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All Journal Jurnal Mahasiswa Jurusan Teknik Sipil Sinergi Rekayasa Sipil Astonjadro
Lilya Susanti
Jurusan Teknik Sipil Fakultas Teknik Universitas Brawijaya
Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering

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Comparison of Strain Histories on Reinforced Concrete Eccentric Braced Frame (EBF) With Vertical and Horizontal Link Wijaya, Ming Narto; Susanti, Lilya; Pinontoan, Frisca Presley
Rekayasa Sipil Vol. 19 No. 2 (2025): Rekayasa Sipil Vol. 19 No. 2
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2025.019.02.5

Abstract

This study investigates the seismic performance of reinforced concrete Eccentrically Braced Frames (EBF) with vertical and horizontal link beams subjected to cyclic loading. The main objective is to compare strain histories and evaluate energy dissipation in vertical and horizontal link configurations. Experimental results indicate that vertical links, especially those with shorter lengths (15 cm), exhibit higher strain values, leading to significant plastic deformation and enhanced energy dissipation, though at the cost of increased damage and repair needs. Conversely, horizontal links remain largely within the elastic range, maintaining better structural integrity but offering less energy dissipation during seismic events. The CBF (Concentrically Braced Frame) control specimen showed minimal deformation and lower energy absorption. The findings suggest that vertical links are more suitable for energy dissipation in seismic design, while horizontal links offer greater durability and lower post-event maintenance. The balance between energy absorption and repairability is crucial for optimizing EBF systems in earthquake-prone areas. (explain the findings related to the purpose of this paper: to determine the effects of link orientation on strain distribution, energy dissipation, and structural integrity during seismic events).
Risk Analysis of Occupational Safety and Health Analysis Using the HIRARC Method at Building Construction Pramesthi, Shifa Ardhelia; Anwar, Ruslin; Susanti, Lilya
ASTONJADRO Vol. 14 No. 2 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i2.17359

Abstract

Occupational health and safety in Indonesia are crucial for improving worker safety and reducing the high incidence of construction-related accidents. In the research conducted on the construction of the Joint Lecture Building at a University in Malang City, a comprehensive analysis will be carried out to manage OHS risks, minimize workplace accidents, and improve work safety. By identifying hazards from each task and determining risks, risk controls for this construction project will be obtained. The work to be studied includes lower structure and upper structure tasks of the project. The research results show that risk control using the HIRARC method identified 52 hazards and risks. The risk analysis for lower structure tasks revealed five extreme risks, ten moderate risks, and four low risks, while the risk analysis for upper structure tasks revealed eight extreme risks and twenty-five moderate risks. The dominant hazard identification factors were machine-related, with seventeen hazard identifications dominated by heavy equipment hitting workers. The second factor was material-related risks, with workers being struck by falling materials and stepping on sharp objects. The third factor was worker-related risks, with seven identified risks dominated by workers falling from heights, followed by work method-related risks with seven identified risks dominated by improper worker positioning causing health issues. The final factor was environmental, with seven identified hazards dominated by landslides. Risk control is divided based on the causes of hazards, namely man, machine, material, method, and environment. Risk control is carried out by identifying based on the five HIRARC control hierarchy levels: elimination, substitution, engineering control, administrative control, and PPE.
Energy use Efficiency on High Rise Hotel Building to Reduce Carbon Emission Using Sefaira Satriopratomo, Dhimas F.; Devia, Yatnanta Padma; Susanti, Lilya
ASTONJADRO Vol. 13 No. 1 (2024): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v13i1.14591

