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All Journal Rekayasa Sipil Journal of Science and Applicative Technology JURNAL SAINTIS

Nugraha Bintang Wirawan

Civil Engineering Department, Institut Teknologi Sumatera, South Lampung, Lampung Province, Indonesia

Author-ID : 2444306

Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Engineering Environmental Science Materials Science & Nanotechnology Mechanical Engineering

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Structural Failure Analysis of Building E ITERA Due to The Pounding Effect with Non-Linear Time History Nugraha Bintang Wirawan; Siska Apriwelni
JURNAL SAINTIS Vol. 20 No. 01 (2020)
Publisher : UIR Press

[EN] Lampung, a province where Institut Teknologi Sumatera (ITERA) is located, is an area that has a high level of seismicity. This research takes a case study of the Building E ITERA which has a dilatation building concept. Due to dilatation, inter-buildings have the risk of collisions because of earthquake loads. The purpose of this study is to determine the value of joint displacement in adjacent buildings when given a dynamic load of Time History and determine whether the adjacent buildings experience a pounding effect. A Time History earthquake load data that has been matched with the Lampung region response spectrum by software is applied to the model of Building E. Building E is modeled according to the as built drawing data and the results of field checking. Structure is analyzed using software. The results of the study showed that the structure of the Building E which was loaded by Loma Prieta earthquake that has been matched would experience inter-building collisions. Further research using earthquake record data taken in areas within certain radius from ITERA is need to be conducted to obtain more accurate results.

Kuat Tekan Beton Mutu Tinggi dengan Memanfaatkan Fly Ash dan Bubuk Kaca Sebagai Bahan Pengisi: High Quality Concrete Compressive Strength by Using Fly Ash and Glass Powder as Filler Siska Apriwelni; Nugraha Bintang Wirawan
JURNAL SAINTIS Vol. 20 No. 01 (2020)
Publisher : UIR Press

(ID) Penelitian ini membahas pengaruh kuat tekan beton mutu tinggi dengan memanfaatkan limbah fly ash dan limbah kaca. Tujuan dari penelitian ini untuk mengetahui kuat tekan beton pada masing-masing variasi, mengetahui persentase campuran beton untuk menghasilkan kuat tekan maksimum, dan mengetahui apakah fly ash dan serbuk kaca efektif digunakan secara bersamaan sebagai bahan campuran beton. Komposisi fly ash terdiri dari 5 variasi yaitu persentase 0%, 5%, 10%, 15%, dan 20%. Sedangkan untuk komposisi serbuk kaca terdiri dari 2 variasi yaitu persentase 5% dan 10%. Jumlah benda uji 30 buah silinder berukuran diameter 15 cm dan tinggi 30 cm dengan 3 benda uji untuk setiap variasi. Perencanaan campuran beton menggunakan SNI 03-2834-2000 yang dimodifikasi. Pengujian kuat tekan diuji pada umur beton 28 hari. Beton dengan fly ash 0% dan serbuk kaca 10% memiliki kuat tekan paling tinggi dibandingkan dengan beton dengan tambahan fly ash, yaitu 46,77%. Selain itu, dapat disimpulkan bahwa semakin bertambahnya jumlah persentase serbuk kaca yang digunakan menunjukkan bahwa kuat tekan beton semakin bertambah juga. Penambahan fly ash pada campuran beton mempengaruhi kuat tekan beton yang dihasilkan. Pada variasi fly ash 0% memiliki kuat tekan tertinggi baik pada saat campuran serbuk kaca 5%dan 10%. Variasi fly ash 15% adalah kondisi optimum campuran beton dengan kuat tekan beton yaitu 43,31 Mpa. Kedua limbah ini dapat dikombinasikan dan dimanfaatkan dengan baik dan digunakan dalam pembuatan beton mutu tinggi. (EN) This study discusses the effect of high quality concrete by utilizing fly ash and glass waste. The purpose of this study is to determine the compressive strength of concrete in each variation, to determine the contribution of concrete to produce compressive strength, and to find out that fly ash and glass powder are effectively used in full as a concrete admixture. Fly ash composition consists of 5 variations, namely the percentage of 0%, 5%, 10%, 15%, and 20%. While for the composition of glass powder consists of 2 variations, namely the percentage of 5% and 10%. The number of specimens is 30 cylinders with a diameter of 15 cm and a height of 30 cm with 3 specimens for each variation. Concrete mixture planning using SNI 03-2834-2000 was developed. Compressive strength testing on concrete age 28 days. Concrete with 0% fly ash and 10% glass powder have the highest compressive strength compared to concrete with additional fly ash, which is 46.77%. In addition, it can increase the amount of glass powder addition that is used to show the concrete compressive strength is increasing as well. The addition of fly ash in the concrete mixture has an effect on the compressive strength of the concrete produced. In the variation of 0% fly ash has the highest compressive strength when the glass powder mixture of 5% and 10%. The 15% fly ash variation is the optimal concrete mixture with compressive strength of 43.31 MPa. These two wastes can be combined and utilized properly and are used in making high quality concrete.

