Abstract The box girder of the Miaoziping Bridge, a three-span prestressed concrete continuous rigid-frame bridge, suffered serious crack in its section’s web near 1/6 to 1/2 length side span and middle-span 1/4 3/4, as result 2008 Wenchuan earthquake, which also caused large lateral residual displacements at both ends span. In this study, eight strong-motion records bridge site two other (El C...

The frequently conventional assumption that bridge temperature is uniformly distributed on long-span bridges could lead to uncertainty when analyzing effects. This study investigated the surface of steel box girders a suspension bridge, emphasizing distribution characteristics in longitudinal (spanwise) direction. girder was monitored using long-term structural health monitoring system (SHMS). ...

Abstract The paper presents the Structural Health Monitoring system installed on posttensioned concrete road bridge over Odra River in Poland. superstructure has a form of 5‐span box girder with skewed supports, built using cantilever method. During operation (since 2010) many cracks arrived superstructure, mainly within main span length 140 m. Therefore, as part complex diagnostic process, mon...

Differential settlement of the foundation of the LCLS Undulator Hall will cause quadrupoles to move and the electron beam trajectory to distort. The resulting phase errors will decrease the FEL power and require time consuming beam-based alignment sessions to correct. By supporting quadrupoles on girders, with three quadrupoles to a girder, the foundationmotion induced phase error between the b...

In this paper the parametric study is carried out to investigate the effect of number of cells in optimal cost of the non-prismatic reinforced concrete (RC) box girder bridges. The variables are geometry of cross section, tapered length, concrete strength and reinforcement of the box girders and slabs that are obtained using ECBO metaheuristic algorithm. The design is based on AASHTO standard s...

Abstract: Aerodynamic admittance is a key parameter affecting the analysis accuracy of the bridge buffeting response. However, few articles have covered the issue of the wide-body flat box girder with much smaller depth-width ratio (such as 1/12 studied in this paper). Therefore, to explore the real buffeting force of the wide-body flat box girder, experiments of the static force coefficients a...

Pipe bridges are structures that play an indispensable role in chemical and oil plants. They support cable trays or pipe-carrying material. This study aims to identify the ideal configuration of a pipe bridge through comparative girders with drop hanger truss arrangements for three different spans. The most efficient arrangement each span was suitably identified. Through analysis carried out, i...

In the mid 1990's the FHWA established a High Performance Concrete (HPC) program aimed at demonstrating the positive effects of utilizing HPC in bridges. Research on the benefits of using high performance concrete for bridges has shown a number of benefits. These include increased span capacities, or wider girder spacings (and hence a fewer number of girders); increased concrete compressive and...