Being design modulo of the pile foundation which consists of the design modulo null many post component which considers the function of distribution

摘要

PROBLEM TO BE SOLVED: To reflect frictional force working on the peripheral surface of a pile member, in calculation for stability and behavior of a foundation structure.;SOLUTION: Strength of distribution peripheral surface frictional force τ_Z and a range of distributed stratum are set in the same way as general setting of design external force to design a foundation. The effects of action (the action of τ_ZN) resisting the axial deformation of the whole foundation, action (the action of τ_Zϕ) resisting the flexural deformation of the whole foundation, and action (the action of τ_Zθ) resisting the member flexural deformation of each member are reflected in a balanced manner to the components of resultant force of each cross-sectional force of the whole foundation, and a solution of a displacement function of an obtained equation is used for a design calculation expression. The former two action (the action of τ_ZN and τ_Zϕ) out of three kinds of action of the distribution peripheral surface frictional force τ_Z has an effect of reducing the axial force of the pile. In the case of obtaining economical efficiency by reducing the axial force of the pile from the viewpoint of business, an expression reflecting the former two action is used to obtain a simple way of handling. These design methods are useful for the rational and economical design of the pile foundation.;COPYRIGHT: (C)2008,JPO&INPIT