Bridges constitute an expensive segment of construction projects; the optimization of their designs will affect their high cost. Segmental precast concrete bridges are one of the most commonly serviced bridges built for mid and long spans. Genetic algorithm is one of the most widely applied meta-heuristic algorithms due to its ability in optimizing cost. Next to providing cost optimization of t...

Introduction. The historic cable-stayed suspension bridge of the city Deir ez-Zor in Syria, which is an architectural monument, described. history its creation at beginning twentieth century and destruction during hostilities 2013 given. importance this for country as a whole indicated, was reason choice object research. Aim. study intended to contribute restoration (or) subsequent seismic stre...

in this study, the mf285 tractor engine vibrations resulting from the use of different combinations of biodiesel, bioethanol and diesel as fuel were studied. engine vibrations in three directions and three engine speeds: 1000, 1600 rpm 2000 and ten fuel level was measured. to investigate the influence of measured parameters on engine vibration of factorial design in a randomized complete block ...

An important eld in computational science and engineering is the simulation of the coupled problem of uid ow interacting with a moving structure. A common notation for this is uid-structure interaction (FSI) problems, which include both aeroelasticity and hydroe-lasticity. Herein we give an overview of results obtained within Fluid-Structure Interaction-Structural Design (FSI-SD) a project that...

Purpose – The potential threats of extreme events to highway bridges have received increased attention from government agencies, the engineering and construction communities, and the traveling public. These events include terrorist attacks as well as human-induced and natural hazards such as earthquakes, explosions, fires, floods, and hurricanes. To respond to the potential threats on highway b...

The true realization of the benefits vibration based structural health monitoring (VBSHM) in real-world applications is acquired through long-term continuous so that one can attain a detailed grasp behavior monitored structure. challenges VBSHM include: large volume accumulated data; effective extraction engineering information amid influences noise and uncertainties embedded maintaining contin...

Piers were important structural members between superstructure and foundation of bridge which designed to transfer resist the vertical loads horizontal (dead load structure, traffic loads, water pressure, ice, wind) foundation. The objective this study was evaluate effect number piers in transverse direction (horizontal distance or spacing) on static dynamic responses for two types bridges stru...

Abstract Updating a finite-element (FE) model using dynamic parameters obtained from field testing requires an adequate understanding of the variation such due to changes in environmental conditions. This paper presents experimental program study influence water–structure interaction response prestressed concrete segmental bridge with partially submerged piers artificial reservoir. The bridge, ...

Driven by the aesthetic pursuit of urban landscape, pedestrian bridges become longer, lighter, and slender, which may be susceptible to unacceptable vibrations induced human activities. This paper presented on-site vibration tests a bridge with very low height-to-span ratio (1/60). The characteristics dynamic responses were analyzed using environmental, heel-drop, walking tests. Then, verified ...