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Peer Review - STUDI P ARAMETRIK KEKAKUAN, DAKTILITAS DAN KINERJA STRUKTUR SISTEM RANGKA PEMIKUL MOMEN (SRPM) AKIBAT PENGARUH SETBACK DAN DINDING PASANGAN DATA Ade Faisal
KUMPULAN JURNAL DOSEN UNIVERSITAS MUHAMMADIYAH SUMATERA UTARA Vol 10, No 1 (2016): Peer Review - STUDI P ARAMETRIK KEKAKUAN, DAKTILITAS DAN KINERJA STRUKTUR SISTE
Publisher : KUMPULAN JURNAL DOSEN UNIVERSITAS MUHAMMADIYAH SUMATERA UTARA

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Abstract

I/mu pengetahuan dan penerapan tekno/ogi da/am bidang pembangunan konstruksi teknik sipi/ menga/ami perkembangan yang pesat dengan berkembangnya zaman sehingga menuntut kita untuk /ebih kreatif terutama dalam hal perancangan struktur. Di Indonesia, tantangan yang dihadapi dalam kontruksi gedung bertingkat ada/ah adanya resiko akibat gempa. Sa/ah satu metode untuk menganalisis beban gempa adalah analisis pushover.Analisis pushover merupakan prosedur analisis untuk mengetahui peri/aku keruntuhan suatu bangunan terhadap gempa.Penelitian dilakukan untuk mengetahui seberapa besar pengaruh setback dan dinding bata terhadap struktur ditinjau dari kekokuan, daktilitas dan kinerja berdasarkan hasil kurva kapasitas pushover. Stuktur bangunan dimodelkan sebagai portal 2 dimensi yang terdiri dari 2 model yaitu SRPM terbuka dan SRPM berdinding, dan di setiap model terdiri dari 4 buah gedung yaitu rang/co penuh, setback/, setback.2, dan setback 3. Hasil analisis dalam penelitian ini menunjuklcan bahwa kontribusi dinding pengisi yang terbuat dari dinding bata mempengaruhi lcekakuan lateral struktur, serta dengan dilcuranginya setback pada struktw bangunan mengakibatkan ni/ai kekakuan semakin lcecil sehingga nilai daktilitas semalcin besar. Nilai kekalcuan e/astis, kekalcuan dinding parca e/astis don kekakuan pasca elastis yang terbesor ado podo model SRPM berdinding dan yang memiliki ni/ai terkecil ada pada model SRPM terbuka. Ni/ai daktilitas pada model SRP M terbulca terbesar 18.22 di struktur setback3 pada zona gempa 4.Pada model SRPM berdinding nilai terbesamya 15.58 di struktur setbaclc3 pada zona gempa 4.Secara keseluruhan model SRPM terbuka stn.:kturnya masih berada dalam kondisi baik atau aman saat terjadi gempa sedang yaitu zona gempa 4.
THE EFFECT OF BEHAVIOUR FACTOR ON THE SEISMIC PERFORMANCE OF LOW-RISE AND HIGH-RISE RC BUILDINGS Ade Faisal, Ph.D
KUMPULAN JURNAL DOSEN UNIVERSITAS MUHAMMADIYAH SUMATERA UTARA Vol 12, No 1 (2017): THE EFFECT OF BEHAVIOUR FACTOR ON THE SEISMIC PERFORMANCE OF LOW-RISE AND HIGH-
Publisher : KUMPULAN JURNAL DOSEN UNIVERSITAS MUHAMMADIYAH SUMATERA UTARA

