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All Journal Jurnal Ilmiah Teknik Sipil Jurnal Spektran Paduraksa : Jurnal Teknik Sipil Universitas Warmadewa Jurnal Teknik Gradien Jurnal Ilmiah Telsinas Elektro, Sipil dan Teknik Informasi Jurnal Abdi Dharma Masyarakat Jurnal Ilmiah Kurva Teknik Reinforcement Review In Civil Engineering Studies and Management Geosfera Indonesia
I Gede Gegiranang Wiryadi
Program Studi Teknik Sipil Fakultas Teknik Universitas Mahasaraswati Denpasar
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Transportation

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3-DIMENTIONAL MODELING OF CYLINDRICAL CONCRETE UNDER AXIAL COMPRESSION WITH VARIATIONS OF MESH ELEMENT TECHNIC AND EFFECT OF REDUCED INTEGRATION I Gede Gegiranang Wiryadi
Jurnal Ilmiah Teknik Sipil Jurnal Ilmiah Teknik Sipil, Vol. 25, No. 1, Januari 2021
Publisher : Department of Civil Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITS.2021.v25.i01.p06

Abstract

Penelitian dengan metode numerik menggunakan program komputer mengalami peningkatan dalam beberapa tahun terakhir dalam berbagai bidang termasuk bidang material struktur. Namun, analisis secara numerik tersebut masih perlu dikembangkan dalam hal teknik pemodelan agar mendapatkan hasil sesuai dengan kondisi sebenarnya. Pada paper ini disajikan pemodelan beton berbentuk silinder secara numerik menggunakan program komputer berbasis elemen hingga, Abaqus®. Teknik pemodelan ditinjau pada teknik mesh element dan efek reduksi integrasi hourglass. Benda uji pemodelan berupa beton silinder berukuran 150 mm x 300 mm dengan mutu 25 MPa. Perilaku plastis beton dimodel dengan fitur concrete damage plasticity (CDP). Hasil analisis menunjukkan reduksi-integrasi hourglass control memberikan efek puncak beban lebih rendah pada kondisi material melewati batas elastis. Sedangkan teknik mesh yang lebih baik adalah menggunakan bentuk hexahedral 8-noded karena lebih stabil dan efek reduksi-integrasi dengan hourglass control dapat bekerja.
EFEK PENAMBAHAN DINDING GESER ATAU PERIMETER BEAMS TERHADAP PERILAKU DINAMIS STRUKTUR PELAT DATAR EMPAT TINGKAT I Ketut Sudarsana; Ida Bagus Dharma Giri; I Gede Gegiranang Wiryadi
Jurnal Ilmiah Teknik Sipil Jurnal Ilmiah Teknik Sipil, Vol. 18, No. 1, Januari 2014
Publisher : Department of Civil Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (458.398 KB)

Abstract

Flat plate structural system is a plate structural system that supported directly by columns without column heads or drop panels. The advantages of this system are distance between the floors can be shortened, faster construction, ease of architectural work and installation of Mechanical, Electrical and Plumbing Equipment (MEP). However, this system has a weakness on the join (connection of slab-column) that is too flexible and susceptible to punching shear failure especially when the existence of moment due to earthquake. This study investigates the changes on dynamic behaviors of flat plate structures when it is added lateral stiffeners such as shear walls or perimeter beams in terms of its natural period, base shear force, floor displacement, and a change on the forces of the structural elements. The structure of the building being simulated is regular structure consisting of 4 floors with 3 meter floor to floor space and 4 spans along X axis direction (Lx = 6 m) and 3 spans along Y axis direction (Ly = 5 m). The building is a hotel, which stands on medium soil in Bali Provice. Flat plate structures with additional of shear walls or perimeter beam are designed in accordance with the requirements of SNI 03-2847-2002. Analyses were performed in three dimensions (3D) using commercial software SAP2000 v15, where the three structure models have the same property namelyplate thickness, column dimensions, mass and material properties. Dynamic behaviorsare studied based on time history analysis (integration time step) according to the average acceleration method from Newmark with acceleration record of the El-Centro earthquake 1940. Analysis shows that addition of shear walls or perimeter beam causes the natural period of structure and horizontal displacement decrease, while the base shear force and structural rigidity increase. Moments, shear forces on columns and shear forces on the plate around the column decrease with the addition of shear walls. The addition of perimeter beam increases the moments and shear forces on first floor columns and shear forces on the plate around the column decrease dramatically on the edge columns
ANALISIS PENGARUH BENTUK DINDING GESER BETON BERTULANG TERHADAP KAPASITAS DAN LUAS TULANGAN I Gede Gegiranang Wiryadi; I Ketut Sudarsana
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 (243.939 KB)

