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All Journal MEDIA KOMUNIKASI TEKNIK SIPIL Jurnal Teknik Sipil Jurnal Teknik Sipil Civil Engineering Dimension JMTS: Jurnal Mitra Teknik Sipil Jurnal Bakti Masyarakat Indonesia Journal of Civil Engineering and Planning (JCEP) Jurnal Teknik Sipil Cendekia (JTSC) Dimensi Utama Teknik Sipil Jurnal Teknik Sipil
Andy Prabowo
Program Studi Magister Teknik Sipil, Fakultas Teknik, Universitas Tarumanagara
Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Social Sciences Transportation Other

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Evaluasi Kinerja Sistem Struktur Rangka Pemikul Momen Khusus Pada Gedung Baja dengan Variasi Pemodelan Sendi Plastis Andy Prabowo; Jeong Hyun Nam; Usman Wijaya
Jurnal Teknik Sipil Vol 32 No 2 (2025): Jurnal Teknik Sipil - Edisi Agustus
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2025.32.2.8

Abstract

Abstrak Seringnya terjadi gempa bumi di Indonesia menuntut perencana struktur untuk menyediakan sistem pemikul beban lateral pada bangunan, tidak terlepas pada struktur bangunan baja. Di antara sistem-sistem struktur yang tersedia, Sistem Rangka Pemikul Momen Khusus (SRPMK) banyak diterapkan dikarenakan daktilitasnya yang tinggi dan disukai arsitek karena desainnya yang multifungsi. Penelitian ini mengevaluasi kinerja seismik dari SRPMK pada gedung baja 5 lantai dengan fungsi apartemen, dirancang sesuai SNI 1726:2019, SNI 1729:2020, SNI 7860:2020 dan SNI 7972:2020. Kinerja struktur diperiksa terhadap dua level bahaya gempa—Desain Basis Earthquake (DBE) dan Maximum Considered Earthquake (MCE)—seperti yang dispesifikasikan oleh ASCE 41-17, menggunakan analisis pushover dengan dua pendekatan pemodelan sendi plastis. Model 1 menggunakan sendi plastis dengan tipe deformation-controlled untuk perilaku lentur balok dan perilaku aksial-lentur kolom. Untuk Model 2, sendi plastis pada kolom dirubah menjadi tipe force-controlled didasarkan telah terpenuhinya kriteria perancangan strong-column-weak-beam saat mendesain ukuran penampang. Dua metode evaluasi kinerja struktur yaitu Capacity Spectrum Method (CSM) dan Displacement Coefficient Method (DCM) digunakan untuk memeriksa kinerja struktur. Melalui dua metode tersebut, hasil penelitian menunjukkan pemodelan sendi plastis pada Model 1 menghasilkan evaluasi kinerja struktur yang lebih baik dibandingkan Model 2. Kata-kata Kunci: Analisis pushover, deformation-controlled, evaluasi kinerja, force-controlled, SRPMK. Abstract Indonesia's frequent seismic activity necessitates that structural engineers incorporate effective lateral load-resisting systems in building designs, particularly for steel structures. Among the available systems, the Special Moment Resisting Frame (SMRF) is widely adopted due to its ductility and is favored by architects for its design versatility. This study evaluates the seismic performance of an SMRF system in a five-story steel apartment building, designed in accordance with SNI 1726:2019, SNI 1729:2020, SNI 7860:2020, and SNI 7972:2020. The structural performance is assessed against two seismic hazard levels—Desain Basis Earthquake (DBE) and Maximum Considered Earthquake (MCE)—as specified in ASCE 41-17, using pushover analysis with two different plastic hinge modeling approaches. Model 1 employs deformation-controlled plastic hinges for both beam flexural behavior and column axial-flexural behavior, while Model 2 modifies the column hinges to be force-controlled, based on the fulfillment of the strong-column-weak-beam design criterion. Two methods of performance evaluation, the Capacity Spectrum Method (CSM) and the Displacement Coefficient Method (DCM), are used to assess the structural performance. Through these two methods, the results show that the plastic hinge modeling in Model 1 yields better structural performance evaluation compared to Model 2. Keywords: Deformation-controlled, force-controlled, SMRF, performance evaluation, pushover analysis.
Evaluasi Kinerja SRPMM pada Gedung Baja 5 Lantai dengan Analisis Pushover menggunakan Variasi Pemodelan Deformation-Controlled dan Force-Controlled Andy Prabowo; Rangga Winata; Usman Wijaya
Jurnal Teknik Sipil Vol 22 No 1 (2026): Jurnal Teknik Sipil
Publisher : Universitas Kristen Maranatha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28932/jts.v22i1.11470

