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欧洲岩土工程规范Eurocode7直接法中验证地基和结构构件的破坏或过度变形时,给出了不同情况下作用力、岩土参数和反力的分项系数,不同的分项系数组合得到了三种设计方法。案例分析表明,这三种设计方法的结果有较大离散。在偏心受压条形基础和悬臂式挡土墙的设计中,活载的分布决定其分项系数的选择,同时偏心的大小也影响着恒载分项系数的选择;再者,荷载分布的不同,影响着岩土结构设计是对荷载还是对岩土参数更为敏感,因此也就决定了相应的分项系数和更合适的分项系数组合。
In the European Geotechnical Code Eurocode7 direct method, the sub-coefficient of force, geotechnical parameter and reaction force under different conditions are given when the failure or over-deformation of foundation and structural members are verified. The combination of different sub-coefficient coefficients gives three Kind of design method. Case studies show that the results of these three design methods are quite discrete. In the design of eccentric compression strip foundation and cantilever retaining wall, the distribution of live load determines the choice of partial coefficient, and the size of eccentricity also affects the selection of partial load coefficient. In addition, the load distribution Different, affect the design of geotechnical structure is more sensitive to load or geotechnical parameters, thus also determines the corresponding sub-coefficient and the more appropriate sub-coefficient combination.