Subway vehicle unfavorable geology CFG pile foundation treatment construction method
A technology of foundation treatment and construction method, which is applied in basic structure engineering, sheet pile wall, building and other directions, can solve the problems of long construction period and cumbersome removal of pile heads, etc., to improve construction efficiency, shorten construction period, and achieve simple operation. Effect
Active Publication Date: 2021-10-26
CRPCEC SHENZHEN ENG +1
View PDF2 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] In view of the above-mentioned related technologies, the inventor believes that there are the following defects: there are usually several CFG pile foundations arranged at intervals in the same area, and the removal process of the pile heads in the related technologies is relatively cumbersome, resulting in a long construction period and certain problems. room for improvement
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0041] The following is attached Figure 1-6 The application is described in further detail.
[0042] The embodiment of the present application discloses a construction method for treating the foundation of subway vehicles with bad geology CFG piles, combining Figure 1 to Figure 3 , including the following steps:
[0043] S1. Measurement and setting out:
[0044] According to the drawing, the control point and axis are used to position and set out the line, measure and release the specific position of each CFG pile 1, drive it into the ground to a certain depth with a steel pipe, and after pulling it out, put in lime, and use the center of the lime hole as the center of the pile.
[0045] S2. The drilling rig is in place and the hole is drilled:
[0046]After the CFG pile drilling rig is in place, correct the position so that the drill pipe is vertically aligned with the center of the pile position, and mark the drilling depth with red paint on the side of the frame next t...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a subway vehicle unfavorable geology CFG pile foundation treatment construction method. The subway vehicle unfavorable geology CFG pile foundation treatment construction method comprises the following steps that (S1) a drilling machine drills a formed hole to a designed elevation; (S2) after drilling is conducted to the designed elevation, drilling is stopped, and a drill rod is lifted while concrete is poured into a pile hole in a pressing mode till the concrete reaches the designed pile top elevation; and (S3) soil between piles is excavated, the pile cutting position of a pile head is determined after the soil between the piles is cleaned, a pile head cutting device is installed after a cutting hole which is coaxial with a CFG pile is formed in the pile top, and after installation is completed, the pile head cutting device is started, so that the pile head cutting device conducts cutting in the direction from the cutting hole to the outer wall of the pile head and from the outer wall of the pile head to the interior of the cutting hole in the radial direction of the pile head, when the sum of the cutting depths in the two cutting directions is larger than the difference value of the radius of the pile head and the radius of the cutting hole, cutting in the radial direction of the pile head is stopped, and the pile head cutting device conducts 360-degree circumferential cutting in the circumferential direction of the pile head. The subway vehicle unfavorable geology CFG pile foundation treatment construction method has the effects that the working efficiency is improved, and the construction period is shortened.
Description
technical field [0001] The invention relates to the field of foundation treatment, in particular to a method for treating the foundation of subway vehicles with unfavorable geology CFG piles. Background technique [0002] During the construction process of foundation treatment, it is necessary to divide the foundation treatment into different areas according to the requirements of the foundation bearing capacity of each functional area and the settlement control standards, and then select the foundation treatment method suitable for this area, such as CFG pile composite foundation treatment. The CFG pile is a low-strength concrete pile, which can make full use of the bearing capacity of the soil between the piles and transfer the load to the deep foundation. [0003] In the related technology, after the excavation and removal of the soil between the piles is completed, when cutting the pile head, the pile head is usually manually driven to cross-cut the pile head. The pile ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): E02D9/00E02D5/34E02D11/00
CPCE02D9/00E02D5/34E02D11/00
Inventor 徐强李文生罗玉伟程宗明刘小滔汤雄峰何健宇刘旭阳
Owner CRPCEC SHENZHEN ENG