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Construction method for cast-in-place concrete pile of soft soil foundation with stone layer

A technology of soft soil foundation and construction method, which is applied in basic structure engineering, sheet pile wall, building, etc., can solve the problems of increased concrete consumption, inability to pass through the block stone layer, and increased filling coefficient, so as to achieve simple installation and save manpower. , the effect of improving work efficiency

Inactive Publication Date: 2012-11-07
TIANJIN 20 CONSTR
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  • Claims
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Problems solved by technology

[0002] Generally, reinforced concrete cast-in-place piles are constructed by drilling methods. Hole collapse is very common in the process of forming reinforced concrete cast-in-place piles on soft soil foundations. When piles are formed, the amount of concrete increases and the filling coefficient increases. Steel casings or superstructures are required. Long steel casing; the steel casing deforms too much in the area where there is a rock layer and cannot pass through the rock layer

Method used

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  • Construction method for cast-in-place concrete pile of soft soil foundation with stone layer
  • Construction method for cast-in-place concrete pile of soft soil foundation with stone layer
  • Construction method for cast-in-place concrete pile of soft soil foundation with stone layer

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Embodiment Construction

[0019] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0020] see Figure 1 to Figure 6 , a kind of soft soil foundation concrete filling pile construction method with block stone layer, comprises the following steps:

[0021] 1) Determining the center position of the reinforced concrete cast-in-place pile 7;

[0022] 2) Sink the prefabricated pile tip 1 to the design position with the steel casing 5 by using the vibration sinking method, and make the bottom elevation of the steel casing 5 equal to the pile bottom elevation;

[0023] In this embodiment, a concrete pouring port 5-1 is provided on one side of the upper end of the steel casing 5. A walking-type vibrating tube sinking pile machine 2 is used, equipped with a DZ110kw vibratory hammer, and the steel casing 5 is pressed on the pile tip...

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Abstract

The invention discloses a construction method for a cast-in-place concrete pile of a soft soil foundation with a stone layer. The construction method comprises the following steps: 1), determining the centre position of a cast-in-place reinforcement concrete pile; 2), using a vibration sunken tube method to sink the precast pile tip to the designed position, and enabling the bottom elevation of a steel sleeve to be parallel to that of the pile; 3), putting a reinforcement cage to the steel sleeve; 4), pouring concrete to the designed elevation of the pile top; and 5), waiting for 1-2 hours, pulling out the steel sleeve to form the cast-in-place reinforcement concrete pile. The construction method is simple and easy to operate, high in efficiency, convenient to control project quality, and safe and reliable, thereby the construction cost is greatly reduced, the working efficiency is improved, and manpower, material resources and financial resources are saved; moreover, the construction method is applicable to construction environments such as the soft soil foundation, regions abundant in underground water and the like.

Description

technical field [0001] The invention relates to a construction method of reinforced concrete cast-in-situ piles, in particular to a construction method of concrete pour-in-place piles on soft soil foundations with block stone layers. Background technique [0002] Generally, reinforced concrete cast-in-place piles are constructed by drilling methods. Hole collapse is very common in the process of forming reinforced concrete cast-in-place piles on soft soil foundations. When piles are formed, the amount of concrete increases and the filling coefficient increases. Steel casings or superstructures are required. Long steel casing; the steel casing is greatly deformed in areas with block rocks and cannot pass through the block rocks. In the coastal area, the silt layer is relatively deep and the block stone layer is deeply buried. Considering the construction technology and engineering cost, it is necessary to explore a new construction method for reinforced concrete cast-in-place...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/38E02D11/00E02D5/66
Inventor 肖策褚丝绪孟凡奇徐国良姜云龙张鹏飞
Owner TIANJIN 20 CONSTR
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