Frame type breakwater

Abstract

A breakwater assembly comprises an upper slab ( 15 ) supported on columns ( 14, 21 ) that extend upwardly from a lower slab ( 13 ). A solid back wall ( 17 ) depends from one edge of the upper slab ( 15 ) while a front wall ( 16 ) with holes ( 18 ) therein depends from the other edge to exchange sea water freely between inner sea and outer sea.

1 . A breakwater assembly  10  comprising: 
 a base having a longitudinal axis for support on a sea bottom;  
 a plurality of columns extending upwardly from said base to upper ends;  
 an upper slab having longitudinal edges extending between first and second ends;  
 a front wall extending along and depending from one of said edges of said upper slab and having holes therein for the flow of sea water therethrough; and a back ball extending along and depending from the other edge of said upper slab.  
 
     
     
         2 . An assembly as set forth in  claim 1  wherein said columns are disposed in longitudinally aligned rows.  
     
     
         3 . An assembly as set forth in  claim 2  including a plurality of cross beams extending transversely to said longitudinal axis between said vertical columns.  
     
     
         4 . An assembly as set forth in  claim 1  wherein said columns include vertical columns disposed in longitudinally aligned rows and inclined columns on both longitudinal sides of said vertical columns and inclined outwardly and downwardly from said upper ends of said vertical columns to said base.  
     
     
         5 . An assembly as set forth in  claim 4  including a plurality of cross beams extending transversely to said longitudinal axis between and interconnecting said vertical and inclined columns.  
     
     
         6 . An assembly as set forth in  claim 5  wherein a pair of said vertical columns are aligned transversely to said longitudinal axis with a pair of oppositely inclined columns.  
     
     
         7 . An assembly as set forth in  claim 6  wherein said front and back walls are inclined outwardly and rest upon said inclined columns.  
     
     
         8 . An assembly as set forth in  claim 1  wherein said back wall is solid and devoid of openings therethrough.  
     
     
         9 . An assembly as set forth in  claim 1  wherein said front and back walls are inclined outwardly and downwardly from said edges of said upper slab.  
     
     
         10 . An assembly as set forth in  claim 1  wherein said front and back walls depend vertically downwardly from said edges of said upper slab.  
     
     
         11 . An assembly as set forth in  claim 1  wherein said base includes a lower slab supporting said columns  20  and a basic rubble stage supporting said lower slab, said basic rubble stage being under said lower slab.  
     
     
         12 . An assembly as set forth in  claim 1  including a concrete cap disposed on said upper slab.  
     
     
         13 . An assembly as set forth in  claim 1  wherein said base  12  includes a lower slab and said upper and lower slabs have longitudinal ends defining male and female keys for interlocking a plurality of assemblies in end to end relationship with one another.