Composite foundation fill slope stability coefficient calculation method based on transfer coefficient method
A technology of stability coefficient and composite foundation, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as nonconformity, stability coefficient error of composite foundation filling slope, etc., and achieve a simple and clear calculation process. , The calculation principle is clear and reliable
Active Publication Date: 2021-04-02
ZHENGYE ENG & INVESTMENT INC
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[0003] The technical problem to be solved by the present invention is to provide a method for calculating the stability coefficient of the composite foundation fill slope based on the transfer coefficient method, so as to solve the problem of commonly using piles and soil in the evaluation of the stability of the composite foundation slope in the prior art. Composite strength parameters are calculated and analyzed, and the piles and remaining soil in the reinforcement area are regarded as a composite material, which does not conform to the actual situation of the project, resulting in large errors in the stability coefficient of the calculated composite foundation fill slope and other technical problems
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[0035] Concrete implementation process of the present invention will be provided below, as figure 1 , figure 2 As shown, for the piles arranged in a square, the pile replacement rate can be obtained from the pile spacing s and the pile diameter d Divide the composite foundation filling slope slide into several blocks, including the block with piles and the block without piles; for the block without piles, the cross-sectional area is A i , the width of the cross-section is consistent with the width of the bar containing piles; the cross-sectional area of the bar containing piles is the area A treated by one pile e =s 2 , where the cross-sectional area of the pile is A p = πd 2 / 4, the remaining soil cross-sectional area is A s =A e -A p , pile replacement rate The acting load on the composite foundation is p i , the stress on the remaining soil is p si , the pile shared stress is p pi , Formula (1) can be obtained from the replacement rate principle.
[0036]...
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The invention discloses a composite foundation fill slope stability coefficient calculation method based on a transfer coefficient method, and the method comprises the following steps: 1, for piles arranged in a square shape, obtaining a pile replacement rate according to a pile distance s and a pile body diameter d, and dividing a slope sliding body into a plurality of strip blocks, wherein the divided strip blocks comprise strip blocks containing piles and strip blocks without piles; 2, calculating the cross section area Ai of the strip block without the pile and the cross section area of the strip block with the pile; 3, calculating the soil strip gravity of the strip blocks without the piles and the soil strip gravity of the strip blocks with the piles; 4, calculating the stability coefficient of the composite foundation fill slope based on the calculation results of the steps 2 and 3; the technical problems that in the prior art, in composite foundation slope stability evaluation,piles and residual soil in a reinforcing area are regarded as a composite material, the actual engineering situation is not met, and the calculated composite foundation fill slope stability coefficient is large in error are solved.
Description
technical field [0001] The invention belongs to the technical field of slope stability calculation, in particular to a method for calculating the stability coefficient of a composite foundation filling slope based on a transfer coefficient method. Background technique [0002] When carrying out filling construction on soft soil foundations, composite foundations are often used to treat the soft soils to enhance the bearing capacity and anti-sliding stability of the foundations. Under the action of upper loads, the piles and soil can jointly bear the load through deformation coordination. , due to the large difference in the properties of the pile and the soil material, the upper load is not evenly distributed on the pile and the remaining soil. The influence of the pile-soil force ratio should be considered in the shear strength of the sliding surface of the slope; at present, in the stability evaluation of composite foundation slopes, the composite strength parameters of pi...
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IPC IPC(8): G06F30/13G06F119/14
CPCG06F30/13G06F2119/14
Inventor 沈志平李磊刘欢
Owner ZHENGYE ENG & INVESTMENT INC
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