Abstract

ANALYSIS OF SHAPE EFFECT OF REINFORCED CONCRETE SHEAR WALL DUE TO CAPACITY AND REBAR AREAABSTRACTThere are several way to improve the structural performance of high rise building in anticipate horizontal drift and reduce structure time period, one of the solution is by adding the shear wall. Shear wall has many type if it divided by it’s shape, including I-Shape, L-Shape, T-Shape and IWF-Shape that can be adapted with the available plan and building shape. The shape difference of shear wall is linear with the difference of shear wall capacity in enduring the forces and the difference of rebar area. By using S-concrete version 7.02 when modelling 4 type of shear walls that given the same axial force and moment and the same materials, it can be concluded that the biggest axial forces and moment capacity is on the I-Shape shear wall as evidenced by axial: momen ratio compare to the capacity as big as 0.71, followed by IWF-Shape (0.86), and L-Shape and T-Shape (both 0.96). Evaluated from total of rebar area, starting from the smallest, I-Shape shear wall with area 29166 mm2, followed by L-Shape (36666 mm2), T-Shape (40833 mm2), and IWF-Shape (51250 mm2).
ANALISIS PERILAKU HUBUNGAN PELAT-KOLOM TEPI STRUKTUR PELAT DATAR MENGGUNAKAN CONCRETE DAMAGE PLASTICITY (CDP) DALAM ABAQUS I Ketut Sudarsana; I Gede Gegiranang Wiryadi; I Gede Adi Susila
JURNAL SPEKTRAN Vol 5 No 2 (2017): Vol. 5, No. 2, Juli 2017
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (875.439 KB)

Abstract

This research was done to investigate the behavior of edge slab-column connection of flat plate structure using the CDP features of ABAQUS software. Experimental specimen obtained in the literature was modelled in ABAQUS software with CDP features to define the concrete inelastic behavior. The investigated slab-column connection is an edge slab-column subassembled connection having slab dimension of 1020 mm x 1540mm, slab thickness of 120 mm, column dimension of 250 mm x 250mm and column height of 1520 mm. The vertical load and unbalanced moment were applied through the column ends. The vertical load works in the direction perpendicular to slab surface, and the unbalanced moment perpendicular to slab free edge that is obtained from a couple of horizontal forces acting in opposite direction. As many as 22 models were analyzed for five variations on CDP parameters and mesh size. The parametric values of the CDP were varied to obtained the analysis results predict well the experimental results. The analysis shows that the parametric values of CDP such as viscosity (µ) of 0,00005, dilatation angle (?) of 40°, using tension strain to define tension behavior of concrete, and considering damage parameter due to compression and tension give the analysis results of the behavior of edge slab-column connections close to experimental result. Key words: edge slab-column connections, unbalanced moment, punching shear, abaqus, concrete damage plasticity
STUDI ANALITIKAL PERILAKU DAN KINERJA STRUKTUR RANGKA DINDING PENGISI DENGAN BUKAAN SENTRIS I Putu Agus Putra Wirawan; I Ketut Diartama Kubon Tubuh; I Gede Gegiranang Wiryadi
PADURAKSA: Jurnal Teknik Sipil Universitas Warmadewa Vol. 11 No. 1 (2022)
Publisher : Program Studi Teknik Sipil, Fakultas Teknik dan Perencanaan, Universitas Warmadewa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1010.116 KB) | DOI: 10.22225/pd.11.1.4256.49-56

