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ASSESSMENT OF NOMINAL SHEAR STRENGTH OF REINFORCED CONCRETE COLUMN Dea Fauziah Larasati; Harun Alrasyid; Data Iranata
Journal of Civil Engineering Vol 36, No 1 (2021)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v36i1.9090

Abstract

: SNI 2847-2019 and ACI 318-19 have regulated the use of materials in the design for shear strength. This study presents an evaluation of nominal shear strength in Reinforced Concrete (RC) column from SNI 2847-2019 and ACI 318-19 by variants of the RC columns experimental database. RC column variants consist of normal strength and high strength RC column with a total of 162 specimens. Furthermore, the database also provides a variety of shear span to depth ratio and axial-load ratio. In this study, the calculation was carried out the mean and the coefficient of variation of measured to calculated strength ratio  which is according to SNI, ACI, and other experimental models. Both SNI 2847-2019 and ACI 318-19 have 2 different  (concrete nominal shear strength) equations. The calculation results show that the  equation is more conservative in both SNI and ACI compared to other nominal shear strength equations. Overall, the combination of both normal strength and high strength RC columns, the calculation using ACI 318-19 with the first nominal shear strength equation  can be said to be more conservative than any other calculations models. This study also shows that by using the ACI 318-19 model in the second equation  which is used the size effect modification factor , the results do not have a significant effect because the value is close to 1.
STRUCTURAL SYSTEM SIMULATION USING GRID-COMPUTING FRAMEWORK Data Iranata; Radityo Anggoro
Journal of Civil Engineering Vol 29, No 2 (2009)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (881.751 KB) | DOI: 10.12962/j20861206.v29i2.1729

Abstract

A multi-level modeling and simulation method of structural system using grid-computing framework is proposed in this paper. Two levels of parallel processing will be involved in this framework: (1) multiple locally distributed computing environments connected by the local network to form (2) a grid-based cluster-to-cluster distributed computing environment. To successfully perform the simulations, a large-scale structural system is decomposed into the simulations of a simplified global model and several detailed component models with various scales. These correlated multi-scale simulation tasks are distributed amongst clusters and connected together in a multi-level modeling and simulation method and then coordinated over the internet. This paper also presents the development of a grid-computing software framework that can support the proposed simulation approach. The architectural design of the program also allows the integration of several multi-scale models to be clients and servers under a single platform. Additionally, the comparison result between proposed method and assumed exact solution show that the proposed simulation method is appropriate to simulate the response of the structural systems.
Modeling Response of Concrete Material due to Biaxial Loading using Finite Element Method Software Based Data Iranata; Endah Wahyuni; Aniendhita Rizki Amalia; Sylvya Anggraini
IPTEK The Journal of Engineering Vol 2, No 1 (2015)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23378557.v2i1.a465

Abstract

Generally the concrete behavior can be observed by the experimental analysis. However, since the computer technology development has been increased rapidly, the computer simulations are also able to represent the detail behavior of concrete. This paper presents the modeling response of concrete material subjected to biaxial loading using finite element method software based. The plain concrete plates with dimensions 200mm x 200mm x 50mm and 150mm x 150mm x 50mm are analyzed using various combinations of biaxial loading. The results of the biaxial load combinations are covering the three non-linear regions of compression–compression, compression–tension, and tension–tension. The results of finite element analysis are also show good agreement to the experimental results that been taken from the previous study. The comparison results the difference between analytical and experimental study are less than 5%. Therefore, the concrete material model based on this finite element method software can be used to simulate the responses in the real condition
Effects of Vibration Located on the Steel Truss Bridges under Moving Load Mohamad Ibrahim Zaed Ammar; Endah Wahyuni; Data Iranata
IPTEK Journal of Proceedings Series No 1 (2017): The 2nd International Conference on Civil Engineering Research (ICCER) 2016
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1922.579 KB) | DOI: 10.12962/j23546026.y2017i1.2198

Abstract

Structural vibration control as an advanced technology in engineering consists of implementing energy dissipation devices or control systems into structures to reduce excessive structural vibration, enhance human comfort and prevent catastrophic structural failure due to strong winds and earthquakes, among other inputs. When the bridge carries heavy traffic, vibrations in the bridge structural elements subjected to high levels of stress. This tension bridge subjected to fatigue. This paper studies and focus the effects of vibration of steel truss bridges and finally to suggest future directions of research and innovation. The possibilities of modal properties of global and local vibration method in determining the structural changes in the truss bridges discussed located to the results of finite element analysis.
Vulnerability Assessment of Reinforced Concrete Building Subjected to Seismic Loads Using Pushover Analysis Endah Wahyuni; Data Iranata; Heppy Kristijanto
IPTEK Journal of Proceedings Series Vol 1, No 1 (2014): International Seminar on Applied Technology, Science, and Arts (APTECS) 2013
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2014i1.377

