Method suitable for underground storey addition of brick-concrete structure building and building

Abstract

The invention relates to a method suitable for underground storey addition of a brick-concrete structure building and a building, belonging to the technical field related to constructional engineering. The method mainly comprises the following steps: (A) excavating the part above the strip foundations of the brick-concrete structure building and the earthwork of a planned underground garage area until the foundation of the building is totally exposed; (B) constructing multiple concrete underpinned piles between the strip foundations and on the outer side of the strip foundations; (C) fixedly connecting the pile top of each concrete underpinned pile with a horizontal underpinned beam, wherein the horizontal underpinned beam penetrates through the building wall; (D) arranging concrete jacketed wall beams on the two sides of the building wall, and fixedly connecting the concrete jacketed wall beams with the building wall; (E) removing original strip foundations of the building; (G) excavating the foundation soil below the building till reaching the floor elevation of the planned basement and garage; (H) constructing the floor, the floor slab of each storey and the roof from bottom to top; (I) pouring a new concrete outer wall around the garage and building a partition wall below the building; and (J) backfilling the earthwork till reaching the natural ground.

Description

technical field [0001] The invention relates to the relevant technical field of construction engineering, in particular to a method and building suitable for underground building of brick-concrete structure. Background technique [0002] Orderly, reasonable, comprehensive and efficient development and utilization of underground space resources of existing buildings has become one of the most effective ways to expand infrastructure capacity, improve urban comprehensive disaster prevention capabilities, improve land use efficiency and save land resources. According to the requirements of urban planning, most new buildings have considered the development and utilization of underground space. [0003] However, a large number of existing buildings have not designed underground parking lots and basements due to the lack of forward-looking due to historical reasons. With the increase in the number of cars and the increase in user demand, it is difficult to park and store goods. ...

AI Technical Summary

Problems solved by technology

Although the vertical load transfer path is simple, most construction machines are difficult to construct concrete underpinning piles close to the upper vertical components due to size restrictions

[0005] In addition, if the concrete underpinning piles on both sides or around them are not used as temporary supports but as vertical load-bearing members of the proposed basement, it will take up a large plane space, resulting in a waste of underground space

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