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All Journal IPTEK Journal of Proceedings Series Journal of Engineering and Technological Sciences Jurnal Teknik Sipil Journal of Advanced Civil and Environmental Engineering INTEK: Jurnal Penelitian
Muslinang Moestopo
Kelompok Keahlian Rekayasa Struktur, Fakultas Teknik Sipil dan Lingkungan/ Pusat Rekayasa Industri-Laboratorium Mekanika Struktur Institut Teknologi Bandung Jl. Ganesa No. 10 Bandung, 40132.
Civil Engineering, Building, Construction & Architecture Computer Science & IT Engineering Environmental Science

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Kajian Eksperimental Bresing Tahan Tekuk pada Bangunan Tahan Gempa di Indonesia Rhonita Dea Andarini; Muslinang Moestopo
Jurnal Teknik Sipil Vol 20 No 3 (2013)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2013.20.3.5

Abstract

Abstrak. Sistem rangka bresing tahan tekuk merupakan pengembangan dari sistem rangka bresing konsentrik dengan bresing tahan tekuk sebagai elemen utama penyerap energi gempa yang direncanakan leleh pada seluruh inti bajanya. Kajian eksperimental dilakukan terhadap tiga spesimen bresing dengan variasi ukuran diameter pipa pengekang (pipa PVC) dan mortar. Pembebanan siklik secara kuasi-statik dengan kontrol perpindahan dilakukan terhadap ketiga spesimen bresing hingga mencapai keruntuhan. Kinerja yang paling baik dihasilkan oleh bresing berdiameter 216 mm dalam hal kekuatan, kurva histeresis dan kurva backbone. Beberapa kegagalan diamati pada  spesimen bresing tahan tekuk dalam hal perilaku leleh pada daerah peralihan inti bresing yang tidak terkontrol dan keterbatasan kemampuan sistem penahan tekuk. Abstract. Buckling-restrained brace frame is developed from concentrically-braced frame. Buckling restrained brace is the major seismic energy dissipating element that expected to yield in its entire steel core. Experimental work was carried out on three brace specimens with PVC pipe and mortar diameter variations. Quasi-static loading with displacement control was applied to each brace until its failure. The 216-mm diameter brace shows the best performance on its strength, hysteretic curve and backbone curve. Several failures are observed from specimens on uncontrolled-steel-core-yielding behavior and limited buckling-restrained mechanism ability.
Kuantifikasi Besaran dan Distribusi Tegangan Sisa Daerah Pertemuan Pengaku-Badan-Sayap pada Elemen Link Struktur Rangka Baja Berpengaku Eksentrik (SRBE) dengan Metode Difraksi Neutron Kurdi Kurdi; Bambang Budiono; Muslinang Moestopo; Dyah Kusumastuti; M. Refai Muslih
Jurnal Teknik Sipil Vol 23 No 1 (2016)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2016.23.1.2

Abstract

Abstrak. Penelitian ini menfokuskan kajian secara eksperimental terhadap besaran dan distribusi tegangan sisa yang dihasilkan dari proses pengelasan di dan sekitar daerah k dari elemen link. Pengukuran dilakukan dengan Metode Difraksi Neutron menggunakan alat Difraktometer Neutron DN1-M PSTBM BATAN. Sebanyak 15 titik dengan 45 arah pengukuran dilakukan di daerah k dalam arah normal, transversal maupun longitudinal. Hasil eksperimen menunjukkan besaran tegangan sisa tarik sebesar 185 Mpa dan 160 Mpa dalam arah longitudinal dan transversal searah weld toe pengelasan antara badan dan sayap dengan luasan daerah tarik 8 kali dari tebal flange. Untuk pengelasan tegak lurus weld toe diperoleh tegangan sisa tarik sebesar 162 Mpa dan 145 Mpa dalam arah longitudinal dan transversal dengan luas daerah tarik 4 kali dari tebal flange. Besarnya tegangan sisa tarik dan lebarnya daerah tarik mengindikasi daerah k merupakan daerah rawan terjadinya awal dari crack yang dapat menurunkan kinerja dari link. Membuat gap pengelasan antara pengaku dengan flange selebar 4 s/d 5 kali tebal flange dapat meningkatkan kinerja dari link karena dapat meminimalkan besaran dan distribusi tegangan sisa tarik. Abstract. This research focused on the experimental study on the residual stress magnitude and distribution resulted from the welding process in and around the k area of the link element. The measurement was done with the Neutron Diffraction Method using the Neutron Diffractometer DN1-M PSTBM BATAN. A number of 15 points with 45 measurement directions were conducted on the k area in normal, transversal and longitudinal directions. The result of the experiment showed 185 Mpa and 160 Mpa residual stress magnitude in longitudinal and transversal directions in the same directions with the weld toe welding between the web and flange with the extent of the stress area 8 times of the flange thickness. The perpendicular welding of the weld toe resulted in 162 Mpa and 145 Mpa residual stresses in longitudinal and transversal directions with 4 times stress area extent from the flange thickness. The residual stress magnitude and the width of stress area indicated the k area as a vulnerable area to the initial crack occurrence, which may decrease the link performance. Making a welding gap 4 to 5 times of the flange thickness between the stiffeners and the flange may increase the link performance because it may minimize the residual stress magnitude and distribution.
Analytical Investigation of the Applicability of Seismic Devices for Core Frames System in High-Rise Buildings Dyah Kusumastuti; Muslinang Moestopo; Mega Suci Ramadhita; Erwin Lim; Randy Tanderan; Undagi Kausar Akbar
IPTEK Journal of Proceedings Series No 6 (2017): The 3rd International Conference on Civil Engineering Research (ICCER) 2017
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (523.016 KB) | DOI: 10.12962/j23546026.y2017i6.3313

