【摘要】 为了更加真实反映工程的实际接触情况,在抗滑桩与周围土体之间以及基岩与上覆土体分界面设置接触面单元,详细分析了坡体在加固前后的稳定状态和开挖过程中抗滑桩受力作用机理。揭示出抗滑桩体在基岩与上覆土体分界面处所受到的轴向力和剪切应力较大,为重点控制断面。分界面处桩体应力调整时间滞后于桩顶与桩底应力调整时间,在坡体应力调整过程中桩体在分界面处所受扰动较大。桩体在分界面处的最大应力并不是稳定状态时的应力,而是出现在坡体的应力调整过程中。更多还原

【Abstract】 In order to reflect the actual contact state in slope reinforced anti-slide piles,created the interface elements between bedrock and its upper soil and anti-slide piles and its surrounding soil,minutely analyzed the slope stability before and after reinforcement and the stress mechanism of anti-slide piles during excavation.Revealed the axial and shear stress of the anti-slide piles are larger at interface between bedrock and soil,the section of anti-slide piles at interface is its dangerous one.Stress adjustment time of anti-slide piles at interface lag that of pile top and pile bottom,the piles at interface suffered greater disturbance during stress adjustment of slope.The maximum stress of anti-slide pile at interface is not its stress of slope steady state,but appears in the stress adjustment process of slope.更多还原