Abstract

A lot of energy consumed by large hotel buildings can affect the environment degradation in a long period of time. Every building plan, including hotels must consider an integrated balance in utilizing existing and limited resources based on low CO2 emissions. Excessive use of energy has a negative impact which increasing the amount of CO2 emissions. This research aims to determine the effect of energy efficiency to provide recommendations, which require significant reduction of energy and environmental degradation by minimizing energy use and CO2 emission. The method that used in this research are modelling, and simulate the energy use intensity and carbon emission using Sefaira as a Sketchup Software plug-in by simulating the existing design and provide a recommendation. The object that being used in this research is a hotel building that have 11 floor and 1 basement in Yogyakarta, Indonesia. The result shows EUI of existing hotel building is 977 kWh/m2/year and carbon emission 1.872.042 kgCO2e/year. Comparing to the EUI standard which at the limit of 290–400 kWh/m2/yr. It is recommended to build additional window at the dismantled room area on north and south side of the hotel’s corridor. The recommended design, provides a reduction of EUI into 744,22 kWh/m2/year (31,28%). Meanwhile the carbon emission reduced into 1.467.072 kgCO2e/year (27,60%) from the existing design.
Energy Audit for Energy Efficiency and Cost on Hospital Buildings Putri, Mangesti Carissa; Devia, Yatnanta Padma; Susanti, Lilya
ASTONJADRO Vol. 13 No. 1 (2024): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Hospitals are social facilities that operate publicly for 24 hours/day. The energy consumption of hospital buildings is among the highest, compared to commercial and residential buildings. Energy efficiency can be achieved after implementing a process called energy auditing and planning. The purpose of this study is to determine the EUI (Energy Use Intensity) of electricity for energy and cost savings, without reducing the productivity and comfort of the occupants. The method used in this research is the calculation of the EUI of the entire equipment, comparison of calculating the existing EUI with the Standard, simulation of existing conditions, redesign, modeling and simulation analysis of redesign results, calculation of EUI after redesign and calculation of energy costs before and after redesign. The results of this study obtained the EUI value in the air-conditioned room on the 1st floor of 15.14 kWh/m2/month included in the category Sufficient efficient from previously Wasteful, 2nd floor of 7.53 kWh/m2/month included in the category Fully Efficient and 3rd floor of 7.97 kWh/m2/month included in the category Fully Efficient. As for the non-AC room, the 1st floor of 2.27 kWh/m2/month is included in the Fully Efficient category, the 2nd floor of 2.50 kWh/m2/month is included in the Fully Efficient category from the previous Efficient, and the 3rd floor of 2.50 kWh/m2/month is included in the Fully Efficient category from the previous Efficient. Meanwhile, the calculation of energy costs after design recommendations was obtained at IDR 976.219.477,27 decreased by 21.56%.
Pertumbuhan Kekuatan Awal Beton dengan Variasi Persentase Ground Granulated Blast Furnace Slag dan Silica Fume Tuanany, Syafiqah Rizky; Susanti, Lilya; Wijaya, Ming Narto
Jurnal Mahasiswa Jurusan Teknik Sipil Vol. 1 No. 2 (2025): Student Journal
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Beton sebagai salah satu bahan konstruksi favorit di seluruh belahan dunia menjadi marak dicari seiring dengan peningkatan kebutuhan konstruksi. Peningkatan permintaan beton tidak hanya mendatangkan untung, namun meninggalkan efek buruk jangka panjang bagi bumi akibat proses produksi salah satu bahan penyusunnya yaitu semen. Produksi semen secara massal mampu mengasilkan emisi CO2 yang berdampak buruk bagi pemanasan global. Sehingga, GGBFS dan Silica Fume hadir sebagai inovasi ramah lingkungan untuk mengatasi masalah tersebut. Maka, penelitian ini mengkaji pengaruh variasi persentase GGBFS dan Silica Fume terhadap kuat tekan awal beton yang diuji pada umur 1, 3, dan 7 hari. GGBFS sebagai subtitusi sebagian semen digunakan dengan variasi 0%, 20%, dan 50% dari total cementitious material. Selain itu, digunakan variasi Silica Fume yaitu 0%, 5%, dan 7,5% dari total cementitious material. Benda uji direncanakan memiliki bentuk silinder, dengan diameter berukuran 15 cm dan setinggi 30 cm. Berdasarkan hasil pengujian, GGBFS dan Silica Fume berpengaruh terhadap kuat tekan awal beton. Hasil pengujian mengindikasikan bahwa penambahan GGBFS pada adukan beton secara umum menurunkan kuat tekan beton pada umur 1 dan 3 hari, namun dengan kadar 20% di usia 7 hari justru dapat meningkatkan kuat tekan beton, sebelum kembali menurun pada kadar 50%. Selain itu, penambahan Silica Fume cenderung meningkatkan kuat tekan awal rata-rata beton. Sedangkan kombinasi kedua material ini menurunkan kuat tekan awal ketika kadar GGBFS ditambahkan. Kuat tekan awal beton tertinggi tercatat pada penambahan GGBFS 20% dan Silica Fume 0% sebesar 29,06 MPa. Namun, bila mempertimbangkan penggunaan kedua material, kuat tekan awal beton tertinggi didapatkan saat penggunaan GGBFS 20% dan Silica Fume 5% dengan hasil 25,30 MPa. Secara umum, hasil kuat tekan awal dari kombinasi kedua material lebih rendah dibandingkan dengan penggunaan material GGBFS saja atau Silica Fume saja. Kata kunci: Kuat Tekan Awal, Ground Granulated Blast Furnace Slag, Silica Fume
Seismic Capacity of Reinforced Concrete Eccentric Braced Frame (EBF) With Vertical Link Using 20% GGBFS I Gde Eka Wiranatha; Wijaya, Ming Narto; Susanti, Lilya
Rekayasa Sipil Vol. 18 No. 2 (2024): Rekayasa Sipil Vol. 18 No. 2
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2024.018.02.7

