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All Journal Jurnal Rekayasa Sipil dan Desain
Fikri Alami
University of Lampung
Civil Engineering, Building, Construction & Architecture

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Review Jembatan Sutami di Bandar Lampung Akhmad Dendi Nosya; Fikri Alami; Surya Sebayang
Jurnal Rekayasa Sipil dan Desain Vol 6, No 2 (2018): Edisi Juni 2018
Publisher : Jurnal Rekayasa Sipil dan Desain

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Many structural systems are available to build a bridge. One of them is prestressed concrete bridge. The purpose of this research is to review the design of prestressed concrete bridge using SAP 2000 ver. 14 software.This research use elastic method on prestressed concrete, and ultimate method on the design of the other structures on the bridge. Whereas finite element analysis (FEA) with SAP 2000 ver.14 is used on traffic load analysis . From the analysis results, the longitudinal girder requires bending reinforcement of 12 D13, skin reinforcement of 6 ∅13, and 18 strand with dia. of 0.5" in each tendon. There is a difference with existing design which use bending reinforcement under the minimum requirement, whereas the strand used, meets the recent code.Slab requires bending reinforcement of ∅16-200, shrinking reinforcement and temperature of ∅13-250, however the existing design used denser reinforcement, this difference is due to changes in the bending reduction factor which follows the recent code of 2013 .Diaphragms requires bending reinforcement of 2 D28, skin reinforcement of 5 ∅13, and shear reinforcement of ∅13-500. this difference is due to changes in the reduction as well. Whereas in the shear reinforcement used by the existing design has met the recent code.Barrier wall requires bending reinforcement of ∅19-150 for the thickening area below the wall, ∅13-150 for the above area, and shear reinforcement of 10 ∅13, thus the reinforcement used by the existing design has met the recent code. The conclusion that can be taken is that the reinforcement used for the main structure component is correct, but some bending reinforcement are used under the need of ρmin and concrete standard of 2013. Keyword : bridge, prestressed concrete, SAP 2000 ver. 14
Studi perkuatan lentur balok beton bertulang menggunakan GFRP (Glass fiber reinforced polymer) dan WM (wiremesh) Klara - Nalarita; Mohammad Isneini; Fikri Alami
Jurnal Rekayasa Sipil dan Desain Vol 7, No 2 (2019): Edisi Juni 2019
Publisher : Jurnal Rekayasa Sipil dan Desain

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This study discusses flexural strengthening of reinforced concrete beams using GFRP (glass fiber reinforced polymer) and wiremesh. The beams are used have dimensions of length 1.7 m, width and height of 15 cm. Beams were tested with two-point system load using a loadingframe. Two types of retrofitting done in this study is the first type of reinforcement used 4 ply GFRP and retrofitting of the second type by using three layers of GFRP and 1 layer wiremesh. The 6 bars are tested, namely two beams without reinforcement, two beams by using reinforcement beam type 1 and 2 by using the retrofitting of type 2.Based on these results, reinforced beams can be increased up to 146% of the beam without reinforcement. Without reinforcement beam flexural failure with crack spreads at constant torque region and enlarged cracks only at one place in the area. While beams with reinforcement debonding all experienced failure at one end reinforcement. Based on the indexvalue of the beam ductility without retrofitting more ductile than the beam using the retrofitting.Keyword: Concrete, GFRP, Wiremesh, debonding, ductility
Evaluasi Kinerja Struktur Gedung Bertingkat Dengan Analisis Time History (Studi Kasus : Rumah Sakit Umum Muhammadiyah Metro) muhamad rifai; Fikri Alami; Mohd Isneini; Madar Helmi
Jurnal Rekayasa Sipil dan Desain Vol 10, No 1 (2022): Edisi Maret 2022
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AbstractIndonesia is an area prone to earthquakes viewed based on its geographical location and the meeting path of the 3 main world plates, one of the impacts of earthquakes is structural damage. Based on the number of earthquake events in Indonesia in the last period and the losses caused, it is necessary to design a building structure that has earthquake resistance. The purpose of this study is to evaluate the performance of high-rise building structures based on time history analysis according to SNI 1726-2019. In this study, the building being reviewed is the Muhammadiyah Metro General Hospital, where time history analysis will be carried out with 5 earthquake records (accelerograms) used, including: El Centro (US, 1940), Chichi (Taiwan, 1999), Mentawai Earthquake ( Sumatera, 2007), Friuli (Italy, 1976), and Superstition Hills (USA, 1987). Structural analysis was calculated using ETABS software in a 3-dimensional model. The results of the analysis are drift, displacement, and base shear. The results of this analysis are used to evaluate the performance of high-rise building structures. The results showed that according to SNI 1726-2019 it is known that the greater the maximum acceleration of the earthquake, the higher the drift value or deviation will also be in the building structure. Deviations that occur in the building structure meet the requirements for deviations between permit levels in accordance with SNI 1726-2019 for the Chi-Chi, Friuli, El Centro, Sumatra and Superstition Hills earthquakes.Keywords: Earthquake, time history analysis, structural performanceAbastrakIndonesia merupakan daerah rawan terhadap gempa bumi ditinjau berdasarkan letak geografis dan jalur pertemuan 3 lempeng utama dunia, dampak gempa bumi salah satunya yaitu kerusakan bangunan struktur. Berdasarkan banyaknya kejadian gempa di Indonesia dalam kurun waktu terakhir serta kerugian yang ditimbulkan, maka diperlukan perencanaan struktur bangunan yang memiliki ketahanan gempa. Tujuan penelitian ini untuk mengevaluasi kinerja struktur bangunan bertingkat berdasarkan analisis time history menurut SNI 1726-2019. Pada penelitian ini gedung yang ditinjau adalah Rumah sakit umum muhammadiyah metro, yang akan dilakukan analisis riwayat waktu dengan 5 rekaman gempa (akselerogram) yang digunakan, antara lain : El Centro (US, 1940), Chichi (Taiwan, 1999), Gempa Mentawai (Sumatera, 2007), Friuli (Italia, 1976), dan Superstition Hills (USA, 1987). Analisis struktur dihitung menggunakan softwere ETABS dalam model 3 dimensi. Hasil dari analisis berupa drift, displacement, dan base shear. Hasil analisis ini digunakan untuk mengevaluasi kinerja struktur bangunan bertingkat. Hasil penelitian didapat bahwa menurut SNI 1726-2019 diketahui bahwa semakin besar percepatan maksimum gempa, maka nilai drift atau simpangan akan semakin besar juga pada struktur gedung. Simpangan yang terjadi pada struktur gedung memenuhi syarat simpangan antar tingkat izin sesuai dengan SNI 1726-2019 terhadap gempa Chi-Chi, Friuli, El Centro, Sumatera dan Superstition Hills .Kata kunci : Gempa bumi, analisis time history, kinerja struktur
Co-Authors Akhmad Dendi Nosya Klara - Nalarita Madar Helmi Mohammad Isneini Mohd Isneini muhamad rifai Surya Sebayang