LIQUEFACTION POTENTIAL AT AN OCEAN OUTFALL IN PUERTO RICO

An ocean outfall is currently being designed (1977) that will extend 2600 feet into the Aguadilla Bay, at the northwestern corner of Puerto Rico. The proposed outfall will form the terminus of the Aquada-Aquadilla waste-water system. The subsurface soils beneath the sea floor, along some parts of the alignment, consist of fine sands which may be susceptible to both earthquake induced and ocean wave induced liquefaction under certain conditions. The design earthquake for the outfall is an MM Intensity VII to VIII event, and the maximum wave height for the design hurricane is as high as 50 feet. This paper presents some of the soil dynamic considerations used in evaluating liquefaction potential beneath this four-foot diameter prestressed concrete pipe outfall. It was concluded after performing simplified analyses, that, liquefaction was not a potential problem and hence no remedial measures were recommended. /Author/

Media Info

  • Features: Figures; References;
  • Pagination: p. 685-703

Subject/Index Terms

Filing Info

  • Accession Number: 00179774
  • Record Type: Publication
  • Report/Paper Numbers: Proceeding
  • Files: TRIS
  • Created Date: Oct 12 1978 12:00AM