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Sumargo
Universitas Jenderal Achmad Yani
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Evaluasi Perbandingan Kinerja Bangunan Momen Frame dengan Eccentrycally Brace Frame Sumargo; Rheza Andhy K; Hermansa
Jurnal Teknik: Media Pengembangan Ilmu dan Aplikasi Teknik Vol 7 No 2 (2008): Jurnal Teknik - Media Pengembangan Ilmu dan Aplikasi Teknik
Publisher : Fakultas Teknik - Universitas Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26874/jt.vol7no2.283

Abstract

Generally, earthquake resistant design is based on elastic structural analysis with load factor to simulate ultimate condition. Actually, behavior of collapse structures during earthquake is in-elastic. Evaluation to predict in-elastic condition of structures during earthquake is needed in order to guarantee that it can perform well during earthquake. Analysis and performance evaluation can be done with pushover analysis given in SAP2000, while evaluation of performance point must be determined manually with various methods (except for capacity spectrum method). Pushover analysis is a non linear static analysis as a behavior of structural failure due to earthquake, while performance point is structural maximum displacement during design earthquake. Study on steel frame 3D concludes that performance evaluation for pushover in longitudinal direction according to ATC-40 gives displacement target for moment frame building of 0.054 m, building with eccentrically braced frame (EBF): 0.022 m. Pushover in transverse direction according to ATC-40 gives displacement target for moment frame building of 0.022 m, building with EBF: 0.015 m. According to FEMA 356, displacement target in longitudinal direction for moment frame building: 0.0803 m, building with (EBF): 0.0728 m. For building with moment frame in transverse direction: 0.1183 m, building with (EBF): 0.0614 m.
Analisis Kekuatan Struktur Pasca Retrofitting pada Kerusakan Struktur Balok Beton Bertulang Luluk Kristanto; Sumargo; Muhammad Iqbal
Jurnal Teknik: Media Pengembangan Ilmu dan Aplikasi Teknik Vol 22 No 1 (2023): Jurnal Teknik - Media Pengembangan Ilmu dan Aplikasi Teknik
Publisher : Fakultas Teknik - Universitas Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55893/jt.vol22no1.502

Abstract

The provisions exceed of crack and deflection problems, causing retrofit as best alternative methods more than the conventional. This experimental research determines damage parameters, FRP StrongGlass E450 retrofits design capacity and the behavior of reinforced concrete beams post-retrofitting. Hammer Test results for existing beams with hlap (270 mm) < hmin (286 mm), the minimum concrete quality K.408 not reflecting beam ductile behavior that exceed of allowable cracked and deflection conditions. It has not yet caused collapse, where the tensile test results with fy average 348,47 MPa and fu average 491,32 MPa still exceed the minimum strength, so the BjTP 12 installed contributes maximum for beam ductility. The similarity field deflection values with theoretical analysis and SAP 2000, made SAP 2000 modeling as FRP design, where 1 layer StrongGlass E450, 200 mm wide along 3 beams object, fulfilling flexural strength requirements, shear strength and deflection. Loading test post with sand weighing 4200 Kg (increased 25,98%) in 3 stages, the tensile strength increased 23,879% (117,325 MPa) and strain max. 0,00154 indicates the beam before yielded. Post-density injection could be affects beam stiffness on deflection, pre-retrofit P1 (-34 mm) and P2 (-37 mm), and post-retrofit P1 (-30,8 mm) and P2 (-34,2 mm).
Co-Authors Hermansa Luluk Kristanto Muhammad Iqbal Rheza Andhy K