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Made Sukrawa
Program Studi Teknik Sipil, Fakultas Teknik, Universitas Udayana
Humanities Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Transportation

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Strengthening Using Type-V Bracing for Structural Integrity of Reinforced Concrete Frame Resists Earthquake Loads Made Sukrawa; I Gede Adi Susila; Aditya Permana Putra
Journal of International Conference Proceedings (JICP) Vol 2, No 1 (2019): Proceedings of the 3rd International Conference of Project Management (ICPM) Bal
Publisher : AIBPM Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32535/jicp.v2i1.434

Abstract

Relatively new seismic code has been introduced in Indonesia (SNI 1726-2012) which affects old structures. Mostly, the existing structures does not meet the requirement of new regulation: overstressed. Therefore, it is important to strengthen reinforced concrete (RC) structure in order to meet the performance level and structural behaviour satisfied. In this study, the retrofitting method was performed by using a type V steel braces both external and internal settlement. Clearly, the advantage of braces is significantly increases lateral capacity where small amount of mass also invoked into the structures. Computer simulation using SAP2000 found that most of the structures have been overstress on its components, indeed reinforcement is necessary with braces. Nonlinear pushover analysis was performed on type-V braces with and without perimeter frames which reviewed structural performances. Evaluation of 3, 5, 8 and 10 storey structures designed under previous code and failures of structural components found after the most recent code to be implemented. Lateral load capacity and structural performance were observed to determine the capability dissipate earthquake energy that occurred in structural components with plastic joints distribution. Results of study provides comparison of behaviour and performance of each model. It found that the ultimate capacity of each model produced can increase base shear up to ± 150% larger compared to the existing structures. From pushover analysis, the curve of each model measured for performance level and it found to be set of the Operational (O), Immediate Occupancy (IO) and it has not been exceeded the Live Safety level (LS) as the result of structural strengthening using bracing. The bracing applied will provide a higher lateral capacity and minimum level of damage.
EVALUASI KINERJA STRUKTUR BETON BERTULANG DENGAN DAN TANPA DILATASI (Studi Kasus: Gedung Lapas Perempuan Tabanan) Putra, Putu Bagus Sayudha; Sukrawa, Made; Susila, I Gede Adi
Jurnal Spektran Vol. 14, No. 1, Januari 2026
Publisher : Program Studi Magister Teknik Sipil Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/

Abstract

The Women's Correctional Facilty (Lapas) building in Tabanan is a multi-storey building with a total length of 51.45 m which is designed using a twin column dilation system. Generally, dilation is applied to buildings with irregular floor plans or lengths exceeding 60 m. Considering that this building has a regular floor plan and less than 60 m span, the effectiveness of using dilation needs to be evaluated to improve efficiency without reducing structural safety. This study compares the performance of the Model with Dilation (MDD) and Model Without Dilation (MTD) against earthquake, thermal, and concrete shrinkage loads. The analysis was carried out using SAP2000 with the Dynamic Response Spectrum and Static Nonlinear Pushover Analysis (SNPA) methods based on SNI 1726:2019 and ATC-40. The thermal load was modeled with ΔT = 4.67°C and concrete shrinkage with a strain of εsh = −0.0003. The results show a maximum ratio MTD deviation of 0.52%, which is below the allowable limit of 0.77%, and both models achieved the Immediate Occupancy (IO) level. Shrinkage analysis increased the MTD beam reinforcement requirement by 21% without any dimensional changes. In terms of efficiency, MTD reduced concrete volume by 8%, making the dilation-free design more optimal, safe, and economical.
ANALISIS STRUKTUR DINDING TERKEKANG MENGGUNAKAN ELEMEN LAYERED SHELL DAN ELEMEN SOLID Ida Ayu Made Budiwati; Wirasukma, I G. A. Dibyacitta; Pringgana, Gede; Sukrawa, Made; Setyana, I Putu Dwi Adi
Jurnal Teknik Sipil Vol. 18 No. 3 (2025)
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/jts.v18i3.10222

