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INDONESIA
Jurnal Rekayasa Sipil dan Desain
Published by Universitas Lampung
ISSN : 23030011     EISSN : 27150690     DOI : -
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture
Arjuna Subject : -
Articles 545 Documents
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Studi Analisis El Nino Dan La Nina Terhadap Curah Hujan Mengunakan Fast Fourier Transform (FFT) Dan Lomb Periodogram (Studi Kasus : Provinsi Jawa Tengah Fathony, Awal Rifan; Zakaria, Ahmad; Wijaya, Riki Chandra; Kusumaastuti, Dyah Indriana
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 11 No. 2 (2023): Edisi Juni 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v11i2.3174

Abstract

Central Java Province is a potential area that has an important role in national food production. El Nino and La Nina events have a very large impact if they occur in Indonesia, especially in Central Java Province. This study aims to analyze the impact of El Nino and La Nina events specifically in Central Java Province where the areas more dominantly affected by El Nino and La Nina. The research location uses 3 rainfall stations, namely the Tunggal Wulung Meteorological Station, Tegal Maritime Meteorological Station, and Tanjung Emas Maritime Meteorological Station. The method used is the Fast Fourier Transform (FFT) method and the long periodogram. The results showed that the periods of El Nino and La Nina phenomena recurring using the FFT method are forecasts for the periods 2.2428, 2.8036, and 3.7381 years. While using the lom periodogram method, namely in the periods of 2,480, 2,621, and 3:16 years. The results of the analysis of the FFT method obtained results that varied in the height of rainfall at the 3 stations, while the results of the analysis using the periodogram log showed that the Tunggal Wulung rain station had the highest peak rainfall. This study concludes that there are variations in the peak incidence using either the slow periodogram or the FFT method. However, both of these methods and based on the BMKG and TRMM, the Tunggal Wulung Meteorological Station has the highest peak between Tegal Station and Tanjung Emas Station.
Studi Perbandingan Beban Gempa Pada Gedung Rawat Inap Non Bedah RSUD Dr. H. Abdul Moeloek, Bandar Lampung Dengan Analisis Respon Spektrum Sesuai SNI 1726:2012 dan SNI 1726:2019 Hania Cipta, Ade Permata; Isneini, Mohd.; Husni, Hasti Riakara; Kusnadi, Andi
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 11 No. 2 (2023): Edisi Juni 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v11i2.3189

Abstract

The rapidly growing population is directly proportional to the increasing amount of land use, especially in urban areas, one of which is in the city of Bandar Lampung. The construction of vertical structures or high-rise building structures is an option in overcoming the limited land. However, high-rise building structures are considered to be risky to lateral loads such as earthquake loads, so that in planning, earthquake loads must be considered.This study aims to determine differences in response to the earthquake acceleration spectrum in the City of Bandar Lampung, especially the Non-Surgical Inpatient Building at Dr. H. Abdul Moeloek based on SNI 1726:2012 and SNI 1726:2019. Based on the results of this study, it was found that due to the influence of the earthquake the input spectrum response was in accordance with SNI 1726:2012 and SNI 1726:2019, the base shear force due to the earthquake spectrum response for SNI 1726:2012 was 12900.4864 kN and SNI 1726:2019 was 14931.0787 kN . Interstory drift between levels that occur in the structure are still in the safe category because they do not exceed the story drift allowable levels, 48.4615 mm.
STUDI PERBANDINGAN PEMBEBANAN DINAMIS PADA JEMBATAN BETON TERHADAP PEMODELAN FEA Firdaus, Afridho; Alami, Fikri; Isnaeni, Mohd; Helmi, Masdar
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 11 No. 2 (2023): Edisi Juni 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v11i2.3190

Abstract

The natural frequency of the bridge is the frequency to determine the theoretical and experimental feasibility requirements of the bridge. The natural frequency value is used to determine the theoretical and experimental feasibility requirements of the bridge. Analysis of bridge behavior in resisting dynamic loads and comparing theoretical natural frequencies with field tests on prestressed concrete bridges with a span of 40 m using the line model and the shell model in the sap2000 application. Based on the results of bridge modeling using SAP 2000, the natural frequency on the model line is f○ 3.9876 hz and T 0.2507 seconds, while in shell modeling it is obtained f○ 16.045 hz and T 0.6232 seconds. When given a running load the frequency of the bridge in the shell model is f 15.577 hz and T 0.0642 seconds. The natural frequency value obtained from the model line is 3.9876 hz and the natural frequency from the shell model is 16.045 hz which in the shell model the frequency results are closer to the field test results of 16.67 hz with a ratio of 3.75%. The shell model is used as a comparison to the field model.
Karakteristik Campuran Aspal Porus Dengan Menggunakan Material Dari Lampung Suryatama, Noval; Putra, Sasana; herianto, dwi; Sulistyorini, Rahayu
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 11 No. 2 (2023): Edisi Juni 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v11i2.3270

