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All Journal Journal of Geoscience, Engineering, Environment, and Technology Teras Jurnal Jurnal Permukiman Jurnal Teknik Sipil dan Teknologi Konstruksi Journal of The Civil Engineering Student PESARE: Science and Engineering Service Journal
Idris, Yunita
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Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Physics Public Health Transportation

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Penilaian Kapasitas Struktur Bangunan Eksisting Sebagai Tempat Evakuasi Vertikal di Kecamatan Baitussalam Karundeng, Chresky Nofelri; Idris, Yunita; Syamsidik, Syamsidik; Abdullah, Nora
Journal of The Civil Engineering Student Vol 3, No 3 (2021): Volume 3, Nomor 3, Desember 2021
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/journalces.v3i3.17815

Abstract

Kecamatan Baitussalam, Aceh Besar merupakan salah satu daerah terdampak bencana tsunami tahun 2004. Usaha mitigasi di Kecamatan ini masih berupa  jalur-jalur  evakuasi. Tempat evakuasi vertikal belum tersedia. Sehingga diperlukan tempat evakuasi vertikal terdekat untuk mengantisipasi bencana terulang kembali. Tempat evakuasi dapat dikembangkan dari bangunan eksisting. Sehingga penilaian kapasitas struktur dan fungsi bangunan eksisting sebagai tempat evakuasi vertikal dapat dipertimbangkan, maka tujuan penelitian ini adalah melakukan penilaian kapasitas struktur bangunan eksisting sebagai tempat evakuasi vertikal. Bangunan yang ditinjau yaitu Gedung A Yayasan Kesehatan Masyarakat dan Gedung SMAN 1 Baitussalam. Metode yang digunakan yaitu melakukan asesmen lapangan untuk mendapatkan data gedung kemudian dimodelkan pada SAP2000 v.22. Dari hasil pemodelan Pada SAP2000 v.22 dan persyaratan ketinggiaan fasilitas evakuasi, bangunan-bangunan ini belum memenuhi kriteria fasilitas tempat evakuasi sehingga perlu dilakukan penambahan tingkat dan perubahan penampang. Gedung yang telah ditambah tingkat dan diubah dimensi penampang pada  SAP2000 v.22 aman terhadap gempa dan tsunami serta dapat menjadi pertimbangan dalam perencanaan pengembangan tempat evakuasi vertikal di Kecamatan ini.
Pengembangan Kurva Kerapuhan Berbasis Incremental Dynamic Analysis Pada Bangunan Tipikal Puskesmas di Kota Banda Aceh Terhadap Bahaya Gempa Rahman, Fathur; Idris, Yunita; Abdullah, Abdullah; Asyifa, Cut Nella
Journal of The Civil Engineering Student Vol 4, No 3 (2022): Volume 4 Nomor 3 Desember 2022
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/journalces.v4i3.21275

Abstract

Banyak peristiwa gempa bumi telah banyak menyebabkan kerusakan bangunan. Ketika terjadi bencana gempa diharapkan puskesmas sebagai fasilitas kesehatan yang lazim diakses oleh masyarakat dapat bertahan dalam menerima beban gempa yang ditimbulkan. Tujuan penelitian ini yaitu menentukan probabilitas tingkat kerusakan bangunan tipikal Puskesmas di Kota Banda Aceh. Bangunan tipikal Puskesmas didapatkan dengan asesmen secara visual pada 11 Puskesmas di Kota Banda Aceh, kemudian kurva kerapuhan (fragility curve) dibangun dengan nilai probabilitas kerusakan dengan pendekatan Incremental Dynamic Analysis (IDA). Pendekatan IDA melakukan analisis penambahan beban tekan lateral berdasarkan analisis Non-Linier Time History (NLTH) menganalisis sebanyak 8 rekaman gempa. Peak Ground Acceleration (PGA) sebagai intensity measure (IM) dan drift ratio sebagai damage measure dipakai dalam menghasilkan kurva IDA dan hasil akhir yang didapat merupakan kurva kerapuhan (fragility curve). Kurva kerapuhan menunjukan hasil bahwa bangunan tipikal puskesmas di kota Banda Aceh yang memiliki PGA 0,6 g memperoleh hasil  probabilitas kerusakan 100% yang dikategorikan sebagai slight damage dan moderate damage sedangkan pada extensive damage nilai probabilitas sebesar 75%. Manfaat dari penelitian ini adalah memberikan informasi kapasitas bangunan dan upaya mitigasi pada bangunan tipikal puskesmas akibat dari kerusakan tersebut.
Optimasi Kekuatan Tarik Belah Beton Mutu Tinggi Melalui Peningkatan Efektivitas Bakteri Pada Self-Healing Concrete Alepu, Andi; Budi Aulia, Teuku; Idris, Yunita
Jurnal Permukiman Vol 19 No 2 (2024)
Publisher : Direktorat Bina Teknik Bangunan Gedung dan Penyehatan Lingkungan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31815/jp.2024.19.107-118

