由于土体的非线性及计算模型不准确，常用的一些经典公式均存在着误差的现象，采用基于滑移线法的软件ABC计算了地基极限承载力，并与经验公式求得的结果进行比较，研究结果表明，采用叠加原理求得的极限承载力不一定始终偏保守。%Due to the nonlinearity of soil materials and the inaccuracy of the theoretical models and some errors in some classic formula, the pa-per adopts the software ABC based on the slip line method, calculates the ultimate bearing capacity of foundation base, compares the results of the formula with ones of other formula, and indicates by the result that the bearing capacity basd on the superposition method is not conservative.
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