Abstract

Porous asphalt is one of the asphalt mixtures being developed for wearing course construction. This layer uses open graded which is dominated by coarse aggregate, resulting in quite large voids. The material used in this study came from Lampung. The purpose of this study was to determine the characteristics of porous asphalt mixtures using materials from Lampung. The results of the aggregate testing show that aggregates originating from Lampung are able to meet the general specifications of Bina Marga in 2018. This study shows that the highest stability is found at 5.5% asphalt content with a stability value of 552.52 kg and the lowest stability at 6.5 asphalt content % with a stability value of 459.22 kg. The lowest flow value is found at 5% asphalt content, which is 5 mm, while the highest flow value is found at 6.5% asphalt content, which is 6.2 mm. The highest VIM was found at 4.5% asphalt content which was 21.77%, while the lowest VIM value was found at 6.5% asphalt content which was 14.07%. The highest cantabro loss value was found at 4.5% asphalt content, which was 39.11%, while the lowest cantabro loss value was found at 6.5% asphalt content, which was 13.91%. The lowest asphalt flow down value is found at 4.5% asphalt content, which is 0.16%, while the highest AFD value is found at 6.5% asphalt content, which is 1.30%. Based on the test specimens for the optimum asphalt content, the permeability coefficient value was 0.075 cm/second.
Pemetaan Kemiringan Lereng Menggunakan Software Geographic Information System Pada Sub DAS Way Pubian Setyanugraha, Tegar; Romdania, Yuda; Herison, Ahmad; Zakaria, Ahmad
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 11 No. 2 (2023): Edisi Juni 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v11i2.3274

Abstract

Land use utilization in a watershed must pay attention to the slope. The slope that will be analyzed is the slope of the Way Pubian Subwatershed, Way Seputih Watershed, Lampung Province. Over time, population growth will increase in the Way Pubian Subwatershed area resulting in land use change which is an important trigger factor for landslides. Perhaps slope mapping has been done in many places, but for the Way Pubian Subwatershed area it has never been done. So it is important to conduct slope mapping in the Way Pubian Subwatershed. The purpose of the study was to conduct slope mapping and its classification using ArcGIS. Based on the results of the analysis with ArcGIS obtained slope map in Way Pubian Subwatershed with five classifications namely flat (0-8%), ramps (8-15%), rather steep (15-25%), steep (25-45%), and very steep (>45%). Way Pubian Subwatershed has an area of 11,562.8762 Ha where 3,026.7852 Ha (26.1767%) is the classification of 25-45% slope class (Steep) which is the largest compared to the area of other classification classes. In the classification class flat (0-8%), ramps (8-15%) and rather steep (15-25%) do not have too much difference. While the very steep classification class (>45%) is the area with the least area. The conclusion is that the slope map is obtained with the largest classification of slope is in the steep class.
Analisis Indeks Erosivitas Hujan menggunakan Metode Bols dan Utomo (Studi Kasus: Sub DAS Way Pubian, Das Way Seputih, Provinsi Lampung) Agestia, Lady; Romdania, Yuda; Ashruri, Ashruri; Herison, Ahmad
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 11 No. 2 (2023): Edisi Juni 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v11i2.3275

Abstract

Indonesia has a tropical climate which results in high rainfall throughout the year. The high rainfall makes Indonesia prone to erosion. The ability of rainfall to cause erosion is called rainfall erosivity. The study aims to calculate the rainfall erosivity index in the Way Pubian Subwatershed area by comparing the Bols and Utomo methods. The research methods used include; data consistency test, rainfall analysis, and calculation of rainfall erosivity index. Based on several studies on the erosivity index, in the Indonesian region the calculation of the Bols Method erosivity index often gets a higher value than the Utomo Method because the data used for the calculation of the Bols Method requires more data than the Utomo Method which only uses monthly rainfall data. The conclusion is that the Bols Method erosivity index value is 2651.2120 and the Utomo Method is 1008.3435, the Bols Method erosivity index value is higher than the Utomo Method value with an interval of 1642.8685. The use of the Bols equation to calculate the erosivity index value is considered safer to use in estimating the erosion rate. Keywords: Bols, Rainfall Erosivity, Sub Das Way Pubian, Utomo
Perbandingan Metode Penentuan Intensitas Curah Hujan (Studi Kasus: Kawasan Wilayah Sukarame Bandar Lampung) Yanti, Cristi; Herison, Ahmad; Zakaria, Ahmad; Romdania, Yuda
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 11 No. 2 (2023): Edisi Juni 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v11i2.3276

