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Metode Eksperimental Struktur Kolom Beton Bertulang Tahan Gempa Menggunakan CFRP Sebagai Eksternal Confinement Karmila Achmad; Agoes SMD; Tavio Tavio
Jurnal Teknologi Terpadu Vol 1, No 1 (2013): JTT ( Jurnal Teknologi Terpadu )
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32487/jtt.v1i1.14

Abstract

AbstractThis paper analyzes about the increasing of the strength by seismic load in RC square column structure which has been given CFRP external confinement. There are two specimens will be compared. They are C-1and C-1C. C-1 is control column and C-1C is column with CFRP external confinement. Analysis experimental result got that collapse C-1 column at plastic hinge zone and collapse C-1C column until the end of the test the demage of column surface from all of plastic hinge zone. They are effected by the concrete demage and colour of the resin CFRP changing and the increasing displacement 77% from the plan. From 3 strength parameters, show that C-1C increases its strength for P max increase 54,97%, .max is 81,18% and M max is 55,36% for C-1.Keywords- Seismic load, CFRP, RC column, Experimental method, External confinement,AbstrakMakalah ini meneliti mengenai peningkatan kekuatan dengan adanya beban gempa yang bekerja pada elemen struktur kolom beton bertulang pada bangunan tinggi yang telah diberi pengekangan eksternal CFRP. Ada dua benda uji yang akan dibandingkan yaitu C-1 sebagai kolom control dan C-1C sebagai kolom dengan pengekangan CFRP. Dari hasil eksperimental kegagalan kolom C-1 terjadi pada zona sendi plastis dan C-1C sampai akhir pengujian permukaan kolom pada zona sendi plastis secara keseluruhan sudah tidak rata akibat rusak beton dibagian dalam dan perubahan warna resin CFRP serta terjadi peningkatan displacement 77% dari displacement rencana. Dari 3 parameter kekuatan menunjukan bahwa C-1C memiliki kekuatan meningkat dengan rincian P max meningkat 54,97%, .max meningkat 81,18% dan M max meningkat 55,36%.Kata Kunci- Beban gempa, CFRP, Kolom beton bertulang, Metode eksperimental, Pengekangan eksternal
PENGARUH PENGEKANGAN GFRP TERHADAP KEKUATAN DAN DAKTILITAS KOLOM BETON BERTULANG PERSEGI AKIBAT BEBAN SIKLIK Karmila Achmad; Agoes SMD; Tavio .
Media Teknik Sipil Vol. 10 No. 2 (2012): Agustus
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/jmts.v10i2.1789

Abstract

Karmila Achmad1, Agoes SMD2 & Tavio31Mahasiswa Program Magister Teknik Sipil Struktur Universitas Brawijaya, Malang dan Dosen Politeknik NegeriBalikpapan2 Guru Besar Teknik Sipil Struktur Universitas Brawijaya, Malang3Dosen Teknik Sipil Struktur-FTSP Institut Teknologi Sepuluh Nopember, SurabayaEmail : milabpp@yahoo.co.idABSTRACTThe aim of this research is to get improving of strength and ductility in column specimen giventhe GFRP strengthener (Glass Fiber Reinforced Polymer) toward with original column, by using thecyclic load as the fix representative of quake load. There are two specimens full scale used. Theyare C-1 (original column) and C-1G (column with GFRP strengthener 1 layer). From the researchgot Pmax sequentially is 278,9 kN and 372.4 kN, and dmax is 53.24 mm and 56.78 mm, each for C-1and C-1G. For C-1 column, the concrete gets damage in plastic hinge zone at drift ratio 3.5%indicated by bending of longitudinal steel bar and spalling of cover concrete. The test for C-1G endsin third cycle at drift ratio 5% and gets damage in fracture of GFRP in plastic hinge zone. Thedamage is the changing of resin color the circumferential direction in three spots. They are as longas 10, 11 and 18 cm. Ductility index taken on three positions are plastic hinge zone, column with ahalf high effective and as high as effective column. From the analyze result got ductility index C-1on the three positions are 1.65; 1.70; 1,97 and ductility index C-1G are 1,44; 1,44 and 1,38 each forplastic hinge zone, a half high effective and as high as effective columnKey words : ductility, GFRP, strength, external confinement, cyclic
METODE EKSPERIMENTAL PERKUATAN KOLOM BETON BERTULANG MENGGUNAKAN FRP Karmila Achmad; Agoes SMD; Tavio .
Media Teknik Sipil Vol. 12 No. 2 (2014): Agustus
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/jmts.v12i2.2286