Abstract

EBF-V bracing is highly attractive due to its good seismic performance in high seismic zones. Vertical link beams as a component are capable of high elastic displacement and ductility to absorb lateral forces through shear-bending collapse mechanisms. However, the lateral load capacity of the bracing has to be sacrificed as it tends to decrease. The present study focuses on the capacity and lateral behavior of reinforced concrete eccentrically braced frame (EBF) with vertical link beam and tighter reinforcement spacing in the link beam in combination with GGBFS. GGBFS at 20% can improve the mechanical properties by reducing the pore number of the concrete due to the smaller particle size of OPC.This study uses CBF-V as a control to investigate the seismic behavior of tightly spaced transverse reinforcement (75 mm) in EBFs’s vertical link beam with eccentricities of 15 cm and 25 cm. In addition, the role of GGBFS was also observed through the displacement and ductility of the frame. As a result, the CBF has the highest plasticity. However, the tight reinforcement spacing of the vertical link beam in the EBF-V-15 results in the highest restraint, resulting in excellent stiffness and ductility through earthquake absorption with a shear collapse mechanism. In addition, GGBFS also plays a role in improving the collapse mechanism, which is characterized by large elastic displacement and high ductility.
Crack Behavior of Eccentrically Braced Frame Type-V with Ground Granulated Blast Furnace Slag Yohanes Ola Sira Lamawato; Susanti, Lilya; Wijaya, Ming Narto
Rekayasa Sipil Vol. 18 No. 2 (2024): Rekayasa Sipil Vol. 18 No. 2
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2024.018.02.8

