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All Journal Indonesian Journal of Geography Civil Engineering Forum Teknik Sipil TEKNIK MEDIA KOMUNIKASI TEKNIK SIPIL Proceedings of Annual International Conference Syiah Kuala University - Life Sciences & Engineering Chapter Jurnal Pengembangan Energi Nuklir IJOG : Indonesian Journal on Geoscience Journal of Mathematical and Fundamental Sciences Journal of Engineering and Technological Sciences Jurnal Teknik Sipil Civil Engineering Dimension ComTech: Computer, Mathematics and Engineering Applications Narotama Jurnal Teknik Sipil Indonesian Geotechnical Journal Jurnal Jalan Jembatan Journal of Engineering and Technological Sciences
Masyhur Irsyam
Department of Civil Engineering, Faculty of Civil and Environmental Engineering, Institut Teknologi Bandung, Jalan Ganesha No. 10, Bandung 40132
Aerospace Engineering Astronomy Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Physics Social Sciences Transportation Other

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Kajian Pemilihan Koefisien Situs pada Perhitungan Spektra Percepatan Gerakan Tanah di Permukaan Partono, Windu; Irsyam, Masyhur; Sengara, I Wayan; Asrurifak, Muhammad
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 25, Nomor 1, JULI 2019
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (739.358 KB) | DOI: 10.14710/mkts.v25i1.22962

Abstract

SNI 1726:2012 states that surface spectral accelerations SMS (0.2 second) and SM1 (1 second) can be calculated by multiplying site factors Fa (0.2 second) and Fv (1 second) with spectral accelerations SS (0.2 second) dan S1 (1 second). All site factors used by SNI 1726:2012 are adopted from ASCE/SEI 7-10.  In 2013 Stewart and Seyhan proposed new and different site factors compared to ASCE/SEI 7-10. These site factors are then used for developing ASCE/SEI 7-16 with minor improvement for site class SE (soft soil). ASCE/SEI 7-16 states that the site factors for site class SE with SS greater than 1g or S1 greater than 0.2g, shall be calculated using Site Specific Analysis (SSA). The SSA method used for calculating site factor is difficult for ASCE/SEI 7-16 to be implemented in Indonesia. This paper describes the result of SMS and SM1 study at five cities (Jakarta, Bandung, Semarang, Yogyakarta and Surabaya) for site class SC, SD and SE using site factors proposed by Stewart and Seyhan and site factor SNI 1726:2012. The SMS and SM1 at five cities calculated using site factors proposed by Stewart and Seyhan are ±15% differences compared to SMS and SM1 calculated usingSNI 1726:2012 site factors.
Aplikasi Metode HVSR pada Perhitungan Faktor Amplifikasi Tanah di Kota Semarang Partono, Windu; Irsyam, Masyhur; Prabandiyani R.W., Sri; Maarif, Syamsul
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 19, Nomor 2, DESEMBER 2013
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1325.981 KB) | DOI: 10.14710/mkts.v19i2.8421

Abstract

The Horizontal-to-Vertical Spectral Ratio (HVSR) is a simple method for estimating the resonance frequency of sedimentary layers. This method can also be used for estimating the site amplification factor. By using the resonance frequency and the amplification factor HVSR method can also be used for predicting the depth of the bed rock or the thickness of sediment layer (Nakamura, 1989). This paper presents results of HVSR method applied to ambient vibrations for estimating the amplification factor of sedimentary layer. A total of 16 ambient vibration measurements were performed in the City of Semarang to predict the amplification factor for the shallow sedimentary layers.
Reabilitas Daya Dukung Pondasi Tiang Bor Berdasarkan Formula Reese & Wright dan Usulan Load Resistance Factor Design dalam Perencanaan Pondasi Tiang Bor Studi Kasus Proyek Jakarta Lastiasih, Yudhi; Irsyam, Masyhur; Sidi, Indra Djati; Toha, FX
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 19, Nomor 2, DESEMBER 2013
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (475.78 KB) | DOI: 10.14710/mkts.v19i2.8422

