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All Journal Jurnal Teknik Dinamisia: Jurnal Pengabdian Kepada Masyarakat JURNAL SAINTIS SAINSTEK
Mahadi Kurniawan
Universitas Islam Riau
Arts Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Engineering Environmental Science Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

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Optimization of Accelerometer Sensor Location In Arch Bridge Monitoring System Using The Sensor Elimination Using Capital Assurance Criterion (SEAMAC) Method Ritonga, Qonita; Kurniawan, Mahadi; Syarif, Firman; Rachmat Setiawan, Panji; Ahmadi , Heri; Raveena Putri, Citra; Oktavia, Ferly
JURNAL SAINTIS Vol. 25 No. 01 (2025)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/saintis.2025.vol25(01).18997

Abstract

      In developing countries such as Indonesia, various fields of construction are currently being actively developed, especially bridge construction. Damage to the bridge structure itself requires very large repair costs. Currently, a monitoring system is being introduced to assess the condition of structures against dynamic loads, namely SHMS (Structural Health Monitoring System). The research aims to determine Finite Element Modeling, the optimal location, and several accelerometer sensors. To determine the condition of the arch bridge structure, it is necessary to detect damage through the results of the structural response recorded via the accelerometer sensor. In identifying the optimum number and location of sensors, the method used in this research is SEAMAC (Sensor Elimination Using Modal Assurance Criterion). Where this method is an algorithm method that performs an elimination on the sensor. The optimal placement of accelerometer sensors is determined using the Sensor Elimination Using Modal Assurance Criterion (SEAMAC) method, focusing on the floor plate and the bridge arch frame. Proper sensor placement is crucial as it yields important location data essential for identifying the modal characteristics of the bridge structure. In total, 16 accelerometer sensor locations were identified, with 8 sensors designated for both the floor plate and the arch frame.
Evaluasi Kekuatan Struktur Kolom Dengan Pendekatan Probabilitas Gaussian Pada Gedung Kuliah Terpadu Politeknik Negeri Bengkalis: Evaluation of The Strength of Column Structure Using a Gaussian Probability Approach on Gedung Kuliah Terpadu Politeknik Negeri Bengkalis Sukmawati , Mega; Kurniawan, Mahadi; Anggreana, Vella; Sapitri
JURNAL SAINTIS Vol. 23 No. 01 (2023)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/saintis.2023.vol23(01).25233

Abstract

[IN] Gedung Kuliah Terpadu (GKT) 1 Politeknik Negeri Bengkalis direncanakan 3 lantai dengan bentuk asimetris dan berfungsi sebagai gedung administrasi dan laboratorium, dengan kondisi wilayah Bengkalis yang berpotensi gempa sangat kecil. Berdasarkan hal tersebut, pada GKT 1 dilakukan evaluasi pada struktur kolom dengan asumsi bahwa di daerah Bengkalis terjadi peningkatan percepatan tanah puncak atau (Peak Ground Acceleration, PGA) menurut SNI 1726-2019. Tujuan penelitian ini untuk mengetahui apakah keandalan struktur kolom yang direncanakan stabil dari pengaruh nilai tekuk dalam menahan beban aksial maksimum yang bekerja, akibat peningkatan percepatan tanah puncak atau (Peak Ground Acceleration, PGA). Metode yang digunakan adalah metode probabilitas distribusi normal (Gaussian), yang dapat menentukan keandalan struktur kolom dalam menahan beban kerja maksimum akibat peningkatan percepatan tanah puncak atau (Peak Ground Acceleration, PGA) yang dilakukan pada GKT 1. Dengan struktur kolom yang ditinjau yaitu C27, yang merupakan kolom kritis dengan beban aksial paling maksimum (Pmaks) yang diterima. Hasil evaluasi pada kolom kritis C27, beban aksial maksimum 109,044 ton menghasilkan nilai tekuk sebesar 95,0488 mˉ² dengan keandalan 99,8% berdasarkan kondisi eksisting dilapangan, sedangkan untuk beban aksial maksimum 155,040 ton setelah diasumsikan terjadinya percepatan tanah puncak (Peak Ground Acceleration, PGA) berdasarkan SNI 1726-2019 menghasilkan nilai tekuk 97,5715 mˉ² dengan keandalan sebesar 91,9 %. [EN] Gedung Kuliah Terpadu (GKT) 1 Politeknik Negeri Bengkalis is designed as a three-story building with an asymmetrical shape, functioning as an administrative and laboratory facility. Considering that Bengkalis is located in an area with very low earthquake potential, an evaluation was conducted on the column structure by assuming an increase in Peak Ground Acceleration (PGA) based on SNI 1726-2019. This study aims to determine whether the reliability of the designed column structure remains stable in resisting maximum axial loads when subjected to increased soil acceleration. The method applied in this research is the normal distribution probability (Gaussian) method, which is used to assess the reliability of the column structure in withstanding maximum loads resulting from the assumed increase in PGA. The structural analysis focuses on column C27, identified as the critical column due to receiving the highest axial load (Pmax). The evaluation results show that for column C27, the maximum axial load of 109.044 tons produces a bending value of 95.0488 mˉ² with a reliability of 99.8% under existing field conditions. However, when the maximum axial load increases to 155.040 tons—based on the assumed peak ground acceleration according to SNI 1726-2019—the bending value rises to 97.5715 mˉ², and the reliability decreases to 91.9%. These findings indicate that an increase in PGA significantly affects the reliability of the column structure, although it remains within the safe category.
Pengaruh Penambahan Admixture Adhesive Manufacturer 78 Terhadap Kuat Tekan Beton Dengan Metode Self Healing Concrete: The Effect of Additional Admixture Adhesive Manufacture 78 On The Concrete Compressive Strength Using the Self-Healing Concrete Method Hasyim, Nanda; Syarif, Firman; Kurniawan, Mahadi; Anggrena, Vella
JURNAL SAINTIS Vol. 23 No. 01 (2023)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/saintis.2023.vol23(01).25239

