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All Journal Jurnal Rekayasa Sipil dan Desain Journal of Advanced Civil and Environmental Engineering
Mohd. Isneini
Lampung University
Civil Engineering, Building, Construction & Architecture Environmental Science

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Analisis Struktur Gedung Bertingkat Rendah Akibat Pengaruh Beban Gempa Dengan Metode Riwayat Waktu Fadila Amelia Karima; Mohd. Isneini; Surya Sebayang; Bayzoni Bayzoni
Jurnal Rekayasa Sipil dan Desain Vol 9, No 4 (2021): Edisi Desember 2021
Publisher : Jurnal Rekayasa Sipil dan Desain

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Abstract

Bangunan bertingkat merupakan bangunan yang rentan apabila terjadi gempa bumi dan berpotensi menimbulkan korban jiwa. Pergerakan tanah akibat terjadinya gempa bumi dapat menimbulkan getaran dan deformasi yang dapat merusak struktur bangunan. Analisis serta evaluasi perlu dilakukan untuk meminimalisir kejadian yang tidak diinginkan. Penelitian ini bertujuan untuk menganalisis struktur dalam memenuhi persyaratan keamanan berdasarkan SNI 1726:2019 dengan tinjauan simpangan antar tingkat dan ATC-40 yang ditinjau berdasarkan maximum total drift. Analisis struktur yang dilakukan menggunakan metode riwayat waktu dengan bantuan software SAP2000. Model gedung dianalisis dengan menggunakan 5 (lima) akselerogram gempa masukan. Percepatan akselerogram yang digunakan sebagai gempa masukan perlu diskalakan terlebih dahulu terhadap taraf gempa rencana sesuai objek penelitian. Dari hasil penelitian ini, didapatkan bahwa akibat pengaruh gempa masukan Imperial Valley, Kobe, Kocaeli, Northridge, dan San Fernando, simpangan antar tingkat yang terjadi masih dalam kategori aman karena tidak melebihi simpangan antar tingkat izin yaitu 48,4615 mm. Gedung termasuk dalam taraf kinerja Immediate Occupancy (IO) berdasarkan ATC-40, nilai maximum total drift berada dibawah batas 0,01.
Analisis Kinerja Struktur Gedung Bertingkat Terhadap Beban Gempa Dengan Metode Pushover Analysis (Studi Kasus: Gedung Rawat Inap Non – Bedah Rumah Sakit Umum Daerah Dr. H. Abdul Moeloek) Risty Amelia Firdha; Mohd. Isneini; Hasti Riakara Husni; Ratna Widyawati
Jurnal Rekayasa Sipil dan Desain Vol 9, No 4 (2021): Edisi Desember 2021
Publisher : Jurnal Rekayasa Sipil dan Desain

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Abstract

AbstractThe condition of the tectonic arrangement is so complex that the Indonesian territory becomes an active seismic area with a high frequency of earthquakes. Considering that earthquakes can cause casualties and damages to infrastructure, it is necessary to analyze the structure of the building using the right method. This study aims to analyze the structure in needed to fulfill the safety requirements based on SNI 1726:2019 with the interstory drift and ATC-40 which is observed based on the maximum total drift and see the mechanism of the collapse that occurs. Structural analysis was carried out using the pushover anaysis method added with a structural analysis program. From the analysis results, the displacement values obtained by the ATC-40 method are 63,939 mm in the x – direction and 85,299 mm in the y – direction. The performance level generated based on this method is immediate occupancy where the structural and non-structural elements experience minimum damage so that the building remains safe for reuse. The structure collapse mechanism shows the concept of a strong column weak beam mechanism. The interstory drift that occurs is still in the safe category because it does not exceed the interstory drift, which is 42 mm. Key words:pushover analysis, performance level, failure mechanism, interstory drift. AbstrakKondisi tatanan tektonik yang begitu komplek menyebabkan wilayah Indonesia menjadi kawasan seismik aktif dengan frekuensi kegempaan yang tinggi. Mengingat gempa bumi dapat mengakibatkan korban jiwa dan hancurnya infrastruktur sehingga diperlukan analisis terhadap struktur bangunan tersebut dengan menggunakan metode yang tepat. Penelitian ini bertujuan untuk menganalisis struktur dalam memenuhi persyaratan keamanan berdasarkan SNI 1726:2019 dengan tinjauan simpangan antar tingkat dan ATC-40 yang ditinjau berdasarkan maximum total drift serta melihat mekanisme keruntuhan yang terjadi. Analisis struktur yang dilakukan menggunakan metode pushover analysis dengan bantuan program analisis struktur. Dari hasil, didapatkan nilai displacement dengan metode ATC-40 sebesar 63,939 mm arah – x dan 85,299 mm arah – y. Level kinerja yang dihasilkan adalah immediate occupancy dimana elemen struktural dan non-struktural mengalami kerusakan minimum sehingga bangunan tetap aman digunakan kembali. Mekanisme keruntuhan struktur menunjukkan konsep mekanisme strong column – weak beam. Simpangan antar tingkat yang terjadi masih dalam kategori aman karena tidak melebihi simpangan antar tingkat izin yaitu 42 mm. Kata kunci: analisis pushover, level kinera, mekanisme keruntuhan, simpangan antar tingkat.
Finite Element Analysis on Reinforced Concrete Beams Strengthened with GFRP (Glass Fiber Reinforced Polymer) Using Software Ridho Surahman; Mohd. Isneini; Fikri Alami
Jurnal Rekayasa Sipil dan Desain Vol 8, No 1 (2020): Edisi Maret 2020
Publisher : Jurnal Rekayasa Sipil dan Desain

