Earthquake Simulation in Geotechnical Engineering
【摘要】：正 In recent years, significant progress has been made in earthquake simulation techniques in geotech-nical engineering. Large shaking tables, some with two - dimensional shaking capabilities, have been designed and installed on several centrifuges around the world. New devices that can make in - flight measurements of soil properties and response have also been developed. Similarly, field mobile shakers with enough energy input to cause liquefaction of in - situ soils have been used. For 1g shaking table testing, several new facilities have been built with sizes large enough to conduct realistic soil tests. In numerical modeling, new computing axles with enhanced constitutive models and numerical integration schemes have been developed. With the availability of more powerful computers, complex simulations are now possible. In the USA, the implementation of the NSF Network for Earthquake Engineering Simulation (NEES) program will provide in a few years powerful and easily accessible earthquake simulation facilities for geotechnical engineers.This paper summarizes some of findings of a NSF International Workshop on Earthquake Simulation in Geotechnical Engineering held in Cleveland in November 2001, which brought together a group of international experts whose goals were to evaluate the current state - of - the - art and envisage new research opportunities. The specific objectives of the workshop were: (1) to examine the latest developments in earthquake simulation techniques including details of their capabilities and limitations; (2) to identify research topics utilizing these techniques; (3) to develop ideas for collaborative research; (4) to discuss the various research cultures that encourage collaboration; and (5) to initiate joint research projects.