Development of High Reliability Microzonation Technique for Urban Earthquake Hazards Reduction

本研究的目标是开发一种高可靠性技术，用于减少城市地震危害的目标。主要结果在本研究中得到了满足，如下文所示。讨论是根据对微观化土壤放大的估计进行的，及其在空间微变化中的应用。交易的周期范围为1-10秒，并基于长周期微观测量。Soil site/rock site simultaneous observations were performed in the Valley of Kyoto and the San Francisco Bay Area。在这一基础上，土壤放大在细节中被讨论的地质和地质技术条件的影响，其对地质微型化的适用性得到了证实。在0.1 - 1秒的短周期范围内进行非线性土壤扩增，被讨论用模拟技术开发的工程模型。该模型通过对日本获得的垂直阵列数据的辅助进行了验证，并根据Loma Prieta地震记录良好。一个模拟模型已经开发出来，以产生强大的动机，考虑到源特性和路径效应。非线性土壤放大模型已被应用于京都地区的城市住房的损害评估。

The objective of this research was the development of a high-reliability technique of microzonation for the purpose of urban earthquake hazards reduction. The major results achieved in this research are summarized as follows.1. Discussion was made on the estimation of soil amplification of microseism and its application to seismic microzonation. It deals with a period range of 1-10 sec, and is based on long-period micro-tremor measurement. Soil site/rock site simultaneous observations were performed in the Valley of Kyoto and the San Francisco Bay Area. On this basis, effects of the geological and geotechnical conditions on the soil amplification were discussed in detail, and its applicability to seismic microzonーation was verified.2. Nonlinear soil amplification in a short period range of 0.1 - 1 sec was discussed by using an engineering model developed from a simulation technique. The model was verified with the aid of vertical array data obtained in Japan, as well as recordings from the Loma Prieta Earthquake.3. A simulation model was developed to generate strong motions considering source characteristics and path effects.4. The nonlinear soil amplification model was applied to the damage assessment of urban housings in Kyoto Region.