剛性擁壁に作用する土圧解析

概要

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A lateral earth pressure problem on the retaining wall has been of great interest for the civil engineer since Coulomb published his wedge theory in 1776. Subsequently Rankine's plastic thoery was published in 1857. In the present century, the great difference between those classical theories and observed earth pressures has been clarified gradually by the experimental efforts of many investigators, i. e : Terzaghi (1920, 1934), Tshevotallioff et al (1953), Rowe and Perker (1965), James and Bransby (1970) and Matsuo et al (1978). So the development of a new theoretical analysis has been expected. But there are some difficulties in the theoretical analysis. The major difficulties is an expression for the mechanical model of the discontinuity of the boundary plane between the wall and the backfill. And another difficulty is an expression for the stress strain relationship of the material of backfill. From this point of view, a finite element analysis considering the discontinuity of the boundary plane and adopting anisotropic elasto-plastic model for the backfill is proposed. And the retaining wall problems (the earth pressures due to both the mode of wall movement and the backfill) are analysed. The results of the calculation are compared with the observed earth pressures reported by some investigators.
長崎大学工学部,Faculty of Engineering, Nagasaki Universityの論文