Abstract

This study aims to compare the open frame structure (OF) with the centric perforated infill wall frame structure (IF) with reinforcement around the opening. Validation of the model on the results of laboratory tests was carried out. Next, a simple frame model is made to make an equation for the width of the diagonal strat. Single-stage IF is also made with an aperture ratio of 10% to 60% at 10% intervals and diagonal strat angles of 33°, 39°, 45°, 51°. The infill wall is made by modeling the diagonal strat and shell elements. After obtaining the strat width formula, it continues with applying the formula in modeling a three-story frame structure with varying diagonal strat angles. The results obtained are IF modeling with shell and strat diagonal elements that can follow the results of laboratory tests. From the analysis of the width of the diagonal strat, the formula Wco = (d/4tanØ)·Cc, where d is the length of the diagonal; Cc is the coefficient of stiffness of the wall (Cc = 1.2022r2-2.0953r + 1.045); r is the opening wall ratio; Ø is a diagonal angle. The application of the strat width formula shows the behavior of the strat model coincides with the shell element model. The strength of the structure increases 57%-86% after the addition of walls. The difference in drift ratio shows that the diagonal strat angle is inversely proportional to the strength of the structure that occurs.
LEVEL KINERJA STRUKTUR GEDUNG FAKULTAS PARIWISATA UNIVERSITAS UDAYANA BERDASARKAN FEMA 356 DAN ATC-40 I Gede Gegiranang Wiryadi; I Putu Agus Putra Wirawan; I Ketut Diartama Kubon Tubuh; I Made Andika Candra
Jurnal Teknik Gradien Vol 14 No 1 (2022): Jurnal Teknik Gradien
Publisher : Fakultas Sains dan Teknologi Universitas Ngurah Rai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47329/teknikgradien.v14i1.832

Abstract

Desain berbasis kinerja adalah desain struktur yang menunjukkan tingkat kerusakan suatu struktur akibat beban gempa lateral. Tingkat kerusakan harus dinyatakan dengan tingkat kriteria atau performance level. Penelitian ini mengambil studi kasus Gedung Fakultas Pariwisata Universitas Udayana yang terletak di Jalan Kampus Bukit Jimbaran, Badung, Bali. Menurut SNI 1726:2012, fungsi gedung ini sebagai fasilitas pendidikan termasuk dalam kategori risiko IV, yang berarti gedung ini memiliki risiko tinggi terhadap nyawa manusia saat terjadi gempa. Bangunan ini perlu dianalisis dalam keadaan non-linier dengan menggunakan metode analisis static-pushover, sehingga dapat ditentukan tingkat kinerjanya. Analisis kinerja dilakukan dengan mengikuti ketentuan ATC-40 dan FEMA 356 yang sudah tersedia dalam software SAP2000. Performance point dengan analisis pushover ditentukan menggunakan metode kapasitas spektrum ATC-40 dan menunjukkan nilai total drift maksimum 0,0056 m pada arah X dan 0,0049 m pada arah Y. Berdasarkan kriteria pada ATC-40, kinerja struktur gedung berada pada tingkat Immediate Occupancy (IO). Sedangkan berdasarkan metode koefisien perpindahan FEMA 356 didapatkan hasil target perpindahan pada arah X sebesar 0,125 m dan pada arah Y sebesar 0,098 m. Target perpindahan pada arah X dan Y kurang dari 1% dari tinggi bangunan, sehingga bangunan tersebut masuk dalam level kinerja Immediate Occupancy (IO).
ANALISIS DAN PERENCANAAN STRUKTUR GEDUNG MENGGUNAKAN BALOK DAN PELAT BETON PRATEGANG I Gede Gegiranang Wiryadi; I Wayan Giatmajaya; I Putu Adi Sadu Gunawan
Jurnal Ilmiah Kurva Teknik Vol. 10 No. 1 (2021): Jurnal Ilmiah Kurva Teknik
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Mahasaraswati Denpasar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (532.682 KB) | DOI: 10.36733/jikt.v10i1.2140