Abstract

Buildings should be designed to withstand an earthquake based on earthquake planning standard. However, the references used in the regulation could not show building performance to the actual earthquake directly. Therefore, it required an assessment of the existing buildings, in order to evaluate their vulnerability (structural performance level).This study discussed the vulnerability assessment of reinforced concrete buildings from the analysis of the relationship between base shear and displacement, and any failure that occurred.The first step of the evaluation was analyzed the seismic loads with Static Nonlinear (Pushover) Analysis using SAP2000 software. The pushover analysis results showed the level of damage to assessthe building damages. This research was based on SNI 03-1726-2002, Federal Emergency Management Agency (FEMA) 273/356, FEMA 440, and the Applied Technology Council (ATC)-40. Displacement values obtained from Pushover Analysis compared with the field studies. From the pushover analysis, the results obtained the capacity curve showing the relationships between the base shearsand the displacements, reviewed at each elastic conditions, ultimate, plastic and collapse. The numerical results turned out to be closed to the performance level of the structure in the field. Thus the analysis can be used as a reference on an assessment level of performance and behavior of the existing structure as well as the vulnerability of the structure.
Fluid-Soil-Structure Interaction Phenomena on Vibration Case at Pump Station Building Hendri Hermawan; Data Iranata; Djoko Irawan
IPTEK The Journal for Technology and Science Vol 30, No 3 (2019)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20882033.v30i3.5470

Abstract

Excitation at low-rise reinforced concrete building had occurred within the first-year post-construction phase. It is found that the structures laying on thick soil layer while performing up to 4 kPa water transport activity. Three approaches have been adopted to investigate the dynamic behavior and the interaction the phenomenon commonly called fluid-soil-structure interaction. Applying the finite element computation to represent the dynamic of the soil-fluid and structure, existing and ideal-fixed base condition are modeled and compared each. It was found that the structure’s modes frequencies, much depend on the rigidity of the base and the fluids traffic on the pump station. Time history string of displacements at the arbitrary point shows that the vibration does occurs and it tendentious increase by time
Prediksi Perilaku Lentur Kolom Beton Bertulang Mutu Tinggi Terhadap Kombinasi Beban Perpindahan Monotonik dan Aksial Rendah Muhammad Ali Rofiq; Harun Alrasyid; Data Iranata; Djoko Irawan
Jurnal Aplikasi Teknik Sipil Vol 17, No 1 (2019)
Publisher : Departemen Teknik Infrastruktur Sipil Institut Teknologi Sepuluh Nopember Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (652.954 KB) | DOI: 10.12962/j2579-891X.v17i1.4899

Abstract

Penerapan material mutu tinggi mulai digunakan untuk membatasi luas kolom dilantai bawah struktur gedung tinggi. Spesimen kolom beton mutu tinggi dengan dimensi 600x600x1800 mm akan dimodelkan menggunakan program bantu ABAQUS dengan beban aksial secara konstan dan lateral displacement. Spesifikasi beton mutu tinggi 70 MPa, tulangan longitudinal mutu tinggi (SD685) dan tulangan transversal mutu tinggi (SD785) digunakan pada penelitian ini. Input beban aksial konstan yang digunakan adalah 0,1Agf'cdengan beban lateral displacement sampai gagal. Tujuan penelitian ini adalah untuk mengetahui perilaku hubungan force terhadap displacement kolom beton bertulang mutu tinggi yang terjadi akibat beban perpindahanlateral monotonik dan beban aksial rendah. Pemodelan elemen beton menggunakan solid CD38R dan tulangan menggunakan elemen truss T2D3 dengan mesh 100x100 mm.  Hasil pemodelan kolom beton mutu tinggi menunjukkan bahwa prediksi FEA kolom beton mutu tinggi mempunyai korelasi yang baik dengan hasil eksperimen.
Permodelan Elemen Hingga Hubungan Balok-Kolom yang Menggunakan Headed Bar Yohanes Duran; Harun Alrasyid; Data Iranata
Jurnal Aplikasi Teknik Sipil Vol 18, No 1 (2020)
Publisher : Departemen Teknik Infrastruktur Sipil Institut Teknologi Sepuluh Nopember Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1029.101 KB) | DOI: 10.12962/j2579-891X.v18i1.6034

Abstract

Hubungan balok kolom merupakan bagian dari elemen struktur dalam menahan gempa. Penelitian mengenai hubungan balok kolom telah dilakukan beberapa peneliti dengan melakukan kegiatan eksperimental dan analisa numerik. Pada umumnya kekuatan dari hubungan balok kolom tergantung dari pengangkuran tulangan. Kehadiran headed bar  dapat menjadi alternatif untuk pengangkuran tulangan. Penelitian ini membahas model hubungan balok kolom dengan pengangkuran headed bar pada analisa elemen hingga. Hasil eksperimental dari penelitan mengenai hubungan balok kolom dalam dan luar digunakan dalam analisa elemen hingga. Analisa elemen hingga menggunakan program vector2. Hasil analisa menunjukkan bahwa prediksi perilaku menggunakan analisa elemen hingga memberikan kinerja dan pola retak yang serupa dengan hasil eksperimental
Pengaruh Parameter Track Quality Indeks (Tqi) Terhadap Perilaku Bantalan Beton Wawarisa Alnu Fistcar; Hera Widyastuti; Data Iranata; Catur Arif Prastyanto
Jurnal Aplikasi Teknik Sipil Vol 18, No 1 (2020)
Publisher : Departemen Teknik Infrastruktur Sipil Institut Teknologi Sepuluh Nopember Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (5637.5 KB) | DOI: 10.12962/j2579-891X.v18i1.6274

Abstract

Perhitungan kualitas geometri jalan rel dapat diperoleh dengan menggunakan rumus standar perkeretaapian Indonesia. Hasil perhitungan untuk KA.Galunggung tahun 2018 memperoleh nilai maksimum sebesar 37,44. Sedangkan untuk KA.EM-120 pada tahun 2019 memperoleh nilai maksimum sebesar 40,75. Dari hasil perhitungan kedua kualitas geometri tersebut memiliki perbedaan nilai yang selanjutnya dijadikan tolak ukur untuk pengukuran yang dilakukan secara manual. Nilai geometri aktual selanjutnya di modelkan dengan progam bantu ABAQUS. Dimensi serta propeti material sesuai dengan keadaan yang ada di lokasi penelitian, dimensi bantalan beton tipe N-67 = 2000 x 250 x 215 mm, properti material (Fc’) = 54 Mpa dengan kuat tarik wire prestressed = 1400 Mpa, tipe rel 54 dan material balas yang digunakan sesuai dengan PM.60 tahun 2012. Beban aksial dengan kombinasi  7% Pd, 23% Pd, 40%, serta lateral displacement 0,1 Pd dan 0,2 Pd. Hasil dari analisa adalah tegangan tarik, tegangan tekan serta perpindahan pada struktur atas jalan rel. Tujuan penelitian ini adalah mengetahui pengaruh letak geometri jalan rel terhadap perilaku struktural bantalan beton. Hasil korelasi FEA pada kondisi normal dan perhitungan manual mempunyai perbedaan 4,055 % maka korelasi input material sudah baik. Hasil dari variasi letak geometri menunjukan perbedaan perilaku struktural pada bantalan beton, wire prestressed serta Rel. Pada nilai penyimpangan geometri terbesar (TQI > 40). Hasil tegangan tarik beton 2,878 Mpa, tengangan tekan beton 8,192 Mpa serta perpindahan terbesar 0.00124 mm, sedangkan tegangan tarik rel type 54 adalah 366,814 Mpa. Dari hasil tersebut maka sampai batas penyimpangan geometri yang dipakai di Indonesia, struktur atas jalan rel masih dapat menumpu beban yang bekerja secara optimal.
Analisa Tidak Linier Mekanisme Keruntuhan Jembatan Busur Rangka Baja (A-Half Through Arch) Abdul Rochim; Data Iranata; Bambang Piscesa; Navir Afif Refani
Jurnal Aplikasi Teknik Sipil Vol 17, No 1 (2019)
Publisher : Departemen Teknik Infrastruktur Sipil Institut Teknologi Sepuluh Nopember Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (387.664 KB) | DOI: 10.12962/j2579-891X.v17i1.4764

Abstract

The collapses of steel truss bridges can be caused by some factors such as vehicle overloads, material deterioration (corrosion, fatigue), and unexpected tsunami and/or earthquake loads. However, in this paper, the study is limited only to the failure of a-half through arch bridge due to earthquake loads. The bridge has a 100 m long span and is designed using the response spectrum of Surabaya city, East Java, Indonesia. Static nonlinear push-over analysis is used to investigate the performance and the collapse mechanism of the bridge. The bridge was designed based on SNI 1725-2016 and SNI 2833-2016. From the analysis, the failure of the structural elements occurred in the arch members located somewhere near the end portal. The performance level of the bridge determined using the Capacity Spectrum Method [1] is at the Immediate Occupancy (IO) level."--------------------------------------------------------------------------------"Keruntuhan jembatan bisa disebabkan beberapa faktor seperti beban berlebih, fatik, korosi, gempa bumi dan/atau tsunami. Namun, dalam artikel ini, penelitian dibatasi hanya pada kegagalan jembatan busur dengan tipe a-half through arch bridge yang diakibatkan oleh beban gempa. Jembatan yang ditinjau memiliki bentang 100 m dan didesain sesuai dengan zona gempa kota Surabaya, Jawa Timur – Indonesia. Jembatan didesain dengan menggunakan SNI 1725-2016 dan SNI 2833-2016. Analisa beban dorong tidak linear digunakan untuk mengetahui kinerja dan mekanisme keruntuhan struktur jembatan. Berdasarkan hasil studi menunjukkan bahwa kegagalan elemen struktur jembatan terjadi pada elemen busur dekat portal akhir. Level kinerja struktur jembatan ditentukan dengan Metode Kapasitas Spektrum [1] dan termasuk dalam level Immediate Occupancy (IO).