The scope of application of this code is limited to some of the economically most important structures in the Port of Los Angeles. Marine structures which are subject to different technical parameters (piers), to different operational requirements (dolphins) and/or are subject to different jurisdiction (crude oil loading and unloading platforms, wharves supporting buildings that have a substant...

Mining activities can endanger the stability of hydraulic structures. Numerical modeling local scouring around hydrodynamic and circular bridge pile groups, due to action clear water conditions via non-cohesive sediment, was performed using a computational fluid dynamics (CFD) model, large eddy simulation (LES) turbulence van Rijn sedimentary model with FLOW-3D software. The groups were positio...

Hydroboration of the electron poor phosphine (1-propenyl)P(C(6)F(5))(2) with Piers' borane [HB(C(6)F(5))(2)] gave the geminal frustrated Lewis pair (C(6)F(5))(2)P-CH(Et)-B(C(6)F(5))(2). It undergoes 1,2-addition reactions to an alkene and an alkyne and to the C=N bond of an isocyanate. With mesityl azide it undergoes a 1,3-addition reaction.

Bridges crossing rivers wider than 50 m are typically supported by piers. In a mobile riverbed, scour occurs around bridge piers, and it is the main cause of collapses worldwide, especially during floods. While pier has been extensively studied, there still lack measuring systems for monitoring in field. this paper, we present existing devices measurement analyze their comparative advantages di...

Rocking self-centering (RSC) bridge piers were proposed based on the seismic resilience design theory, pushing development of sustainability. To develop a method for RSC piers, clear understanding their behavior under earthquakes is essential. This study analyzed whole lateral force–displacement response taking into account both rotational and flexural deformation, which resulted in clearer act...

Abstract A computational fluid dynamics numerical model addressed the problem of local scouring and deposition calculation for non-cohesive sediment clear water conditions near single double cylindrical piers. The results piers correlate very well with physical model's while are higher than case pier, especially when large-eddy turbulence model, van Rijn bed-load transport equation, fine mesh s...

performance of structures during recent earthquakes shows that the effect of vertical component of earthquake (vce) could be considered as one of the main causes of bridges collapse. in most of bridge design codes, for seismic analysis of bridges, vce is not taken into account or a distinguished method isn’t presented for assessment of vce. in the present work, the effect of vce on two existing...

Scour around non-circular cylinders has seldom been studied before. This paper aims to numerically investigate the flow behaviour and evolution of local scour two single square-shaped piers with 90 ° (square pier) 45 (diamond orientation angles under steady-current live-bed conditions. For this purpose, a coupled approach between hydrodynamic morphodynamic model is developed validated against e...

Cyclopentadienyl (Cp)-coordinated cationic Si(II) (1) and Ge(II) compounds (2) are a new class of catalysts for various transformations in organosilicon chemistry. This review demonstrates that these effectively catalyze technically important reactions, such as the hydrosilylation carbon-carbon multiple bonds types siloxane-coupling e.g., Piers-Rubinsztajn reaction oxidative siloxane coupling r...