水平荷載單樁計算的綜合剛度和雙參數(shù)法桿系有限元數(shù)值解
[Abstract]:In order to improve the accuracy and efficiency of the design and calculation of single pile under horizontal load, a finite element numerical solution of bar system based on the principle of comprehensive stiffness and two-parameter method is established. At the same time, based on the analysis of theory and examples of static load test, this paper points out the defects of m method in the design and calculation of horizontal load pile, which is suggested in the current code of our country, and suggests to improve the method. The finite element method of the bar system established in this paper does not have the limitation of parameter selection as the analytical method, and avoids the cumbersome table checking calculation, and does not need to assume and distinguish the long pile, the short pile and the medium length pile with the constraint conditions at the end of the pile. The calculation results show that the results of finite element method and analytical solution are in good agreement with the analytical solution, and the displacement and rotation angle of the pile top can be guaranteed when the composite stiffness and double parameters are the same as the analytical method. The maximum bending moment sum and its action position of the pile body are in good agreement with the measured results. When the ratio coefficient of each soil layer is determined according to the variation of soil layer in the range of pile length, the better results can be obtained by adjusting the power exponent n and the comprehensive stiffness EI through several trial calculations.
【作者單位】: 福州大學(xué)巖土工程研究所;臥龍崗大學(xué)土木采礦和環(huán)境工程學(xué)院;福建省交通規(guī)劃設(shè)計院;
【基金】:福建省交通廳資助項目(20130002)~~
【分類號】:TU473.1
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