Evaluation of Seismic Ground-Motion and Estimation of Seismic Disaster by Using Array Earthquake Observation Network in Kyoto Valley

本研究旨在利用日本京都地区的阵列地震观测网，建立地震地震动评估和震害估算的方法。结果表明：京都河谷的地质构造和台网各观测站的土层结构对观测到的地震动特征有一定的影响。研究了结构系统和地震激励建模中重要的不确定参数，并将其建模为随机变量。研究了基于地面结构地震加速度观测的结构参数随机辨识和结构响应随机估计的解析方法。在1995年的孝古根-南部地震和2000年的鸟鸟根-西武地震中，大量建筑物遭到严重破坏。对木结构房屋的地震破坏进行了研究。特别是，在鸟取日野町，木材建筑的方法和技术被仔细检查。研究发现，木结构房屋的施工方法和地震地震动特性对木结构房屋的破坏有显著的影响。地震对建筑物破坏的预测和估计方法是在1995年孝古根-南部地震和2000年鸟鸟根-西武地震等以往地震灾害的基础上发展起来的。提出了木质房屋的易损性曲线。为了建立木质房屋地震损伤的预测和估计方法，结构中存在许多不确定性，特别是木质房屋。因此，需要对动态特性的不确定性进行观测和实验研究。

This study aims to construct methodologies in order to evaluate seismic ground-motions and to estimate seismic damages by making use of the array earthquake observation network in Kyoto area. The results obtained here are summarized as follows:The characteristics of observed seismic ground-motions are influenced by the geological structure of Kyoto valley and the structure of soil-layers at each observation station the array earthquake observation network.The important uncertain parameters in modeling structural systems and seismic excitations are investigated, and they are modeled as random variables. The analytical methods for stochastic identification of structural parameters and stochastic estimation of structural responses from observations of seismic accelerations on ground-structures are studied.In the 1995 Hyougoken-nanbu earthquake and 2000 Tottoriken-seibu earthquake, a large number of buildings were seriously damaged. The seismic damages of wood houses were investigated. In particular, the wood construction methods and techniques were closely examined in Hino-cho, Tottori. It is found that the damages of wood houses are influenced distinguishedly the construction methods of wood houses as well as the characteristics of seismic ground-motions.The prediction and estimation methods for the damages of buildings due to earthquakes were developed on the basis of past earthquake disasters such as the 1995 Hyougoken-nanbu earthquake and 2000 Tottoriken-seibu earthquake. The fragility curves for wood houses are proposed. To establish the prediction and estimation methods for seismic damages of wood houses, there are many uncertainties in structures, in particular, wood houses. Therefore the observation and experimental studies on uncertainties of dynamic properties are needed.