Refined treatment method of site anti-liquefaction design based on finn model
A processing method and refined technology, applied in hydraulic models, hydraulic engineering equipment, hydraulic engineering, etc., can solve problems affecting engineering cost and reliability, improve engineering reliability, good reference and reference, and ensure accurate sexual effect
Active Publication Date: 2016-08-24
CEEC JIANGSU ELECTRIC POWER DESIGN INST CO LTD
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Problems solved by technology
[0004] Based on the current problems in the anti-liquefaction design of liquefaction sites, the shortcomings of the traditional "standard method" in the application of large-scale civil engineering and water conservancy projects are becoming more and more obvious, which affects the cost and reliability of the project
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[0040] The fine-grained treatment method for site anti-liquefaction design based on the Finn model includes the following steps:
[0041]Step 1: For the liquefied soil layer in the leveling site, set the gradually changing anti-liquefaction index I N , based on the Finn liquefaction model, for each anti-liquefaction index I N The corresponding liquefaction sites are numerically simulated separately, so that under the same site conditions, different anti-liquefaction indices I N Corresponding excess pore water pressure ratio of liquefied soil γ u .
[0042] Step 2: According to the calculation method in Step 1, gradually change the burial depth d of the liquefied soil layer on the site, and obtain the different anti-liquefaction index I of the liquefied soil layer under different burial depth d conditions N Corresponding excess pore water pressure ratio of liquefied soil γ u , to fit the data to the result, so as to get γ u About Liquefaction Index I N and the functional ...
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The invention discloses a site anti-liquidation design fine treatment method based on the Finn model. The method is suitable for anti-liquidation design of liquefied sites in civil engineering and hydraulic engineering. The method is characterized in that 1, based on the liquidation theory of the Finn model, the computational formula representing liquidation affected reduction factor continuity is provided by studying the relation between the excess pore-water pressure ratio of a site liquidation soil layer and anti-liquidation factors with the excess pore-water pressure ratio of the site liquidation soil layer as the link, and the problem that liquidation affected reduction factor values are obtained in a grading mode, and therefore the leaping degree is large is solved; in this way, conservation or insecurity existing in the 'Code for Seismic Design of Building (GB50011-2010)' can be avoided, and the designing scheme is more reasonable; 2, the concept of 'site excess pore-water pressure ratio' is proposed, the method for quickly computing the 'site excess pore-water pressure ratio' is provided, and then a site liquidation judging result obtained according to the 'Code for Seismic Design of Building (GB50011-2010)' can be checked corrected by grading site liquidation according to the 'site excess pore-water pressure ratio'.
Description
technical field [0001] The invention relates to a refinement treatment method for site anti-liquefaction design based on a Finn model, and belongs to the technical field of water conservancy engineering. Background technique [0002] At present, the problem of soil liquefaction in engineering construction is mainly guided by the "Code for Seismic Design of Buildings (GB50011-2010)" and other norms. In the relevant codes, the "grading" method is used to determine the liquefaction effect reduction coefficient of the liquefied soil layer, and the result has a large jump; this makes in actual engineering, small changes in some original parameters may lead to liquefaction treatment schemes. There is a qualitative change. [0003] For example, in the design of bank slope stability in the intake and drainage section of Huaneng Jinling Power Plant Phase II Project (2×1000MW), for this bank slope, the anti-liquefaction index I of the soil layer within the depth range of 0m to 10m N...
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IPC IPC(8): E02B1/00E02B1/02
Inventor 卢红前邹谦束加庆刘爽汉会朱永强吴兆和
Owner CEEC JIANGSU ELECTRIC POWER DESIGN INST CO LTD