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All Journal Jurnal Ilmiah Teknik Sipil Buletin Udayana Mengabdi Jurnal Spektran Jurnal Teknik Sipil Jurnal Teknik Sipil Jurnal Ilmiah Hospitality Management Japam Jurnal Penjaminan Mutu Pangkaja: Jurnal Agama Hindu IPSSJ

I Ketut Sudarsana

Program Studi Teknik Sipil Fakultas Teknik Universitas Udayana

Author-ID : 2683902

Religion Humanities Civil Engineering, Building, Construction & Architecture Economics, Econometrics & Finance Education Languange, Linguistic, Communication & Media Public Health Social Sciences Transportation Other

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EFEK KOMBINASI BEBAN AKSIAL DAN LENTUR SERTA VARIASI BENTUK DAN UKURAN LUBANG TERHADAP KONSENTRASI TEGANGAN PADA BALOK BAJA BERLUBANG M. Sukrawa; A. A. N. A. Angga Pradhana; G. Pringgana; K. Sudarsana; I G. A. Susila; I A. M. Budiwati
JURNAL SPEKTRAN Vol 7 No 2 (2019): Vol. 7 No. 2, JULI 2019
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (457.382 KB)

EFFECT OF COMBINED AXIAL AND BENDING LOADS AND VARYING SHAPES AND SIZES OF OPENING ON STRESS CONCENTRATION IN STEEL BEAM WITH WEB OPENINGABSTRACTResearch related to stress concentrations in perforated steel beams is usually carried out on simple beams without the influence of axial loads. In this study, modeling of 2-story steel frame structures was carried out to evaluate the effect of the combination of axial and flexural loads on the stress concentration around the opening in the steel beam. The observed opening includes square and circular opening, with and without reinforcement around the opening, with opening dimensions of 0.3 H, 0.5 H, and 0.7 H. H is the height of the beam. The types of reinforcement are All Around (AA), Long Horizontal (LH), and Doubler Plate (DP). The analysis results showed that 17% increase in beam axial force due to earthquake load, resulting in stress increase of 9% in square opening. The maximum stress around circular opening is smaller than that on the square one. The maximum stresses in the circular openings are 0.35 fy, 0.43 fy, and 0.69 fy for opening dimensions of 0.3 H, 0.5 H and 0.7 H, respectively. In the square opening, the maximum stress in 0.3 H opening is 0.57 fy, while for opening dimension of 0.5 H and 0.7 H the stresses exceeds the yield stress of the steel. Addition of AA and LH reinforcement in 0.5 H square opening, results in stresses lower than fy, whereas for the 0.7 H opening the reinforcement around the hole is ineffective.

PENGGUNAAN TERAK NIKEL SEBAGAI AGREGAT DALAM CAMPURAN BETON Wayan Mustika; I M. Alit K. Salain; I K. Sudarsana
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

Nickel slag is one kind of nickel ore smelting waste after the combustion process. Production of nickel slag PT. Antam Pomalaa Kolaka Southeast Sulawesi province during the period 2011-2012 period approximately 1 million tons of slag / year, with a nickel content in ore processing of nickel is between 1.80% to 2.00%. Visually, the physical form of this nickel slag aggregate resembles. Research on the use of nickel slag as an aggregate in concrete mixture is carried out using a cylindrical specimen with a diameter of 15 cm and 30 cm high by 48 pieces were tested at 28 days with some variations in the mix. Variation 01, 100% natural aggregate, variation 02, nickel slag as coarse aggregate, variation 03, nickel slag as fine aggregate, and variation 04, nickel slag as coarse aggregate and fine aggregate. Aggregate gradation in the mixture is set and is designed so that it meets the specifications gradation mix for maximum aggregate size of 40 mm. The composition of the concrete mixture used is a mixture of concrete with the ratio of cement : fine aggegate : coarse aggregate is 1: 2: 3 in a weight ratio with cement water ratio (fas) is set at 0.5. The results showed that when compared with the use of natural agregate, terak nickel is used only as a coarse agregate, a fine agregate only and combined agregate coarse and fine agregates resulting slump values ??fell 39.47%, an increase of 55.26%, and an increase of 34.21%. As a coarse agregate, terak nickel increases the compressive strength, modulus of elasticity and splitting tensile strenght, respectively for 42.27%, 19.37% and 23.46%. As fine agregate, nickel terak resulting value of compressive strength, modulus of elasticity and tensile strength divided down respectively by 16.75%, 6.70% and 24.58%. As a combination of coarse and fine agregate, terak nickel increases the compressive strength, modulus of elasticity and splitting tensile strenght, respectively for 10.31%, 9.26% and 6.70%.

