Bridge rail-to-guardrail transitions are designed to shield unprotected ends of bridge rails, which are fixed-obstacle hazards. These structures should provide an effective transition between longitudinal barriers with different lateral stiffness and contain and redirect impacting vehicles without any contact with the rigid sections of the system. Recently, a full-scale crash test was performed...

A time domain method is presented to identify the moving loads on the bridge deck from measuring strains. The bridge deck is modelled as a rectangular orthotropic plate. The vehicle is modelled as two axle loads moving on the bridge deck. Like all inverse problems, the identification is an ill-posed problem, so a regularization technique is employed to stabilize the solution. This paper gives a...

This conference paper presents a critical analysis of the Forth Road Bridge, addressing factors such as aesthetics, strength, construction methods and geotechnical design, in addition to discussing the bridge’s durability issues and future. Loading and strength analyses are carried out to BS5400-2, issued in 2006, providing a pertinent consideration of the impact of the increased vehicle loads ...

In this work, a monorail vehicle-bridge coupling (VBC) model capable of accurately considering curve alignment and superelevation is established based on curvilinear moving coordinate system, to study the VBC vibration straddle curved girder bridge relevant factors influencing VBC. While taking Chongqing Jiao Xin line as an example, program compiled using Fortran, where reliability algorithm ve...

Objective: Pomegranate juice is inhibitor of CYP450 enzyme system such as CYP2C9 and CYP3A4. The objective of the present study was to determine the consequence of pomegranate fruit juice on the pharmacokinetics of oral hypoglycemic drug nateglinide in rats. Materials and Methods: This is a laboratory study to investigate drug-food interaction effects of Punica granatum fruit juice (3 ml) and ...

mathematical modeling of supply chain operations has proven to be one of the most complex tasks in the field of operations management and operations research. despite the abundance of several modeling proposals in the literature; for vast majority of them, no effective universal application is conceived. this issue renders the proposed mathematical models inapplicable due largely to the fact th...

─ This paper presents a voltage doubler in to a half bridge converter is derived for electric vehicle battery chargers. The proposed converter provides wide ZVS range, reduced circulating current and also voltage stress. Circulating current during the freewheeling phases of phase shift full bridge circuit are reset by the sum of LLC circuit output voltage and resonant capacitor voltage by achie...

In the identification of bridge damage in series deflection-affecting lines, noise signals due to axle coupling often occur. Removing these has become a key technique for effectively identifying damage. Taking main line overpass project Fuzhou City Fujian Province as an example, we collected deflection data by using HPON-X target-free deflectometer and used YOLOv3 algorithm deep learning vehicl...