Abstract

This study utilizes pushover analysis to evaluate the performance of Intermediate Moment Resisting Frame System (IMRFS) used as the lateral force resisting system on the five stories building. Two structural models were analysed with differences on plastic hinge allocations and the controlling behaviour. On Model 1, plastic hinges were assigned to the designated beam and columns with deformation-controlled behaviour, while on Model 2, the plastic hinges on the columns were changed to force-controlled. Building modelling was in 3-dimension using ETABS v.20.0.0. Evaluations of the structural performance used two methods. Based on the structural performance evaluation using the Capacity Spectrum Method (CSM) and the Displacement Coefficient Method (DCM), the performance level of Model 1 is IO–LS in the X direction and > CP in the Y direction. Meanwhile, the performance level achieved by Model 2 is > CP in both the X and Y directions. In addition to the performance level evaluation, verification was also conducted on the values of the response modification factor (R), overstrength factor (Ω₀), and deflection amplification factor (Cd) obtained from the pushover analysis. The R values for both models are approximately 3, which is lower than the R value specified for SRPMM in SNI 1726:2019. The Ω₀ values for Models 1 and Model 2 are approximately 1.5 and 2.4, respectively. The Cd values for Models 1 and Model 2 range from 4.3 to 4.8 and from 5.5 to 5.8, respectively, for both the X and Y directions.
Dampak Penambahan Fly Ash Pada Campuran Beton Terhadap Kuat Tekan dan Durabilitas Beton Akibat Serangan Sulfat Widodo Kushartomo; Vanessa Adistya Wildan; Andy Prabowo
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 31, Nomor 1 (2025)
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/mkts.v31i1.71566

Abstract

Concrete is the primary choice for construction projects, including its use in aggressive environments such as coastal areas. The high sulfate content in these environments poses a threat to the durability and compressive strength of concrete. The impact of sulfate attack on concrete can result in degradation and a decrease in concrete quality. Several methods have been used to maintain the durability of concrete, such as applying coatings to the surface of the concrete or using pozzolanic materials in the concrete mixture. In this study, Fly Ash was used as a pozzolanic material to reduce the impact of sulfate attack on concrete. The experiment involved adding Fly Ash to the concrete mixture in proportions of 0%, 10%, 20%, 30%, 40%, and 50% by weight of cement. Three test specimens were made for each variation in diameter and height of 10 cm and 20 cm, respectively. The durability test of the concrete used a magnesium sulfate (MgSO4) solution with a dry-wet cycle method according to SNI 3407-2008, which was conducted after curing in water for 28 days. The results of the test showed that adding Fly Ash to the concrete mixture has been proven to reduce damage and minimize the degradation of concrete quality due to sulfate attack compared to normal concrete without the use of Fly Ash. The use of Fly Ash also increased the compressive strength of all test specimens compared to normal concrete without Fly Ash.
DESAIN MODULAR PRACETAK PADA REKONSTRUKSI PERKERASAN KAKU JALAN TOL TANGERANG–MERAK Agus Budiyanto; Sunarjo Leman; Andy Prabowo
JMTS: Jurnal Mitra Teknik Sipil Volume 9, Nomor 3, Agustus 2026
Publisher : Prodi Sarjana Teknik Sipil, FT, Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24912/jmts.v9i3.34570