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Abstract

In testing reinforced concrete beams strengthened with 4 layers of GFRP can increase the maximum load up to 112% (Nalarita, 2019). The test can be done by modeling using finite element based software.The beam that is modeled has a dimension of 1,7 m long, 15 cm wide and 15 cm high with 4 layers of 1,3 mm/layer GFRP. The beams that are modeled are only a quarter section because of symmetrical geometry and loading.The percentage difference between the results of modeling and experimental tests on normal beams is 1,49% for deflection in the middle span. The crack that occurs in normal beams in modeling and experimental shows the same crack pattern, which is flexural crack. The percentage difference between modeling and experimental tests on the strengthened beam is 21,81% for the deflection in the middle span. In experimental and modeling tests, the applied GFRP undergoes debonding before the concrete compressive strain reaches its ultimate strain.Keywords: Concrete, GFRP, debonding, modeling
Finite Element Analysis on Reinforced Concrete Beams Strengthened with GFRP (Glass Fiber Reinforced Polymer) Using Software Ridho Surahman; Mohd. Isneini; Fikri Alami
Jurnal Rekayasa Sipil dan Desain Vol 8, No 2 (2020): Edisi Juni 2020
Publisher : Jurnal Rekayasa Sipil dan Desain

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Abstract

In testing reinforced concrete beams strengthened with 4 layers of GFRP can increase the maximum load up to 112%. The test can be done by modeling using finite element based software.The beam that is modeled has a dimension of 1,7 m long, 15 cm wide and 15 cm high with 4 layers of 1,3 mm/layer GFRP. The beams that are modeled are only a quarter section because of symmetrical geometry and loading.The percentage difference between the results of modeling and experimental tests on normal beams is 1,49% for deflection in the middle span. The crack that occurs in normal beams in modeling and experimental shows the same crack pattern, which is flexural crack. The percentage difference between modeling and experimental tests on the strengthened beam is 21,81% for the deflection in the middle span. In experimental and modeling tests, the applied GFRP undergoes debonding before the concrete compressive strain reaches its ultimate strain.Keywords: Concrete, GFRP, debonding, modeling
Study Of The Behavior Of Anchor Connections In Concrete Based On Finite Element Analysis Mildariezka Salsabila Ramadhan; Fikri Alami; Mohd. Isneini; Vera Agustriana Noorhidana
JACEE (Journal of Advanced Civil and Environmental Engineering) Vol 6, No 1 (2023): April
Publisher : Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/jacee.6.1.1-11

Abstract

The anchorage system is one of the techniques used to connect a new structure to the existing structure. The purpose of this study was to determine the behavior between the anchorage connection model in the existing column structure and the new beam using an adhesive anchoring system, and the monolithic column-beam structure model using a program based on the finite element method, Abaqus CAE. The analysis was executed on two models, the monolithic construction model and the anchor joint connection structure model. The same load was applied for both models at the ends of the beams. In the monolithic construction model, the interaction relationship between the column and beam is using a tie constraint, while the structure of the anchor joint connection was using surface-to-surface contact. The epoxy model in anchor joint structure were using a cohesive behavior-contact relationship. As the results of the analysis, it can be concluded that the monolithic construction has stiffer joints compared to the structures with anchor joint connections, it can be seen from the displacement value of monolithic construction is 4.263 mm meanwhile structure with anchor connection is 5.38 mm. The crack pattern in the monolithic construction is in the column face on the area around the beam connection, while in the anchor connection, the crack pattern forms a cone in the area around the column anchor.
Co-Authors Bayzoni Bayzoni Fadila Amelia Karima Fikri Alami Hasti Riakara Husni Mildariezka Salsabila Ramadhan Ratna Widyawati Ridho Surahman Risty Amelia Firdha Surya Sebayang Vera Agustriana Noorhidana