment methods easily cause unfavorable settlement of old buildings, resulting in huge construction difficulty and construction risks, etc.

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