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ppt on cfst columns
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sir myself sonali..please provide me argently ppt and seminar report...
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In the last decades, the tubular steel column filled with concrete (CFST) plays an eminent role in the construction industry due to its structural behavior as the great deformation and the capacity of energy absorption. But these members deteriorate due to environmental effects such as corrosion and aging. The external strengthening of the use of fiber reinforced polymer material (PRF) is emerging as a new trend in improving the structural performance of CFST members to counteract the drawbacks in the use of past rehabilitation work. In this work, an experimental investigation has been carried out to investigate the behavior of thin CFST members reinforced with FRP under compression. The size of the specimens includes 42.4 mm in diameter, 3.2 mm in thickness and 1500 mm in height. In the experimental work, three columns are externally joined by 200mm wide CFRP strips with spacing of 60mm and other three columns with 300mm width and 100mm spacing. Experiments are performed to examine the interaction of FRP with CFST columns in terms of failure modes, axial load Vs lateral deformation and improved load capacity. In the end, the results showed that there is an improvement in the behavior and load capacity of the CFST columns by strengthening the external ones using FRP compounds.

Concrete steel tubes are gaining increasing prominence in a variety of engineering structures, with the main cross sections being square, rectangular and circular hollow sections. The study on the behavior and characteristics of CFST columns is the main need of the hour. This review document highlights the important contributions in the CFST columns contributed in recent years. This paper presents innovative experimental investigations of CFST columns and column load deformation response characteristics. This article presents a full summary of several analytical and numerical studies on the modeling of CFST members. It addresses the design specifications and standards of JIA, Eurocode-4, ANSI / AISC and AIK.

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