PEER-NGL project: Open source global database and model development for the next-generation of liquefaction assessment procedures

The Next-Generation Liquefaction (NGL) project was launched to (1) substantially improve the quality, transparency, and accessibility of case history data related to ground failure; (2) provide a coordinated framework for supporting studies to augment case history data for conditions important for applications but poorly represented in empirical databases; and (3) provide an open, collaborative process for model development in which developer teams have access to common resources and share ideas and results during model development. Work to date has focused on compiling high-value case histories, developing a database template, and planning for needed supporting studies. We describe the project motivation, explain and illustrate how data resources will be compiled and organized, summarize preliminary results from ongoing data collection, describe needed supporting studies, and review project status and next steps. •NGL will develop a community liquefaction database and flatfile.•The database contains objective data – field performance, soil conditions, and ground motions.•The flatfile will provide case history interpretations needed for model development.•NGL models will address liquefaction susceptibility, triggering, and effects.•High-value case histories are compiled from recent earthquakes in Japan and New Zealand.