| 摘要 |
FIELD: construction. ^ SUBSTANCE: shell of large diametre comprises a cylindrical shell ring arranged as capable of placement on an earth foundation and equipped with a support element. The support element is arranged in the form of at least one support ring rigidly fixed with the external surface of the shell above its lower edge. The plane of the support ring is perpendicular to the longitudinal axis of the shell. The support ring is fixed with stiffening ribs, preferably gussets, perpendicular edges of which are rigidly fixed with the shell surface and the appropriate side of the support ring. The support ring width is determined from the expression m=F/(2Ç R â0), where m - support ring width, m; F - vertical rated load onto the earth foundation transferred by the shell, kg; R - external radius of the cylindrical shell; â0 - bearing capacity of the foundation material, kg/m2. The distance from the support ring to the lower edge of the cylindrical shell depends on properties of soils of the foundation and is determined by the ratio 1/10 H1/40 H, where H - height of the shell taken within the limits from 1 to 20 m. The cylindrical shell, support ring and stiffening ribs are made of metal. Stiffening ribs may be arranged both from the side of ring surface, the opposite surface perceiving the earth back pressure and at both sides of the support ring. ^ EFFECT: invention provides for stability of thin soil-filled shells of large diametre. ^ 2 cl, 4 dwg |