HUBUNGAN ANTARA KARAKTERISTIK BETON MENGGUNAKAN AGREGAT KASAR LIGHTWEIGHT EXPANDED CLAY AGGREGATE (LECA) I Ketut Sudarsana; I Gede Astawa Diputra; Ni Made Dwi Ari Astuti
JURNAL SPEKTRAN Vol 6 No 1 (2018): Vol. 6, No. 1, Januari 2018
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4378.591 KB)

Lightweight concrete is a concrete made of lightweight aggregates and has a volume weight ranging from 1140-1840 kg/m3. This research was conducted to find out the correlation between concrete characteristics using LECA coarse aggregate that proportioned for lightweight concrete mixture according to SNI 03-3449-2002 standard with target compressive strength of 20 MPa, 25 MPa, and 30 MPa. The studied characteristics of the LECA concrete include the value of slump, volume weight, compressive strength, tensile strength, and modulus of elasticity. Each mix proportion was made 8 cylinder specimens of ASTM standard, so there were 24 test specimens for the three studied mixtures. The proportion of concrete mixture obtained for the target strength of 20 MPa is 1: 1.16: 2.46 with the value of cement water ratio (w/c) of 0.6, for the concrete strength of 25 MPa is 1: 0.91: 1.99 with the w/c of 0.52, and for the quality of the strength of 30 MPa is 1: 0.65: 0.94 with the w/c of 0.4. The test results obtained the mixed slump value of 155 mm, 145 mm, and 120 mm for the target concrete strength of 20 MPa, 25 MPa, and 30 MPa, respectively. The volume-weight value of LECA concrete ranges from 1564-1692 kg/m3 so that it is categorized as a lightweight concrete. The concrete compressive strength is 22 to 42% of the target concrete strength, and is categorized as a non-structural concrete. The split test tensile strength is 12 - 18% of its compressive strength. Increasing the value of LECA concrete compressive strength can also increase in its tensile strength and modulus of elasticity. Keywords: lightweight concrete, LECA aggregate, concrete characteristics, compressive strength, tensile strength.

PENGUJIAN KUAT LEKAT BETON BARU SELF COMPACTING CONCRETE (SCC) PADA BETON LAMA I Ketut Sudarsana
Jurnal Teknik Sipil Vol. 14 No. 3 (2017)
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Atma Jaya Yogyakarta

Perkuatan elemen struktur beton bertulang yang telah berdiri sering dilakukan dengan memperbesar dimensinya melalui penambahan ketebalan beton sebesar 50 sampai 80 mm. Perma-salahan yang sering dijumpai pada aplikasi metode ini adalah hasil pengecoran yang keropos se-hingga lekatannya kurang baik. Penelitian ini dilakukan untuk mengetahui kuat lekat dari beton ba-ru SCC pada permukaan beton lama. Sebanyak sembilan buah benda uji prisma ukuran 100x100x500mm dibuat dari dua jenis beton yang berbeda yaitu beton normal (f’c = 22 MPa) dan SCC (f’c = 26,4 MPa). Ada tiga variasi sudut interface (α) yang ditinjau yaitu 60o, 70o dan 75o dengan masing-masing variasi dibuat 3 buah benda uji. Sebelum dilakukan pengecoran beton SCC, permukaan miring beton lama terlebih dahulu dikasarkan sehingga membentuk alur-alur ver-tical, horizontal dan diagonal dengan kedalaman +/- 2,5 mm. Beban konsentrik tekan dikerjakan secara menerus dengan kecepatan standar test silinder beton sampai benda uji runtuh. Tegangan normal (σ) dan tegangan geser (τ) yang dihitung dari gaya aksial maksimum masing-masin benda uji dipakai untuk menentukan nilai kohesi (c) dan sudut geser () beton. Hasil pengujian menun-jukan bahwa nilai kohesi (c) beton SCC dan beton lama adalah sebesar 1.13 MPa dengan sudut ge-ser 53,2o.