Abstract

Beams and plates are the dominant structural elements that receive unidirectional loads, so it is possible to use a system of prestress compared to columns. In this study, the analysis and design of prestressed beams were carried out in a building that functions as a hospital and previously analyzed using ordinary reinforced concrete. Beams and plates use a composite system and a prestressive system. The beam and plate are analyzed in two stages, the production stage and the composite stage after being installed on site. At the production stage, the beam height is reduced by the plate thickness and the load is calculated only for the prestress force and the lifting process. While the composite stage or after being assembled into one with columns and plates, all forces are calculated based on all the working loads. The concrete compressive strength and the yield strength of reinforcement used are 35 MPa and 360 MPa, respectively, while the yield strength of prestressed cables is 1860 MPa. The total loss of pre-stress force is taken as 25% of the total pre-stress force. Three types of beams have a span of 8 m, namely 40 x 60 cm, 35 x 55 cm and 30 x 50 cm after the composite, while the plate thickness is 15 cm after the composite and 10 cm during production. The analysis results show that the stress that occurs in the concrete beam and slab during production and when the composite with a prestressed system does not exceed the allowable stress in accordance with regulatory provisions. So that the prestressed beams and plates with the prestressed system can be applied in a composite system to the building structure and do not exceed the allowable stress limit for receiving loads.
ANALISIS DAN PERENCANAAN BALOK BETON BERTULANG DENGAN SISTEM PRECAST IN SITE I Made Letra; I Gede Gegiranang Wiryadi; I Gede Oka Darmayasa; Ni Wayan Yuni Astari
Jurnal Ilmiah Kurva Teknik Vol. 10 No. 1 (2021): Jurnal Ilmiah Kurva Teknik
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Mahasaraswati Denpasar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (442.866 KB) | DOI: 10.36733/jikt.v10i1.2142

Abstract

Reinforced concrete beams in this study are designed precast in site or cast before being installed in position. This beam is made only by casting the beam reduced by the thickness of the plate and without the top reinforcement, while the lower reinforcement and shear reinforcement is still installed as required from the analysis. The goal is to shorten the working time and get better concrete quality. This beam is part of the structural elements of a building that has been designed and analyzed in advance with a computer program based on structural analysis, SAP2000 v.16. Dimensions and reinforcement requirements from the results of the structural analysis are used as references to analyze precast in site beams. Main beam dimensions resulting from building structure analysis are B1, B2, and B3 with dimensions of 300x500 mm, but with different amounts of reinforcement requirements. Meanwhile, the joist (BA) has dimensions of 250x400 mm. Then the precast in site beams B1, B2, and B3 have dimensions of 300x350 mm and joists (BA) have dimensions of 250x250 mm after deducting the plate thickness of 150 mm. After being cast and dried at the planned age, the beam is then lifted and positioned on the column provided, after which the upper reinforcement and slab reinforcement are installed and cast again. Analysis of lifting or erection is also carried out to ensure that the working load does not exceed its capacity. The analysis results show that the precast beam is able to carry all the working loads and the precast in site system can be applied safely.
Analisis Riwayat Waktu Perilaku Struktur Gedung SMA Negeri 9 Denpasar I Gede Gegiranang Wiryadi; I Wayan Giatmajaya; I Putu Agus Putra Wirawan; Ni Made Trangipani
Jurnal Ilmiah Kurva Teknik Vol. 10 No. 2 (2021): Jurnal Ilmiah Kurva Teknik
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Mahasaraswati Denpasar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (606.174 KB) | DOI: 10.36733/jikt.v10i2.3000

