Failure of the bridges due to local scour around their piers can cause serious life losses and property damages and create significant environmental problems. In this experimental study, scour hole geometry around circular bridge piers were investigated. The experiments were carried out in a rectangular flume 80 cm wide, 18.6 m long and 75 cm high by using uniform sediment with a median diamete...

Abstract Scouring is a complex process dependent on several factors, and local scour more than general scour. This study was an attempt to predict round bridge piers based in the water stream. Three obstacle shapes were used – circular, round-nosed, elliptical as they are predominant hydraulic structures like piers. For each shape, depth measured around periphery for five gradually increasing d...

Based on a large span continuous rigid frame bridge in Chongqing of China, the main pier vertical displacement and deviation, the bridge deck alignment and the expansion joint deformation are analytically researched during operation. Firstly, the monitoring content and method of the large span continuous rigid frame bridge are clearly stated. Secondly, by finite element software Midas Civil, th...

In this study, the analysis of transverse vibrations of rectangular plate with circular central hole with different boundary conditions is studied and the natural frequencies and natural modes of a rectangular plate with circular hole have been obtained. To solve the problem, it is necessary to use both Cartesian and polar coordinate system. The complexity of the method is to apply an appropria...

In this paper, the cooling performance of water-cooled heat sinks for heat dissipation from electronic components is investigated numerically. Computational Fluid Dynamics (CFD) simulations are carried out to study the rectangular and circular cross-sectional shaped heat sinks. The sectional geometry of channels affects the flow and heat transfer characteristics of minichannel heat sinks. T...

By considering the near-field vertical seismic spectrum and calculating change in contact force between main beam pier, possible separation condition of a bridge is deduced. extreme value pier–beam longitudinal deformation pier under structural separation, influence on failure determined. Separation increases risk compression, bending, shear, different times lead to responses from first mode di...