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This study investigates the performance of RC buildings designed according to Eurocode 8. Two families of RC buildings (i.e., 3 storey and 18 storey) are investigated using nonlinear static or push over analysis (POA). Each family of the buildings consists of five generic RC models with different behaviour factor namely 1, 1.5, 2, 4 and 6. The effect of behaviour factor to the buildings response characteristic parameters, i.e., elastic and inelastic stiffness, base shear strength at yield and maximum strength level and top displacement ductility are discussed thoroughly in this study. It is found that, the behaviour factor has a significant effect on the performance of RC buildings. Furthermore, this study also propose the relationship between displacement ductility and behaviour factor for high-rise and low-rise RC buildings and this equation which has high correlation factor can be used by designer or engineer to estimate the ductility capacity of low rise and high rise RC buildings based on their designed behaviour factor.
EVALUASI DAKTILITAS PADA BANGUNAN RUMAH TOKO DI KOTA MEDAN Ade Faisal, Ph.D
KUMPULAN JURNAL DOSEN UNIVERSITAS MUHAMMADIYAH SUMATERA UTARA EVALUASI DAKTILITAS PADA BANGUNAN RUMAH TOKO DI KOTA MEDAN
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P embangunan rumah toko (ruko) di Kota Medan berkembang secara pesat. Tetapi sayangnya perencanaan ruko tidak diperhitungkan dengan baik. Kondisi ini dapat berdampak buruk jika terjadi gempa kuat. Perencanaan struktur tahan gempa menurut peraturan terdiri dan tiga parameter utama yaitu kekuatan, kekakuan dan daktilitas. Penulisan makalah ini bertujuan untuk mengetahui perilaku struktur gedung ruko di Kota Medan berdasarkan SNI 03-1726-2002. Parameter yang ditinjau yaitu daktilitas struktur (p). Analisa yang digunakan adalah analisis beban dorong (tidak linear). Ada 2 ruko yang dievaluasi yaitu ruko 4 lantai di J1. Setia Budi dan ruko 3 lantai di Jl. Amir Hamzah. Dari basil yang diperoleh menunjukkan bahwa nilai daktilitas struktur ruko melebihi nilai daktilitas maksimum pada SNI 03-1726-2002.
INFLUENCE OF REPEATED EARTHQUAKES ON THE DUCTILITY DEMAND OF INELASTIC RC BUILDINGS Ade Faisal
KUMPULAN JURNAL DOSEN UNIVERSITAS MUHAMMADIYAH SUMATERA UTARA INFLUENCE OF REPEATED EARTHQUAKES ON THE DUCTILITY DEMAND OF INELASTIC RC BUILDINGS
Publisher : KUMPULAN JURNAL DOSEN UNIVERSITAS MUHAMMADIYAH SUMATERA UTARA

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Current design practice considers the use of single event of earthquake. In fact seismic hazard is a multi events earthquake of the so-called repeated earthquakes. Consequently, the structural behaviour under repeated earthquakes is not clearly understood.
Influence of large dam on seismic hazard in low seismic region of Ulu Padas Area, Northern Borneo Ade Faisal, Ph.D
KUMPULAN JURNAL DOSEN UNIVERSITAS MUHAMMADIYAH SUMATERA UTARA Vol 59 (2011): Influence of large dam on seismic hazard in low seismic region of Ulu Padas Area, Nort
Publisher : KUMPULAN JURNAL DOSEN UNIVERSITAS MUHAMMADIYAH SUMATERA UTARA

