Technical Framework of Performance-Based Design of Liquefaction Resistance

Abstract

AbstractSeismic liquefaction hazard is always a very challenging problem in earthquake geotechnical engineering and it is necessary to develop the performance-based technology of liquefaction hazard governance. In the paper, by investigating the characteristics of seismic liquefaction hazard and combined with the existing performance-based earthquake engineering (PBEE) thought, the connotation and key points of the performance-based liquefaction hazard governance are proposed, and a technical framework of performance-based design of liquefaction resistance (PBDLR) is constructed according to the technical system construction rules. The results indicate that the liquefaction hazard has its own characteristics in the target, scale, mechanism, mode, chain effect, treatment technology and uncertainty of the influencing factors, and its technical system of hazard governance needs special consideration. The presented PBDLR, which integrates advantages of both the advanced risk management theory and the existing performance-based earthquake engineering technology system, and the elements and structure consider the sociality of the target, the integrity of the function, the hierarchy of the composition, the relevance of elements and the completeness of technology, and may provide guidance and reference for the technology development of liquefaction hazard governance in earthquake geotechnical engineering.KeywordsLiquefaction hazardLiquefaction resistancePerformance-based designPBDLR