Abstract
A broader overview of the role of geotechnics in earthquake engineering is given, and a set of practical examples of the quantification of geotechnical seismic indicators for construction of individual buildings is provided. An overview of oncoming changes to the current design standards for evaluating the effect the soil has on buildings in earthquake conditions is also given. Considering the level of seismic activity in Croatia, the need for adopting a comprehensive approach to seismic microzoning is emphasized, which involves a whole array of indicators, from lithological, engineering geological, and hydrogeological properties, and position of active faults, to identification of unstable slopes and zones of pronounced liquefaction potential, for which extensive geophysical and geotechnical investigations are required.
Highlights
An earthquake is a result of release of a huge quantity of energy due to movement of plates in the Earth’s crust, occurring at considerable depths and constituting a geohazard of great destructive power, with severe consequences to people and structures on the ground surface [1]
An integrated approach to deal with the earthquake, its causes and its consequences, is generally inexistent, the estimation of earthquake hazard and its effect on structures, including its geotechnical part, is an obligatory portion of civil engineering design that is in Croatia covered by Eurocode 8 [8]
A comprehensive overview of the role of geotechnics in earthquake engineering is presented in the paper through a number of practical examples involving evaluation of the influence of physicomechanical properties of soil on the behaviour of seismic excitation, including the influence of excitation on the soil liquefaction, landsliding, and other forms of instability and exceedance of limit states of geotechnical structures
Summary
An earthquake is a result of release of a huge quantity of energy due to movement of plates in the Earth’s crust, occurring at considerable depths and constituting a geohazard of great destructive power, with severe consequences to people and structures on the ground surface [1]. An integrated approach to deal with the earthquake, its causes and its consequences, is generally inexistent, the estimation of earthquake hazard and its effect on structures, including its geotechnical part, is an obligatory portion of civil engineering design that is in Croatia covered by Eurocode 8 [8] In this standard, just like in earlier seismic regulations (especially for highly significant structures with pronounced safety aspects, such as power facilities like nuclear power plants or LNG terminals, large dams or bridges), the need for further development of seismic design criteria properly suited to individual localities is emphasized, and it is specified that these criteria must take into account local geology, seismicity, geotechnical conditions, and nature of the project. -- occurrence of dynamic instabilities of soil (liquefaction) and excessive settlement b) global stability of the location: presence of active faults and unstable slopes c) increase of earth pressure imposed on foundations, support structures, earth-filled structures and buried structures due to earthquake action
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of the Croatian Association of Civil Engineers
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
