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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 840 Documents
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Analysis of River Sediment Transport Way Sekampung (Upstream of Batutegi Dam) Using an Empirical Approach and HEC-RAS Modeling singgih pradipta; ofik taufik purwadi; margaretta welly
Jurnal Rekayasa Sipil dan Desain Vol 8, No 4 (2020): Edisi Desember 2020
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Abstract

Dams have various functions and benefits, such as irrigation sources, flood control, power generation, tourism etc. The problem that is concerned about the dams that have been built in developing countries such as Indonesia is in particular the problem of sedimentation in the reservoir. Way Sekampung is one of the rivers which is the source of water in the Batutegi reservoir. Way Sekampung has a large discharge. However, Way Sekampung which has a fairly heavy flow also carries sediment which must be taken into account so as not to disturb the stability of the existing river. Therefore, a research was conducted on sediment discharge and transport in the Way Sekampung river. The discharge analysis used field current meter data and sediment analysis used field sediment samples. Comparative data is calculated using the HEC-RAS application so that there are variations in the discharge in the calculation. The Way Sekampung River produces a sediment discharge of 0.0814 m3 / s at Cross Section 1 and 0.0999 m3 / s in Cross Section 2 using the Meyer Peter and Muller method. Compared with empirical calculations, the sediment rate value is 0.0822 m3 / s in Cross Section 1 and 0.0798 m3 / s in Cross Section 2 using HEC-RAS discharge modeling and Einstein method.
Analisis Kinerja Redaman Gelombang pada Breakwater Tenggelam Tipe Berlubang Dengan Pemodelan Fisik 2D Ivana Aprili Andika; Subuh Tugiono; Ahmad Zakaria; Endro P. Wahono
Jurnal Rekayasa Sipil dan Desain Vol 9, No 1 (2021): Edisi Maret 2021
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Loss of land due to coastal erosion that occurs naturally by wave abrasion. Therefore, to protect the coast from erosion or other matters, a breakwater is needed which destroys the energy of the waves before reaching the shore. This is the background of the author in taking the title of the thesis about the Performance Analysis of Wave Attenuation in the Hollow Type Breakwater Submerged Type 2-D Physical Modeling. The variables used in this study were incident wave height (Ho), calm water level (ds), and breakwater type. The results of this study indicate that the damping coefficient (Cr) was obtained using a sinking breakwater without a hole with a calm water level (ds) of 2 cm of 0.479 which is the most effective damping produced in an experiment using a breakwater that is free from calm water surface (ds). 2 cm. The wave attenuation obtained from the wave defraction test using 2 types of breakwaters resulted that the breakwater without the damping hole was greater than using a perforated breakwater.
Evaluasi Kinerja Struktur Gedung Bertingkat Menggunakan Nonlinear Static Pushover Analysis dengan Capacity Spectrum Method (CSM) (Studi Kasus: Gedung B Rumah Sakit Umum Muhammadyah Metro) Risa Kurniawati; Bayzoni Bayzoni; Hasti Riakara Husni; Mohd Isneini
Jurnal Rekayasa Sipil dan Desain Vol 9, No 4 (2021): Edisi Desember 2021
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AbstractIndonesia is an earthquake prone area. One of the efforts to anticipate these impacts is to meet the needs of earthquake-resistant buildings. The building must provide optimal performance. Therefore, we need an analysis of earthquake forces in this case pushover analysis. Pushover analysis is an analysis in which the influence of the design earthquake on the structure is considered as a static load that captures the center of mass of each floor.This research takes a case study in Muhammadyah Metro General Hospital Building (B). The purpose of this study to determine the performance point and building performance level using pushover analysis with the capacity spectrum method (CSM). The standard provisions used in this study refer to SNI 1727-2020, SNI 1726-2019, FEMA-440 (2005), and ATC-40 (1996).Based on the results, it can be concluded that this Building shows performance with a level of damage control . However, the structure of this building in the existing condition doesn’t meet the ideal collapse concept. Therefore, the partial ductile behavior of the building results in structural damage but doesn’t collapse. The earthquake has a probability of being exceeded during the life of the structure of 50 years is 10%. Keywords: Pushover Analysis, Earthquake-resistant Buildings, Performance Level AbstrakIndonesia merupakan wilayah rawan gempa bumi. Salah satu upaya untuk mengantisipasi dampak tersebutadalahdengan memenuhi kebutuhan bangunan tahan gempa. Bangunan harus memberikan kinerja yang optimal. Maka dari itu, diperlukan suatu analisis gaya gempa dalam hal ini analisis pushover. Analisis pushover adalah analisis yang mana pengaruh gempa rencana pada struktur dianggap sebagai beban statik yang menangkap pada pusat massa masing-masing lantai.Penelitian ini mengambil studi kasus pada Gedung B Rumah Sakit Umum Muhammadyah Metro. Penelitian ini bertujuan untuk mengetahui performance point dan kriteria level kinerja gedung menggunakan analisis pushover dengan capacity spectrum method (CSM). Adapun peraturan standar yang digunakan pada penelitian ini meliputi SNI 1727-2020, SNI 1726-2019, FEMA-440 (2005), serta ATC-40 (1996).Berdasarkan hasil penelitian disimpulkan bahwa Gedung menunjukkan kinerja damage control . Namun, struktur gedung ini pada kondisi eksisting tidak memenuhi konsep keruntuhan ideal. Dengan demikian, perilaku daktail parsial mengakibatkan kerusakan struktur tetapi tidak runtuh. Gempa tersebut memiliki masa layan selama umur struktur bangunan 50 tahun adalah 10%.Kata Kunci : Analisis Pushover, Bangunan Tahan Gempa, Level Kinerja
