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An analysis method and technology of bearing capacity, applied in sheet pile walls, special data processing applications, instruments, etc., can solve the problems of calculating the bearing capacity of deflected pipe piles, deflection and deflection of prestressed pipe piles, etc., and achieve improved bearing capacity Force analysis efficiency, the effect of simplifying engineering
Inactive Publication Date: 2017-10-13
佛山市禅城区建设工程质量安全检测站
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[0002] The prestressed pipe piles placed in the foundation soil are slender structures. If the foundation soil around the prestressed pipe piles moves horizontally, the prestressed pipe piles will be deflected, deflected or even broken
In order to avoid the problem of inclined piles, it is necessary to determine the bearing properties of prestressed pipe piles. However, how to determine the bearing properties of prestressed pipe piles is a technical problem that has not been solved, especially for skewed pipe piles, there is no reasonable method at present To calculate the bearing capacity of deflected pipe piles
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Embodiment 1
[0034] see figure 1 , the method for analyzing the bearing capacity of deflected pipe piles provided in this embodiment includes the following steps:
[0035] S1 uses finite element analysis to divide the deflected pipe pile into N pieces along the length direction with length L i , a deflected pipe pile unit with a diameter of d;
[0038] In the formula, Indicates the displacement between the pile and soil of the i-th deflected pipe pile unit, i=1,...,N, Indicates the lateral resistance of the i-th deflected pipe pile unit, C S is the lateral frictional resistance of the pile per unit displacement in the elastic stage of the foundation soil where the deflected pipe pile is located, f u is the limit value of side friction resistance of deflected tubular piles, S μ is the displacement between the deflected pipe pile and the foundation soil where the side friction resistance of the deflected pipe pi...
Embodiment 2
[0049] On the basis of Example 1, S μ The value range of is set according to the type of foundation soil, specifically:
[0050] When the foundation soil is filled soil, set it to 7-10mm; when the foundation soil is muddy clay, set it to 7-12mm; ~10mm, when the foundation soil is sandy soil, set it to 5~9mm, and when the foundation soil is weathered rock and soil, set it to 3~7mm.
Embodiment 3
[0052] On the basis of embodiment 1 or embodiment 2, s' μ The value range of is set according to the type of foundation soil, specifically:
[0053] When the foundation soil is common clay, s′ μ The value is 0.25d, when the foundation soil is hard plastic clay, s′ μ The value is 0.1d, when the foundation soil is sandy soil, s′ μ The value is 0.08~0.1d, when the foundation soil is weathered rock and soil, s′ μ The value is 0.05-0.08d, where d is the diameter of the deflected pipe pile.
[0054] Set according to the type of foundation soil S μ , s' μ The value range of , can make the defined pile side load transfer function and pile tip load transfer function closer to the actual situation, so that the subsequent analysis of the bearing capacity of deflected tubular piles is more realistic and close to reality.
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Abstract
The invention provides an oblique tubular pilebearing capacity analyzing method. The oblique tubular pilebearing capacity analyzing method comprises the following steps: S1, dividing an oblique tubular pile into a plurality of oblique tubular pile units; S2, constructing a pile side load transmitting function; S3, constructing a pile end load transmitting function; and S4, establishing a mechanical model of the oblique tubular pile by the pile side load transmitting function and the pile end load transmitting function, and calculating the internal force and the displacement of junctions of the various oblique tubular pile units and the side resistance and the end resistance of the oblique tubular pile to obtain the bearing capacity analyzed result of the oblique tubular pile. By the oblique tubular pile bearing capacity analyzing method, the bearing capacity of the oblique tubular pile is analyzed, and the problem that the bearing capacity of the oblique tubular pile cannot be analyzed by the traditional theory is solved.
Description
technical field [0001] The invention relates to the field of engineering construction, in particular to a method for analyzing the bearing capacity of deflected pipe piles. Background technique [0002] The prestressed pipe piles placed in the foundation soil are slender structures. If the foundation soil around the prestressed pipe piles moves horizontally, the prestressed pipe piles will be deflected, deflected or even broken. In order to avoid the problem of inclined piles, it is necessary to determine the bearing properties of prestressed pipe piles. However, how to determine the bearing properties of prestressed pipe piles is a technical problem that has not been solved, especially for skewed pipe piles, there is no reasonable method at present To calculate the bearing capacity of deflected pipe piles. Contents of the invention [0003] In view of the above problems, the present invention provides a method for analyzing the bearing capacity of deflected pipe piles. ...
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