缓倾角红层开挖路堑边坡支护设计中支护力计算

CALCULATION METHOD OF THE BEARING FORCE IN THE DESIGN OF SUPPORTING STRUCTURE FOR ROCK SLOPE IN GENTLY INCLINED RED BEDS

分析了四川盆地缓倾角红层地质结构特征,将下覆泥岩风化形成凹岩腔后的砂岩视为悬臂岩梁,提出了一种计算泥岩风化凹进极限深度及在设计支撑柱时计算支护力的计算方法,并给出一个计算示例。

In Sichuan Red Basin,excavating cuttings in gently inclined red beds composed of sandstone and mudstone intercalations,mudstone would be indented inward by weathering,and result in a niche on the slope surface.slope,and the bearing force of the support structure must computed in design.In this paper,the overlying sandstone bed is regarded as cantiever beam,and a calculation method for the bearing force is developed,A calculation example is also given.