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A method for pile foundation detection using the drilled pile foundation detection structure on the side of the roadbed in operation

A technology for railway embankment and structure detection, which is applied in foundation structure testing, foundation structure engineering, construction, etc. It can solve the problems that there is no very effective method for rigid piles, and there is no clear and specific method for foundation treatment quality inspection, etc., to achieve Good detection effect, simple and fast detection conditions, huge economic and social benefits

Active Publication Date: 2016-06-29
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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  • Application Information

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Problems solved by technology

[0003] At present, there is no clear and specific method for the quality inspection of the foundation treatment of my country's operating railways, especially for the detection of rigid piles in the foundation, and there is no very effective method

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  • A method for pile foundation detection using the drilled pile foundation detection structure on the side of the roadbed in operation
  • A method for pile foundation detection using the drilled pile foundation detection structure on the side of the roadbed in operation

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Embodiment Construction

[0015] Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail:

[0016] Such as figure 1 The described operating railway subgrade side bored pile foundation detection structure includes an elastic wave excitation device 5, a geophone 6, a foundation soil layer 1, a control instrument 7 on the ground, a building layer 2 above the foundation soil layer 1, The pile body 3 and the pile board 4 arranged in the foundation soil layer 1, wherein, the pile board 4 is arranged on the top of the pile body 3, and the top surface of the pile board 4 is connected to the building layer 2, and a through hole is opened in the building layer 2 The elastic wave excitation device of the pile plate 4 is vertically installed with a hole 8, and a vertical detection hole 9 is opened in the foundation soil layer 1 on one side of the pile body 3, and the top of the vertical detection hole 9 extends upward and penetrates the building layer 2 ,...

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Abstract

The invention discloses an operation railroad bed side drilling pile foundation detection structure. A pile plate is arranged on the top of a pile body; the top surface of the pile plate is connected with a building layer; an elastic wave excitation device vertical installation hole which leads to the pile plate is formed in the building layer; a vertical detection hole is formed in a foundation soil layer of one side of the pile body; the top end of the vertical detection hole upwards extends and penetrates through the building layer; the bottom end of the vertical detection hole is located below the bottom of the pile body; an elastic wave excitation device is fixedly connected to the pile plate by the elastic wave excitation device vertical installation hole; a detector is arranged in the vertical detection hole; a signal output end of the detector is connected with a signal input end of a controller by a cable; a control signal output end of the controller is connected with a switch control end of the elastic wave excitation device. According to the invention, a hidden pile foundation of an operation railroad is detected by side drilling, the detection conditions are simple and rapid, the damage to the existing railroad bed is small, and the quality of the pile plate and the pile body can be effectively judged.

Description

technical field [0001] The invention relates to the technical field of foundation treatment quality detection of operational railway subgrades, in particular to a detection structure and detection method for bored pile foundations on the side of operational railway subgrades. technical background [0002] There are many types of foundation treatment methods for railway subgrades in my country. The quality inspection of foundation treatment is to conduct quality inspection by sampling during the construction process. Acceptance methods include load test, dynamic sounding, small strain, foundation coefficient K30 detection, etc. The detection results are partial and limited, and the quality of the foundation cannot be fully evaluated as a whole, resulting in deformation and displacement of the local road gene foundation after the operation of the railway, resulting in settlement and collapse and other diseases. Especially for the foundation quality inspection of operating ra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D33/00
CPCE02D33/00
Inventor 韦德江刘铁李军蔡盛陈洪杰雷理崔德海林昀
Owner CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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