Abstract

Indonesia memiliki ancaman gempa bumi yang cukup tinggi karena berada diatas tiga pertemuan lempeng tektonik yaitu lempeng Indo-Australia, Eurasia, dan Pasifik. Jika terjadi gempa bumi, dapat menimbulkan bahaya karena gempa tidak dapat diprediksi secara pasti. Oleh karena itu struktur bangunan harus direncanakan mampu memikul beban dan tahan gempa guna memperkecil risiko korban jiwa dan kerusakan. Struktur bangunan tahan gempa didasari oleh perencanaan yang baik dan sesuai dengan regulasi yang ada. Untuk mengetahui perilaku struktur terhadap gempa perlu dilakukan analisis. Pada penelitian ini dilakukan analisis dengan metode riwayat waktu pada Gedung Ruang Kelas SMAN 9 Denpasar. Analisis ini akan menggunakan tiga rekaman gempa yaitu gempa El-Centro, Kobe dan, Chichi. Dari hasil time history, simpangan antar tingkat arah x maupun y yang terjadi dari ketiga gempa tidak melebihi simpangan izin. Simpangan antar tingkat terbesar untuk gempa El Centro adalah 20,96 mm, untuk gempa Kobe yaitu 16,63 mm dan gempa Chichi sebesar 0,58 mm. Hasil gaya geser didapatkan diantaranya pada Gempa El Centro sebesar 567,739 kN, Kobe 695,680 kN, dan Chichi sebesar 24,320 kN di arah x dan pada arah y El Centro sebesar 556,531 kN, Kobe 716,402 kN, serta Chichi sebesar 22,100 kN.
Analisis dan Perilaku Dinamis Struktur Gedung A Fakultas Ekonomi Universitas Udayana Akibat Beban Gempa Riwayat Waktu I Gede Gegiranang Wiryadi; I Made Sastra Wibawa; Putu Jaya Kusuma
Jurnal Ilmiah Kurva Teknik Vol. 11 No. 1 (2022): Jurnal Ilmiah Kurva Teknik
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Mahasaraswati Denpasar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (603.957 KB) | DOI: 10.36733/jikt.v11i1.3933

Abstract

Gedung A Fakultas Ekonomi Universitas Udayana yang terletak di Bali pada daerah Sudirman dan merupakan daerah rawan gempa yang berfungsi sebagai fasilitas Pendidikan, gedung tersebut termasuk pada kategori resiko IV, menurut SNI 1726:2012. Penelitian ini menggunakan metode Time History Analysis, dengan analisis beban gempa berdasarkan rekaman riwayat waktu gempa yaitu ada tiga dari riwayat beban gempa Elcentro, gempa Kobe dan gempa Chi-chi. Penelitian ini menggunakan software SAP 2000. Gempa yang memiliki pengaruh terbesar pada gedung A Fakultas Ekonomi Universitas Udayana adalah gempa Elcentro dan Kobe. Gaya geser dasar didapat dengan Time History analysis yang tertinggi pada arah X yaitu gempa Kobe X = 1610,226 kN sedangkan pada arah Y yaitu gempa Kobe Y = 1854,099 kN. Simpangan antar tingkat yang didapat dengan Time History analysis menggunakan gempa Elcentro yang terbesar yaitu ada pada (lantai 2 =12,69 mm) di arah X dan (lantai 2 = 13,35 mm) di arah Y. Dan yang terjadi akibat ke tiga jenis gempa tersebut lebih kecil dari gaya geser dasar dan simpangan berdasarkan SNI 1726-2012. Pada percepatan dan kecepatan yang paling tertinggi yaitu gempa Elcentro kecuali pada arah X percepatan yang tertinggi yaitu gempa Kobe. berdasarkan Time History Analysis beban gempa Elcentro, gempa Kobe, dan Gempa Chi-chi cenderung dalam kategori aman.
Co-Authors Aditya, Gede Agus Sukma Yogiswara Cok Putra Wirasutama Eduardus Beyong Henri Meta Kondamay I Dewa Gede Agung Pandawana I GD Yudha Partama I Gede Adi Susila I Gede Eko Wiman , Diangga I Gede Ngurah Sunatha I Gede Oka Darmayasa I Ketut Diartama Kubon Tubuh I Ketut Sudarsana I Ketut Sudarsana I Made Andika Candra I Made Letra I Made Sastra Wibawa I Nengah Edi Adnyana I Putu Adi Sadu Gunawan I Putu Adi Septiawan I Putu Agus Putra , Wirawan I Putu Agus Putra Wirawan I Wayan Giatmajaya I Wayan Prima Widiantara I Wayan Soma Adi Pratama Ida Bagus Dharma Giri Ni Luh Made Ayu Mirayani Pradnyadari Ni Made Trangipani Ni Putu Atika Hanny Vidary Ni Wayan Yuni Astari Pratama, I Wayan Soma Adi Putu Jaya Kusuma Saraswati, Ni Putu Delima Yogeswari Tjokorda Istri Praganingrum Wirawan, I Putu Agus Putra Yoga, I Wayan Gede Darma