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A Calculation Method for the Stability of Concrete Pile Composite Foundation

A technology for concrete piles and composite foundations, which is applied in design optimization/simulation, geometric CAD, etc., can solve the problem of inability to accurately calculate the stability of concrete piles and composite foundations, and achieves improved bending and failure resistance, easy access to parameters, and simple operation. Effect

Active Publication Date: 2022-05-31
CHINA RAILWAY ERYUAN ENG GRP CO LTD
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  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for calculating the stability of concrete pile composite foundations in view of the problem that the existing stability analysis methods cannot accurately calculate the stability of concrete pile composite foundations

Method used

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  • A Calculation Method for the Stability of Concrete Pile Composite Foundation
  • A Calculation Method for the Stability of Concrete Pile Composite Foundation
  • A Calculation Method for the Stability of Concrete Pile Composite Foundation

Examples

Experimental program
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Effect test

Embodiment 1

[0071] The width of the embankment top surface subgrade w=20m, the height of the embankment h=5m, and the slope ratio of 1:2.

[0075] Embankment filling weight γ

[0076] Foundation clay soil weight γ

[0078] The section of the concrete pile is circular, the length of the concrete pile is 17m, and the diameter is greater than 400mm. Proceed as follows

[0083]

[0087]

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Abstract

The invention belongs to the technical field of geotechnical engineering, and specifically relates to a method for calculating the stability of a concrete pile composite foundation. The method includes A. determining the structural size of the roadbed; determining the physical parameters of the roadbed and reinforcement materials; B. determining the initial sliding surface position of the foundation C. Determine the ultimate bending moment of the concrete pile considering the tension effect of the cushion; D. Determine the equivalent shear resistance of the concrete pile; E. Use the limit equilibrium method to analyze the stability of the foundation after reinforcement. This method takes into account the restraint effect of cushion tension bars on the deformation of piles in composite foundations, and can more accurately reflect the contribution of cushion tension bars under the embankment to the anti-sliding ability of piles in composite foundations, and has good practicability and reliability.

Description

A kind of stability calculation method of concrete pile composite foundation technical field The invention belongs to the technical field of geotechnical engineering, be specifically related to a kind of concrete pile composite foundation stability calculation method Law. Background technique In order to meet the post-construction settlement control requirements of high-speed railway and expressway roadbed, my country's high-speed railway and expressway road The foundation widely uses high-strength piles and geosynthetics to treat soft soil foundations, such as concrete pile-net structure composite foundations. existing high The stability analysis methods of composite foundation with strength piles, namely equivalent sand pile method, axial moment method, and soil load method between piles, all have certain requirements. limitation. Equivalent sand pile method is equivalent to pile body as the sand pile with certain friction angle, and the pile body after the fric...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F30/13
Inventor 薛元张东卿罗强刘菀茹张良马宏飞曾锐牟迪周文洋张硕姜浩冯子亮张涛李睿
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD
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