METHOD FOR DESIGNING COMPOSITE WALL

PROBLEM TO BE SOLVED: To enable highly reliable checking. SOLUTION: In a design method, after an earth retaining wall 10 is designed in step S10-S13, a composite wall 14 is designed in steps S14-S19. When the composite wall 14 is designed, a load in permanent erection is set in the step S14, and a structural calculation for the composite wall 14 is performed according to the setting of the load in the following step S15. Next, a gradual decrease rate of secondary sectional moment of inertia is set in the step S16; after that, the distribution of section force between the wall 10 and a permanently erected wall 12 is determined in the step S17; and the performance of the composite wall 14 is checked in the step S18. When the performance is checked in the step S18, a generated shear force Qs, which is assigned to the wall 10, and a generated shear force Qc, which is assigned to the wall 12, are computed according to the gradual decrease rate and the distribution of the section force; the composite wall 14 is separated into the walls 10 and 12; it is confirmed that the shear force Qs does not reach shearing strength Qsd of the wall 10; and it is confirmed that the shear force Qc does not reach shearing strength Qcd of the wall 12. COPYRIGHT: (C)2004,JPO