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All Journal Jurnal Spektran MEDIA KOMUNIKASI TEKNIK SIPIL
Putu Deskarta
Program Studi Teknik Sipil, Fakutas Teknik, Universitas Udayana
Civil Engineering, Building, Construction & Architecture

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Perilaku Runtuh Balok Beton Bertulang dengan Sengkang Welded Wire Fabric (WWF) Sudarsana, I Ketut; Deskarta, Putu; Sanjaya, Putu Chandra Wira
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 25, Nomor 1, JULI 2019
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (668.183 KB) | DOI: 10.14710/mkts.v25i1.20394

Abstract

The use of Welded Wire fabric (WWF) has been widely tested and proven to behave very well as stirrups in a column, but its behavior has not been widely known when used on beams. This research was conducted to evaluate the behavior of beams with stirrup reinforcement of WWF M4 grid. A total of nine beam specimens with dimensions of 330mm x 180mm x 1500mm were made and tested under monotonic loading until failure loads with three variations of stirrup, where each variation was made of three beam specimens and four concrete cylinders. The concrete was a ready mix concrete with an average compressive strength of 22,875 kN at 28 days. Beams were tested on simply supported with two concentrated loads at a distance of 500 mm from each support. The loads was applied incrementally and the middle span deflections were recorded for each increase in loads. The test results show that the stirrups of WWF M4 grid on beam specimens can increase the shear capacity, stiffness and control the occurrence of the first inclined crack. When compared to conventional stirrups (BJTP ∅ 6mm), beams with WWF M4 stirrups show better behavior.
PERKUATAN SEISMIK STRUKTUR RANGKA BETON BERTULANG MENGGUNAKAN BREISING BAJA TIPE X DAN V TERBALIK Made Sukrawa; Ida Bagus Dharma Giri; I Putu Deskarta; Made Hendra Prayoga
JURNAL SPEKTRAN Vol 4 No 2 (2016): Vol. 4, No. 2, Juli 2016
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (591.065 KB) | DOI: 10.24843/SPEKTRAN.2016.v04.i02.p10

Abstract

Abstract: Analysis of reinforced concrete frame with steel braces has been done to compare the behavior of the open frame structure with reinforced concrete structure with steel braces. Three models of 2D open frame structure with 3, 4 and 5 floors were made and analyzed in SAP2000 v17 with intermediate detailing according to Indonesian Codes for Seismic Load (SNI 1726: 2002). 3-span frame structure with a span length of 6 m and level height of 3,5 m were designed according to SNI 1726: 2002, and then re-analyzed with special detailing according to New Indonesian Codes for Seismic Load (SNI 1726: 2012). After that, it was added with braces as seismic retrofitting. Two types of braces (X and concentric inverted V) were used in this study and analyzed with conventional analysis and stage construction analysis according to their stages of implementation. From the analysis results, several structure components that analyzed according to SNI 1726:2012 provitions were experience over-stressed. After retrofitted with steel braces, those components fulfill strength provition according to SNI 2847:2013 about structural concrete regulations for buildings. In addition to that, displacements that occurs on braced frame are smaller than displacements of the open frame structure with ratio of 0.08, 0.12, and 0.18 for X-brace frames with 3,4, and 5 storey and 0.07, 0.11, and 0.16 for inverted-V brace. With staged construction analysis, displacements of  X-braced frame structure increased by 14.38%, 13.62%, and 9.98% from the conventional analysis results for structure with 3, 4,and 5 storey. For structure with inverted-V brace, displacements increased by 15.83%, 14.29%, and 10.09%.
PENGGUNAAN TEORI PUSAT ROTASI SESAAT DALAM MENGHITUNG KAPASITAS SAMBUNGAN MOMEN PADA KONSTRUKSI KAYU Putu Deskarta; Ketut Sudarsana
JURNAL SPEKTRAN Vol 11 No 1 (2023)
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRAN.2023.v11.i01.p08

Abstract

Telah dilakukan penelitian untuk membandingkan hasil prediksi kekuatan sambungan momen pada konstruksi kayu memakai baut, menggunakan teori pusat sesaat, dengan hasil experimen. Untuk itu dilakukan dua jenis pengujian yaitu; pengujian kuat tumpu baut, untuk mencari hubungan antara gaya tumpu terhadap deformasi dari baut, pada berbagai arah gaya, dan pengujian sambungan momen yang menerima beban eksentris. Ada empat jenis kayu yang dipakai pada pengujian kuat tumpu yaitu kayu jenis kamper, merbau, bengkirai dan kempas. Benda uji kuat tumpu terdiri dari sebuah baut yang menempel pada kayu sehingga menyerupai sambungan tampang dua yang menerima beban tekan sentris. Pada pengujian sambungan momen hanya dibuat 1 jenis benda uji dengan tiga pengulangan. Hasil pengujian kuat tumpu mendapatkan kurva hubungan gaya tumpu terhadap deformasi baut yang berbentuk linier pada tahap awal sampai deformasi 1 mm, kemudian nonlinier sampai keruntuhan. Selanjutnya, memakai kurva hubungan gaya dan deformasi pada bagian yang linier tersebut, untuk menghitung kapasitas sambungan menggunakan teori pusat rotasi sesaat, memberikan hasil yang hampir bersesuaian dengan hasil penelitan.
Co-Authors Adi Janitra Suardian Dewa P.G. Sugupta Dharma Putra I Ketut Sudarsana Ida Bagus Dharma Giri Ida Bagus Rai Widiarsa Made Hendra Prayoga Made Sukrawa Ni Made Ratih Nawangsari Sanjaya, Putu Chandra Wira Yundari, Yundari