Elastic-Plastic Earthquake Response of Soil-Building Systems.

摘要

Effects of plastic soil deformation on the earthquake response of buildings using elastic-plastic finite element models are presented. Non-uniform support excitations were generated statistically to reflect the soil-layer formation of downtown Tokyo. The lumped mass model of the building is attached through a massless rigid mat to the soil which is represented by a set of finite elements arranged in three rows,representing two typical soil layers of downtown Tokyo. Numerical results of elastic-plastic analyses for 3,9and 18story buildings with and without basements were compared with those of the corresponding elastic systems as well as buildings with the base fixed at the ground level. (Author)