Abstract

To make the structure stronger and stiffer, which is more susceptible to earthquake forces, a special mechanism is required to improve the structure's lateral stability. EBF-V with a horizontal link beam is a brace that can enhance structural performance by providing good stiffness and ductility. On the other hand, GGBFS, as a partial OPC replacement material, was applied to contribute to using more environmentally friendly materials. Besides offering a smaller carbon footprint, GGBFS also positively improves the mechanical properties of concrete. Thus, this study focuses on investigating the crack propagation pattern of reinforced concrete braced frames combined with 20% GGBFS in EBF-V with three variations of link beam element lengths of 0 cm (CBF), 15 cm (EBF-V-) and 25 cm (EBF-V-25). As a result, the CBF specimen showed the best seismic performance. In EBF specimens, there is an increase in the collapse mechanism to be more ductile. The link beam plays a role in making the crack pattern more focused. EBF-V-15 performs well under seismic loading with large lateral capacity and ductility. The cracks in the frame are evenly distributed, dominated by fine cracks, and symmetrical on both sides. This validates that GGBFS plays a good role in improving the frame performance with its pore-filling effect and pozzolanic reaction.
Co-Authors ., Kholilurrohman ., Nabila A.A. Ketut Agung Cahyawan W Achfas Zacoeb Adinda Maharani, Ghea Nabila Agraprana, Andhika Alriyandi, Ariq Amjad, Firhan Rezi Anggara Putra, Dyorizky Imaduddin Ari Wibowo Arista, Talitha Asmara Dana, Aldi Jaka Athhtaariq, M. Falah Brahmana K, Bhondana Bayu Brahmana Kridaningrat, Bhondana Bayu Brahmana Bria Seran, Rey David Budi Santoso, Farouk Angga Cahyo, Fahrizal Dwi Cendekiawan Putra, Moch Aldin Christin Remayanti N. Desy Setyowulan Devi Nuralinah Dinatra, Iqbal Rizky Dini, Hanita Nurilina F, Ananda Insan Fahrudin, Rizqi Faisal, Imam Bagus Farhani, Muhammad Rizqi Febrian, Dicky Hamdani Firdausy, Ananda Insan Firdausy, Ananda Insan Franandha, Septriana Bella G. P., Julius Nanda Hafiizh, Yusril Heryanto, Sri Hidayat, Muhammad Farras Hylga Rohman I Gde Eka Wiranatha Ikhsan, Erika Ainun Zakinah Indra Cahya Indra Waluyohadi, Indra Iqbal, Muhammad Irfandi, Rofif Alfiros Jarwo Saputra, Muhammad Aldo Kamal, Wan Muhammad Kanugrahan Dawam, Muhammad Irfan Khamdani, Muhammad Ali Kurniawan, Fajri Kusumatantri, Agnes Laksono, Rizal Adhit M. Taufik Hidayat Mahendra, Muhammad Reza Marami S. A., Fat-Hanna Maulana, Dicky Akbar Ming Narto Wijaya Mohammad Taufik Hidayat Muhammad Yusuf, Fathullah Munadi, Abu Qasim, Muhammad Yusuf, N., Faiq Putra Nainggolan, Christin Remayanti Narto Wijaya, Ming Nugroho, Bagus Prasetyo Nurfidiani Putri, Qisthina Tamimi Nuriani Virgianti, Febbi Ayu Nursamhuda, Wahyu P, Erlangga Adang P., Naadiyah Widyadhana Pangestu, Rizki Ayu Pinontoan, Frisca Presley Pramesthi, Shifa Ardhelia Pramitari W.D, Sagung Istri Pramono, Jafar Aji Prasetyo, Andi Pratama, Firman Yudi Pratama, Firman Yudi Prayoga, M. Fajar Purwaningsih, Anis Puspitasari, Isnana Putra, Yogatama Sujatmiko Putri Aji, Gumelar Asrining Putri, Desy Trikurnia Putri, Herawati Dewi Putri, Mangesti Carissa Rahma, Aisha Hawina Rahmawati, Dian Ramadhan, Firmansyah Ramadhani, Muhammad Alfian Ramayadi, Muhammad Faisal Refandi, Ricky Rivaldo, Wahyu Ruslin Anwar Sabrina, Raissa Saifoe El Unas Salim, Ahmad Agus Sani, Firzi Maulana Saputri, Meirheyma Denfia Satriopratomo, Dhimas F. Satriopratomo, Dhimas F. Satrya, Rahmat Budi Saulina Situmorang, Gracesella Novita Sembiring, Aldi Efrata SembiringMaha, Syella Audina Setiadi, Alan Dharmasaputra Setiawan, Fadilah Shavira, Alexandra Shana Silalahi, Jogi Sitanggang, Gilbert Siti Nurlina Sri Murni Dewi Sri Murni Dewi, Sri Syafirra, Sonnia Taffareld, Muhammad Firhand Tuanany, Syafiqah Rizky V P, Andreas Brian W., Dicky Wirasatya W., Ramadhan Budhi Waluyo, Ajit Rachmatsyah Wicaksono, Armanda Wisnu Wijaya, Ming Wisnumurti . Yatnanta Padma Devia Yohanes Ola Sira Lamawato Yulianto, Angga Restu