The efficiency of usage of cantilever and buttress retaining walls of guiding and berthing structures of locks on the basis of materials consumption
When designing, dimensions of locks and located next to them guiding and berthing structures should be taken as ones which could provide their durability. The aim of research was determination of the area of efficient usage of cantilever and buttress walls as guiding and berthing structures of ship locks. As methods of investigations, calculations of retaining walls were fulfilled using a software complex «LIRA-SAPR2014» for different kinds of soil foundation and backfill. When determining the effectiveness of retain walls there were considered guiding structures in whole as they have a complex form in the plan, and for mooring structures calculations were fulfilled for a section of the 20 m length. As a result of calculations it was found that consumption and cost of materials, concrete and armature were the smallest when using cantilever retaining walls.With the growth of the height the difference only increases: at Н = 6 m it is 1.14 mln rbls for guiding facilities, for mooring structures - 0.36 mln rbls; at Н = 8 m for guiding facilities - 2,63 mln rbls, for mooring structures - 0.78 mln rbls; at Н = 10 m - correspondingly 8.0 mln rbls and 2.25 mln rbls. Based on the conducted investigations the following conclusions were drawn: at the height of the upstream side of retaining stands of 3.7...4.0 m as guiding and mooring structures it is recommended to use cantilever retaining walls as they are more effective under these parameters. At a bigger height buttress retaining walls are more effective.