One of the main reasons for bridge failure is local scour at abutments. Laboratory experiments, under clear water condition, were carried out to investigate reduction around vertical abutment by adding one upstream spur dike. Sand with a median and standard deviation diameter equal 0.80 mm 2.173 respectively, formed bed material. Three different stages dikes varying sets as: 1) distances from (...

The depths and areas of the scour holes around spur dikes are most concerning issues regarding dike design. In this study, using a moving bed experiment, influence traditional rock-fill new permeable with different permeabilities on riverbed under unsteady flow was studied, spatial characteristics at heads were analyzed. results show that increases in permeability coefficient dike, depth area h...

The main purpose of this paper was to evaluate the performance of the triangular vanes located on the bed and their effect on the bed topography considering different flow conditions. For this purpose, tests were carried out on a straight flume for different flow conditions (five Froude numbers of 0.18, 0.20, 0.22, 0.24 and 0.26) by installing a series of triangular vanes at a space of 4Le (Le ...

Abstract Spur dikes are river training structures that have been extensively used worldwide for towards enhancing flood control and the stability of embankments riverbanks. However, scour around spur can be a major problem affecting their hydraulic performance. The precise computation temporal depth at is very important design economical safe dikes. This study focuses on experimentally assessin...