Perkuatan Pelat Jembatan Dek Baja dengan Overlay Beton Bertulang Made Sukrawa; I K. Sudarsana; I Wayan Dana
Jurnal Teknik Sipil Vol 18 No 3 (2011)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2011.18.3.2

Abstrak. Penelitian tentang metode perkuatan pelat jembatan komposit dek baja bergelombang (CSD) telah dilakukan dengan mempertebal pelat menggunakan overlay beton bertulang. Pengujian Laboratorium dalam skala 1:2 dilakukan dengan membuat dan menguji 12 komponen pelat komposit tebal 95 mm, lebar 500 mm dan panjang 2 kali 700 mm berupa pelat menerus satu arah. Tiga pelat kontrol dan 9 pelat dengan perkuatan diuji sampai runtuh, delapan pelat diberikan pembebanan awal sampai terjadi retak awal pada daerah tumpuan tengah untuk menirukan pelat yang sudah retak. Analisis dengan model elemen hingga (MEH) menggunakan program LUSAS v 13.57 juga dilakukan sebagai perbandingan. Perilaku lentur pelat akibat dua beban garis diamati dalam bentuk grafik beban-lendutan pada umur beton overlay 3, 7 dan 28 hari, dengan bahan accelerator pada beton overlay. Hasil pengujian menunjukkan bahwa kekuatan dan kekakuan lentur pelat dengan overlay beton meningkat secara meyakinkan dengan nilai masing-masing 45% dan 100% pada umur overlay 3 hari. Pada umur overlay 3 dan 7 hari kekuatan pelat komposit hampir mencapai kekuatan pelat pada umur 28 hari. Model Elemen Hingga memberikan kekuatan dan kekakuan pelat yang lebih besar dari hasil pengujian laboratorium, namun perilaku kedua pelat mirip, dimana, pada pembebanan yang lebih tinggi kekakuan pelat menurun. Abstract. Research on strengthening method of bridge deck with corrugated steel deck by increasing its thickness using reinforced concrete overlay was conducted by casting and testing 12 slab specimens with total thickness of 95 mm, width 500 mm and length 2 times 700 mm, which is a 1:2 scale of continuous one way slab. Three control slabs and 9 strengthened slabs were tested until failure, 8 slabs were preloaded until initial crack occurs on the middle support region to simulate cracked deck. Finite element model (FEM) using LUSAS v 13.57 was also done as comparison. Slab behavior under two strip loadings was recorded as load-deformation graph at concrete overlay age of 3, 7, and 28 days, with accelerator in concrete overlay. Test result showed that the strength and stiffness of deck with concrete overlay improved by 45% and 100%, respectively, at concrete overlay age of 3 days. Interestingly enough, at the overlay age of 3 and 7 days, the strength of composite slab almost reach its 28 days strength. Finite Element Model showed that the deck strength and stiffness are larger than those of the test results, however, their behavior is similar in which, at higher load level, the stiffness of the slab reduce noticeably.

PEMODELAN DAN ANALISIS KINERJA STRUKTUR RANGKA BETON BERTULANG-DINDING PENGISI DENGAN DAN TANPA MENGGUNAKAN BASE ISOLATOR I Ketut Sudarsana; Ida Bagus Dharmagiri; Putu Hendra Kusuma
Jurnal Ilmiah Teknik Sipil Vol 25 No 2 (2021): Jurnal Ilmiah Teknik Sipil, Vol. 25 No. 2, Juli 2021
Publisher : Department of Civil Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITS.2021.v25.i02.p01