Abstract

High-strength concrete has a higher compressive strength compared to regular concrete, making it an ideal choice for structures that bear heavy loads, such as tall buildings, bridges, and towers. However, the weakness of concrete lies in its susceptibility to tensile forces, leading to the development of microcracks that may potentially evolve into macrocracks without detection. To address this issue, an innovation known as Self-healing Concrete (SHC) has emerged, wherein bacteria such as solibacillus, bacillus, and staphylococcus are added to the concrete mix. These bacteria produce compounds that form calcium carbonate (CaCO3) deposits, autonomously closing microcracks through their metabolism. This research aims to enhance the lifespan of concrete and the safety of structures by incorporating bacteria into the concrete mix. Testing was conducted using cylinders with a diameter of 15 cm and a height of 30 cm, with initial cracks introduced after 7 days of immersion and compressive strength reaching 30 MPa, which is 80% of the planned compressive strength of 50 MPa. Testing was performed on day 28. The results of the split tensile strength tests using solibacillus bacteria showed an average of 4.46 MPa, bacillus bacteria with an average of 4.51 MPa, and staphylococcus bacteria with an average of 5.48 MPa. Scanning Electron Microscopy (SEM) results depicted substances related to calcite crystals in each bacterial concrete sample. The use of bacteria as a self-healing agent has a positive impact, including increased split tensile strength, reduced water absorption, and decreased concrete permeability.
Pengaruh Pemodelan Soil-Structure Interaction pada Kinerja Struktur: Studi Kasus Tipologi Bangunan Sekolah Indonesia Ulza, Adrian; Yunita, Halida; Idris, Yunita; Faradiba, Ratu Shara
Jurnal Teknik Sipil dan Teknologi Konstruksi Vol 11, No 1 (2025): JURNAL TEKNIK SIPIL DAN TEKNOLOGI KONSTRUKSI
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jts-utu.v11i1.11549

Abstract

 This study evaluates the impact of Soil-Structure Interaction (SSI) on the dynamic response of low-rise school buildings in Indonesia. Three SSI models were developed: spring supports (SSI I), distributed springs on a plate (SSI II), and soil modeled as solid elements (SSI III), compared to a benchmark model. The analysis revealed that SSI III produced the highest displacement, shear force, and overturning moment responses but required significantly longer computation time. In contrast, SSI II demonstrated more efficient results by reducing internal forces and structural displacement. This study provides insights into the implementation and contribution of SSI modeling in structural analysis.
KUAT TARIK LENTUR DAUR ULANG DENGAN VARIASI KOMPOSISI AGREGAT DAUR ULANG (Recycled Aggregate) Rivandi, Rio; Bermansyah, Surya; Idris, Yunita
Journal of The Civil Engineering Student Vol 7, No 1 (2025): Volume 7 Nomor 1 Maret 2025
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/journalces.v7i1.2852

