With the development of new materials and advanced structural analysis, alongside increasing aesthetic requirements, recent years have witnessed a trend toward longer, taller, lighter footbridges. Different from vehicular bridges, footbridges carry relatively small service loads are more susceptible to vibrations, due their lower stiffness, damping, modal mass. More often than not, vibration se...

Introduction: The aim of this study was to evaluate the effect of bridge orientation in casting machine on castability and quality of base metal castings. Methods: Three groups of patterns with different direction and lengths in casting machine were casted and then studied qualitatively and quantitatively using mean and standard deviation in table of frequency. Results: Larger nodules and poros...

A BSTRACT : Stay cables, such as are used in cable-stayed bridges, are prone to vibration due to their low inherent damping characteristics. Transversely-attached passive viscous dampers have been implemented in many bridges to dampen such vibration. Several studies have investigated optimal passive linear viscous dampers; however, even the optimal passive device can only add a small amount of ...

Bridges are the essential components in lifeline transportation systems, and their safe operation is of great importance. Information on structural damage could assist timely repairs reduce downtime. With latest advancements sensing technology, collecting vibration data from bridges has become more accessible. However, effective processing still a challenge, given high dimensionality massive si...

Bridge vibration control is an important issue whose purpose is to extend the structural service life of bridges. Normally, the bridge is modeled as an elastic beam or plate subject to a moving vehicle. However, the moving truck on a bridge is a complicated problem that must still be researched. In this paper, we propose a new method, to overcome the huge load in the bridge a load cell is used ...