Abstract

Design bored pile foundation often use formulae of Reese and wright (1977) on projects heild in Jakarta. The safety factor often use on the design foundation on project in Jakarta are generally 2 or 3. By using advance First Order Liability Method to analysis design foundation, the result showed that the design was very conservative. Proven by the safety index for this design is 2.68 where’s the equivalent of failure probably 3.72 x 10-3, this result is less than requirement of failure probability 1 x 10-2. Lastiasih (2012) propose the use of multiple safety factors by applying Load Resistance Factor Design (LRFD) in accordance with the design of building age so as not to use single safety factor again. Further more the design of bored pile foundation become more efficient.
SEISMIC RESPONSE VALIDATION OF SIMULATED SOIL MODELS TO VERTICAL ARRAY RECORD DURING A STRONG EARTHQUAKE Misliniyati, Rena; Mase, Lindung Zalbuin; Irsyam, Masyhur; Hendriawan, Hendriawan; Sahadewa, Andika
Journal of Engineering and Technological Sciences Vol 51, No 6 (2019)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2019.51.6.3

Abstract

Several soil models, such as linear elastic, equivalent linear, and non-linear models, are employed in seismic ground response analysis. The aim of this study was to validate the seismic responses at ground surface of several soil models with the vertical array record of the Kobe earthquake. One-dimensional seismic response analyses were performed at Port Island using several soil models. The responses at ground surface from the simulated soil models were validated with the vertical array record of the Kobe earthquake. The results showed that the extended hyperbolic model yielded the most appropriate response according to the Kobe earthquake?s recorded motion. This means that this model can be considered a suitable soil model to predict the response of strong earthquakes. In general, the results support the recommendation to select the most appropriate soil model for seismic ground response analysis.
DETERMINATION OF THE SITE AMPLIFICATION ON DEEP SOIL LAYER USING 1-D SITE RESPONSE ANALYSIS (CASE STUDY: JAKARTA CITY, INDONESIA) Delfebriyadi, Delfebriyadi; Irsyam, Masyhur; Hutapea, Bigman M.; Imran, Iswandi; Asrurifak, Muhammad
Journal of Engineering and Technological Sciences Vol 51, No 6 (2019)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2019.51.6.6

Abstract

The dynamic response of deep soil layers is used in the development of microzonation maps. The empirical correlation between standard penetratation blow count numbers and S-wave velocity was derived for practical purposes in site characterization based on local data in a case study in Jakarta, Indonesia. For estimating the intensity of potential earthquake shaking at the ground surface as a function of depth to the bedrock surface layer, 1-D site response analysis was carried out in 5745 simulations. The site amplification values were then evaluated by dividing the spectral acceleration (SA) at ground surface by the SA at rock outcrop. Plots of the SA amplification values at interested depth intervals of the bedrock surface layer were assigned. The results showed that the site amplification values estimated by considering the local depth of the bedrock surface layer were generally smaller than the SA amplification values from the Indonesian seismic building code SNI-1726-2012. Also, there appears to exist a tendency of lower levels of mean regression of amplification, in particular for the soft soil site class.
Proposed long period transition map for new Indonesia earthquake resistant building code based on Indonesia seismic hazard map 2010 Usama Juniansyah Fauzi; Achmad Fauzi; Masyhur Irsyam; F. X. Toha; . Hendriyawan
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 1, No 2 (2011): Engineering
Publisher : Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1570.999 KB)

