The finite element model of suspension bridge was established according to the actual engineering in Southwest area China. In order simulate random ground motion accurately and efficiently, orthogonal function modeling method based on Priestley evolution spectrum theory is adopted. dimensionality reduction simulation realized, simulated samples are input into carry out time history analysis. Fi...

the national bridge stock of iran consists of about 330,000 bridges, of which around 50% are older than 30 years. since 2010, iran road maintenance & transportation organization has started implementing a comprehensive bridge management system in order to manage this aged stock efficiently. to predict future conditions of bridge stock, a heuristic numerical method is presented. this methodology...

Base isolators and fluid viscous dampers are viable protective devices that have been commonly considered in the seismic protection of civil engineering structures. However, optimal design these remains a tedious iterative undertaking due to uncertainty ground motions, nonlinear behavior structure, its change dynamic characteristics (i.e., effective stiffness damping ratio) under each new desig...

The post-grouting technology can effectively improve the bearing capacity and reliability of foundation piles, it is great academic economic significance to evaluate effect post-grouting. However, in general, evaluation slurry on piles still relatively single, most researchers only test improvement characteristics but there are few research results distribution state consolidation range reinfor...

To explore the different influence of traveling wave effect on isolated and non-isolated arch bridge, multi-span bridges models are established respectively, three measured seismic waves were selected, under eight kinds apparent velocities multi-point consistent excitations, structural responses two models, including internal force response, rib velocity, pier’s bridge deck acceleration, shear ...

Rib shear connectors are gaining increasingly attention in the field of composite constructions. Especially bridge constructions, rib offer many advantages compared to conventional such as headed studs. In order describe load-bearing behaviour under cyclic loading, successively increasing slip resulting from loading must be taken into account. The latter leads growth relative displacements alon...

Induction motors are popularly used in various applications because of the proposed modest construction, substantiated process, and limited size specific power. The traditional AC traction drives experimentally analyzed. There is a high circulating current due to Common-Mode Voltage (CMV). Circulating Bearing Current (CBC) major problem conventional two-level voltage source inverter fed paralle...

Abstract In many countries, the bridge infrastructure suffers from damaged bridges that need to be rehabilitated or replaced. This means state institutions responsible for this must make extensive investments. Are there other ways address problems caused by damaging effects of de-icing agents, fatigue due high vehicle loads and frequencies on load side lack strength of, example, orthotropic dec...

Oscillators are kernel components of electrical and electronic circuits. Discussion of history, mechanisms and design based on Barkhausens observation. Discussion of a Wien Bridge oscillator based on the question: Why does this circuit oscillate ?

This study aims to analyze the bearing capacity of foundation permit for Sungai Pangi bridge. The well will be analyzed in form carrying which compared with load working on it. Bridge Merangin Regency is a concrete bridge that included class C bridge, total length 41,1 meters. span at point under consideration 15 meters long. maximum acting 4332,09 kN. uses type varying depths. analysis calcula...