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The seismic hazard assessment of a site that lies in the low seismic region affected by the future existence of a large dam has been given less attention in many studies. Moreover, this condition is not addressed directly in the current seismic codes. This paper explains the importance of such information in mitigating the seismic hazard properly. Ulu Padas Area in Northern Borneo is used as an example for a case study of a site classified as a low seismic region. It is located close to the border of Malaysia, Brunei Darussalam, and Indonesia and may have a large dam in the future as the region lies in hilly geography with river flow. This study conducts probabilistic and deterministic seis-mic hazard analyses, and reservoir-triggered seismicity of a site affected by the future existence of a large dam. The result shows that the spectrum acceleration of the maximum design earthquake for the investigated site in the Ulu Padas Area in Northern Borneo is taken from the reservoir-triggered seismicity earthquake at short periods and from the current condition at longer periods.
Peer Review - SELECTION OF MULTIPLE EARTHQUAKES CONSIDERING VERTICAL GROUND MOTION TO STRUCTURES Ade Faisal
KUMPULAN JURNAL DOSEN UNIVERSITAS MUHAMMADIYAH SUMATERA UTARA Vol 12, No 1 (2017): Peer Review - SELECTION OF MULTIPLE EARTHQUAKES CONSIDERING VERTICAL GROUND MOT
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Current earthquake engineering field ignores the vertical ground motion in design and analysis of the structure system even though in actual condition these two phenomena impose the significant effect to the structure system. The repeated earthquake happened everywhere all over the world with the short time interval while earthquake in vertical excitation also reported as quantitatively occur but always ignored. Therefore, this study attempts to assess the behaviour of structures due to multiple earthquakes with vertical component. For that purpose, this study processed and tabulated more than 500 ground motion data that was recorded all over the world. The data was downloaded from Pacific Earthquake Engineering Research center – New Generation Attenuation (PEER-NGA) database, As a result, About 24% (121 records) of the listed earthquake records show V/H value more than 0.67 or 2/3 rules and most of the event occurred with source distance less than 50km. About 8.0% (40 records) of the showed V/H ratio more than 1.0 with the highest ratio is 4.85 named Borrego in 1942. It seems that vertical ground motion were also one of the factor effecting analysis and design of structures.
Prosiding Seminar Nasional HAKI 2014: Indonesia Siaga Gempa, Medan Ade Faisal, Ph.D
KUMPULAN JURNAL DOSEN UNIVERSITAS MUHAMMADIYAH SUMATERA UTARA 2014: TORSI AKTUAL PADA SRPM SIMETRIS
Publisher : KUMPULAN JURNAL DOSEN UNIVERSITAS MUHAMMADIYAH SUMATERA UTARA

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Prosiding ini memuat sejumlah makalah yang membahas bidang ilmu kegempaan, mulai dari seismologi sampai dengan struktur bangunan. Makalah-makalah ini dipresentasikan pada Seminar Nasional HAKI 2014 di Medan.
EVALUASI SIMPANGAN HORIZONTAL PILAR JEMBATAN BETON BERTULANG Ade Faisal, Ph.D
KUMPULAN JURNAL DOSEN UNIVERSITAS MUHAMMADIYAH SUMATERA UTARA Vol 9, No 3 (2015): EVALUASI SIMPANGAN HORIZONTAL PILAR JEMBATAN BETON BERTULANG
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Indonesia merupakan salah satu negara yang tergolong rawan gempa. Gempa dapat menyebabkan kerusakan struktur jembatan beton bertulang. Efek gempa ini mengharuskan jembatan memiliki pilar yang beat untuk menahan pembebanan dan mampu memberikan masa layan mengikutl peraturan yang berlaku. Studi ini bertujuan untuk mengetahui simpangan horizontal dan daktilitas simpangan pilar jembatan beton bertulang yang terletak di tanah lunak dan wilayah gempa 4 untuk berbagai asumsi pemodelan struktur. Asumsi pemodelan dibedakan dengan kondisi pilar jembatan tanpa interaksi pondasi dan dengan interaksi pondasi memakai elemen pegas berdasarkan FEMA 356 dan FEMA 440. Analisa struktur yang digunakan adalah analisa statik tidak limier (Pushover analysis). Hasil studi menunjukkan bahwa simpangan horizontal dan daktilitas simpangan terbesar terjadi pada pilar jembatan interaksi dengan pondasi (hubungan antara pile cap dan pangkal tiang pancang dianggap rigid sedangkan ujung tiang pancang dianggap sendi) berdasarkan FEMA 356. Sedangkan simpangan horizontal dan daktilitas simpangan terkecil terjadi pada pilar jembatan tanpa interaksi pondasi (dasar pile cap dianggap jepit) berdasarkan FEMA 440. Secara keseluruhan daktilitas simpangan pilarjembatan yang diperoleh menunjukkan pada kondisi yang aman.
EVALUASI PERBANDINGAN SIMPANGAN STRUKTUR SRPM AKIBAT PERMODELAN STRUKTUR YANG BERBEDA Ade Faisal, Ph.D
KUMPULAN JURNAL DOSEN UNIVERSITAS MUHAMMADIYAH SUMATERA UTARA Vol 4, No 1 (2018): EVALUASI PERBANDINGAN SIMPANGAN STRUKTUR SRPM AKIBAT PERMODELAN STRUKTUR YANG BE
Publisher : KUMPULAN JURNAL DOSEN UNIVERSITAS MUHAMMADIYAH SUMATERA UTARA