Abstract

Penggunaan beton yang cukup besar untuk proses pembangunan mengakibatkan berkurangnya sumber daya alam yang digunakan sebagai bahan campuran beton. Salah satu cara pelestarian lingkungan dalam bidang konstruksi ialah dengan menggunakan beton daur ulang (recycle aggregate concrete) sehingga sedikitnya dapat mengurangi penggunaan berlebihan agregat natural. Beton Daur Ulang (recycle aggregate concrete) merupakan campuran material yang didapatkan dari proses ulang beton yang sudah tidak terpakai. Penelitian ini bertujuan untuk menganalisis kekuatan lentur beton menggunakan agregat daur ulang dengan variasi 35%, 50% dan 100% yang diuji pada umur telah mencapai 7 hari, 14 hari dan 28 hari dengan kuat lentur rencana K-300, serta benda uji perbandingan (0%). Agregat kasar daur ulang yang digunakan adalah pecahan beton daur ulang diameter agregat maksimum 31,5 mm. Gradasi campuran adalah 0 10 mm, 10 20 mm, dan 20 30 mm. Hasil yang diperoleh adalah nilai kuat tarik lentur tertinggi pada umur pengujian 7 hari pada variasi agregat daur ulang 50% yaitu 3,162 MPa dengan kenaikan 19,68% dari beton normal (0%), pada umur 14 hari 3,347 MPa dengan kenaikan 14,25% dari beton normal (0%) dan pada umur 28 hari 3,667 MPa dengan kenaikan 16,30% dari beton normal (0%).
Pelatihan dan Sosialisasi Penggunaan Aplikasi Perhitungan Struktur Gedung (SAP2000) Nella Asyifa, Cut; Idris, Yunita; Amalia, Zahra; Darma, Yusria
PESARE: Jurnal Pengabdian Sains dan Rekayasa Vol 2, No 2 (2024): Juni 2024
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/pesare.v2i2.38557

Abstract

The advancement of modern civil engineering, software designed to facilitate and expedite the structural analysis calculation process, especially for seismic analysis, is also becoming increasingly sophisticated. The presence of this software greatly facilitates civil engineers in conducting analyses. Conducting seismic analysis for tall buildings using hand calculations not only consumes a significant amount of time and effort but also increases the risk of calculation errors due to human error. Training and Socialization on the Use of Building Structure Calculation Applications (SAP2000) were conducted offline in the Computer Laboratory Room of the MRK Civil Engineering Department, Faculty of Engineering, Syiah Kuala University. In general, the training and socialization materials on the use of building structure calculation applications, included an Introduction to Application Features, Modeling Steps, Continuous Beam Modeling Tutorial, 2D Frame Modeling Tutorial, and 3D Frame Modeling Tutorial. Based on the monitoring during the training, the participants showed great enthusiasm. They highly appreciated this activity as it provided them with the opportunity to learn about building structure calculations, and there were requests for further training sessions. After the completion of the activity, the participants were asked to fill out a questionnaire regarding the effects of using the application. One of the questions asked was about the participants' understanding after the training, where 100% of the participants reported an improvement in understanding due to the training activities.
PERILAKU PELAT FERROFOAM CONCRETE DENGAN DAN TANPA POZOLAN AKIBAT BEBAN IMPACT Maulana, Muhammad; Abdullah, Abdullah; Idris, Yunita
Teras Jurnal : Jurnal Teknik Sipil Vol. 11 No. 1 (2021): Maret 2021
Publisher : UNIVERSITAS MALIKUSSALEH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/tj.v11i1.378

