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OPTIMASI DESAIN KOMPONEN LENTUR GELAGAR PERSEGI BAJA Mutiara, Tria Octa; Putrianti, Pratika Riris; Setiawan, Agustinus Agus
Jurnal Riset Rekayasa Sipil Vol 5, No 2 (2022): Maret 2022
Publisher : Prodi Teknik Sipil Fakultas Teknik Universitas Sebelas Maret Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (836.567 KB) | DOI: 10.20961/jrrs.v5i2.59765

Abstract

The traffic congestion in Indonesia’s big city needs effective infrastructure developments within limited areas. The purpose of this study is to determine an optimum dimension of steel box girder to carry the load on every span length and yield strength of girder based on SNI 1725-2016 and SNI 1729-2015. This study is using the Microsoft Excel program and limited only the compact section of flange and web section. The analysis result shows that higher yield strength the more in weight saving. Within the weight section of the yield strength, 690 MPa has 30% in saving weight compared to 250 MPa. Than the optimal web thickness for the yield strength of 250 MPa is 15 mm and for the yield strength of 690 MPa is 13 mm. The optimum ratio for depth of the web to span length is 1/60 L.
SEISMIC PERFORMANCE ANALYSIS OF CIRCULAR-SHAPED BUILDINGS IN PADANG Parawansyah, Hovifah Indra; Setiawan, Agustinus Agus
Jurnal Riset Rekayasa Sipil Vol 9, No 2 (2026): Maret 2026
Publisher : Prodi Teknik Sipil Fakultas Teknik Universitas Sebelas Maret Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jrrs.v9i2.109532

Abstract

Indonesia is a country with high seismic activity due to its location on the convergence of several tectonic plates, making earthquake-resistant structural design a crucial aspect of construction. This study aims to analyze the seismic performance of circular-shaped buildings based on displacement, story drift, and base shear, as well as to calculate the structural work volume. The modeling was carried out using Robot Structural Analysis Professional (RSAP 2025) software. The earthquake load analysis was performed using the equivalent static lateral force procedure in accordance with SNI 1726:2019, with the research location in Padang City. The analysis results show that the 8-story building experiences a maximum displacement of 22.56 mm in the X direction and 51.08 mm in the Y direction; the 5-story building has a maximum displacement of 6.33 mm in the X direction and 35.86 mm in the Y direction; and the 3-story building experiences 1.37 mm in the X direction and 7.98 mm in the Y direction. The maximum story drift for the 8-story building is 19.91 mm (X) and 43.34 mm (Y); for the 5-story building, 8.36 mm (X) and 48.51 mm (Y); and for the 3-story building, 2.86 mm (X) and 17.71 mm (Y). The base shear values are 4,950.56 kN for the 8-story building, 4,485.20 kN for the 5-story, and 2,691.12 kN for the 3-story building. The concrete requirement ratio is 0.287 m³/m², and the steel reinforcement requirement ratio is 150.31 kg/m³.
EVALUASI KINERJA GEDUNG A UNIVERSITAS PEMBANGUNAN JAYA DENGAN PUSHOVER ANALYSIS BERDASARKAN FEMA 356 Irfan., Muhammad; Setiawan, Agustinus Agus
Jurnal Riset Rekayasa Sipil Vol 7, No 1 (2023): September 2023
Publisher : Prodi Teknik Sipil Fakultas Teknik Universitas Sebelas Maret Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jrrs.v7i1.79200

Abstract

Indonesia is a country with a high potential for earthquake risk, therefore every building must be designed in such a way, so the impact of damage caused by an earthquake can be minimized. Each Existing building structure also needs to be analyzed for its performance against earthquake loads. The main rule in designing an earthquake-resistant building is that structural elements may be damaged but must not fail or collapse during a strong earthquake. This study aims to analyze the performance of building structures based on FEMA 356 standards, by taking a case study of the structure of Tower A of Pembangunan Jaya University. The method used is the pushover analysis method using the Etabs V.16 application. The results of the nonlinear static analysis produce an output value which is then calculated using the FEMA 356 standard. The results of the analysis show that Tower A of Pembangunan Jaya University, which is an open frame structure made of reinforced concrete, has an Immediate Occupancy performance level, which means that if the structure is hitting by an earthquake with return period of 50 years, the building has no significant damage to the structural components. The stiffness and strength of the building is almost the same as before the structure was hit by the earthquake. Meanwhile, the building has a displacement value of 0.383 meters, this value is still smaller than the displacement value based on FEMA 356 calculations which is quite large, namely 0.618 meters in the x direction and 0.542 meters in the y direction.