Abstract

The use of link element in high rise buildings has been applied widely and proven to be effective in the eccentric braced frame system. Latest research has also shown that the applicability of link element can be extended to other type of structural systems, such as: coupled wall system or structures with core wall. The research showed that the use of link element could lead to better deformation capacity of the system and the link elements could act as a “fuse” to limit the input of earthquake force. However, the improvement of the seismic behavior may not be effective for any type of structural system. This paper investigates analytically parameters affecting the effectiveness of the application of shear link elements within a structural system. Several parameters being studied are the relative stiffness between link element and structural stiffness, types of structural configuration, etc.
Seismic performance of reinforced concrete bridge using friction pendulum bearing under different friction coefficients James Michael; Muslinang Moestopo; Iswandi Imran; Dionysius M. Siringoringo; Erwin Lim; Shinsuke Yamazaki
JACEE (Journal of Advanced Civil and Environmental Engineering) Vol 5, No 2 (2022): October
Publisher : Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/jacee.5.2.61-73

Abstract

Application of seismic isolation system is important in bridges design, primarily in seismically active countries. Bridges are prone to damage from seismic forces. Elastomeric isolation bearings have been applied in short-span bridges for some time in most countries. These bearings are preferred because of the low maintenance cost. However, these bearings are not reliable when subjected to large displacement and low temperatures. In the other hand, friction sliding bearings shows better performance under the former circumstances despite its use is still limited to long-span bridges and has not been explored further. This paper describes a performance evaluation of seismically-isolated short-span reinforced concrete bridge using friction pendulum system (FPS). Seismic performances of non-isolated and isolated models from the reference bridge functioning as light rapid transit (LRT) bridge in Jakarta are investigated using nonlinear time history analysis. The results demonstrate that isolated bridges with FPS performed better than non-isolated bridges under 1000-year earthquake as shown by reductions of base shear force, absolute deck acceleration, and acceleration amplification ratio. Comparisons of isolated bridges with different FPS friction types and arrangement have demonstrated that the reference bridge with all Type A friction (µ0 = 0.050) applied, performed the best among all other configurations.
The Evolution of Seismic Design Provisions in Indonesia's National Bridge Code Veby Citra Simanjuntak; Iswandi Imran; Muslinang Moestopo; Herlien D Setio
Journal of Engineering and Technological Sciences Vol. 54 No. 6 (2022)
Publisher : Directorate 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.2022.54.6.14

Abstract

To accommodate increased seismic hazards in Indonesia, provisions regarding structural details on seismic regulations have been tightened. In this paper, the variations in seismic hazard and detailing requirements from bridge code era before 1990 to the present was provided. To examine the bridge performance, pushover analysis was carried out based on the latest bridge code SNI 2833:2016/Seismic Map 2017. From the analysis results, the performance of older bridges would typically be less than more recently designed structures.  The performance level of the bridge in the era before SNI 2833:2016/Seismic Map 2017 will be Operational-Life Safety (LS) whereas the performance level of the bridge designed with SNI 2833:2016 will be Elastic – Operational. Referring to NCHRP 949 for bridge performance level evaluation, results show that the performance level of the bridge still satisfies the requirement, which is Life Safety under upper-level earthquake. Therefore, the existing bridge shows adequate capacity under the current seismic load Seismic Map 2017 (7% probability of exceedance in 75 years (RP= 1000 years)). Evaluation of seismic vulnerability needs to be done to ensure the safety of the existing bridges in Indonesia, most of which are located in earthquake-prone areas, especially those that were designed with older version regulations.
Sambungan Balok-Kolom Baja Pemikul Momen Dengan Mekanisme Kuncian Jurnal Teknik Sipil; Prima Sukma Yuana; Muslinang Moestopo; Dyah Kusumastuti; Made Suarjana
Jurnal Teknik Sipil Vol 31 No 1 (2024): Jurnal Teknik Sipil
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2024.31.1.1

