Ways to increase the economical effectiveness of foundations for agricultural buildings with three-hinged bents

Autor: N. V. Zhukov, P. N. Kashkarov, P. D. Evdokimov
Rok vydání: 1979
Předmět:
Zdroj: Soil Mechanics and Foundation Engineering. 16:174-179
ISSN: 1573-9279
0038-0741
DOI: 10.1007/bf01704127
Popis: 1. The failure of a sandy foundation bed under a rigid embedded reinforced-concrete foundation (h/b≧0.5) with a flat, rough lower surface is three-dimensional in nature when the loads are inclined at δ=20–40° to the vertical. 2. Plane shear is not observed when the load is inclined at an angle δ=ϕ and the eccentricity e≈0 (ϕ is the angle of the soil's internal friction as determined on a shear apparatus in accordance with GOST 12248–66). 3. The settlements and lateral displacements of an embedded foundation (h/b>0.5) in the limiting state are 2–3 times larger than those of the nonembedded foundation; lateral displacements exceed the limiting values established for farm buildings [2], or approach them. 4. For angles δ=20–40°, eccentricity of the inclined load in the direction opposite to the horizontal component, but not less than rC (rC is the core radius of the section) effects an increase in the ultimate load as compared to a central positioning of the resultant. Additional experiments and theoretical studies are required to investigate the role of positive and negative eccentricity on the bearing capacity of the foundation bed. 5. For loads inclined at angles δ=35–40° and a relative foundation embedment 0.5≦h/b≦1, computation in accordance with SNiP II-15-74 yields considerably lower bearing capacity than computation from experimental data. 6. The studies that we conducted are used to develop a more economical method of computing and designing foundations for farm buildings under an inclined loading, which is employed in practice [2].
Databáze: OpenAIRE
Externí odkaz: