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Chapter 4.6 Overview of Seismic Hazard Studies in Tunis City

机译：第4.6章突尼斯市地震危险性研究概述

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Tunis City (roughly 30,000 inhabitants per km ) is developing in a subsiding sedimentary basin, 350 m deep, which is occupied by loose Quaternary deposits over a more rigid Eocene bedrock with a strong estimated impedance transition between the subsurface and the deep layers. Huge investment projects are initiated all around the edges of the Lac de Tunis and cover more than 25 millions square meters of buildings, towers, tourist complexes, bridges and yacht embankments. Due to this socio economic context, a comprehensive seismic risk analysis was conducted since a decade at the Tunis National School of Engineers with a special emphasis on site effects, liquefaction potential assessment and vulnerability studies of two pilot built areas located in the downtown zone and in the old Medina. All the collected and produced data are compiled in a geo-referenced database management system (GIS).rnThis chapter presents a broad coverage of the seismic site response analyses and liquefaction potential studies conducted in Tunis City by means of experimental techniques and numerical modelling.
机译：突尼斯市（每公里约有30,000居民）在一个深350 m的下陷沉积盆地中发育，该盆地被较刚性的始新世基岩上的松散的第四纪沉积所占据，在地下和深层之间有很强的估计阻抗跃迁。围绕突尼斯湖的边缘发起了巨大的投资项目，涉及超过2500万平方米的建筑物，塔楼，旅游综合体，桥梁和游艇路堤。由于这种社会经济背景，突尼斯国家工程学院自十年以来一直进行了全面的地震风险分析，重点是对位于市区和市区的两个试点建筑区的场地影响，液化潜力评估和脆弱性研究。老麦地那。所有收集和产生的数据都在地理参考数据库管理系统（GIS）中进行汇编。本章通过实验技术和数值建模方法，广泛介绍了在突尼斯市进行的地震现场响应分析和液化潜力研究。

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