Nanda

Verified @upiyptk.ac.id

Civil Engineering



           

https://researchid.co/nanda91

RESEARCH INTERESTS

Geotechnical Engineering

5

Scopus Publications

12

Scholar Citations

2

Scholar h-index

Scopus Publications

  • NUMERICAL ERROR METHOD TO DETERMINE THE EFFICIENCY OF REDUCING VIBRATIONS DUE TO EARTHQUAKE LOADS ON BUILDINGS USING FLUID VISCOUS DAMPER
    Radius Prawiro, Rafki Imani, and Nanda Nanda
    Universitas Pattimura
    According to The Indonesian Earthquake Map, Padang City in West Sumatra is in Earthquake zone 6. This indicates that Padang City is very vulnerable to earthquakes. Meanwhile, developments in the construction of high buildings also continue to show progress all the time. The main problem that is often faced is the issue of structural damage due to earthquakes. Efforts are needed in earthquake engineering on buildings so that collapse can be minimized. The earthquake damping system used is FVD (Fluid Viscous Dampers) with different types. The Type-A damper is FVD-750 kN and the Type-B damper is FVD-1000 kN, and without using a damper. This research aims to analyze the efficiency of reducing earthquake loads such as floor displacement and vibration period of an 18-story building structure 18 meters high from the base.The analysis method used is a numerical method by calculating earthquake load reduction based on numerical error analysis from the two types of dampers used on structures without using dampers. Building planning refers to SNI 1727-2013, SNI 1726-2019, and SNI 2847-2019, and is assisted by ETABS software. Based on SNI 1726-2019, earthquake risk category II, soft soil condition type (SE), earthquake acceleration response value SDS = 0.745g and SD1 = 0.784g are obtained. The earthquake load used is a dynamic load, taking into account that the condition of the building is irregular. Based on the results of the analysis, it was found that the displacement between floors using the Type-AFVD Damper could reduce the displacement by up to 45.72% and with the Type-B FVD Damper it could reduce the displacement by up to 92.72%. Meanwhile, the period of vibration natural using a Type-A FVD Damper can be reduced by up to 12.34% and using a Type-B FVD Damper can be reduced by up to 33.21%.

  • Prediction of Ground Surface Deformation Induced by Earthquake on Urban Area Using Machine Learning
    Fathoni Usman, Nanda Nanda, and Josaphat Tetuko Sri Sumantyo
    ARTS Publishing
    Earthquakes can inflict significant damage to structures and infrastructures. This paper presents a machine learning model to predict ground surface deformation (GDS) induced by earthquake events. The data on historical GSD is extracted from radar product of Synthetic Aperture Radar (SAR) data of one-year over five magnitude earthquakes that occurred within 200 kilometers of the Kota Padang Regency, West Sumatra. Building topology data of its footprint area, distance from shoreline, elevation, and coordinate were incorporated as the main features in the dataset. The earthquake parameters were taken from the USGS earthquake data catalog. Four machine learning algorithms of Neural Network (NN), Random Forest (RF), k-Nearest Neighbors (kNN), and Gradient Boosting (GB) are applied. The GSD from the trained models is predicted and compared with the measured GSD from the SAR’s product. The performances of proposed algorithms are evaluated in terms of the statistical index. A new dataset from the earthquake event in March 2022 is used to predict the GSD and further test the performance of the trained models. Overall, the four machine learning algorithms have outstanding performance, with a coefficient determinant of more than 0.9. The kNN algorithm outperforms compared to others in delineating the GSD. The trained models gave deficient prediction performance on the new dataset with a correlation coefficient of 0.228 predicted by the RF algorithm. Additional earthquake datasets and more unique features will improve the performance of the machine learning algorithms.

  • Comparative analysis on digital surface model of urban area from Sentinel-1 SAR interferometry and aerial photogrammetry for disaster mitigation plan
    Fathoni Usman, Nanda, Rita Nasmirayanti, and Josapath Tetuko Sri Sumantyo
    EDP Sciences
    This paper presents an effort to evaluate the generated digital elevation model (DEM) from an active sensor onboard satellite of Sentinel-1A and from aerial photos taken using an unmanned aerial vehicle (UAV). The objective is to compare the quality of generated DEM and review the processes for disaster mitigation and prevention plans application. The radar data acquisition used in this study is pair of SLC-type radar data. The interferogram is processed from the coherence and the phase of complex data of the pair radar imageries. Meanwhile, aerial photography was taken within the smaller urban area in Padang City. The photogrammetry process to generate the DEM was conducted using the structure from motion (SfM) technique. The quality and procedures are reviewed by comparing the DEM products with other publicly available DEM data from DEMNAS, SRTM, and AW3D. This study found that generating the DEM from Sentinel-1 interferometry SAR is a challenging process. The product is unmatched and has lower quality compared to available DEM data due to several identified factors. In contrast, high computational cost photogrammetry produced good quality DEM if sufficient ground control points (GCP) were set.

  • Investigation of unstable soil stabilized using fly-ash cement grouting
    K Jayasinghe, V Anggraini, A Syamsir, and Nanda
    IOP Publishing
    Abstract The deep soil with a relatively poor compressive strength has been an issue for the researchers and constructors for years since the hardships faced by them when trying to construct heavy structures on top of them. It is found that weak soils like those can be strengthened by adding different additives. Cement is commonly used for the above purpose but, since it’s expensive to use alone, cement mixed with fly ash was tested with different soils to strengthen them. The aim of the research was to find out the increase/decrease of strength when two different cement and fly ash mixtures were mixed with three different types of soils common in Malaysia in different proportions and to find the optimum percentages of each mixture to be mixed with each soil to obtain a desired strength. The Modified Standard Proctor test and the Unconfined Compressive Strength (UCS) tests were carried to study the behaviour and strength of the soils when mixed with the above additives.

