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所在平台: Coursera |
课程主页: https://www.coursera.org/learn/seismology-to-earthquakes
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课程名称： 从地震学到抗震工程 课程概述：该课程涵盖了地球结构、通过断层产生地震和地震波的机制、土壤、基础及结构的地震响应，以及地震风险等内容。课程目标是针对对工程地震学、抗震工程或地震风险感兴趣的本科生、研究生和专业人士。课程涉及多个技术领域，包括岩土力学、土壤动力学、结构动力学以及动态土体-结构相互作用。课程设置了多种类型的课程，包括定期讲解现象或基本原理的课程、通过简单实验（如断层运动、液化、共振柱试验、振动台试验）来说明概念的实验课，以及聚焦于不同研究领域的高级主题（如磁地球、火星地震性、地震传感器、概率方法）的研究课。通过多个测验以及三个迷你项目，学员将能够检验自己的知识水平和对各个主题的理解。 课程大纲： - **介绍**：该部分为课程总体介绍。 - **第1周-地震性与断层**：学习地球结构、板块构造及地壳中断层的行为，探讨地震波的辐射。研究地球及火星的地震性，并最终解释断层的控制及地球的磁性特征。 - **第2周-地震波与地面运动**：通过实际观察和理论解释展示各种类型的地震波，讨论其在异质地质结构中的传播与放大，并提出对场地特征化的应用。 - **第3周-土壤与结构的地震响应**：首先分析地震土壤响应，随后将简化的土壤响应转化为响应谱以便于抗震设计。讨论结构的地震响应，包括特征模式、模式叠加及模式重组合，并介绍地震隔离及结构的现场动态特性。 - **第4周-复杂结构与非线性**：首先介绍动态土体-结构相互作用和土体-基础-结构相互作用，然后分析结构的典型非线性行为。最后通过简化分析（如推覆分析）和时间历史非线性分析讨论结构的地震响应。 - **第5周-地震风险**：首先介绍脆弱性和损伤评估，并通过实地的砖石结构和振动台上的混凝土结构进行说明。讨论不确定性的影响，以推导脆弱性曲线，最终解释灾难与损失模型。
Name:Introduction
Description:
Name:Week 1 - Seismicity and faults
Description:The first week allows to discover the Earth structure, the plate tectonics, the behaviour of faults in the crust and the radiation of seismic waves. The seismicity of the Earth is studied and that of Mars is shown as well! The control of faults and the magnetic properties of the Earth are finally explained.
Name:Week 2 - Seismic waves and ground motion
Description:Various types of seismic waves are presented through both actual observations and theoretical interpretation. Their propagation and amplification in heterogeneous geological structures are discussed (soil layers, alluvial basins). The application to site characterization is finally proposed.
Name:Week 3 - Seismic response of soil and structures
Description:The seismic soil response is analyzed first. The simplified soil response is then converted into a so-called response spectrum for sake of seismic design. The seismic response of structures is discussed through eigenmodes, modal superposition and modal recombination. Seismic isolation and in situ dynamic characterization of structures is also presented.
Name:Week 4 - Complex structures and non linearities
Description:Dynamic Soil-Structure Interaction and Soil-Foundation-Structure Interaction are presented first. Typical nonlinear behaviours of structures are then analyzed. The seismic response of structures is finally discussed through simplified (e.g. push-over) and time history nonlinear analyses.
Name:Week 5 - Seismic risk
Description:Vulnerability and damage assessment are introduced first. They are illustrated for masonry structures in the field and concrete structures on shaking tables. The effect of uncertainties is then discussed in order to derive fragility curves. Finally catastrophe and loss models are explained.
This course ranges from the earth structure, the generation of earthquakes and seismic waves by faults to the seismic response of soils, foundations and structures as well as seismic risk. It is consequently aimed at undergraduates, graduates and professionals interested in engineering seismology, earthquake engineering or seismic risk. It investigates various technical fields: rock mechanics, soil dynamics, structural dynamics and dynamic soil-structure interaction. Various types of sessions are proposed: regular sessions describing a phenomenon or explaining its basic principles, lab sessions illustrating concepts through simple experiments (fault motion, liquefaction, resonant column tests, shaking table tests) and research topics focusing on advanced topics from various research fields (e.g. magnet-Earth, seismicity of Mars, seismic sensors, probabilistic approaches). Several quizzes, as well as 3 mini-projects, will allow you to check your knowledge and assess your understanding of the various topics.