Abstract

Confined Masonry (CM) has been recommended for use in low-rise buildings by EERI (2011). Implementing CM in multi-story buildings in Indonesia has yet to be found, and this may be due to no design guidelines. This paper describes a numerical study to develop and calibrate a numerical method suitable for nonlinear monotonic static analysis (pushover analysis) of CM. The research began with validating 2D CM models using layered shell element (MSH) and solid element (MSD) in SAP2000. MSH was able to model the behavior of CM with for masonry and a modification factor of 0.1 E for concrete. In contrast, MSD could simulate CM behavior by gradually reducing the cracked moment of inertia (Icr) and the concrete and masonry's elastic modulus (E). However, the solid elements analysis proved impractical for application in multi-story structures, making the layered shell element more suitable for the analysis of the 3D CM models. Significant stress concentrations were observed at the corners of The CM openings, indicating the necessity for reinforcement around these openings. The analysis results demonstrated that the reinforcement effectively mitigated the risk of failure due to openings. Keywords: confined masonry, layered shell element, solid element, pushover analysis Abstrak: Struktur dinding terkekang (SDK) telah direkomendasikan pemakaiannya oleh EERI, (2011) pada bangunan bertingkat rendah pada daerah rawan gempa. Namun SDK jarang diimplementasikan pada bangunan bertingkat di Indonesia dikarenakan belum ada pedoman perencanaan yang secara eksplisit mengatur mengenai SDK. Oleh sebab itu, studi numerik dilakukan untuk mengembangkan dan mengkalibrasi metode numerik yang sesuai untuk analisis statik monotonik nonlinier (analisis pushover) SDK. Penelitian dimulai dengan validasi model SDK 2D menggunakan elemen layered shell (MSH) dan elemen solid (MSD) pada software SAP2000. MSH dapat memodelkan perilaku SDK dengan nilai modulus elastisitas pasangan bata dan faktor modifikasi 0,1E pada beton. Sedangkan MSD dapat memodelkan perilaku SDK dengan mereduksi Icr dan E material beton dan pasangan bata secara bertahap. Namun analisis dengan metode elemen solid tidak cukup praktis dan terlalu rumit jika diterapkan pada struktur bangunan bertingkat, sehingga pemodelan validasi SDK 3D selanjutnya dianalisis dengan elemen layered shell. Konsentrasi tegangan yang besar terjadi pada sudut-sudut lubang pada SDK sehingga diperlukan perkuatan di sekitar lubang. Hasil analisis SDK dengan perkuatan menunjukkan bahwa perkuatan dapat meminimalisir kegagalan akibat bukaan
Co-Authors A. A. N. A. Angga Pradhana A.A. Ayu Istri Laksemana Dewi A.A. Ngurah Agung Angga Pradhana Aditya Permana Putra Arif Nofiyanto - Bobby Benniardi Hadi Dharma Putra - Gede Arya Wibawa Gede Pringgana I G. A. Susila I Gede Adi Susila I Gede Yoga Pratama I Gusti Agung Adnyana Putera I Ketut Diartama Kubon Tubuh I Ketut Suada I Ketut Sudarsana I Made Alit Karyawan Salain I Nyoman Ardika I Nyoman Sugita I Nyoman Sutarja I Putu Agus Putra Wirawan I Putu Laintarawan I Wayan Dana I Wayan Dana Ida Ayu Made Budiwati Ida Bagus Dharma Giri Ida Bagus Prastha Bhisama Ida Bagus Rai Widiarsa IGD Adi Widyastana Ketut Ardhana L.G. Wahyu Widyarini Made Hendra Prayoga Made Mariada Rijasa Made Yani Anggreni Maya Saridewi Pascanawaty Mayun Nadiasa Nanda Dwi Wulan Sari Ni Nyoman Rita Rahayu P. A. Parmaheni Tirta Sari Pringgana, Gede Putra, Putu Bagus Sayudha Putu Deskarta Putu Dyah Jasmine Pradnyantari Putu Ratna Suryantini Setyana, I Putu Dwi Adi Wirasukma, I G. A. Dibyacitta