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Construction method for narrow outer enclosure space of deep foundation

A construction method and deep foundation technology, applied in infrastructure engineering, excavation, artificial islands, etc., can solve the problems of occupying basement area, small reserved space, insufficient construction space, etc., to increase the usable area and reserve space. Reduce and reduce the effect of earthwork excavation and transportation

Active Publication Date: 2021-06-15
司顺生
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide a construction method for the narrow outer protection space of the deep foundation, which can effectively solve the problem that the reserved space between the slope of the deep foundation pit and the wall of the basement is too narrow and there is not enough space. Construction space, construction defects that reserve sufficient space and occupy the basement area

Method used

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  • Construction method for narrow outer enclosure space of deep foundation
  • Construction method for narrow outer enclosure space of deep foundation
  • Construction method for narrow outer enclosure space of deep foundation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The construction method of deep foundation narrow outer enclosure space includes the following steps:

[0032] S1. Drive concrete slope protection piles 7, excavate the foundation pit and use the soil nail wall process to protect the slope, pour the concrete foundation cushion, and do the cushion waterproof treatment;

[0033] S2. Set up the keel frame, prefabricated cement formwork, the keel frame is square, and is composed of vertical keel 1, sky keel 2 and ground keel 3, the sky keel 2 and ground keel 3 are riveted to the upper and lower ends of vertical keel 1 respectively, pre-installed The good keel frame is placed upright on the concrete cushion at the bottom of the foundation pit and fixed with the concrete cushion by anchors. A distance of 250 mm is reserved between the keel frame and the side slope of the foundation pit. The vertical keel 1 passes through the reinforced keel 4 and the concrete slope protection pile 7 connection, install the additional keel 8 a...

Embodiment 2

[0040] The construction method for the narrow outer enclosure space of the foundation includes the following steps:

[0041] S1. Drive concrete slope protection piles 7, excavate the foundation pit and use the soil nail wall process to protect the slope, pour the concrete foundation cushion, and do the cushion waterproof treatment;

[0042]S2. Set the keel frame, prefabricated galvanized mesh formwork, the keel frame is square, and is composed of vertical keel 1, sky keel 2 and ground keel 3, and sky keel 2 and ground keel 3 are riveted to the upper and lower ends of vertical keel 1 respectively, The pre-installed keel frame is placed upright on the concrete cushion at the bottom of the foundation pit and fixed with the concrete cushion by anchors. A distance of 300 mm is reserved between the keel frame and the slope of the foundation pit. The vertical keel 1 is connected to the concrete through the reinforced keel 4. The slope protection pile 7 is connected, and the additiona...

Embodiment 3

[0048] The construction method for the narrow outer enclosure space of the foundation includes the following steps:

[0049] S1. Drive concrete slope protection piles 7, excavate the foundation pit and use the soil nail wall process to protect the slope, pour the concrete foundation cushion, and do the cushion waterproof treatment;

[0050] S2. Set up the keel frame, prefabricated cement formwork, the keel frame is square, and is composed of vertical keel 1, sky keel 2 and ground keel 3, the sky keel 2 and ground keel 3 are riveted to the upper and lower ends of vertical keel 1 respectively, pre-installed The good keel frame is placed upright on the concrete cushion at the bottom of the foundation pit and fixed with the concrete cushion by anchors. A distance of 350 mm is reserved between the keel frame and the side slope of the foundation pit. The vertical keel 1 passes through the reinforced keel 4 and the concrete slope protection pile 7 connection, install the additional k...

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Abstract

The invention discloses a construction method for a narrow outer enclosure space of a deep foundation. The construction method comprises the steps that slope protection piles are driven in, a foundation pit is excavated, slope protection treatment is conducted through a soil nailing wall technology, a concrete foundation cushion layer is poured, and cushion layer waterproof treatment is conducted; a keel frame is arranged, an outer wall outer side structure formwork is prefabricated, the outer wall outer side structure formwork is arranged on the outer side of the keel frame, and then lightweight aggregate concrete is poured between the protection slope and the outer wall formwork; along with basement floor construction, the keel frame is heightened layer by layer by riveting ceiling keels of the keel frame and ground keels of the keel frame on the upper layer, the lightweight aggregate concrete is poured, and then waterproofing is conducted till the basement height requirement is met; and steel bars are bound along the side face of the waterproof deep foundation, concrete is poured on an inner side formwork, then the inner side formwork is detached, and the basement outer wall waterproof function is achieved. The construction defects that the reserved space between the deep foundation pit slope and a basement wall body is too narrow, the construction space is not enough, and the reserved space occupies the basement area can be effectively overcome.

Description

technical field [0001] The invention relates to the field of enclosure space construction, in particular to a construction method suitable for deep foundations and narrow enclosure spaces. Background technique [0002] In the traditional process, deep foundation pits are excavated with slope protection piles due to the narrow excavation face. Reinforcement, formwork on both sides and concrete pouring; external wall formwork removal, basement external wall waterproofing (paste external wall); basement completed; foundation earthwork backfilling. [0003] The existing construction technology has the following defects: 1. Due to the narrow excavation work surface, the construction work surface of the basement exterior wall is narrow, and even does not have the conditions for the formwork support work surface of the exterior wall (there is not enough space for scaffolding, support formwork, construction of waterproof coating Layers, etc.), resulting in increased construction di...

Claims

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Application Information

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IPC IPC(8): E02D29/045E02D17/04E02D17/20
CPCE02D29/045E02D17/04E02D17/207
Inventor 司顺生
Owner 司顺生
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