Methodology for liquefaction hazard studies: new tool and recent applications

✍ Scribed by O. Monge; D. Chassagneux; P. Mouroux

• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 565 KB
• Volume: 17
• Category: Article
• ISSN: 0267-7261
• DOI: 10.1016/s0267-7261(98)00013-x

✦ Synopsis

The BRGM Group, recently involved in several projects in which one of the aims was to assess the soil liquefaction hazard, has developed a new processing tool for such studies, applicable in various kinds of applications. The method is based on existing elements and consists in examining successively, in the deterministic manner, the qualitative and mechanical susceptibilities, the opportunity, the safety factor, the potentiality and the intensity. A parametric approach is also possible, in which the tool is used in reverse to give the characteristics required to achieve a target safety factor in a given seismic and hydrological context.

The case studies described in this paper concern a major project along communication routes, such as the new Mediterranean TGV high-speed rail line, charts and specifications for remedial works and various levels of seismic microzonations (Nice, in the French Riviera, and Fort-de-France, in French West Indies).