... caisson excavation depth flow rate caisson foundation local scour depth upstream oil & gas water depth scour pit open caisson maximum scour depth scour depth topography water flow foundation pit scour topography flow velocity sediment foundation caisson shape streamline...

..., 2016). Zhao, Shi, Qu, Dong and Zhang (2018) investigate the local scour around submarine piggyback pipeline in the steady flow experimentally and numerically. It is found that as the inflow Re number increases, both maximum scour depth and the length of the scour hole increase at the same time. After...

.... The numerical results indicated that the maximum scour depths under the vibrating pipelines are much larger than those under the fixed pipelines. Strong dynamic interaction between the two pipelines is observed. The shadowing effect of the upstream pipeline on the downstream pipeline is significant. The effects...

... and scour protections and examined their effect and the mechanism of a dike failure. maximum scour depth overflow mesh size slope structure coastal dike upstream oil & gas liquefaction scour profile sand bed earthquake countermeasure scour hole experiment tsunami geogrid scour...

... could occur due to tsunami under the condition that amplitude of changes in sea level was large and the drawdown rapidly occurred. liquefaction scour hole maximum scour depth tsunami initial stage scour depth soil bed hydraulic gradient effective stress experiment downstream part...

... flow or current alone was originally studied for the scour protection design of the bridge piers in the river. It has been investigated extensively from various aspects, e.g. scour mechanism, time scale, prediction of the maximum scour depth, and preventive measures for scour., e.g. Raudkivi and Ettema...

... prediction methods of coastal erosion and scour. This paper proposes a numerical model for the topographical change due to tsunami. Moreover, prediction methods on the maximum scour depth due to tsunami backflow and its position in front of the seawall are also proposed. INTRODUCTION As typical examples...

... are separately simulated in this study. In this paper, the maximum scour depth and the potential impact scour area around the jacket type offshore wind turbine foundation is analyzed from the result of the mobile bed experiment. Based on the analysis from the former NSWB experimental results, the suitable scour...

... maximum scour depth Experimental Study on Scour Protective Equipment around Pile of Bridge under Wave and Current Qiang Li Chunhua Liu Department of Civil Engineering, Zhejiang Ocean University. Zhoushan, Zhejiang, China Haiming Dong Zhoushan Headquarters of Island-linking Project. Zhoushan, Zhejiang...

... of prediction methods for erosion and scour by tsunami. In the model, the sediment transport due to tsunami is simulated by using user-friendly prediction methods, and considering bed load and suspended load transport. Furthermore, prediction methods on the maximum scour depth and its position at the beach...

... of the survey using a boat. The results indicate that the survey using a boat is effective in evaluating the maximum scour depth and the profiling scour monitoring using a new system would be more cost- effective than the previous scour monitoring system if the pier foundation consist of many piles with large...

... the understanding of scour processes around spud cans. settlement obstruction height upstream oil & gas sweeney spud assessment penetration depth gravel maximum scour depth seabed material scour assessment schematisation scour development scour subsea system wave condition wl delft...

... ABSTRACT Ice scouring is a phenomenon which occurs when moves in contact with seabed. It has been reported to have caused damage to communication cables and water intake pipelines. Therefore, it will be very important to estimate rational maximum scour depth due to complicate behavior of ice...

... without using any sediment transport formula, which usually contains many empirical parameters or constants. The maximum scour depth and the upstream part of the scour hole predicted by the model compare well with the experimental data published in the literature. INTRODUCTION Many offshore...

... a ships propeller. Qurrain (1994) proposed an equation that would allow the maximum depth of scour, at any time, to be calculated for a propeller operating in the absence of a rudder. This equation took the form = 1 where G u is the maximum scour depth in mm at any time t, in seconds. The other...