RU2005106662A - PLATE AND PILED BASE - Google Patents

Claims (5)

1. Plate-pile foundation, including piles and reinforced concrete slab or grillage, damping pads between the heads of piles and reinforced concrete slab or grillage of easily deformable material, characterized in that the damping pads of a uniform compressibility material, such as extruded polystyrene foam, have different thicknesses moreover, the estimated thickness of the damping gaskets is taken in the range from 10 to 60 mm and increases in the direction from the central and middle rows of piles to the extreme rows of piles and corner ayam with a ratio of 1: 2: 3. 2. The pile-pile foundation according to claim 1, characterized in that the damping pads of easily deformable material have the same thickness ranging from 10 to 60 mm, and the ratio of the deformation modulus of the material of the pads over the heads of the middle rows of piles, the extreme rows of piles and over the corner piles taken as 3: 2: 1. 3. The pile-pile foundation according to claim 1, characterized in that damping pads of easily deformable and uniform in compressibility material with a thickness of 10-40 mm are installed only over the heads of the extreme rows of piles and corner piles, and the ratio of the thickness of the pads over the heads of the extreme rows of piles and over corner piles is taken as 2: 3. 4. The pile-pile foundation according to claim 1, characterized in that damping pads of easily deformable material of the same thickness within 10-40 mm are installed only above the heads of the extreme rows of piles and corner piles, and the ratio of the deformation module of the gaskets above the heads of the extreme rows of piles and over corner piles taken as 3: 2. 5. The pile-pile foundation according to claim 1 on unevenly compressible soils, characterized in that under the part of the reinforced concrete slab or grillage resting on incompressible soil, a damping pad of easily deformable material is installed, the thickness of which δ is determined from relation (1)

where S _{St. f} - _settlement pile foundation without taking into account the compression of gaskets, m; S _pr.max - maximum draft from compression of gaskets over piles, m; p is the average pressure on the soil at the bottom of the plate 1 at the place of bearing on incompressible soil, MPa; L is the size of the reinforced concrete slab in plan, m; (ΔS / L) _u is the limit value of the relative difference of sediments; E ₀ - the module of deformation of the material of the damping pad in place of bearing on incompressible soil.