非定常ランダムプロセスによる崩壊応答性状

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When the structures are strongly forced to deforme by any strong motion earthquakes, the restoring force should be decreasing abruptly or gradually after undergoing the maximum strength point, and lastly the structures would suffei into ultimate collupse. In such circumstances the restoring force characteristics would show various aspects in relation to the structural materials or the arrangements of aseismic elements, diagonal bracings or aseismic walls, as well as the state of composite stresses Although it is very difficult to describe precisely the restoring force characteristics in large deformation region, we could summarize roughly on reinforced concrete structures as follows, Deformation angle at the maximum resisting strength = 5〜20×10^<-3> Deformation angle at the ultimate collupse = 100〜150×10^<-3> These values should be recoghized as one of the observational results because the samples of the observation were too few to obtain the general results. Generally, the restoring force of the structure which consists of brittle aseismic elements would drop abruptly at the maximum resisting strength point, on the other hand, the restoring force of rather ductile structure would decreases gradually as the deformation increases. And such various aspects of the restoring force characteristics are to affect upon the failure processes as well as the earthquake responses. In this paper, the simply idealized model of the restoring force characteristics covering the overall wide range will be assumed for the brittle or ductile structures And the earth quake responses of one mass systems will be obtained, further, the response behaviours, the histogram of damages due to structural failure or entire collupse and the average and the standard deviation of the response displacement, will be discussed statistically by using the nonstationary random processes as the earthquake ground accelerations
近畿大学の論文
1975-12-01

非定常ランダムプロセスによる崩壊応答性状

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