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All Journal Jurnal Rekayasa Jurnal Rekayasa Sipil dan Desain Teras Jurnal Journal of Engineering and Scientific Research (JESR)
Vera Agustriana Noorhidana
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Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Other

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Journal : Jurnal Rekayasa

 1 
Perilaku Balok Beton Bertulang Dengan Variasi Tinggi Lubang (Web Opening) Akibat Beban Lentur Noorhidana, Vera Agustriana
Rekayasa : Jurnal Ilmiah Fakultas Teknik Universitas Lampung Vol 16, No 2 (2012): Edisi Agustus 2012
Publisher : UNIVERSITAS LAMPUNG

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Abstract

The purpose of this study is to analyze the effect of the height of web openings on behaviour ofreinforced concrete beams. The dimensions of web openings are 180mm in length with variationsof height (40mm, 90mm, and 135mm), which is is located on the middle of beam’s span. Thespecimens were four reinforced concrete beams (150mmx270mmx3000mm), namely BP (a beamwithout web openings, BL1 ( a beam with web openings having heights of 40mm), BL2 ( a beamwith web openings having heights of 90mm), and BL3 ( a beam with web openings having heightsof 135mm). There were strengthening bars around the openings to avoid the happening of firstcracks around the openings. Compressive strength of concrete was 20 MPa. The testing of beamsused third-point-loading method which had 2700mm clear span. The results were, the maximumloads of BP, BL1, BL2, and BL3 were 3717kg, 3581kg, dan 3649kg respectively. The curve ofload-deflection and moment-curvature of each beam were sharper from BP, BL1, BL2, and BL3respectively. The conclusion is, the higher of openings will result the higher of maximum loads ofbeams, which is caused by the position of strengthening bars closer to flexural bars resulting thehigher of nominal moments.
PENGARUH PELUBANGAN PADA BADAN BALOK BETON BERTULANG TERHADAP KAPASITAS BEBAN LENTUR Vera Agustriana Noorhidana; Eddy Purwanto
Rekayasa : Jurnal Ilmiah Fakultas Teknik Universitas Lampung Vol 15, No 2 (2011): Edisi Agustus Tahun 2011
Publisher : UNIVERSITAS LAMPUNG

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Abstract

The purpose of this study is to analyze the behaviour of reinforced concrete beam with web opening. The variable of research is the location of web opening on a beam. There were no strengthening around the opening to represent situation of making an opening on existing beam. There were three reinforced concrete beams (150mmx270mmx3000mm) as spesimens, namely a beam without web opening (Code: BU), a beam with web opening which is located on the middle of span of beam (Code: BLLTP), and the other one is a beam with web opening which is located near the support (Code: BLGTP). Compressive strength of concrete was 20 MPa. The beamswere simply supported on 2700mm clear span, and subjected to at two points load were located 900mm from the support. The results were curve of load-deflection, curve of moment-curvature, and crack pattern. The maximum load of BU, BLLTP, and BLGTP were 3717kg, 3581kg, dan 3649kg respectively. The curve of load-deflection and moment-curvature showed that after first crack was happened, the curve of BLLTP and BLGTP were more ramps than curve of BU. The cracks were concentrated on around of openings start at lower load. The results showed that making the web opening without strengthening on existing beam has a little effect on the load capacity of beams (below 5%), but decrease the stiffness of beam significantly.
Co-Authors Agustin, Cahyani Putri Andhini, Vania Meutia Andi Setiawan Anggraeni, Sylvia Dewi Calosa, Evanthe DWSBU, Chatarina Niken Eddy Purwanto Endro Prasetyo Wahono Fikri Alami Gusti, Melinda Halawa, Vince Nukrisman Hasti Riakara Husni Hussein, Imam Isneini, Mohd Isneini, Muhammad karami, muhammad Laksmi Irianti Laksmi Irianti Irianti Masdar Helmi Mohd. Isneini Putra, Asyrofi Miranda Putra, Mayka Purnama Putri, Nur Mila Putri, Yoleta Tri Rahmanisa, Laila Indah Ratna Widyawati Riana, Netta Ristama, M Alvany Veschonanda Sahast, Corry Jayaputri Sasana Putra, Sasana Suma, Damas Novalda Suri, Yola Andara Pratami Surya Sebayang Tas'an Junaedi Junaedi Ulini'am, Adipati Syahidullah Utami, Tri Ratna Yonanda, Prima Sandy