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A construction method of envelope structure for protecting existing buildings inside foundation pit

A technology for existing buildings and enclosure structures, applied in infrastructure engineering, construction, excavation, etc., to solve problems such as the inability of buildings to be demolished or relocated, and to achieve diverse construction methods, simple design and construction, and construction space. open effect

Active Publication Date: 2022-03-08
BEIJING URBAN CONSTR DESIGN & DEV GRP CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to various conditions, there are buildings in many underground spaces to be built, and these buildings cannot be demolished or relocated

Method used

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  • A construction method of envelope structure for protecting existing buildings inside foundation pit
  • A construction method of envelope structure for protecting existing buildings inside foundation pit
  • A construction method of envelope structure for protecting existing buildings inside foundation pit

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Embodiment Construction

[0053]In order to make the purpose, technical solutions and advantages of the present invention clearer, the invention will be clearly and completely described below in conjunction with specific embodiments. It should be understood that the terms "center", "vertical", "horizontal" and "upper" , "Down", "Front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as limiting the invention.

[0054] An embodiment of the present invention provides a construction method of an enclosure structure for protecting existing buildings inside a found...

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Abstract

The present invention relates to a construction method for protecting an existing building inside a foundation pit, comprising the following steps: step 101, determining the excavation contour line of the foundation pit, and setting a preset support around the perimeter of the protected building Set up several supporting piles on the pile contour line, the contour line of the supporting piles is a regular polygon or a circle with an even number of sides, and the area outside the contour line of the supporting piles and within the contour line of the excavation of the foundation pit is taken as the foundation pit Excavation area; step 102, after the construction of the support pile is completed, the pile head is removed, and the pile top crown beam above the support pile is constructed; step 103, in the excavation area of ​​the foundation pit, excavate downwards to the anchor cable to be constructed in the current layer 800mm to 1000mm below; step 104, constructing the reinforced mesh sprayed concrete surface layer on the outer wall of the support pile, making its shape consistent with the shape of the support pile outline; S105, fixing all the support piles by anchor cables; Step 106, repeat steps 103-105 until the excavation reaches the bottom elevation of the foundation pit, and construct the underground space structure above the bottom elevation of the foundation pit and within the excavation area of ​​the foundation pit.

Description

technical field [0001] The invention relates to the technical field of foundation pit support for underground engineering, in particular to a method for constructing an enclosure structure for protecting existing buildings inside a foundation pit. Background technique [0002] With the development and utilization of urban underground space and the construction of a large number of high-rise buildings, more and more cities have built underground public spaces, causing a large number of foundation pit projects to emerge. Due to various constraints, there are buildings in many underground spaces to be built, and these buildings cannot be demolished or relocated. Therefore, there is an urgent need to provide a construction method for protecting the existing buildings inside the foundation pit, so as to ensure that when the construction method is used to excavate the foundation pit, it can be strictly controlled without affecting the construction of underground works. The deform...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D17/04E02D5/76E02D5/10E02D5/16
CPCE02D17/04E02D5/76E02D5/10E02D5/16
Inventor 王琦路江宋晓业牛斌
Owner BEIJING URBAN CONSTR DESIGN & DEV GRP CO
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