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All Journal Jurnal Ilmiah Universitas Batanghari Jambi Jurnal Teknik Sipil Jurnal Talenta Sipil
Yosafat Aji Pranata
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Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Economics, Econometrics & Finance Education Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology

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Journal : Jurnal Ilmiah Universitas Batanghari Jambi

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Studi Pengaruh Radius Kelengkungan terhadap Efektifitas Kekangan pada Kolom Persegi dengan Perkuatan FRP Anang Kristianto; Yosafat Aji Pranata; Noek Sulandari
Jurnal Ilmiah Universitas Batanghari Jambi Vol 22, No 1 (2022): Februari
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/jiubj.v22i1.1949

Abstract

Revised code of earthquake-resistant building design from SNI 1726:2012 to SNI 1726:2019 as a result of changes in the earthquake magnitude that occurred in recent years and developments in earthquake engineering research resulted in many building structural elements should be strengthened, especially on column elements. One of the most adopted strengthening techniques for enhancing the performance of existing RC columns consists of wrapping a member with CFRP (Carbon Fiber Reinforcement Polymer) sheets, inducing a passive confinement action capable of increasing the columns axial strength and displacement capacity. The use of CRFP as strengthening on square columns in existing buildings should consider various factors, including the column corner radius and the width of the strip of FRP required if not using full wrapping. This paper presents the confinement stresses analysis at the different radius of curvature of the square column corner and analyzes the correlation of stress-strain in the cross-section using data from various existing studies. An experimental study will also be done by axial loading test FRP column (100mm x 100mm x 200mm) with several different curvature radii. The results of the axial compression test to the specimens found that the effect of curvature is quite significant for confinement effectiveness at r/b < 0.15. Based on this experiment,  a slight increase of the axial capacity on the column specimens with radius curvature r=0mm and r=10mm ( below r=13mm, the smallest radius allowed by the code). Rectangular concrete columns strengthened by FRP with r/b < 0.15 could not be effective to the confined concrete core due to stress concentration at the corner.
Co-Authors Bambang Suryoatmono Calvien Haryanto Daud R. Wiyono Deni Setiawan Michael Wijaya Nathan Madutujuh Noek Sulandari Pricillia Sofyan Tanuwijaya Roi Milyardi Verena Bernadetta C. N Yonathan Aditya Santoso Yunizar Yunizar