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All Journal JMTS: Jurnal Mitra Teknik Sipil Jurnal Pendidikan Teknik Bangunan Jurnal Teknik Sipil Kokoh
Budi Kudwadi
Universitas Pendidikan Indonesia
Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Education Engineering Transportation Other

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Journal : Jurnal Teknik Sipil Kokoh

 1 
KARAKTERISTIK BETON GEOPOLIMER PADA AKTIVATOR NATRIUM HIDROKSIDA (NAOH) DAN NATRIUM SILIKAT (NA2SIO3) Ben Novarro Batubara; Istiqomah Istiqomah; Budi Kudwadi; Diza Alfan
Kokoh Vol 20, No 2 (2022): Juli 2022
Publisher : Universitas Pendidikan Indonesia (UPI)

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Abstract

Geopolymer concrete is concrete composed of cystesis material of non-organic materials that go through a polymerization process so that it is environmentally friendly, so it can reduce the amount of carbon dioxide produced in Portland cement in the normal concrete manufacturing process which can cause a greenhouse effect. Geopolymer concrete requires a lot of silica and alumina. In geopolymer concrete, the most common alkaline activators used in geopolymer concrete are Sodium Hydroxide (NaOH) and Sodium Silicate (Na2SiO3). Fly Ash has a lot of silica and alumina and the role of alkali activator to dissolve the elements of silica and alumina. The method carried out is an experiment. This study used a ratio between fly ash and activator of 70%:30%, and used a ratio of activators between Na2SiO3 and NaOH of 5:2, 6:2, 7:2, 8:2, 9:2, with a cylinder test object of 20x10 cm with a test result of 42.71 MPa.Keywords: Activator, Compressive Strength, Geopolymer Concrete,
ANALISIS KINERJA STRUKTUR GEDUNG ASIMETRIS AKIBAT BEBAN GEMPA (Studi Kasus :Gedung Kantor Pelayanan Pemerintah (POLRES) Kota Bekasi) Fajar Abdilah; Istiqomah Istiqomah; Ben Novarro Batubara; Budi Kudwadi; Odih Supratman
Kokoh Vol 20, No 1 (2022): Januari 2022
Publisher : Universitas Pendidikan Indonesia (UPI)

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The infrastucture of high-rise buildings must have an earthquake resistance. As a mitigation effort, a building must be symmetrical. When an earthquake occurs the response of the structure easily predictable. However, along with the development of architectural design, many buildings with irregular shapes (asymmetrical). So, it is necessary to analyze the behavior of structures in irregular buildings. The purpose of this study was to determined the maximum displacement value and a structural performance due to an earthquake loads based on ATC-40. The earthquake analysis used a Response Spectrum and Time History with the help of ETABS V17.0.1 software, case study located in Bekasi City Government Service Office (POLRES) building. The research used quantitative descriptive method. Based on the analysis, the maximum displacement value due to earthquake loads using the Response Spectrum analysis method for the X direction were 74,655 mm and 54,566 mm for the Y direction.Keywords: Asymmetrical, Displacement structure, Earthquake loads, Earthquake Resistance, Structure performance,
EVALUASI KINERJA STRUKTUR BANGUNAN GEDUNG TAHAN GEMPA DENGAN METODE ANALISIS RESPONS SPEKTRUM DAN TIME HISTORY Muhammad Irsan Arrasyid; Istiqomah Istiqomah; Ben Novarro Batubara; Budi Kudwadi
Kokoh Vol 21, No 2 (2023): Juli 2023
Publisher : Universitas Pendidikan Indonesia (UPI)

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Abstract

The city of Bandung is one of the cities that is prone to earthquakes because it is passed by the Lembang fault. Therefore, buildings in the city of Bandung should have implemented the concept of earthquake-resistant buildings in their construction. To avoid the occurrence of damage or collapse of the structure of the building against an earthquake, it is necessary to analyze the building against the earthquake. This study aims to determine how many deviations occur in the building due to the earthquake and the performance of the building structure. The method used is the response spectrum and time history analysis method and then evaluates the performance of the structure against earthquakes using the ATC-40 standard. The building that is the case study is the Directorate of Drugs and the Directorate of Intelligence and Security for the West Java Police, which consists of 5 floors. Structural modeling and analysis were performed using ETABS v20. Earthquake records used are Imperial Valley, Kobe and Trinidad earthquakes. Based on the results of the analysis of the maximum deviation with the response spectrum method 26.74 mm in the X direction and 26.46 mm in the Y direction. Meanwhile, for the time history analysis, it was obtained 33.05 mm in the X direction and 28.96 in the Y direction. The maximum value of the total deviation obtained 0.0016 m and the maximum value of inelastic deviation obtained 0.0014 m so that it shows the level of performance of this building structure based on ATC-40 is Immediate Occupancy (IO), which means the structure is in a safe condition.Keywords : ATC-40, earthquake resistant buildings, spectrum response, time history,
ANALISIS KINERJA STRUKTUR GEDUNG RUSUN ASN 3 AKIBAT BEBAN GEMPA Apriliani, Roski; Kudwadi, Budi; Batubara, Ben Novarro
Kokoh Vol 23, No 1 (2025): Januari 2025
Publisher : Universitas Pendidikan Indonesia (UPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/k.v23i1.80076

Abstract

Rusun ASN 3 Building is a multi-story residential building with height of 54.8 m located in East Kalimantan. For the comfort and safety of the building occupants, an analysis of the effects of earthquake loads is needed. This research analyzed using the response spectrum and time history methods. This research was conducted to determine the maximum drift value and level of structural performance based on ATC – 40. The results obtained were that the maximum drift value due to spectrum response earthquake was 41.6130 mm for X direction and 48.9380 mm for Y direction. The maximum drift value due to time history earthquake, for Chuetsu-oki earthquake it was 33.7160 mm in X direction and 55.3960 mm in Y direction; for Kushirooki earthquake it was 40.9760 mm in X direction and 39.9820 mm in Y direction; for Miyagi_Pre.Off earthquake, it was 53.5150 mm in X direction and 42.9820 mm in Y direction. The level of structural performance of the building due to earthquake loads, was at the Immediate Occupancy (IO) performance level, which means the building was still able to withstand the forces of the earthquake that occurred.Keywords :  ATC-40, Spectrum Response, Time History, Dynamic Earthquake, Structural Performance
Co-Authors Apriliani, Roski Ben Novarro Batubara Diza Alfan Fajar Abdilah Istiqomah Istiqomah Istiqomah M. Ridwan Mohammad Afnan Muhammad Irsan Arrasyid Odih Supratman Parmono Parmono Raihan Dermawan, Muhamad Sri Rahayu