地基土上水工建筑物的抗滑动稳定

利用基坑内压板抗滑动试验成果,确定地基土抗滑动承载能力。采用地基土承受偏心荷载的最大压应力σmax控制地基土与压板的位移和抗滑动形式,可产生3种不同的最大位移面,形成8种抗滑动形式。根据地基土承受的最大压应力,提出定量确定地基土与压板抗滑动的计算摩擦阻力的方法和设计抗滑动的4个数值计算公式,分析预测可能发生的最大位移面和抗滑动形式。对三河闸、高良涧进水闸、三河船闸3座已建水工建筑物的抗滑稳定性分析表明,计算成果符合实物工况。

Anti-sliding stability analysis of hydraulic structures on foundation soil

Based on the anti-sliding test result of clip plates in foundation pits,the anti-sliding stability of foundation soil was determined.By adoption of the maximum compressive stress on foundation soil subjected to eccentric loads for controlling the displacement and anti-sliding form between foundation soil and clip plates,there are 3 different displacement surfaces and 8 kinds of anti-sliding forms.According to the maximum compressive stress on foundation soil,methods for calculation of the frictional resistance between foundation soil and clip plates and 4 formulas methods for anti-sliding design were worked out,and the maximum displacement surface and anti-sliding forms that might occur were predicted.The analysis of the anti-sliding stability of 3 existing hydraulic structures,i.e.the Sanhe sluice,the Sanhe ship lock,and the Gaoliangjian inlet sluice,shows that the calculated result accords with the reality.