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年柯凯里地震期间观测到的强地面运动记录，我们开发了一个简单的数据库，便于实验室学生处理。利用所开发的数据库进行了两种分析。第一个主题是“相谱建模以模拟与设计谱反应加速度相适应的设计地震动”。在这一分析中，使用了群延迟时间的概念来模拟相位谱。利用集集地震时记录的地震运动，建立了预测成组均值和标准差的回归方程。在回归方程的基础上，利用卡尔曼滤波技术产生样本相谱，通过迭代方法修正傅立叶幅度，从而产生设计地震动，从而使相关的谱反应加速度与指定的…设计反应谱相一致第二个主题是“1999年土耳其科凯利地震期间阿塔扎里盆地周围强震的数值模拟”。科卡埃利地震对土耳其阿扎扎里的基础设施造成破坏性破坏。这意味着深部地面结构影响了强地面运动的分布，就像1995年日本南部地震时所观察到的那样。建立了盆地的地下结构模型，并用三维有限差分方法模拟了主震过程中的强地面运动。模拟结果表明，盆地边缘效应显著放大了阿扎扎里市中心的地面运动。第三，基于地震危险性分析的泛太平洋地区与东亚地区地震危险性水平的比较研究。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)的概念来确定几个现有结构的抗震加固的优先顺序，以确定现有结构的加固策略。较少

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