Abstract

Abstrak Konstruksi non struktural rentan rusak akibat beban impact. Salah satu upaya menanganinya dengan menggunakan ferosemen yang mampu memberikan daya tahan kejut dengan baik. Matriks ferosemen dapat berinovasi menggunakan beton ringan yang telah banyak digunakan, salah satunya memakai busa yang dinamakan menjadi ferrofoam concrete. Tujuan penelitian ini mengamati kapasitas beban impact terhadap ferrofoam concrete dengan pasir pozolan dan tanpa pasir pozolan sehingga dapat digunakan pada konstruksi dengan tingkat ketahanan kejut yang besar. Sebanyak 4 benda uji pelat memiliki dimensi penampang 400 mm dengan ketebalan 40 mm digunakan dan 4 lapis wiremesh ditetapkan. Perbedaan SG 1200 kg/m³, 1400 kg/m³ dan 1600 kg/m³ menjadi pertimbangan dengan FAS 0.4 dan penambahan 10% pasir pozolan ditentukan. Pengujian beban impact diaplikasikan terhadap pelat dengan menjatuhkan bola besi sebesar 3 kg dari ketinggian 1 m di tengah pelat. Penentuan kerusakan dampak ditunjukkan dengan penyerapan energi disebabkan retak awal hingga retak keruntuhan dan defleksi selama peristiwa tumbukan. Hasil menunjukkan bahwa kinerja mortar ringan pada SG 1.4 Pozolan lebih baik dari SG 1.6 Pozolan, SG 1.2 Pozolan dan SG 1.4 Non Pozolan dalam menyerap energi akibat beban impact. Kata kunci: ferrofoam concrete, impact test, pozolan, drop-weight test Abstract Non-structural constructions are prone to damage due to impact loads. One of the efforts to overcome this problem is by using ferrocement which is able to provide good shock resistance. The ferrocement matrix can innovate using lightweight concrete which has been widely used, one of which uses foam which is known as ferrofoam concrete. The purpose of this study was to observe the impact load capacity on ferrofoam concrete with Pozolan sand and without Pozolan sand so that it can be used in constructions with a high level of shock resistance. A total of 4 plate specimens having a cross-sectional dimension of 400 mm with a thickness of 40 mm were used and 4 layers of wiremesh were assigned. The difference of SG 1200 kg / m³, 1400 kg / m³ and 1600 kg / m³ was taken into consideration with FAS 0.4 and the addition of 10% pozolan sand was determined. The impact load test is applied to the plate by dropping an iron ball of 3 kg from a height of 1 m in the center of the plate. Determination of impact damage is indicated by the energy absorption due to initial crack to crack collapse and deflection during the impact event. The results show that the performance of ferrofoam with pozolan at SG 1.4 is better than SG 1.6, SG 1.2 and SG 1.4 without pozolan in absorbing energy due to impact loads. Keywords: ferrofoam concrete, impact test, pozolan, drop-weight test
Resonance and Damping Ratio Analysis of the Baiturrahman Mosque Tower Based on Earthquake Ground Shaking simanjuntak, Noviana Sihotang; Umar Muksin; Idris, Yunita; Andi A. Rusdin
Journal of Geoscience, Engineering, Environment, and Technology Vol. 10 No. 02 (2025): JGEET Vol 10 No 02 : June (2025)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2025.10.02.21982

Abstract

Aceh is a region of tectonic activity, characterized by high seismicity. This inherent seismic hazard endangers the stability of vertical structures, such as mosque towers. The objective of this study is to analyze the dynamic characteristics of the Main Tower of the Baiturrahman Grand Mosque by estimating its natural frequencies and damping ratios. These parameters are used to evaluate the structural vulnerability of the mosque. The study obtained data from multilevel microtremor measurements on each floor of the tower. These measurements were analyzed using two methods. The Horizontal to Vertical Spectral Ratio (HVSR) method identified the dominant frequency in the basement. The Random Decrement Method (RDM) determined the natural frequency and damping ratios at each level of the structure. The results indicate that the natural frequency of the tower ranges from 1.16 to 4.32 Hz, with a damping ratio of 0.91% to 22.97%, which is within the established range for reinforced concrete structures. The substandard value can cause the building to oscillate easily when earthquake shocks occur. The analysis identified the upper floors, specifically 3 and 4, to be the primary sites of resonance, with ratios reaching 11-12%. The significant negative correlation between height and natural frequency indicates that the upper part of the structure is more prone to low-frequency earthquakes. The implications of this study are significant in light of their potential to enhance the understanding of the structural resonance risks and provide a technical basis for planning mosque towers in earthquake-prone areas.
Co-Authors Abdullah Abdullah Abdullah, Nora Alepu, Andi Andi A. Rusdin Asyifa, Cut Nella Budi Aulia, Teuku Faradiba, Ratu Shara Fathur Rahman Halida Yunita Karundeng, Chresky Nofelri Muhammad Maulana Nella Asyifa, Cut Rivandi, Rio simanjuntak, Noviana Sihotang Surya Bermansyah, Surya Syamsidik, Syamsidik Umar Muksin Yusria Darma Zahra Amalia