Repair, Evaluation, Maintenance, and Rehabilitation Research Program: Case Histories of Corps Breakwater and Jetty Structures. Report 9. Southwestern Division

摘要

This report is ninth in a series of case histories of US Army Corps of Engineers (Corps) breakwater and jetty structures at nine Corps divisions. Herein, case histories are presented for 12 breakwater and jetty structures located within the US Army Engineer Division, Southwestern (SWD), along the Texas gulf coast. Presently, there are 4 breakwaters and 19 jetties managed by SWD with a cumulative length over 176,000 ft. These structures are predominantly of rubble-mound construction. Concrete caps have been used on the projects, but since 1960 a fairly consistent cross section of stone only has been used on new and existing projects. The peak period of construction occurred from 1962 to 1966 when three projects were completed and six received major rehabilitations. Although wave forces may be the principal cause of structure deterioration, scour and undermining also appear to be significant. (fr)