Seismic Stability Analysis of Saturated and Unsaturated Soil Slopes Using Permanent Displacement

Table 2

Slope codes of the earthquake-prone countries.

Nation	Codes	Evaluation methods	Evaluation indictors
China	“Technical code for building slope engineering” (GB50330-2013)	Quasi-static method [22, 23]	Safety factor
	“Design code for engineered slopes in water resources and hydropower projects” (SL386-2007)	Quasi-static method	Safety factor
	“Specifications for design of highway Subgrades” (JTG D30-2004)	Quasi-static method	Safety factor
	“Code for seismic design of railway engineering” (GB50111-2006)	Quasi-static method	Safety factor
	“Code for design on subgrade of railway” (TB10001-2005)	Quasi-static method	Safety factor
	“Code for design of high speed railway” (TB10621-2009)	Quasi-static method	Safety factor
Japan	“Design standards for railway structures”	Quasi-static method and Newmark method	Safety factor and permanent displacement
European countries	Eurocode 7: geotechnical design	Quasi-static method	Safety factor
California in the United States	California Geological Survey’s guidelines (2008)	Quasi-static method	Safety factor