疏桩圆形基础下地基极限承载力提高的理论解——桩－土－圆形承台共同作用中桩的遮拦加强作用

The Theory of the Ultimate Bearing Capacity Increment of Soil under A Circular Cap with Sparse Piles The Resist and Strengthenning Action of Piles in Piles Soil Circlular Cap Interaction

在圆形基础地基极限承载力的别列赞策夫（ЪерезанцевВ．Г．）课题的基础上，引用滑动土体绕过桩时所遇到的极限阻滑力的理论解答，导出了复合桩基圆形承台下地基土极限承载力由于桩的遮拦加强作用而提高的理论公式，并给出相应的计算图表。算例表明了理论解的用法。

Based on Berezantzer's question for the ultimate bearing capacity of circular foundation and quoting from the theory answer for the ultimate resistance to the soil sliding around a pile,the theory formula of the ultimate bearing capacity increment of the soil under a strip cap with sparse piles due to the resist and strengthenning action of piles is deduced in this paper.The use of the theory is shown in some example.And some question related to the modification and conditionality of the theory formula is discussed.