Abstract

Abstrak Dua pendekatan dalam desain sambungan tahan gempa telah digunakan sejauh ini. Pertama memanfaatkan balok sebagai sekering, berikutnya adalah melibatkan elemen tambahan sebagai sekering. Tuntutan untuk struktur berkelanjutan, membuat sistem struktur harus mudah dan cepat diperbaiki setelah gempa bumi. Sudah banyak dikembangkan penggunaan elemen tambahan pada komponen sambungan sebagai sekering. Beberapa mekanisme sambungan masih bisa dikembangkan lebih lanjut, salah satunya adalah sistem kuncian. Namun dari keseluruhan penelitian, mekanisme disipasi energi masih dipusatkan pada elemen balok yang dimodifikasi dengan kuncian. Kebaruan dan orisinalitas penelitian ini adalah mengembangkan sistem sambungan dengan kuncian sebagai sekering yang dapat diganti. Model yang diusulkan menunjukkan perilaku seismik yang cukup baik. Sambungan berhasil diatur sehingga kegagalan hanya terjadi pada elemen sekering, elemen balok dan kolom masih pada rentang elastis. Penelitian dilakukan dengan membuat model numerik menggunakan program berbasis elemen hingga Abaqus/Standard. Evaluasi dilakukan pada sistem sambungan berdasarkan kriteria dalam AISC 341 menggunakan pola pembebanan monotonik dan siklik. Parameter yang dianalisis antara lain pola keruntuhan sambungan, kemampuan deformasi, perilaku histeresis beban vs perpindahan, karakteristik kekuatan, karakteristik kekakuan, dan kapasitas disipasi energi. Penyerapan energi pada elemen kuncian berhasil membuat kerusakan hanya terpusat pada elemen sekering, sehingga sesuai dengan keunggulan utama dari sistem ini yaitu kemudahan dalam penggantian elemen sekering yang rusak akibat gempa. Kata-kata Kunci: Sambungan, balok-kolom, sekering, kuncian, penyerapan energi Abstract Two approaches in earthquake-resistant steel beam-column joints have been utilized, one involves using the beam as a fuse, while the other involves additional members as sacrificial elements. The current demand for sustainable structures requires systems that must be easily and quickly repaired after an earthquake. Various types of connections have been developed. Several connection mechanisms can still be developed further, interlock mechanism is one of them. However, from the entire research, the energy dissipation mechanism is still focused on beam elements modified with interlocking. The novelty and originality of this research is to develop a connection system with an interlock as a replaceable fuse element. The proposed model shows quite good seismic behavior. The connection was successfully arranged so that failure only occurred in the fuse element, the beam and column elements were still in the elastic range. The research was carried out by creating a numerical model using the Abaqus/Standard and the evaluation based on the criteria in AISC 341 using monotonic and cyclic loading. The parameters analyzed included connection failure patterns, deformation capability, load vs displacement hysteresis behavior, strength characteristics, stiffness characteristics, and energy dissipation capacity. Keywords: Connection, joint, beam-column, fuse, interlock, replaceable, energy dissipation
An Overview of Commonly Used Steel Beam-Column Connection in Indonesia for Low-Rise Building Yuana, Prima Sukma; Moestopo, Muslinang; Kusumastuti, Dyah; Pratiwi, Naomi
INTEK: Jurnal Penelitian Vol 10 No 1 (2023): April 2023
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/intek.v9i2.4135

Abstract

The Indonesian seismic provision for steel structures was initiated in 2002. The use of steel has also been increasing as a choice of structural material since then. However, there are still many weaknesses in the seismic design of steel structures that have been carried out so far. A lot of beam-column connections in steel buildings in Indonesia use a haunch in a moment-resisting connection system. Haunched systems are not described in AISC 358 as permitted connections for earthquake-resistant buildings. Recently, Europe publishes European Prequalified Steel Joints (EqualJoints). There are four types of connections discussed, and one of them is the haunched type connections. The haunched connection meets the seismic requirements to be suitable for use as an earthquake-resistant connection in Europe. This can be used as a reference if we are going to design a haunched connection in Indonesia. However, special attention should be paid to the details. The bolt configuration, the thickness of the end plates, and the shape of the haunch are not like those commonly used in Indonesia, there must be improvements to be adjusted in EqualJoints. So that the performance of the connection against earthquakes becomes more guaranteed.
Co-Authors Arief Panjaitan Bambang Budiono Bambang Budiono Bambang Budiono Bambang Budiono Bambang Budiono Budiono, Bambang Dionysius M. Siringoringo Dyah Kusumastuti Dyah Kusumastuti Erwin Lim Herlien D Setio Iswandi Imran James Michael Jurnal Teknik Sipil Kurdi Kurdi Kurdi, Kurdi Kusumastuti, Dyah Lim, Erwin M. Refai Muslih Made Suarjana Mega Suci Ramadhita Muslih, M. Refai Prima Sukma Yuana Pusaka, Semerdanta Randy Tanderan Rhonita Dea Andarini Rhonita Dea Andarini, Rhonita Dea Shinsuke Yamazaki Undagi Kausar Akbar Veby Citra Simanjuntak Yuana, Prima Sukma Yurisman Yurisman Yurisman Yurisman Yurisman Yurisman