Abstract

The new method for determining ground-motion parameters in the next edition of the Indonesian Earthquake Resistant Building Code SNI 03-1726-X, which will be issued in this year, has significant changes than the old code. The major changes in SNI 03-1726-X are using Risk-Targeted Maximum Considered Earthquake (MCER) Spectral Response Acceleration maps. These maps developed by Team for Revision of Seismic Hazard Maps of Indonesia were based on probabilistic approach for 2% probability of exceedance in 50 years and deterministic approach by using three-dimensional seismic source models and by considering latest geological and seismological data and fragility curve of buildings. For building design, it has been decided that ASCE 7-10 will be adopted for coming code SNI 03-1725-X. The design philosophy adopted from ASCE 07-10 standard contains a significant addition consisting of a constant-displacement segment of the design response spectrum. This paper presents the proposed parameter TL developed by the author and Disaster Mitigation Research Center ITB (Pusat Penelitian Mitigasi Bencana ITB) to provide more realistic estimates of the ground motions at periods T 4 sec by consisting a constant-displacement segment.
ANALISIS SEISMISITAS UNTUK SEMENANJUNG MURIA Masyhur Irsyam; Agus Himawan; Berny A. Subki; Hadi Suntoko
Jurnal Pengembangan Energi Nuklir Vol 2, No 2 (2000): Juni 2000
Publisher : Pusat Kajian Sistem Energi Nuklir, Badan Tenaga Nuklir Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jpen.2000.2.2.2015

Abstract

ABSTRAK ANALISIS SEISMISITAS UNTUK SEMENANJUNG MURIA. Semenanjung Muria mempunyai potensi untuk menjadi kawasan penting di masa mendatang. Makalah ini menyajikan studi kegempaan untuk daerah Semenanjung Muria mulai dari kondisi geologi, analisis risiko gempa, pembuatan digitasi sintetis serta perambatan gelombang gempa dari batuan dasar ke permukaan. Sumber-sumber gempa, dimana dianggap memberikan kontribusi yang signifikan dalam analisis risiko gempa, mencakup seluruh sumber gempa sampai kedalaman fokus 200 km pada daerah dengan radius 500 km dari Semenanjung Muria. Mekanisme gempa yang terjadi di daerah ini pada umumnya dapat dibedakan atas patahan-patahan di Laut Jawa dan gempa-gempa subduksi di sebeiah seiatan Puiau Jawa. Anaiisis risiko gempa diiakukan berdasarkan teori probabilitas total untuk berbagai periode ulang gempa. Untuk dapat menggambarkan mekanisme gempa yang terjadi sehingga memberikan hasil anaiisis yang sesuai, digunakan dua fungsi atenuasi, yaitu : (i) fungsi atenuasi yang dikembangkan oleh Boore et al. (1997) dan (ii) fungsi atenuasi yang diusulkan oleh Youngs et al. (1997). Input motion yang digunakan untuk perambatan gelombang diperoleh dengan membuat digitasi percepatan sintetik di batuan dasar. Pembuatan digitasi sintetik dilakukan dengan menggunakan teorema gerakan acak. Analisis perambatan gelombang geser dari batuan ke permukaan dilakukan untuk mengetahui respons deposit tanah permukaan akibat motion di batuan dasar. Dari analisis ini diperoleh percepatan maksimum dan spektrum respons elastik di permukaan yang dapat digunakan sebagai input untuk penentuan beban gempa pada bangunan dan untuk anaiisis dinamik.   ABSTRACT SEISMICITY ANALYSIS OF MURIA PENINSULA. Muria Peninsula has a potential value to be an important region in the future. This paper describes seismicity study of the Peninsula starting from its geology, seismic risk analysis, synthetic digitization, and finally seismic attenuation study from base rock to the ground. Seismic sources, which contribute significant values within such analysis cover every single seismic source up to 200-km depth, in 500-km radius of Muria Peninsula. Seismic mechanism which occupy this region in general can be divided into, Java sea faults system and subduction triggered faults of southern Java. Seismic risk analysis was done based on total probability theory under varieties condition for recurrence interval. In order to elucidate real seismic mechanism, two attenuation functions was used : (i) attenuation function developed by Boore et ai. (1997), and (ii) attenuation function developed by Youngs et al. (1997). Motion input was utilized in wave attenuation in order to digitize synthetic velocity in the base rock. To establish synthetic digitization, random mechanism theory was used respectively. Shear wave attenuation analysis from base rock to the upper ground is conducted to understand the response of ground soil layers triggered by such motions. From this analysis maximum acceleration and elastic response was solved, which can be used as input to define structure seismic loads and dynamic analysis.
Development of Nationwide Vs30 Map and Calibrated Conversion Table for Indonesia using Automated Topographical Classification Masyhur Irsyam; Muhammad Asrurifak; Reguel Mikhail; In In Wahdiny; Siska Rustiani; Munirwansyah Munirwansyah
Journal of Engineering and Technological Sciences Vol. 49 No. 4 (2017)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2017.49.4.3