Abstract

One of the main factors causing flooding in an urban area is rainfall intensity. Perhaps this research has been widely discussed in other studies, but this research was conducted in an area with rainfall characteristics that are different from other areas, so this research is expected to provide further information for flood management and water structure design in related areas. The purpose of the research is to obtain and compare rain intensity methods in order to select a method that is suitable for rainfall characteristics in the sukarame area.  The short-term intensity calculation method uses the Mononobe method because this method only requires maximum daily rainfall data. The calculation of rain intensity approach uses Talbot and Sherman methods to find the appropriate rain intensity method. The results showed that high-intensity rain lasts for a short duration. From the comparison results, different rain intensity analysis results were obtained, this may be due to the use of different settings from each method. It is concluded that the Mononobe method with the Sherman equation is most suitable for rainfall characteristics. Key words : Rainfall Intensity, Mononobe, Talbot, Sherman, IDF Curve.
Analisis Stabilitas Bangunan Pengaman Pantai (Revetment) di Pantai Muli Lampung Selatan Tomi, Muhammad; Zakaria, Ahmad; Tugiono, Subuh; Kusumastuti, Dyah Indriana
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 11 No. 2 (2023): Edisi Juni 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v11i2.3321

Abstract

This study analyzes the revetment structure located at Muli Beach, South Lampung, through wave analysis occurring at the beach. The stability of the coastal protection structure, revetment, at Muli Beach is of utmost importance due to safety and security concerns for beach users. If the revetment is unstable, it can cause damage to the structure and potentially pose hazards to the users. The aim of this research is to assess the stability of the revetment structure against high waves occurring at the beach. The analysis method employed in this study utilizes wave forecasting with a return period of 10 years. The analysis also encompasses the examination of the components constituting the revetment structure at Muli Beach. The research findings indicate that the composition of the revetment structure is unstable against high waves. The wave forecasting analysis at Muli Beach resulted in a significant wave height, Hs = 1,02 m and a wave height at breaking point Hb = 1,82 m. Regarding the structure's components, there are several shattered stones > 2, indicating inconsistency with the existing literature. In the analysis of the revetment toe protection, a stability coefficient value of Ns^3 = 290 was obtained, which can be considered safe. Based on these analysis results, it is recommended to implement necessary measures to prevent the collapse of the revetment structure during high wave events. Keywords: revetment, waves, stability, beach.
Pemetaan Tata Guna Lahan dengan Metode Supervised Classification Qur'ani, Mutiara Nurul; Romdania, Yuda; Zakaria, Ahmad; Herison, Ahmad
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 11 No. 2 (2023): Edisi Juni 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v11i2.3426

Abstract

Land use is used to determine the effect of community activities on the land use of an area. Currently, the search for land use information can be reviewed periodically with remote sensing technology. The aim of the research is to map land use and provide information to the public regarding the condition of land use in the Way Pubian Sub-watershed area. The method used in processing land mapping data is supervised classification based on the training samples that have been collected. The supervised classification method is available in ArcGIS software. The method of analysis refers to descriptive analysis, by describing the land use maps obtained. The results of the map show that land use in the Way Pubian Sub-watershed consists of ponds of 1.57 Ha with a percentage of land of 0.01%, forest land of 6719.14 Ha of a percentage of 57.83%, open land area of 122.58 Ha of percentage 1.06%, settlements 823.2 Ha a percentage of 7.08%, Plantations 2783.11 Ha a percentage of 23.95% and paddy fields 1169.34 Ha with a land percentage of 10.06%. Compared to Landsat imagery, map making is more effective if using high-resolution imagery, then Google Earth imagery is used as data processing material. The conclusion obtained by processing data with ArcGIS software helps in mapping land use, obtaining the area and percentage of land use. The percentage results show that the largest land use is forest land and the smallest land area is pond land.Keywords: map, land use, watershed, GIS, imagery
Pemetaan Ekowisata Terumbu Karang Berbasis Geographic Information System (GIS) di Pulau Pahawang Madany, Orista Ammar; Herison, Ahmad; Romdania, Yuda; Ashruri, A
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 11 No. 2 (2023): Edisi Juni 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v11i2.3429

Abstract

AbstractCoral reef ecosystems are threatened with extinction. Along with the development of technology, the distribution of coral reefs can be reviewed only by looking at an information map. The purpose of this research is to map coral reef ecotourism on Pahawang Island. So that it is expected to provide information to the community and also island developers related to the condition of the coral reef ecosystem on Pahawang Island. The method used in map processing is sentinel 2A image data processing with the guided classification method in ArcGIS software, while the analysis method is descriptive, which describes the results of the coral reef cover map. The results of the analysis and discussion found that Geographic Information System (GIS) based remote sensing with processed sentinel 2A imagery is very helpful in the process of finding information on the distribution of coral reefs on Pahawang Island. Data processing in ArcGIS software using guided classification methods can be used in order to produce coral cover maps. The results of the coral reef distribution map have an area of 128.64 Ha. The conclusion is that Geographic Information System (GIS) based remote sensing with ArcGIS software can be used to produce coral cover maps. On Pahawang Island, the coral reef cover area of 128.64 Ha was obtained.

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