Penelitian ini dilakukan untuk mengevaluasi perbandingan kinerja antara struktur rangka beton bertulang-dinding pengisi (RDP) dengan dan tanpa menggunakan base isolator. Dua buah model struktur gedung sekolah empat lantai yaitu struktur dengan perletakan jepit (M1) dan base isolator (M2) dengan denah tipikal beraturan dimodelkan dan dianalisis. Struktur terdiri dari 3 bentang arah X dan Y dengan lebar bentang masing-masing 6 m dan 4 m. Tinggi struktur dari taraf penjepitan adalah 14 m dengan tinggi tiap lantai adalah 3,5 m. Bangunan dianggap berada di wilayah dengan kelas situs D di atas tanah sedang. Pemodelan dan analisis struktur dilakukan secara 3-Dimensi dengan bantuan software commercial dimana dinding pengisi dimodelkan dengan metode strut diagonal. Base isolator yang diperhitungkan adalah jenis Lead Rubber Bearing (LRB) yang didesain untuk mendapatkan kekakuan horisontal dan vertikalnya. Nilai kekakuan tiap base isolator dibedakan berdasarkan gaya aksial yang dipikulnya sehingga berbeda untuk kolom sudut, tepi, dan tengah. Analisis kinerja dari kedua model struktur dilakukan dengan analisis nonlinear static pushover. Evaluasi kinerja struktur berdasarkan ketentuan FEMA 440 Displacement modification. Hasil analisis menunjukkan bahwa simpangan kedua model struktur akibat beban gempa telah memenuhi persyaratan simpangan ijin. Penggunaan base isolator dapat mengurangi simpangan antar lantai dalam arah X dan Y sebesar 20% dan 35% sedangkan waktu getar alami strukturnya meningkat sampai 998,45% dari struktur terjepit. Penggunaan base isolator juga meningkatkan gaya geser yang bekerja sebesar 14% dan 5% masing-masing untuk arah X dan Y. Level kinerja struktur menurut FEMA 440 untuk kedua model adalah level beyond to E (failure) untuk arah X dan Y. Penggunaan base isolator dapat mengurangi tegangan yang terjadi pada dinding strat hingga masing-masing 9,7% dan 2% pada dinding arah X dan Y. Selain itu, penggunaan base isolator juga dapat menurunkan kekakuan struktur hingga 77,81% dalam arah X dan 56,74% dalam arah Y. Kata Kunci : base isolator, dinding strat, analisis Pushover, kinerja struktur

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

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.

PERBANDINGAN PERILAKU STRUKTUR DINDING TERKEKANG DAN RANGKA DINDING PENGISI PADA BANGUNAN 4 LANTAI Ida Bagus Rai Widiarsa; Made Sukrawa; I Ketut Sudarsana; A.A. Ayu Istri Laksemana Dewi
Jurnal Ilmiah Teknik Sipil Vol 27 No 1 (2023): Jurnal Ilmiah Teknik Sipil, Vol. 27 No. 1, Maret 2023
Publisher : Department of Civil Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITS.2023.v27.i01.p07

Perbandingan perilaku struktur dinding terkekang (SDK) dan rangka dinding pengisi (RDP) dilakukan pada bangunan 4 lantai yang berfungsi sebagai apartemen. Sebelumnya, dilakukan validasi dengan membandingkan simpangan model dinding bata terkekang dengan hasil uji laboratorium dari peneliti lain. Hasil validasi menunjukkan, pemodelan SDK menggunakan elemen shell memberikan hasil mendekati hasil uji laboratorium, untuk itu dinding pada SDK dimodel dengan elemen shell sedangkan dinding pada RDP dimodel dengan strat diagonal. Dimensi struktur SDK mengacu pada gedung apartemen IITGN, sedangkan dimensi struktur RDP mengacu pada hasil analisis struktur. Hasil penelitian menunjukkan SDK lebih kaku dibandingan RDP, dengan selisih simpangan sebesar 14,89%. Tegangan maksimum dinding pada SDK lebih kecil dibandingkan tegangan maksimum dinding pada RDP, dimana tegangan maksimum dinding pada SDK 4,5 kali lebih kecil dibandingkan tegangan pada RDP. Namun demikian, tegangan dinding maksimum pada kedua model masih memenuhi batas ijin berdasarkan ACI 530-02. Hasil penelitian juga menunjukkan biaya SDK lebih murah dibandingkan biaya RDP.

STRATEGI PENYULUH BAHASA BALI DALAM MENINGKATKAN KETERAMPILAN BERBAHASA BALI PADA SISWA SEKOLAH DASAR DI DESA BESTALA BULELENG Ketut Sidang Partayasa; Ni Nengah Selasih; I Ketut Sudarsana
Pangkaja: Jurnal Agama Hindu Vol 24 No 1 (2021)
Publisher : UHN IGB Sugriwa Denpasar

Show Abstract | Download Original | Original Source | Check in Google Scholar

Balinese was one of the local languages that needed to be preserved. To preserve them requires the planting of understanding that starts with children. The Balinese language lesson got into the local content, so the Balinese study was short. Given matter does not fit the field of possession. The Balinese textbook was also very scant, and the teacher was a class teacher rather than a field teacher. It is to be the student of sd Bestala. Students in the possession of language materials, the characters and literature of Bali are not at maximum. On the basis of this, the Bali language education program with the Balinese learning group provides an additional Balinese lesson outside school hours. In general, the aim of the study is to learn Balinese will be able to improve the Balinese ability of Bestala elementary students, silirite district, buleleng district. Specifically assessed: 1. The upgrade of the grade school student Balinese language skills at Bestala village, 2. The process of learning Balinese in meningthe Balinese language skills at Bestala village, and 3. The implication of the Balinese skills on elementary students in Bestala village. As for the theories used in this study are structural functional theories, constructive theories and behavioristic.

