MASS/RIGIDITY DISTRIBUTION SETUP METHOD FOR DETERMINING SOUNDNESS OF BUILDING AND MASS/RIGIDITY DISTRIBUTION SETUP SYSTEM FOR DETERMINING SOUNDNESS OF BUILDING

摘要

PROBLEM TO BE SOLVED: To provide a mass/rigidity distribution setup method and mass/rigidity distribution setup system for determining soundness of a building, capable of easily acquiring the mass/rigidity distribution as initial information of a building model for determining the soundness of the building, without requiring a special dynamic analysis model.;SOLUTION: A first natural period of a building is acquired by an eaves height of a building and a regression equation of an experimental equation. A mass of each story of the building is set to a fixed mass, and a first rigidity in the first natural period is calculated. When a top story of the building is 1 and a lowest story is N-times as much as a rigidity distribution factor of the top story, a trapezoidal-shaped first rigidity distribution is formed by multiplying the whole by the first rigidity, and a second natural period is calculated from a mass distribution and the first rigidity distribution. A second rigidity distribution is calculated by multiplying the first rigidity distribution by a value obtained by squaring a correction factor of the second natural period/first natural period. A third natural period and a stimulus function are calculated from the mass distribution and the second rigidity distribution. When the third natural period accords with the first natural period, the mass distribution and the second rigidity distribution are defined as the mass distribution and the rigidity distribution.;SELECTED DRAWING: Figure 9;COPYRIGHT: (C)2017,JPO&INPIT