SINKING-STRESS ANALYSIS METHOD OF PILE DRAFT FOUNDATION ON MULTILAYERED GROUND USING GENERALIZATION EQUIVALENT CONVERSION THICKNESS-EQUIVALENT ELASTIC MODULUS

摘要

PROBLEM TO BE SOLVED: To solve the problem wherein a conventionally using numerical analysis method does not become a quantitatively highly accurate numerical analysis method, without imparting analytical display of a closed form of incorporating influence of rigidity including respective layers of the pile draft foundation ground into a sinking-stress calculation.;SOLUTION: An equivalent elastic analysis method is newly proposed as a calculation method on sinking-stress of the pile draft foundation ground. This analysis method, first of all, models as the equivalent composite ground by using an equivalent elastic modulus method, on the pile draft foundation ground constituted of a pile draft and the original ground. Next, the composite ground is modeled as the equivalent multilayered ground by using an equivalent conversion thickness method. As a result, a solution of a simple closed form applicable to basic design is presented. A difference in a structural characteristic between the pile draft reinforced ground and the non-reinforced ground, clarifies influence effected to a dynamic characteristic of instant sinking and compacted sinking of the multilayered ground.;COPYRIGHT: (C)2008,JPO&INPIT