A SUCCESSION PLANNING MODEL FOR ACADEMIC HEADS Gilbert S. Arrieta; Caridad N. Barrameda; I Ketut Sudarsana
Jurnal Penjaminan Mutu Vol 8 No 1 (2022)
Publisher : UHN IGB Sugriwa Denpasar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25078/jpm.v8i1.769

This study identified the practices, issues and concerns, and key elements of a succession planning model for academic heads for the five private sectarian schools in the Philippines. It was conducted in school year 2018-2019, and participated by fifty-eight (58) religious administrators and lay academic heads and teachers Using the key features of participatory method, workshops, focus group discussion, and interviews were conducted for data gathering. The results showed that the practices in the selection and appointment of academic heads were administration’s preference, and criteria for selection and appointment of academic heads. From these practices, the issues and concerns that emerged were objectivity of decision, professional growth, spirituality and culture, and motivation. The elements of succession planning which are vision-mission, spirituality and culture, institutional policies, processes, and procedures, and professional growth were identified based on the practices, and issues and concerns. From these data, the succession planning model for academic heads was developed. The steps in the succession planning are understand the school organizational culture, build a shared vision, set and implement policies and leadership standards, provide personal and moral development programs, provide leadership development programs, and select and appoint academic heads. All policies and programs of the succession planning model must be anchored on the vision-mission of the schools. The faith and spiritual development programs (for private sectarian schools) or the personal and moral development programs (non-sectarian and public schools) are important in the preparation and appointment of future academic heads.

Co-Authors A. A. Diah Parami Dewi A. A. N. A. Angga Pradhana A.A. Ayu Istri Laksemana Dewi A.A. Ayu Istri Laksemana Dewi A.A.G.A. Yana Amanda, Anastasia Anak Agung Gde Agung Asmara Anak Agung Gede Sutapa Arnawa, I Putu Ayu Swandewi Trikusuma Caridad N. Barrameda D.M Priyantha Wedagama D.P.G Sugupta David Pramono Dewa Ayu Hendrawathy Putri Dharma Putra Dharma Putra Dharmayanti, Gusti Ayu Putu Candra Dwi Wiranata Gd. Astawa Diputra Gede Pringgana Gilbert S. Arrieta Gusti Ayu Rai Mahayani Hendra Wijaksana I Dewa Gede Rat Dwiyana Putra I G. A. Susila I G.N.K. Udara I Gede Adi Susila I Gede Gegiranang Wiryadi I Gede Wira Sayoga I Gusti Ayu Putu Wegie Puryandhari I Gusti Ketut Sudipta I Gusti Ketut Wirawan I K. Ade Siswanta I Made Alit Karyawan Salain I Nyoman Sutarja I P. Alit Suthanaya I Putu Laintarawan I Wayan Dana I Wayan Dana I Wayan Sudithayasa I.B. Dharma Giri I.G.N. Suditha I.N. Lanus Ida Ayu Budiwati Ida Ayu Made Budiwati Ida Bagus Dharma Giri Ida Bagus Ngurah Purbawijaya Ida Bagus Rai Widiarsa K. Astawa Ketut Ardhana Ketut Sidang Partayasa Luh Putu Eka Anggreni Made Respawan Made Sukrawa Made Yani Anggreni Marselinus Anggur Ngganggus Mayun Nadiasa Mulya Dewi N.L.P. Eka Agustiningsih Nanda Dwi Wulan Sari Ni Kadek Armini Ni Luh Putu Pradnyadewi Ni Made Anggreni Ni Made Dwi Ari Astuti Ni Made Tutarani Ni Nengah Selasih Ni Putu Candra Prastya Dewi Ni Wayan Novi Suryantari Putera Kumarayasa Mudita Putu Agus Nusada Putra Putu Deskarta Putu Didik Sulistiana Putu Hendra Kusuma Putu Lokantara Rahayu Ria Kusumawati Saputra, I Gede Yoga Dana Wayan Mustika Yohanes Angga Wijaya

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