ABSTRACT

The purpose of this paper is to present the assessment of soil liquefaction potential for the City of Chimbote, Perú, based on Grade-3 method proposed by TC-4 (ISSMFE, 1993). Results were compared with soil damages produced by the May 31, 1970 earthquake. Chimbote City is located on alluvial deposits of the Lacramarca River. Soil profiles are formed by clean and silty saturated sands with densities from loose to medium. A soil exploration program was undertaken with standard penetration and dutch cone testing throughout Chimbote. Besides, data from older borings were compiled in order to get a comprehensive set of soil data for the city. A map of the city of Chimbote showing the results of superficial damage caused by soil liquefaction is presented. A good comparison of liquefaction potential sites with the damage caused by the May 31, 1970 earthquake is obtained.