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| Approximate formulas of critical edge pressure and critical load of subsoil with K0≠1 |
| Received:November 04, 2008 Revised:November 09, 2009 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20106023 |
| KeyWord:coefficient of earth pressure at rest critical edge pressure critical load approximate formula |
| Author | Institution |
| 梅岭 |
江苏科技大学土木工程与建筑学院,镇江 12003;南京工业大学 土木工程学院,南京 |
| 梅国雄 |
南京工业大学 土木工程学院,南京 |
| 易宗发 |
江西省交通厅 科技教育处,南昌 |
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| Abstract: |
| When it proposes calculation formulas of critical edge pressure pcr of subsoil and critical load p1/4, coefficient of earth pressure at rest K0 equals to 1. It means that the field of geostatic stress equal to hydrostatic state stress. This supposal increases the lateral load of subsoil, and makes the subsoil be in intensive state, that results in a higher bearing capacity of subsoil. Determining the stress state of one point in subsoil, then proposing approximate formulas of subsoil critical edge pressure and critical load when K0≠1 based on Mohr-Coulomb criterion. This method corrects some calculating mistakes when it proposes calculation formulas of subsoil bearing capacity which obtains K0≠1 by some scholars. And it compensates the limitation of some other calculation formulas. The influence of shear strength indexes on critical load of subsoil is found. Conditions which are applicable to the approximate formula are given. |
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