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Struktur bangunan bertingkat rawan terhadap gaya lateral, terutama akibat gaya yang ditimbulkan oleh gempa. Indonesia juga termasuk ke dalam wilayah yang memiliki instensitas terjadi gempa yang tinggi. Dalam menghitung struktur bangunan bertingkat ada 2 cara, yakni dengan sistem rangka pemikul momen (SRPM) dan kombinasi SRPM dengan shear wall. Pada proses perencanaan umumnya dinding geser dimodelkan sebagai element solid pada program komputer. Pemakaian element solid ini akan memakan waktu analisa seiring dengan semakin bertambahnya tinggi bangunan. Dinding geser juga dapat dimodelkan dengan element garis (line). Untuk itu studi ini bertujuan membandingkan hasil yang diperoleh bila dinding geser dimodelkan sebagai element solid dan element garis. Pada studi ini terdapat 3 pemodelan struktur, yaitu 1 model strktur tanpa dinding geser, dan 2 model truktur dengan dinding geser (model dinding geser solid element dan model dinding geser  line element).Semua input beban, tingkat kekakuan dan dimensi struktur adalah sama, yang berbeda hanyalah model shear wall yang digunakan. Gedung ini memiliki tingggi 40 meter (10 lantai), tinggi tiap lantai 4 meter. Berdasarkan hasil analisis tersebut diperoleh bahwa terjadi perbedaan perioda getar, simpangan, gaya geser dasar dan gaya-gaya dalam karena pemodelan sistem struktur penahan gaya geser yang berbeda-beda.
Peer Review - A Comprehensive Study on the Influence of Strength and Stiffness eccentricities to the On-plan Rotation of Asymmetric Structure Ade Faisal
KUMPULAN JURNAL DOSEN UNIVERSITAS MUHAMMADIYAH SUMATERA UTARA 2017: Peer Review - A Comprehensive Study on the Influence of Strength and Stiffness eccentricities
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All buildings are subjected to some degree of torsion which in turn changes the member torsional demands from that of translation only. Torsional effects on buildings subjected to earthquakes are not found directly in structural analysis unless full three-dimensional inelastic dynamic time history analysis is conducted. Since design is often conducted using two-dimensional analysis, these effects are not directly considered. There is currently an understanding on how different factors may influence torsion, however, the degree to which these factors influence torsion is relatively unknown. Slab rotation effect is considered a major response parameter to represent the severity of the torsional response of eccentric systems; hence, it is considered in this study. The centre of strength (CR) and centre of stiffness (CS) are the two main factors under considerations. A comprehensive analysis on eighty different CR and CS conditions are applied to a three-dimensional, asymmetric building and their influences to slab rotation are observed. The CR/CS conditions are applied by varying strength eccentricities (er) and stiffness eccentricities (es) using two condition models. Then, earthquake ground motions are applied in z-direction under elastic and inelastic conditions. The results interpreted using a simple approach shows important slab rotation behaviour that forms interesting findings from this study. The slab rotation demand is found to reduce as strength eccentricity moves away from the Centre of Mass (CoM) but is independent of the stiffness eccentricity. The study also confirms finding of previous works which states that stiffness eccentricity plays a minor role when assessing the torsional behaviour of a ductile systems. Results from inelastic analysis shows slab rotation demand increases as strength eccentricity is closer to the CoM but it remains constant for elastic analysis.