Post-grouting capped rigid pile and drainage body combined foundation treatment method
A foundation treatment and drainage body technology, which is applied in foundation structure engineering, soil protection, construction, etc., can solve the problems of insufficient soil bearing capacity between piles, uneconomical use, and large amount of rigid piles, so as to reduce deformation and damage, reduce dosage, and control the effect of late settlement
Active Publication Date: 2016-08-17
北方国际合作股份有限公司
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, the load-bearing properties of the composite foundation are basically controlled by rigid piles, and the bearing capacity of the soil between the piles cannot be fully utilized. At the same time, the amount of rigid piles is large, which is uneconomical.
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
[0029] Embodiment is the ground reinforcement treatment of highway engineering, and its construction method is:
[0030] (1) in figure 1 In the process, the site is first leveled, and the horizontal drainage body 2 is laid on the surface of the soft soil foundation 1 .
[0031] (2) The vertical drainage body 3 is constructed in the soft soil foundation 1, and the top of the vertical drainage body 3 enters the horizontal drainage body 2 to ensure that the drainage systems are interconnected.
[0032] (3) Rigid piles 4 are constructed in the soft soil foundation 1 , and the top surface of the rigid piles 4 is lower than the upper surface of the horizontal drainage body 2 .
[0033] (4) Remove the horizontal drainage body 2 above the top surface of the rigid pile 4 and bury the grouting bag 5, the bottom surface of the grouting bag 5 contacts the rigid pile 4, and the top surface of the grouting bag 5 is flush with the top surface of the horizontal drainage body 2, like figure...
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
Post-grouting capped rigid pile and drainage body combined foundation treatment method. It lays a horizontal drainage body on the surface of the soft soil foundation, constructs a vertical drainage body inside the foundation, and connects the vertical and horizontal drainage bodies to form a drainage channel; then constructs rigid piles in the soft soil foundation, and places grouting bladders and steel bars on the top of the piles Concrete pile caps form a controllable support system; when the grouting bladder is filled with water and stabilized, the grouting bladder is squeezed under the action of the upper load and shrinks due to drainage, the rigid pile bears less load, and the foundation soil is under the action of the upper load After drainage and consolidation, the bearing capacity is improved; when the grouting bladder is grouted and solidified, the rigid pile, slurry, and pile cap form a rigid support to bear more upper loads and reduce the load pressure of the foundation soil. This method can not only give full play to the bearing capacity of the foundation soil, reduce the amount of rigid piles, and reduce economic investment, but also can effectively control the later settlement of the project and reduce the deformation and damage of the superstructure caused by excessive settlement.
Description
technical field [0001] The invention relates to a soft soil foundation reinforcement treatment method, which can be applied to foundation reinforcement and settlement prevention and control of highways, railways, earth-rock dams, building construction and other projects. Background technique [0002] Soft soil has the characteristics of high water content, large void ratio and low shear strength. To build roads, railways, earth-rock dams, housing construction and other projects on soft soil foundation, it is necessary to improve the bearing capacity of soft soil foundation and control its settlement. At present, there are many reinforcement treatment techniques for soft soil foundations, such as drainage consolidation method, capped rigid pile composite foundation method, etc. [0003] The drainage consolidation method sets drainage bodies inside and on the surface of the soft soil layer to dissipate the pore water pressure of the soil and increase the effective stress of t...
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 Patent Type & Authority Patents(China)
IPC IPC(8): E02D3/10E02D3/08
Inventor 周志军
Owner 北方国际合作股份有限公司