MITIGASI BENCANA MENGGUNAKAN PETA FAKTOR KEAMANAN LIKUIFAKSI BERDASARKAN CONE PENETRATION TEST (STUDI KASUS ITERA) Ahmad Yudi; Sayed Ahmad Fauzan; Nugraha Bintang Wirawan
Rekayasa Sipil Vol 13, No 3 (2019)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2019.013.03.3

Institute Technology of Sumatera (ITERA) located on Sumatera Island, take place on Lampung Selatan (South Lampung. As the coastal region, Lampung Selatan dominated by the sandy soil which allows the possibility of the Liquifaction. The objectives of this research is to mitigate the Liquifaction with analyze using Liquifaction of the safety factor map under the deterministic method. In order to establish the development of Institute Technology of Sumatera (ITERA, this research expected can be used as the consideration to mitigate the damage in relation with the site condition. Deterministic method is the ratio comparison of the Cyclic Resistant Ratio (CRR) and the Cyclic Stress Ratio (CSR) effected by the earthquakes. Cyclic Stress Ratio (CSR) depends on the depth of the soil layer, total vertical pressure, effective vertical pressure, earthquake’s magnitude and the peak ground acceleration. Meanwhile, the Cyclic Resistance Ratio (CRR) calculated by the correlation of the empirical result of CPT. The safety factor value analyzed by the comparison value of CSR and CRR that pointed on 12 CPT location. In result, take the test location on ITERA, it is known that the safety factor in this site is on the safe zone and have been described on the color zone on the map as the disaster mitigation.

ANALISIS PERILAKU STRUKTUR BETON DAN BAJA DENGAN METODE LEVELLING TIME HISTORY (STUDI KASUS GEDUNG E ITERA, LAMPUNG, INDONESIA) Ahmad Yudi; Bayzoni M.T.; Nugraha Bintang Wirawan; Rijuli Nadaek
Rekayasa Sipil Vol 13, No 3 (2019)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2019.013.03.4

The selection of structural material types can be based on analyzing the behavioral of the structure by giving a nonlinear dynamic earthquake load of time history. Because in Indonesia doesn’t have any data of time history record, it is necessary to match the time history data with the design spectrum response. Gedung E ITERA is modeled on reinforced concrete structures and steel structures with open frame models for the same as built drawing. Then can be evaluated the structural behavior that is like mass participation, plastic design, displacement, rotation, and base shear with time history load that will be levelling (levelling time history). With levelling the time history load , it can be found the first structural part that collapses and the maximum load that can be retained by the structure for one of the mitigation effort. The analysis uses a nonlinear dynamic time history analysis with the most dominant combination is earthquake combination. The results of this study show the differences in structural performance, the location of structural failure, and the maximum load that can be retained by the reinforced concrete structure and steel structure of gedung E Itera.

Comparative Story Drift Analysis of High Rise Building Structure between X-Braced Frame and Two Story X-Braced Frame Fauzan Ahmad Sayed; Nugraha Bintang Wirawan; Ahmad Yudi
Journal of Science and Applicative Technology Vol 2 No 1 (2019): ICoSITeR Special Edition
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

The high-rise building of steel structures requires strengthening system so that buildings are capable of carrying earthquake loads that may occur. Strengthening of steel structure building can be applied by providing stiffness of the structure in the form of mounting lateral stiffening system using eccentrically braced frame or concetrically braced frame. The purpose of this study is to analyze performance of story drift of the building structure in the form of horizontal drift values due to earthquake load on the building structure using the stiffening lateral x-braced frame and the two story x-braced frame. The research method using load of dynamic earthquake response spectrum analysis in accordance to SNI 03-1726-2012. The building models have 12 floors, located in Lampung city and was planned behave as an Intermediate Moment Resisting Steel Frame (IMRSF). Building model was designed and anlyzed using ETABS Version 9.7. This study shows story drift in type two story x-braced frame is smaller than the x-braced frame.

KAJIAN NUMERIK STRUKTUR RANGKA TERBREIS EKSENTRIK DENGAN LINK YANG DAPAT DIGANTI Nugraha Bintang Wirawan
Journal of Science and Applicative Technology Vol 1 No 1 (2017): Journal of Science and Applicative Technology August Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Rangka Terbreis Eksentris (RTE) merupakan sistem bangunan tahan gempa yang mempunyai keunggulan dari segi kekuatan dan kekakuan serta mempunyai daktilitas dan kemampuan energi disipasi yang baik dalam kondisi inelastis. Link adalah elemen penting yang berfungsi untuk mendisipasikan energi gempa melalui perilaku inelastis struktur. Kinerja link geser berupa kekuatan, kekakuan, daktilitas dan disipasi energi tergantung pada profil penampang yang digunakan pada link. Kajian ini bertujuan untuk mengetahui perilaku struktur RTE dengan link menggunakan sambungan baut yang menggunakan variasi mutu baja serta pelebaran ujung pelat sayap (Side Extended Plate/SEP) dan tanpa SEP. Analisis dilakukan dengan menggunakan menggunakan software MSC PATRAN/NASTRAN. Sebanyak 8 (delapan) variasi model link dikaji untuk menentukan kinerja struktur yang paling optimum ketika dilakukan pembebanan statik monotonik dan siklik dengan kontrol perpindahan. Hasil menunjukkan bahwa variasi mutu baja link pada pelat sayap dan pelat badan dapat meningkatkan kekuatan, kekakuan, dan daktilitas struktur secara signifikan dibandingkan dengan penggunaan SEP. Kata kunci : Rangka Terbreis Eksentis (RTE), link geser, link sambungan baut dan las, variasi mutu baja, pelebaran pelat sayap

Co-Authors Ahmad Yudi Apriwelni, Siska Bayzoni M.T. Fauzan Ahmad Sayed Rijuli Nadaek Sayed Ahmad Fauzan

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