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All Journal Media Teknik Sipil Rekayasa Sipil
Ari Wibowo
Universitas Brawijaya
Civil Engineering, Building, Construction & Architecture

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PENGARUH RASIO TINGGI-LEBAR (Hw/Lw) TERHADAP KAPASITAS BEBAN LATERAL, DAN POLA RETAK DINDING GESER BERTULANGAN RINGAN AKIBAT BEBAN SIKLIK Mochammad Surya Budi Utomo; Ari Wibowo; Achfas Zacoeb
Media Teknik Sipil Vol. 15 No. 2 (2017): 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.v15i2.4472

Abstract

The shear wall is a vertical structural element of a structural system that serves to withstand lateral loads, whether caused by wind or earthquake. In Indonesia is still often found structural system in old buildings that still use a minimal reinforcement ratio or in this case the lightly shear wall. The lightly sliding wall is believed to have a low lateral load capacity, but in some cases in many countries, the lightweight sliding wall is sufficiently resistant to earthquakes. The height-width ratio is an important aspect in the shear wall structure. Therefore, further research is needed on the effect of high-width ratios. This study discusses the effect of high-width ratios on shear lightly shear walls due to cyclic loads. In this study, the shear wall used as a test specimen with many test specimens was 9 shear wall walls with variations of height-width ratios (2.0, 1.3, and 1.0) or with sizes: (800x400mm), (800x600mm), and (800x800mm) . The test is carried out by providing cyclic load and axial load constant of 3% of axial capacity (Pn) of each specimen until the specimen is collapsed by the drift control method. Data in the form of loads and deviations per cycle are recorded for the analysis of collapse mechanisms. While the picture taken as a reference pattern of cracks. The results of the test show that with increasing height-width ratios can produce the smallest lateral load capacity, or vice versa. The lateral load capacity generated by each test object is SW 2.0 (1), SW 2.0 (2), SW 2.0 (3), SW 1.3 (1), SW 1.3 (2), SW 1.3 (3), SW 1.0 1), SW 1.0 (2), and SW 1.0 (3) are 1593kg, 1503 kg, 1592 kg, 3296 kg, 3388 kg, 3286 kg, 4772 kg, 4771 kg, and 4778 kg. Crack patterns that occur on each specimen have the same result that is the same occurrence of opening (gap opening) at the bottom of the wall.
CYCLIC BEHAVIOUR OF LIGHTLY REINFORCED CONCRETE COLUMNS WITH NON-DUCTILE LAP SPLICES Rizki Amalia Tri Cahyani; Ari Wibowo; Wisnumurti Wisnumurti
Media Teknik Sipil Vol. 16 No. 1 (2018): Februari
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.v16i1.5110

Abstract

Experimental testing of lightly reinforced concrete column was conducted to investigate the collapse behavior of such column under cyclic lateral loading. Six column specimens, which have low longitudinal reinforcement and lack of confinement, were detailed with no lap splice, and non-ductile lap splice within or outside critical region. Placing the short, unconfined column's lap splice within critical region caused peak moment to fall short under its nominal moment capacity. In contrast, moment capacity of the specimen containing non-ductile lap splice outside critical region was in close agreement with those of specimen without lap splice. However, its inelastic damage region was moving away from the beam-column interface, resulted in degradation of drift capacity and rapid degradation of lateral strength. The presence of non-ductile lap splice outside critical region also potentially shift column's collapse mechanism from flexure to flexure-shear critical. The ability of lightly reinforced concrete columns to maintain its axial load carrying capacity to large drift ratios despite heavy damage and significant loss of lateral load carrying capacity indicates that lap splice failure does not create sudden collapse hazard.
Analisis Pengaruh Panjang dan Bentuk Fiber Kaleng Bekas Terhadap Kuat Lentur dan Lebar Retak Balok Beton Bertulang Indradi Wijatmiko; Ari Wibowo; Christin Remayanti Nainggolan
Rekayasa Sipil Vol 14, No 1 (2020)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2020.014.01.10

Abstract

Pemanfaatan limbah sebagai material konstruksi merupakan salah satu inovasi dan solusi untuk mengurangi limbah. Pemanfaatan material limbah tersebut tidak hanya untuk mengtasi limbah tetapi juga untuk menghasilkan material konstruksi yang kuat dan bersifat green building. Salah satu limbah yang dapat dimanfaatkan dan banyak ditemukan di lingkungan sekitar adalah kaleng kemasan baik untuk minuman maupun makanan. Kaleng bekas kemasan merupakan material yang dapat didaur ulang dan dimanfaatkan kembali. Dengan menemukan manfaat lain dari kaleng bekas tentu akan meningkatkan nilai ekonomi dan fungsi dari kaleng bekas sehingga masyarakat dapat melihat sisi dan nilai lain dari kaleng bekas. Kaleng bekas yang telah dipotong-potong sehingga menyerupai serat/fiber dapat menjadi material fiber pada beton bertulang. Pada penelitian ini kaleng bekas dipotong sehingga dimensi nya menjadi 2 x 40 mm (polos dan pilin) dan 2 x 80 mm (polos). Fiber tersebut ditambahkan sebanyak 10% dari volume benda uji dan kemudian dilakukan uji lentur dan pengamatan lebar retak. Beton fiber memiliki kelemahan yaitu lemahnya ikatan antara fiber dengan semen sehingga dilakukan penelitian mengenai pengaruh panjang dan bentuk fiber kaleng bekas terhadap kuat lentur dan lebar retak beton betulang. Variasi fiber 80 mm polos memiliki bidang geser yang lebih luas daripada variasi lainnya sehingga memiliki ikatan fiber semen yang lebih baik dan dapat meningkatkan kuat lentur dan mengurangi retakan yang terjadi.
PENGEMBANGAN PENGEMBANGAN MODEL PERBAIKAN DAN PENINGKATAN KEKUATAN STRUKTUR SAMBUNGAN BALOK-KOLOM PADA BANGUNAN PASCA GEMPA sri murni Dewi; Wisnumurti; Ari Wibowo; Adi Susetyo Dermawan
Rekayasa Sipil Vol. 17 No. 1 (2023): Rekayasa Sipil Vol. 17 No. 1
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2023.017.01.15

Abstract

This paper presents an experimental study on repairing damaged beam-column reinforced concrete joints using carbon fiber reinforced polymer (CFRP). The test objects were in the shape of the letter T which represented the beam-column connection. The test object came from the previous research which had been failure. The retrofitted action includes strengthening the column position, injection with concrete glue and adding CFRP. Two kinds of CFRP were use, CFRP sheets (EB) and CFRP strips (NSM). The integrity of concrete after injection were tested with Ultrasonic Pulse Velocity (UPV). The retrofitted specimens were tested in loading frame to occurred strength, stiffness and ductility for each kind of retrofitted action. Three kind of tested were held, bending in one direction, shearing in one direction, and quasi cyclic bending. The selection test adjusted to the damage history of specimen.  
Co-Authors Achfas Zacoeb Adi Susetyo Dermawan Christin Remayanti Nainggolan Indradi Wijatmiko Mochammad Surya Budi Utomo Rizki Amalia Tri Cahyani Sri Murni Dewi Wisnumurti wisnumurti Wisnumurti