Factor analysis of damage to infrastructure occurred by the 1999 Chi-Chi earthquake in Taiwan and its international comparison

通过收集 1999 年台湾集集地震和 1999 年科贾埃利地震期间观测到的强烈地面震动记录，我们开发了一个简单的数据库，该数据库易于实验室学生使用。使用开发的数据库进行了两种分析。第一个主题是“相位谱建模，以模拟与设计谱响应加速度兼容的设计地面运动”。在此分析中，使用群延迟时间的概念来对相位谱进行建模。利用集集地震期间记录的地震运动，建立了预测组平均值和标准差的回归方程。基于回归方程并使用卡尔曼滤波技术生成样本相位谱，通过迭代方法修改傅立叶振幅，可以生成设计地震动，使得相关的谱响应加速度与抗震设计规范中规定的设计响应谱兼容。第二个主题是“1999年土耳其科贾埃利地震期间阿达帕扎里盆地周围强运动的数值模拟”。科贾埃利地震对土耳其阿达帕扎里的基础设施造成破坏性破坏。这意味着深层地面结构影响了强烈地面运动的分布，正如 1995 年兵库县南部地震期间所观察到的那样。提出了盆地地下结构模型，并利用三维有限差分方法模拟了主震期间的强烈地震动。模拟结果表明，盆地边缘效应显着放大了阿达帕扎里市中心的地面运动。考虑到地表非线性行为，开发了一种根据地面观测地震运动估计输入地震运动时程的方法。第三个主题是基于地震危险性分析的泛太平洋和东亚地区地震危险性水平的比较。在第四个主题中，我们开发了一种方法，使用“生命周期成本（LCC）”的概念来优先考虑多个现有结构的抗震加固，以决定现有结构的加固策略。较少的

By collecting the strong ground motion records observed during the 1999 Chi-Chi Taiwan earthquake as well as the 1999 Kocaeli earthquake we developed a simple database which is easy treat for laboratory students. Using the developed database two kind of analyses were conducted. The first topic is "Modeling of phase spectrum to simulate design ground motions compatible with the design spectral response acceleration". In this analysis the concept of group delay time is used to model the phase spectrum. The regression equations to predict the mean and standard deviation of group were developed by using recorded earthquake motions during the Chi-Chi earthquake. Based on the regression equation and using Kalman filtering technique a sample phase spectrum is generated from which the design ground motion can be generated by the iteration method to modify the Fourier amplitude, such that the associated spectral response acceleration is compatible with the design response spectrum as specified … More in the seismic design code.The second topic is "Numerical simulation of strong motion around Adapazari basin during the 1999 Kocaeli, Turkey earthquake". The Kocaeli earthquake cased destructive damage to infrastructure in Adapazari, Turkey. This implies that the deep ground structure affected the distribution of strong ground motions, as being observed during the 1995 Hyogoken Nambu earthquake. We proposed the subsurface structure model of the basin, and simulated the strong ground motions during the main shock using 3D finite-difference methods. The results of the simulation showed that the ground motions at the downtown of Adapazari were significantly amplified by the basin-edge effect. A method to estimate the time history of input earthquake motion from the observed earthquake motion at ground surface was developed, taking into, account of nonlinear behavior of surface ground.The third topic is the comparison of the seismic hazard level of Pan-pacific and East Asia region based on seismic hazard analysis. In the forth topic we developed a methodology to prioritize the seismic reinforcement of several existing structures using the concept of 'Life Cycle Cost (LCC)' to decide a strategy for reinforcement of existing, structures. Less