本文選題：土壤　切入點(diǎn)：垂直載荷　出處：《農(nóng)業(yè)機(jī)械學(xué)報(bào)》2017年09期 　論文類型：期刊論文

【摘要】：基于有限元理論分析了土壤在承受垂直和水平復(fù)合載荷下的變形規(guī)律。首先通過平板沉陷試驗(yàn)分析確定土壤在垂直載荷作用下的載荷-變形關(guān)系,接著考慮水平載荷的影響,通過剪切試驗(yàn)確定土壤的復(fù)合載荷-變形關(guān)系。研究結(jié)果表明,水平載荷會(huì)造成土壤的滑動(dòng)沉陷,水平剪切位移與土壤的滑動(dòng)沉陷量之間呈線性關(guān)系。對(duì)影響滑動(dòng)沉陷量的因素進(jìn)行了分析,其中影響比較大的因素是垂直方向的載荷以及土壤的塑性參數(shù):黏聚力和摩擦角,而土壤的彈性參數(shù):彈性模量和泊松比對(duì)滑動(dòng)沉陷量的影響比較小。
[Abstract]:Based on the finite element theory, the deformation law of soil under vertical and horizontal composite loads is analyzed. Firstly, the load-deformation relationship of soil under vertical load is determined by plate subsidence test, and then the influence of horizontal load is considered. The composite load-deformation relationship of the soil is determined by shear test. The results show that the horizontal load will result in the sliding subsidence of the soil. There is a linear relationship between horizontal shear displacement and the amount of sliding subsidence in soil. The factors influencing the amount of sliding subsidence are analyzed. The factors that influence the amount of sliding subsidence are the load in vertical direction and the plastic parameters of soil: cohesion force and friction angle. But the elastic parameters of soil: elastic modulus and Poisson ratio have little effect on slip settlement.
【作者單位】： 軍械工程學(xué)院火炮工程系;
【基金】：軍內(nèi)重點(diǎn)科研項(xiàng)目(404040602)
【分類號(hào)】：TU433
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本文編號(hào)：1580042