Abstract

Structural deterioration of rigid pavement on toll roads—driven by heavy and frequently overloaded axle loads together with tropical environmental exposure—calls for a reconstruction method that shortens lane-closure time without sacrificing structural reliability. This study evaluates a modular precast concept for rigid pavement reconstruction on the Tangerang–Merak toll road (Ciujung–Cikande segment, Jakarta-bound carriageway) by integrating three components: traffic characterisation from 77 days of Weight-in-Motion (WIM) records at three toll gates; three-dimensional Finite Element Analysis (FEA) in Midas FEA NX under the factored ultimate combination 1.2SWL + 1.2DL + 1.6LL, with the live load swept across fifteen wheel positions to locate the critical response; and a Life-Cycle Cost Analysis (LCCA) comparing three cast-in-situ curing scenarios against the modular precast option. Three module variants sharing identical outer geometry but differing joint configurations were examined. Corner–centre wheel positions (1A, 1C, 1E) governed the response. Module 2 reached a tie-bar stress of 812.19 N/mm², exceeding the yield strength of the transverse BJTP-24 bar (fy = 235 N/mm²) and signalling a progressive-failure risk, whereas Module 3 exhibited the lowest displacement (0.789 mm), the lowest dowel stress (101.51 N/mm²), and a tie-bar stress limited to 671 N/mm². Economically, Module 3 lowered total reconstruction cost by 33.9% relative to the six-hour cast-in-situ scenario and shortened construction time by 42.35% relative to the one-day scenario. Module 3 is therefore recommended as the optimum configuration, pending experimental validation of the shear connection. Abstrak Kerusakan struktural pada perkerasan kaku jalan tol—yang dipicu oleh beban gandar berat dan kerap berlebih muatan serta paparan lingkungan tropis—menuntut metode rekonstruksi yang mempersingkat waktu penutupan lajur tanpa mengorbankan keandalan struktur. Penelitian ini mengevaluasi konsep modular pracetak untuk rekonstruksi perkerasan kaku pada ruas Tol Tangerang–Merak (Segmen Ciujung–Cikande, Jalur B arah Jakarta) dengan memadukan tiga komponen: karakterisasi lalu lintas dari rekaman Weight-in-Motion (WIM) selama 77 hari di tiga gerbang tol; analisis elemen hingga (FEA) tiga dimensi pada Midas FEA NX dengan kombinasi ultimit terfaktor 1,2SWL + 1,2DL + 1,6LL, di mana beban hidup disapu pada lima belas posisi roda untuk menemukan respons kritis; dan Analisis Biaya Siklus Hidup (LCCA) yang membandingkan tiga skenario pengecoran di tempat terhadap opsi modular pracetak. Tiga varian modul dengan geometri luar identik namun konfigurasi sambungan berbeda ditinjau. Posisi roda sudut–tengah (1A, 1C, 1E) menjadi kondisi penentu. Modul 2 mencapai tegangan tie bar 812,19 N/mm², melampaui kuat leleh baja melintang BJTP-24 (fy = 235 N/mm²) sehingga menandai risiko kegagalan progresif, sedangkan Modul 3 menunjukkan perpindahan terendah (0,789 mm), tegangan dowel terendah (101,51 N/mm²), serta tegangan tie bar yang terjaga pada 671 N/mm². Secara ekonomi, Modul 3 menurunkan total biaya rekonstruksi 33,9% terhadap skenario pengecoran di tempat umur 6 jam dan memangkas durasi konstruksi 42,35% terhadap skenario umur 1 hari. Modul 3 direkomendasikan sebagai konfigurasi optimum, dengan catatan perlu validasi eksperimental pada sambungan geser.
Co-Authors Adiputro, Susanto Triyogo Agus Budiyanto Aji Setiawan Brian Mamahit Daniel Christianto Eko Juwanto Fakhruddin, Faris Fasha, Naufal Zandika Hansen Koesoema Hendrawan, Ricardo Ie, Michelle Karen Julia Imantaka, Eldwin Jeong Hyun Nam Kelsen Andrian Priestley Rangga Winata S.Pd. M Kes I Ketut Sudiana . Siahaan, Hanavi Silvester Boenyamin, Michael Siswadi Soegiarso, Roesdiman Sriwijaya, Jehuda Christofel Sungkana, Kennard Evan Usman Wijaya Usman Wijaya Vanessa Adistya Wildan Wahono, Dimas Widodo Kushartomo Widodo Kushartomo, Widodo Widodo Kushartono Wijaya, Hendy Yuskar Lase, Yuskar