Many steel structures are in need of strengthening due to reqUirements to increase carrying capacity and/or rehabili tation due to corrosion degradation. This paper summarizes the results of an investigation that has been conducted to evaluate the performance of carbon fiber reinforced polymer (CFRP) materials to increase the strength and stiffness of steel structures. Two types of specimens we...

A butterfly web girder is a box that has discretely distributed side-surface openings. Due to these openings, girders show better aerodynamic performance than conventional girders. This study aims investigate the effects of openings on instability when it placed in tandem with another girder. In addition, this whether one affected by an adjacent series wind tunnel tests will be carried out and ...

Engineering applications have shown that variable-section supports of steel crane girders are prone to fatigue fracture, and traditional prediction experience is not applicable these types due the complex internal stresses caused by their unique geometries. In this paper, a new approach was proposed for based on peak stress method; can locate initiation sites predict lives under axial bending l...

This presentation describes the concepts involved in design and construction of a reinforcement-free bridge deck intended to provide cost effective, durable and more rapid construction for highway bridges. The new wide flanged or bulb tee precast prestressed concrete girder sections currently used in bridges allow for a shorter effective span for the bridge deck because of the wide girder flang...

Purpose. The purpose of this work is to analyze the existing composite reinforced concrete girder structures bridges, determine their advantages and disadvantages, study stress changes in elements structure its deflections caused by coupling metal beams roadway, possibility using these post-conflict reconstruction. Methodology. Examination data covered literature. Studying experience design con...

the effect of steel plate thickness on the repair effectiveness of rc beam is presented in this paper. a total of four beams were tested, one beam repaired by cfrp with a thickness of 1.2 mm and used as a control beam, and three beams repaired by a steel plate. steel plates with a thickness of 2 mm, 3 mm, and 4 mm were used in repairing the beams. the maximum load-carrying capacity, deflection ...