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Casing construction method for reinforcing underground building and structure foundation

A foundation reinforcement and casing technology, which is applied in foundation structure engineering, foundation structure repair, construction, etc., can solve the problems of inability to use precipitation, water stop, subsidence of existing buildings, cracking surrounding environment, etc., to achieve flexible construction, The effect of fast project progress and low construction cost

Active Publication Date: 2011-08-17
SHANGHAI ZHIPING FOUNDATION ENG CO LTD
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] However, the use of pile underpinning reinforcement technology or foundation reinforcement technology in the existing basement renovation, reinforcement, deviation correction and emergency reinforcement projects mainly has the following two problems: ①Due to reasons such as large building area and deep foundation pits, water stop , Precipitation costs are high; ②Due to the decline of groundwater level, existing buildings sink, crack or cause destructive effects on the surrounding environment, it is impossible to use precipitation and water stop for construction

Method used

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  • Casing construction method for reinforcing underground building and structure foundation
  • Casing construction method for reinforcing underground building and structure foundation
  • Casing construction method for reinforcing underground building and structure foundation

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Embodiment Construction

[0019] See attached figure 1 , the present invention comprises: casing is placed, pile foundation construction, recovery casing and water-stop seal pile, concrete construction is carried out by following steps:

[0020] a. Positioning hole

[0021] According to the reinforcement requirements of underground structures, determine the hole position of the lower basement floor 3, determine the hole position of the upper basement floor 2 through the axis through the hole position of the lower basement floor 3, and determine the position of the rotary jetting machine 1, and then use manual drilling. Drill holes in the bottom plates of each layer to the cushion layer 4, the diameter of the holes is determined by the pile foundation 8 reinforced by the foundation, and the horizontal error of the upper and lower holes is less than 10mm;

[0022] b. Casing placement

[0023] Insert the casing 5 from the hole 2 of the upper basement floor through the lower basement floor 3 to the botto...

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Abstract

The invention discloses a casing construction method for reinforcing an underground building and structure foundation. The casing construction method comprises the steps of positioning, opening hole, placing a sleeve, constructing a pile foundation, recovering a casing, stopping water and sealing the pile. The invention can reinforce and construct the foundation without falling rain and stopping water. Compared with the prior art, the invention has convenient and flexible construction, not only keeps water and soil balance, but also effectively prevents underground high water level from upwards spraying and overflowing and greatly reduces damage to a base plate of an underground base plate; in addition, the invention has the advantages of lower construction cost, high project speed and high work efficiency and is especially suitable for reforming, reinforcing and correcting the existing basement and rescuing and reforming old buildings.

Description

technical field [0001] The invention relates to the technical field of building foundation reinforcement, in particular to a casing construction method for foundation reinforcement of underground buildings and structures. Background technique [0002] With the development of my country's economic construction and the demand for opening to the outside world, some newly built buildings have to be located on unfavorable sites. In addition, due to the change of use or the increase of functions, the renovation of old houses and the increasing number of floors are increasing. Reinforcement of the foundation of the building is required. According to survey statistics, among the construction engineering accidents in various countries in the world, foundation failure accounts for the majority. Therefore, it is very necessary and necessary to strengthen the foundation in the quality accident of buildings. [0003] At present, there are the following technical measures for foundation r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D37/00E02D5/38
Inventor 陈富海凌振健
Owner SHANGHAI ZHIPING FOUNDATION ENG CO LTD
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