Abstract

METODE EKSPERIMENTAL PERKUATAN KOLOM BETON BERTULANG MENGGUNAKAN FRP Experimental Method Of Strengthening Concrete Columns Using FRPKarmila Achmad1, Agoes SMD2, Tavio31Jurusan Teknik Sipil Fakultas Teknik – Politeknik Negeri Balikpapan2Jurusan Teknik Sipil Fakultas Teknik – Universitas Brawijaya Malang3Jurusan Teknik Sipil Fakultas Teknik – Institut Sepulun Nopember SurabayaAlamat korespondensi: Jl Soekarno Hatta Km. 08, Balikpapane-mail: 1)milabpp@yahoo.co.idAbstractThe column is an important structure element because the failure of column will have direct impact to other structure components, so that the ruin of structural column is an important thing to be observed. The research use experimental method. The aim of this research is to get improving of strength and ductility in column specimen which is given the FRP strengthener (Fiber Reinforced Polymer) compared with original column. There are 3 specimens used. They are C-1 (original column), C-1G (column with GFRP strengthener 1 layer) and C-1C (column with CFRP strengthener 1 layer). From the research got the increasing Pmax toward original column is 33,52% and 54,97%, the increasing of dmax is 6,65% and 81,18%, also the increasing of Mmax is 32,41% and 55,36% each for C-1G and C-1C. Ductility indexes taken on three positions are plastic hinge zone, a half high of column effective and as high as column effective. From analyze result got the increasing of displacement ductility toward C-1 for C-1G is -34,20%, -28,46% and -12,74% and C-1C is 64,48%, 108,74% and 118,68%, each for plastic hinge zone, a half high of column effective and as high as column effective. In column C-1G happened the decreasing of ductility value because there has been destruction in column head when the test was running. Key words : Experimental method, FRP, RC, Strengthener columnAbstrakKolom merupakan elemen struktur penting karena kegagalan kolom akan berpengaruh langsung terhadap komponen struktur lainnya , sehingga kehancuran kolom struktural merupakan hal yang penting untuk dicermati . Penelitian ini menggunakan metode eksperimen . Tujuan dari penelitian ini adalah untuk mendapatkan meningkatkan kekuatan dan daktilitas dalam spesimen kolom yang diberi FRP penguat ( Fiber Reinforced Polymer ) dibandingkan dengan kolom awal . Ada 3 spesimen yang digunakan . Mereka adalah C - 1 ( kolom asli) , C - 1G ( kolom dengan GFRP penguat 1 lapisan ) dan C - 1C ( kolom dengan CFRP penguat 1 lapisan ) . Dari penelitian mendapat peningkatan Pmax menuju kolom awal adalah 33,52 % dan 54,97 % , peningkatan dmax adalah 6,65 % dan 81,18 % , juga meningkatnya Mmax adalah 32,41 % dan 55 , 36 % masing-masing untuk C - 1G dan C - 1C . Indeks daktilitas diambil pada tiga posisi yang zona sendi plastis , setengah tinggi kolom yang efektif dan setinggi kolom yang efektif . Dari hasil analisis mendapat peningkatan daktilitas terhadap - C 1 untuk C - 1G adalah -34,20 % , -28,46 % dan -12,74 % dan C - 1C adalah 64,48 % , 108,74 % dan 118,68 % , masing-masing untuk zona sendi plastis , setengah tinggi kolom yang efektif dan setinggi kolom yang efektif . Dalam kolom C - 1G terjadi penurunan nilai daktilitas karena sudah ada kerusakan di kepala kolom saat tes berjalan .Kata kunci : metode eksperimental , FRP , RC , kolom Strengthener
Co-Authors Karmila Achmad Karmila Achmad Tavio, Tavio