ANALYSIS OF BEARING CAPACITY FOR LOG-SPIRAL SLIDING SURFACES

概要

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A conventional and practically useful analytical method of bearing capacity is presented, assuming that sliding surface in the ground is composed of single log-spiral. Emphasis is placed on some advantages of the method, showing that bearing capacity factors can be expressed to some extent in analytical closed forms and that the method can readily be developed for evaluating bearing capacity of foundations under eccentric and inclined loads and that of deep foundations. Numerical results are compared with those from other theoretical and empirical formulae as well as experimental results, drawing some remarks ; 1) log-spiral solutions of bearing capacity factors are comparable to other theoretical values so far presented, 2) the present analysis confirms validity of superposition in the calculation of bearing capacity, 3) it also substantiates Meyerhof's hypothesis of the effective width of foundation for eccentric loading, and 4) log-spiral solutions for inclined loading show relatively good correspondence with practical formulae as well as experimental results.
社団法人地盤工学会の論文
1989-06-15