地基土上水工建筑物的抗滑动稳定研究(续)

Study on anti-sliding stability of hydraulic structures on subbed soils (continued)

研究地基土上水工建筑物抗滑稳定中存在的问题。利用在基坑内压板抗滑动试验成果,确定地基土回弹影响后的抗滑承载能力降低数值,定量确定地基土抗滑剪应力包线和抗滑摩擦系数;提出采用地基土承受偏心荷载的最大压应力σmax预测建筑物位移、滑动和地基土蠕变滑动的设计方法;确定地基土蠕变滑动轮廓;限定地基土的最大压应力等。按拟定方法回顾计算两座已建水工建筑物,成果符合实物工况。

A study on the anti-sliding stability of hydraulic structures on subbed soil has been made.Using the anti-sliding test results of dragged concreting pressure plate in foundation pits,the decreased value of anti-slid- ing bearing capacity after spring back influenced of subbed soil is determined;envelope of anti-sliding shear stress and friction coefficient are also quantitatively determined.It is suggested to use the maximum compressive stress σmax of eccentric load to predict structure displacement,sliding and creepy slippage of subbed soil,to determine sliding contour creep,and limit the maximum compressive of subbed soil.Two built hydraulic structures are reviewed and calculated by drafted method,and the results are accord with real conditions.