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Experimental investigation of seismic performance of concrete-filled glass fiber reinforced polymer tubular columns

Journal of Harbin Institute of Technology(New Series) 2011年第5期18卷 37-43页

作者：关宏波王清湘 State Key Laboratory of Coastal and Offshore Engineering Dalian University of Technology College of Civil Engineering and Architecture Liaoning Technical University

A reinforced concrete (RC) column and four concrete filled GFRP tubular columns,which are subjected to combined axial compression and lateral cycle loading,were tested in order to investigate the seismic performance of composite construction concrete filled glass fiber reinforced polymer (GFRP) tubular (CFFT) columns.The results indicated that concrete-filled GFRP tubular columns exhibit considerable influence over the seismic performance of columns by providing hoop confinement to the core concrete.The concrete filled GFRP tubular columns exhibit significant improvement over traditional RC columns in both ultimate strength and ductility.Different column-footing connection modes do not affect the strength and ductility of concrete filled GFRP tubular columns.The strength of concrete filled GFRP tubular columns under high axial compression load conditions are slightly increased,however,ductility declined.

关键词： concrete columns connections ductility concrete filled GFRP tubular column seismic

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Behaviour of Reinforced concrete columns Strengthened with Ferrocement under Compression Conditions: Experimental Approach

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World Journal of Engineering and Technology 2016年第4期4卷 608-622页

作者： Adnan Al-Sibahy Civil Engineering Department University of Al-Qadisiyah Al Diwaniyah Iraq

This paper reports a study based upon experimental investigation which aims to assess the behaviour of reinforced concrete columns strengthened with a new configuration of steel wire mesh as part of ferrocement layer under the action of axial compression loads. Square and circular small scale columns with three different slenderness ratios of 5, 6.7 and 10 were adopted. A comprehensive experimental progarmme was then running to measure the load capacity and both lateral and vertical displacements. The failure mode was also monitored for each tested case. The results obtained was compared with the reference column samples (without wire mesh) and with some expressions suggested by ACI Code. The experimental results showed that the most influential parameter on the property of load carrying capacity is the slenderness of column. As the slenderness increases, the load capacity clearly decreases. The use of wire mesh enhanced the capability of column to resist the axial loads due to confinement role provided by such material. The maximum percentage increase in load carrying capacity for the modified columns compared with those for the reference samples was 53% for the circular column at slenderness ratio of 10. The critical path of the failure mode was similar for all of the tested columns and normally began from the top or bottom ends, then, in some cases, passed through the middle zone of the column. A suitable expression was suggested to be used for calculating the modulus of elasticity of the tested column based upon the value of load carrying capacity under compression loads.

关键词： Ferrocement concrete columns Compression Loads Slenderness Ratios

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Reinforcement of Damaged concrete columns by Filament Winding of Thermoplastic Composites

Reinforcement of Damaged Concrete Columns by Filament Windin...

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第十三届国际复合材料会议

作者： N.Glienke J.Fl(?ck F.Haupert K.Friedrich S.A.Paipetis Institute for Composite Materials (IVW 67663 Kaiserslautem Germany Institute for Composite Materials (IVW 67663 Kaiserslautem Germany Institute for Composite Materials (IVW 67663 Kaiserslautem Germany Institute for Composite Materials (IVW 67663 Kaiserslautem Germany University of Patras Greece

＜正＞The present study was focused on the feasibility to strengthen concrete columns of bridges with continuous fibre reinforced thermoplastic composites. For this purpose cylindrical concrete specimens with a diameter of 103mm were prepared with a demanded strength category B35 of the concrete group BII. After a standard storing time, some specimens were subjected to a tensile splitting strength test in order to simulate a damaged structure. The

关键词： concrete columns thermoplastic filament winding technique polymer composites strengthening efficiency infrastructure

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