Abstract

[IN] Penelitian ini menggunakan metode Self Healing Concrete yang dimana beton diharapkan mampu memperbaiki dirinya sendiri dari kerusakan retakan dengan memanfaatkan bakteri yang didapat dari ekstrak limbah sayuran. Untuk mengetahui peningkatan kekuatan beton setelah dicampur dengan bahan tambah limbah tomat dan Mastersure1007 additive dengan metode self healing concrete dengan variasi limbah sayuran 3%, dan 0,8% Mastersure 1007 dan Mengetahui pengaruh penambahan ekstrak limbah sayuran dan Mastersure 1007 pada beton dengan metode self healing concrete terhadap kuat tekan beton Penelitian ini bersifat eksperimen (reserch) yang dilakukan dilaboratorium dengan mengacu pada ISO 140440 dengan benda uji berbentuk silinder sebanyak 27 sampel. Dan akan dilakukan uji tekan. Hasil dari penelitian ini, kuat tekan beton tanpa diretakkan variasi 1% adhesive manufacturer 78 dan 3%, 5%, 7%, 9% limbah sayuran secara berturut-turut adalah 44,59 Mpa, 42,28 Mpa, 42,71 Mpa, 49,85 Mpa, 41,25 Mpa, sedangkan kuat tekan beton diretakkan variasi 3%, 5%, 7%, 9% secara berturut-turut adalah 36,85 Mpa, 38,02 Mpa, 42,16 Mpa, 44,68 Mpa. Nilai slump pada beton campuran 1% adhesive manufacturer 78 memiliki nilai 43 mm, pada beton variasi 3%, 5%, 7%, 9% secara berturut-turut adalah 44,33 mm, 45,66 mm, 48,33 mm, 53,66 mm, sedangkan beton diretakkan memiliki nilai slump variasi 3%, 5%, 7%, 9% secara berturut-turut adalah 48,66 mm, 47 mm, 44,33 mm, 42,66 mm. Pemulihan retakan pada beton yang dilihat secara visual dengan perawatan selama 28 hari, dapat menutup retakan yang berukuran sehelai rambut pada beton. [EN] This study uses the Self Healing Concrete method where the concrete is expected to be able to repair itself from crack damage by utilizing bacteria obtained from vegetable waste extracts. To determine the increase in the strength of concrete after being mixed with tomato waste and adhesive manufacturer 78 (AM78) additive with a self-healing concrete method with variations of vegetable waste 3%, 5%, 7%, 9% and 1% adhesive manufacturer 78 and to know the effect of adding vegetable waste extract and Adhesive Manufacturer (AM78) on concrete with self-healing concrete method for the recovery of cracks that occur in concrete. This research is experimental (reserch) conducted in the laboratory with reference to SNI 03-2834-2000 with a cube-shaped test object of 27 samples. The treatment period is 28 days and a pressure test will be carried out. Crack recovery in concrete can only be seen visually by taking pictures. The results of this study, the compressive strength of the uncracked concrete was 1% adhesive manufacturer 78 and 3%, 5%, 7%, 9% vegetable waste respectively 44.59 Mpa, 42.28 Mpa, 42.71 Mpa, 49.85 Mpa, 41.25 Mpa, while the compressive strength of cracked concrete with variations of 3%, 5%, 7%, 9% respectively were 36.85 Mpa, 38.02 Mpa, 42.16 Mpa, 44.68 MPa. The slump value in the 1% adhesive manufacturer 78 mixed concrete has a value of 43 mm, the variation of 3%, 5%, 7%, 9% concrete is 44.33 mm, 45.66 mm, 48.33 mm, 53 respectively. .66 mm, while the cracked concrete has slump values of variations of 3%, 5%, 7%, 9% respectively are 48.66 mm, 47 mm, 44.33 mm, 42.66 mm. The visual restoration of cracks in concrete with 28 days of treatment can close hair-sized cracks in concrete.
Co-Authors Adha, Augusta Adha, Augusta Ahmadi , Heri Ahmadi, Heri Anggreana, Vella Anggrena, Vella Arif Kurnia Dewi, Sri Hartati Dewi, Sri Hartati Elizar Elizar, Elizar Ferly Oktavia Firman Syarif Fitridawati Soehardi, Fitridawati Hartati Dewi, Sri Hasyim, Nanda Kahrywal, Kahrywal MUHIBBAN, MUHIBBAN Rachmat Setiawan, Panji Raveena Putri, Citra Retno, Deddy Purnomo Ritonga, Qonita Sahril, Madian Sapitri Sri Hartati Dewi Sukmawati , Mega Ulfa Rahmawati