Abstract: On condition that the upper load varies greatly from area to area, the stiffness of a composite foundation usually needs to be adjusted and optimized by changing the length or diameter of a proportion of piles to control ...

Abstract: The unloading and reloading of geostress during the excavation of large underground caverns tends to bring about large deformation and failure problems of rock masses with interlayer staggered zones (ISZs), posing significant ...