Extensive numerical and analytical studies exist that focus on the scours around bridge piers with different cross-sections. However, addressing scour piles are rather limited not conclusive. Therefore, most efficient cross-section reducing local a pile group is experimentally examined herein. Accordingly, comparative scouring of three shapes, namely, circular, rectangular lenticular, investiga...

In jiangxi province, china, a new river will be excavated in the southern part of Qinglan Lake to drainage main flow Fuhe River into improve local flood prevention and navigation problems. A physic model is established analyze changes characteristics under different engineering schemes. The research shows that water level decreases 1.91m, velocity upstream increases 4.83 m/s, P=5% flood, which ...

Local scour in a sediment bed varies depending on the type, size and shape of hydraulic structures, properties approach flow particles. Published studies are hitherto confined primarily to empirical experiments based particular types structure there is almost no comparison amongst different structures. This study aims provide an attempt unify clear-water new length scale, which proposed charact...

A Chitosan/sucrose/polyurethane composite bio-membrane was prepared by the facile drop coating method. The composite bio-membrane had a porous spongy structure composed of a physical mixing of each component. The water absorbability of the composite bio-membrane increased with increasing chitosan and sucrose contents. Furthermore, the composite bio-membrane with immobilized Aspergillus sojae ex...

In offshore structures, most of failures are caused by the lack of sufficient piles strength. Scour phenomena affects the load transition and the pile strength. The necessity of the consideration of scouring phenomena amplifies when the scour depth becomes remarkable, which can endanger the jacket stability. In this paper, a new method is used to consider the pile scouring using nonlinear pusho...

Although tidal marshes are known for their coastal defense function during storm surges, the impact of extreme wave forcing on marsh development is poorly understood. Seedling survival in first season after germination, which may involve exposure to events, crucial natural establishment and human restoration marshes. We hypothesize that species-specific plant traits plays a significant role see...