Due to the influence of load, fatigue, corrosion, natural material aging and other long-term adverse factors, the state of the internal force of a cable-stayed bridge will be changed. These long-term effects can result in the bridge not meeting specified functional requirements, and potentially resulting in structural failure. This investigation focuses on the parameter identification of a gird...

Blue Road Research and the University of California have been collaborating over the past three years to develop a system employing fiber Bragg grating strain sensors and modal analysis to provide real-time, quantitative information on the structure’s response to a dynamic input (such as a seismic event), and a fast prediction of the structure’s integrity. This research, being funded by the Nat...

To increase the maximum span of cable-stayed bridges, Uwe Starossek has developed a modified statical system. The basic idea of this new concept is the use of pairs of inclined pylon legs that spread out longitudinally from the foundation base or from the girder level. Spread-pylon cable-stayed bridge has distinct advantage like reduction of sag of cables and oscillation of cable during earthqu...

This study investigates the effectiveness of a carbon-fiber-reinforced polymer (CFRP) in enhancing load-carrying capacity steel main girder metro station. The objective is to evaluate applicability CFRPs sustaining increases applied loads and assessing their on curved surfaces. Finite element analysis (FEA) identified most stressed areas under design loads. Based FEA results, targeted strengthe...

The natural aging, environmental impact, and appropriate design are certainly playing a serious role in safety of the bridges function. The functional safety of bridge constitutes a prime element of the transportation system serving commuters, passengers and freight. According to Federal Highway Administration, the steel bridges share represents a large amount of the United States' bridges. In ...

Preliminary notes This paper outlines the research aimed at developing an effective and reliable monitoring method for structural damage identification. A computational procedure for a direct iteration technique based on the non-linear perturbation theory is proposed to identify structural damage, when information about only natural frequencies for the damaged structure is required. The present...

Entrapped air in the chambers of a T-girder bridge generates considerably large vertical force which is harmful to safety superstructure. The contribution entrapped not considered when calculating flood related specifications, and also it has been taken into account by researchers. Two-dimensional, scaled-down models at 1:40 scale are selected as research object. Analytical numerical methods em...