  • Surface Deformation of Padang City Area Induced by over M<inf>w</inf>5.0 Earthquake Events
    Fathoni Usman and Nanda
    IEEE
    This paper presents a study on the surface deformation of Padang City area induced by over Mw 5.0 earthquake measured by using remote sensing of active sensor radar data. Padang City is an area with over 909 thousand and population density per sq. km of 1,309 within 694 km2. With its location facing the Andaman Sea, where the subduction zone is stretched, Padang City is highly vulnerable to natural hazards induced by earthquakes. This study used pairs of radar data from Sentinel-1 satellites selected based on relatively close to the post-earthquake events. The distances of the epicenter of the earthquakes are within 200 km from the study area. The short baseline technique analyzed the radiometric information on phase and amplitude in the single look complex (SLC) type of radar data. A correlation study has been used to determine the vulnerable area prone to natural hazards induced by earthquakes. From this study map of the vulnerable area that is responsive to the earthquake, events are delineated. There are 49.5% of the building blocks is in the medium vulnerability. The lowest and the highest vulnerability are less than 2%.

RECENT SCHOLAR PUBLICATIONS

  • Comparative Study of Soil Stabilization Using Ceramic Waste Powder and Glass Waste Powder as Additive
    N Nanda
    Jurnal Aplikasi Teknik Sipil 22 (4), 329-334 2024

  • Seepage Analysis Beneath Gravity Concrete Dam Using Flow Net Method and PLAXIS 2D
    V Anggraini, MHA Putra, N Nanda, R Nasmirayanti
    Journal of Material Science and Technology Research 11, 84-89 2024

  • Effect of Organic Waste Materials on Clays Soil Properties
    N Nanda, R Nasmirayanti, A Saputra, HF Masril, RK Putra
    Jurnal Arsip Rekayasa Sipil dan Perencanaan 6 (3), 207-215 2023

  • EFFECT OF ORGANIC WASTE MATERIALS ON CLAYS SOIL PROPERTIES
    RKP Nanda Nanda, Rita Nasmirayanti, Almy Saputra, Hasanah Fitria Masril
    Jurnal Arsip Rekayasa Sipil dan Perencanaan 2023

  • ANTISIPASI DAN SOLUSI TERHADAP TINDAK KEKERASAN SEKSUAL DI LINGKUNGAN SMAN 78 JAKARTA
    RSA Muhammad, AS Permatasari, AF Saputra, A Lestari, ...
    Pendidikan Karakter Unggul 1 (6) 2023

  • Prediction of Ground Surface Deformation Induced by Earthquake on Urban Area Using Machine Learning
    JTSS Fathoni Usman, Nanda
    https://sciencetechindonesia.com/index.php/jsti/article/view/499/265 7 2022

  • Surface Deformation of Padang City Area Induced by Over Mw 5.0 Earthquake Events
    F Usman
    2021 International Conference on Computer Science and Engineering (IC2SE) 1, 1-7 2021

  • Investigation of unstable soil stabilized using fly-ash cement grouting
    K Jayasinghe, V Anggraini, A Syamsir
    IOP Conference Series: Earth and Environmental Science 708 (1), 012019 2021

  • Perancangan Pengembangan Objek Wisata Lubuak Soda Nagari Tambangan Kabupaten Tanah Datar Sumatera Barat
    M Sufina, N Nanda
    Rang Teknik Journal 4 (1), 123-126 2021

  • Comparative analysis on digital surface model of urban area from Sentinel-1 SAR interferometry and aerial photogrammetry for disaster mitigation plan
    F Usman, N Nanda, R Nasmirayanti, JTS Sumantyo
    E3S Web of Conferences 331, 04017 2021

  • Studi Stabilitas Lereng Jalan Tarusan PainanPesisir Selatan dan Penanggulangannya
    N Nanda
    Civil Engineering Collaboration, 82-91 2020

  • Perencanaan Ulang Pondasi Pilar Jembatan Sikabu Kayu Gadang
    N Nanda, M Chairi, NF Rahmat
    Civil Engineering Collaboration, 64-67 2020

  • ANALISIS STABILITAS LERENG DAN PENGARUH PEMASANGAN DINDING PENAHAN TANAH KANTILEVER (Studi Kasus: Lereng Batu Apit, Sicincin-Malalak)
    N NANDA
    Universitas Andalas 2014

MOST CITED SCHOLAR PUBLICATIONS

  • Comparative analysis on digital surface model of urban area from Sentinel-1 SAR interferometry and aerial photogrammetry for disaster mitigation plan
    F Usman, N Nanda, R Nasmirayanti, JTS Sumantyo
    E3S Web of Conferences 331, 04017 2021
    Citations: 4

  • Surface Deformation of Padang City Area Induced by Over Mw 5.0 Earthquake Events
    F Usman
    2021 International Conference on Computer Science and Engineering (IC2SE) 1, 1-7 2021
    Citations: 3

  • Investigation of unstable soil stabilized using fly-ash cement grouting
    K Jayasinghe, V Anggraini, A Syamsir
    IOP Conference Series: Earth and Environmental Science 708 (1), 012019 2021
    Citations: 2

  • Studi Stabilitas Lereng Jalan Tarusan PainanPesisir Selatan dan Penanggulangannya
    N Nanda
    Civil Engineering Collaboration, 82-91 2020
    Citations: 2

  • Effect of Organic Waste Materials on Clays Soil Properties
    N Nanda, R Nasmirayanti, A Saputra, HF Masril, RK Putra
    Jurnal Arsip Rekayasa Sipil dan Perencanaan 6 (3), 207-215 2023
    Citations: 1