Proceedings of Indian Geotechnical Conference December 22-24,2013, Roorkee COMPREHENSIVE SEISMIC MICROZONATION OF LUCKNOW CITY WITH DETAILED GEOTECHNICAL AND DEEP SITE RESPONSE STUDIES Sitharam, T. G. 1, Professor, Indian Institute of Science, Bangalore, Email:
[email protected] Abhishek Kumar2, Assistant Engineering Manager (Design), L & T Geostructure, Chennai, Email:
[email protected] Anbazhagan, P.3, Assistant Professor, Indian Institute of Science, Bangalore, Email:
[email protected] ABSTRACT: Earthquake induced damages can be manifold in case of poor construction practise and very high population density areas. Studies of seismic microzonation focuses on estimation of seismic hazard considering the seismotectonic province of the study area and also deals with quantification of induced effects such as ground shaking, site response and liquefaction. In this paper, the seismic microzonation of Lucknow in light of on-going seismicity of the Himalayan region and local seismicity of the Lucknow region considering the deeper lithology of Indo-Gangetic basin (IGB) is presented. Issues such as lack of regional ground motion prediction equation, subsoil lithology details, suitability of seismic site classification system for deep basins, site response for deep basins and ground motion selection for deep basins, liquefaction etc. have been attempted. INTRODUCTION seismic activity of the Himalayas since its origin The collision of Indian and Eurasian plate had and present increased seismicity can be found. given birth to the Himalayas. The entire collision Such a condition makes the areas surrounding in process was initiated about 50 million years ago and around the Himalayas seismically vulnerable. (during the Cenozoic era). The building up strains The inefficiency of the present seismic code in due to such collision had resulted in many of the capturing the regional seismicity has been devastating earthquakes of the history of the highlighted by many previous researchers.