Being earthquake motion forecasting calculation manner, and the earthquake motion forecasting calculation

摘要

PROBLEM TO BE SOLVED: To solve the problem that an earthquake movement of a period of approximately 0.1-10 seconds required for designing such structure as a building could not be accurately calculated since the influence of a heterogeneous fault destruction process, and scattering, reflection, transmission, bending, and amplification, and the like due to a complex foundation structure has been fully considered in the conventional earthquake movement-predicting/calculating method by a seismic center model and a foundation model.;SOLUTION: As a seismic center model, a seismic center function is obtained, where a dislocation surface 1 is divided into a plurality of small dislocations 2, and time and spatial randomness is given to each small dislocation 2. Additionally, as a foundation model, a model comprising a layer foundation 5 and a random foundation 6 is used, and a green function for indicating a response at an observation point 7 is obtained for each small dislocation 2. Additionally, based on the seismic center function and the green function obtained for each small dislocation 2, the earthquake movement at the observation point 7 due to each small dislocation is obtained, the total is obtained by considering the time difference according to the destruction process of the dislocation, and the earthquake movement at the observation point 7 due to the destruction process of the entire dislocation is obtained.;COPYRIGHT: (C)2003,JPO