Contribuição ao estudo de propriedades geotécnicas em argilas moles na Baixada Santista Obra da sede administrativa da Bacia de Santos

Abstract

This paper presents a study of the geotechnical properties of soft clay in lowland Santista. About studied soft clay was carried out the implementation of the Administrative head office of the Santos Basin. The Santos Basin is a sedimentary basin located in the Brazilian continental shelf, covering an area of about 352 square kilometers until the elevation bathymetric 3000 m. A campaign of geotechnical investigations, divided into laboratory and field trials was performed. This research program was comprised of characterization tests, conventional consolidation tests (SIC), drained and undrained triaxial tests, subsurface knowledge through borehole (SPT), vane test (VST), dilatometer (DMT) and piezocone (CPTU). The geotechnical parameters obtained in different trials were analyzed and compared with the values reported in the literature for lowland Santista, where was noticeable obtainment of geotechnical parameters same between the trials and correspondent to the literature. The thickness of approximately 7 m of soft clay studied was found in the test results, as well as their level of pre-densification. Shear strength values under conditions not drained and oedométrico module presented is constant with depth.