Abstract

A nationwide Vs30 map for Indonesia was developed based on automated topographic classification from 90-m grid digital elevation data and their correlation with Vs30. Automated topographic classification has been proposed by Iwahashi and Pike (2007) and a procedure to convert topographic class into Vs30 maps has been developed by Imamura and Furuta (2015) based on Vs data from J-SHIS (Japan Seismic Hazard Information System). In order to be suitable for Indonesia, calibration work according to Imamura and Furuta's procedure should be conducted since the geotechnical conditions in Japan may not be the same as in Indonesia. This paper presents adjustment of the Vs30 correlation by Imamura and Furuta to convert topographic class into Vs30 and construct a Vs30 map of Indonesia. This correlation was calibrated by using Vs data from BMKG (Indonesian Agency for Meteorological, Climatological, and Geophysics) as well as standard penetration test logs that were collected by the authors. Utilization of local field measurement data will certainly enhance the reliability of the Vs30 map. The developed nationwide Vs30 map will be very useful for disaster mitigation programs and for preliminary design of earthquake resistant buildings and infrastructure in Indonesia.
Determination of The Site Amplification on Deep Soil Layer Using 1-D Site Response Analysis (Case study: Jakarta City, Indonesia) Delfebriyadi Delfebriyadi; Masyhur Irsyam; Bigman M. Hutapea; Iswandi Imran; Muhammad Asrurifak
Journal of Engineering and Technological Sciences Vol. 51 No. 6 (2019)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2019.51.6.6

Abstract

The dynamic response of deep soil layers is used in the development of microzonation maps. The empirical correlation between standard penetratation blow count numbers and S-wave velocity was derived for practical purposes in site characterization based on local data in a case study in Jakarta, Indonesia. For estimating the intensity of potential earthquake shaking at the ground surface as a function of depth to the bedrock surface layer, 1-D site response analysis was carried out in 5745 simulations. The site amplification values were then evaluated by dividing the spectral acceleration (SA) at ground surface by the SA at rock outcrop. Plots of the SA amplification values at interested depth intervals of the bedrock surface layer were assigned. The results showed that the site amplification values estimated by considering the local depth of the bedrock surface layer were generally smaller than the SA amplification values from the Indonesian seismic building code SNI-1726-2012. Also, there appears to exist a tendency of lower levels of mean regression of amplification, in particular for the soft soil site class.
Parametric Study of One-Dimensional Seismic Site Response Analyses Based on Local Soil Condition of Jakarta Rena Misliniyati; Andhika Sahadewa; Hendriyawan Hendriyawan; Masyhur Irsyam
Journal of Engineering and Technological Sciences Vol. 51 No. 3 (2019)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2019.51.3.7

