Accession Number:

ADA070859

Title:

Drydock Certification.

Descriptive Note:

Technical note Oct 77-Oct 78,

Corporate Author:

CIVIL ENGINEERING LAB (NAVY) PORT HUENEME CA

Personal Author(s):

Report Date:

1979-03-01

Pagination or Media Count:

46.0

Abstract:

No procedure is presently defined for reliably measuring the foundation condition of existing graving drydocks. Because of unknown or misunderstood soil and groundwater flow conditions, drydocks have not always continued to perform as designed. This report presents the initial years effort of a longer term program to develop a systematic, defined evaluation routine for drydock foundations. The causes of a few previous drydock failures are discussed, and areas of potential difficulties are identified. Potential measuring devices and procedures for measurement are discussed briefly, and the need for advances in particular areas such as in void detection are noted. A brief review of available analytical computer models dealing with groundwater flow is presented. Those models considered most appropriate for treating the subsurface flow regime beneath a drydock have been selected for application. Attention is also directed toward available soil-structure interaction computer models, and some of their shortcomings or deficiencies are identified. This report singles out several critical categories for drydock analysis from a geotechnical viewpoint and recommends areas for further endeavor. Author

Subject Categories:

  • Marine Engineering
  • Structural Engineering and Building Technology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE