three unconventional details for plastic hinges of bridge columns subjected to seismic loads were developed, designed, and implemented in a large-scale, four-span reinforced concrete bridge. shape memory alloys (sma), special engineered cementitious composites (ecc), elastomeric pads embedded into columns, and post-tensioning were used in three different piers. the bridge model was subjected to...

Nagisa Bridge, a single span footbridge, was recently completed in Aomori prefecture, Japan. The structure of this bridge is a hybrid structure of cable-stayed prestressed concrete bridge and steel suspension bridge. It is the first application as this structure type of bridge in the world. Concrete girders near pylons are supported by stay cables. Steel girders are supported by suspension cabl...

Purpose This paper presents a new automated method to predict condition state rating in bridge inspection. The method is designed to identify proper risk-based inspection interval by neural networks and image processing techniques. Method The surface defect considered in this research work is the loss of surface portion (scaling) of concrete due to freezethaw action based on Ontario Structure I...

Non-linear storytelling has been an effective means of knowledge sharing and learning in organizations and societies for a long time. With the advent of the Web 2.0 user generated content like digital videos in YouTube and digital images in Flickr.com have become particularly interesting. The idea for PESE (Personalized Storytelling Environment) is to combine classic multimedia production envir...

The bridge has been a crucial element of the transportation system U.S.A. for many years. National Bridge Inventory (NBI) reported more than 615,000 national bridges in 2018. Maintaining and fixing is task agencies to keep road network connected. Louisiana, which 12,899 bridges, was selected as study site this study. American Road Transportation Builders Association (ARTBA) 2019 that 13% all Lo...

The development and the main features of a knowledge-based expert system for modelling the requirements of durable concrete in sulfate exposure, called the Sulfate-Resistant Concrete Advisor (SRCA), are described. The system was developed to help improve the quality of concrete exposed to sulfate environment by minimizing mistakes and deficiencies in selecting concrete constituents. Using Kappa...

The purposes of this study were to investigate the seasonal variations in the relative permittivity of actual concrete bridge decks of various ages on Korea expressways, and to propose a practical way to calibrate two critical effects, to assess the condition of the concrete bridge decks with better accuracy. For these purposes, fifty-three actual concrete bridge decks on Korea expressways were...

Since the 1950’s, prestressed concrete beams have become a factor in almost one third of all new bridge construction in the United States. In Michigan, prestressed concrete was introduced in 1954 and the first prestressed concrete side-by-side box-beam bridge was built in 1955. Pontis data indicates 2,054 side-by-side prestressed concrete box-beam bridges in Michigan; 236 are part of the Nation...

Development and implementation of RABIT (Robotics Assisted Bridge Inspection Tool) in condition assessment concrete bridge decks is described. The system uses multiple nondestructive evaluation (NDE) technologies in characterization of three most common deterioration types: rebar corrosion, delamination, and concrete degradation. The system implements four NDE technologies: electrical resistivi...