Abstract

Seismic site response analysis is used to estimate the response of soil deposits during seismic loading at any depth of interest and to interpret time histories as well as response spectra. This type of analysis involves many parameters that can affect the character of ground shaking. It is important to know the effect of these parameters in order to perform reliable seismic hazard evaluation at a site. This paper presents the effects of several parameters toward the characteristics of surface response spectra based on the local soil conditions of Jakarta using a one-dimensional (1-D) site response model with total stress approach. A parametric study was performed on two cohesive soil deposit profiles with a different site class, namely medium clay (site SD) and soft clay (site SE). The bedrock layers of both profiles were located at a depth of 300 m. In this study, the analytical methods implemented were the equivalent-linear method and the non-linear method. Several different dynamics soil models were also implemented. In addition, variation of property parameters, such as depth of bedrock, shear wave velocity of bedrock, layer thickness, etc., were studied. The results of this study indicate that all of the studied parameters have a significant effect on the response spectra at the ground surface.
Co-Authors -, Asrurifak . Hendriyawan A. Afnimar ACHMAD FAUZI Agus Himawan Alexander Wicaksono Budiarto Alexander, Nick Andhika Sahadewa Andika Sahadewa Anggun Mayang Sari Arifan Jaya Syahbana Asrurifak - Asrurifak, Mohammad Asrurifak, Muhammad Asrurifak, Muhammad Atyanto Boesono Atyanto Boesono, Atyanto Berny A. Subki Bigman Hutapea Bigman M Hutapea Bigman M. Hutapea Bigman M. Hutapea Bigman Marihat Hutapea Cevin Hartanto Chintya Meidina Azwar Dandung Sri Harninto Delfebriyadi Delfebriyadi, Delfebriyadi Donny T. Dangkua Donny T. Dangkua Dyah Kusumastuti Endra Susila Engkon K. Kertapati Engkon K. Kertapati F. X. Toha Fahmi Aldiamar Fahmi Aldiamar Fahmi Aldiamar, Fahmi Faizal, Lutfi Frida Kistiani FX Toha Goro , Garup Lambang Hadi Suntoko Helmy Darjanto Hendriawan Hendriawan Hendriawan, Hendriawan Hendriyawan Hendriyawan Hendriyawan Hendriyawan Hendriyawan, Hendriyawan Hiroaki Yamanaka Hutapea, Bigman M Hutapea, Bigman M. Hutapea, Bigman Marihat I Nyoman Sukanta, I Nyoman I Wayan Sengara I Wayan Sengara, I Wayan Idrus Muhammad Alatas In In Wahdiny Ina Asha Nurjanah Indra Djati Sidi irwan meilano Iswandi Imran L.L. Makrup L.L. Makrup, L.L. Lastiasih, Yudhi Laura Naomi Roniar Lindawati Lindawati Lindung Zalbuin Mase, Lindung Zalbuin M Ridwan M. Asrurifak M. Asrurifak, M. M. Ridwan M. Syamsul Maarif Maudy Anisa Fanani Mikhail, Reguel Mikhail, Reguel Misliniyati, Rena Mohamad Ridwan Mohammad Anwar Fathoni Mohammad Asrurifak Muhammad Asrurifak Muhammad Asrurifak Muhammad Asrurifak Muhammad Asrurifak Muhammad Asrurifak, Muhammad Munirwansyah Munirwansyah Munirwansyah Munirwansyah Munirwansyah Munirwansyah Nazir, Ramli R. Bambang Boediono Ramli Nazir Ramli Nazir Ramli Nazir Reguel Mikhail Reguel Mikhail Rena Misliniyati Rena Misliniyati Rendy Dwi Kartiko Rustiani, Siska Rustiani, Siska Sahadewa, Andika Shafira Annisa Putri Siska Rustiani Siska Rustiani Sitepu, Arif Rahman Hakim Soebagyo Soebagyo Soebagyo Soebagyo Sri Harninto, Dandung Sri Prabandiyani R.W Sri Prabandiyani R.W. Sri Prabandiyani Retno W Sri Prabandiyani Retno Wardani Sri Widiyantoro Sugeng Krisnanto Suhendra, Andryan Tommy Ilyas Tony Budianto Sihite Undayani Cita Sari Usama Juniansyah Fauzi Victor Victor Wahdiny, In In Widjojo A. Prakoso, Widjojo Windu Partono Yuamar Imarrazan Basarah