Evaluasi Stabilitas Lereng Pada Ruas Jalan C.10 Perumahan Citraland Bandar Lampung Menggunakan Program Komputasi dan Penanggulangannya Muhammad Nur Kholiq; Iswan Iswan; Aminudin Syah; Ahmad Zakaria
Jurnal Rekayasa Sipil dan Desain Vol 9, No 4 (2021): Edisi Desember 2021
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Citraland is a located in a hilly area, has steep contours and different elevations. So the area has the potential for landslides. This study is to analyze the value of the slope safety factor and calculate the slope stability using a concrete sheet pile with a computational program. The methods used are the Fellenius, Bishop, Janbu, and Morgenstern-price methods. From the results of the computational program analysis, the values of the existing slope safety factors using the Fellenius, Bishop, Janbu, and Morgenstern-price methods were 0.965, 1.052, 0.925, 1.027 for static conditions and for dynamic conditions of 0.795, 0.881, 0.763, 0.858 . After countermeasures using concrete sheeting with dimensions of 3 meters of pile height on the ground, 1.66 meters of embedded sheeting, and 0.5 meters of sheet pile thickness, the existing slope safety factor values are 2.381, 2.478, 1.817, 2.732 for static loads and for dynamic loads. obtained values of 1.976, 2.073, 1.505, and 2.356. Countermeasures using concrete sheet piles are quite effective in increasing the value of the safety factor, so that countermeasures using concrete sheet piles are quite stable if applied at the research site. Keywords:Slope stability, Safety factor,Fellenius, Bishop, Janbu,Morgenstern-price, Sheet pile
Perbandingan Analisis Data Curah Hujan yang Hilang Menggunakan Metode Normal Ratio, Inversed Square Distance, Rata-Rata Al-jabar, dan Regresi Berganda Rinaldi Pelawi; Ahmad Zakaria; Siti Nurul Khotimah
Jurnal Rekayasa Sipil dan Desain Vol 8, No 2 (2020): Edisi Juni 2020
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Abstract

Data curah hujan bagian yang sangat penting untuk perencanaan teknik sumber daya air bisa juga digunakan untuk memprediksi kejadian hujan dimasa yang akan datang. Pencatatan data curah hujan terkadang terjadi suatu hal yang tidak diinginkan seperti terdapat kekosongan data curah hujan pada daerah tertentu, hal ini tentu sangat berdampak pada perhitungan analisis. Data hujan yang hilang bisadiprediksi dengan menggunakan metode rata-rata aljabar, inversed square distance, normal ratio dan regresi berganda.Pada penelitian ini tujuan untuk menghitung korelasi data curah hujan terukur dengan data curah hujan hasil perhitungan dengan masing-masing metode menggunakan lima stasiun. Serta menentukan membandingkan 4 metode tersebut dengan menggunakan 4 metode metode rata-rata aljabar, inversed square distance, normal ratio dan regresi berganda dengan data hujan maksimal untuk menggantikan data curah hujan yang hilang.Hasil yang dilakukan dapat diambil kesimpulan data terukur semakin dekat dengan 1 maka korelasi semakin tinggi, jika semakin dekat dengan -1 maka korelasi semakin rendah. Hal ini karena korelasi antara -1 dan 1 atau – 1 ≤ ???? ≤ 1. Jadi, dari beberapa metode normal ratio, inversed square distance, rata-rata al-jabar, regresi berganda didapatkan hasil metode normal ratio dengan rata-rata korelasi setiap stasiun curah hujan senilai 0,365 yang dikategorikan korelasi cukup baik.  Kata kunci : curah hujan, metoderata-rata aljabar, metode inversed square distance, metode normal ratio, metoderata-rata regresi berganda, korelasi pearson, standar deviasi.
Peran Semen Portland Tipe I dan Portland Komposit Atas Ketidaksesuaian Perkembangan Kuat Tekan Pada Beton Normal Terhadap PBI 1971 Prima Sandy Yonanda; Chatarina Niken DWSBU; Vera Agustriana Noorhidana
Jurnal Rekayasa Sipil dan Desain Vol 8, No 3 (2020): Edisi September 2020
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The code about concrete compressive strength progress is presented on Table 4.1 of PBI 1971. But the concrete compressive strength development in many current concrete construction projects often face one similar major problem which is the incompability between concrete compressive strength progress compared to PBI 1971. To identify that problem, this research was done by creating 160 cube concrete samples from OPC and 120 cube concrete samples from PCC by using 4 different PCC and OPC brands that consist of Dynamix, Baturaja, Tigaroda and Padang. Moreover, the samples are consists of 2 different targeted concrete compressive strength which are K250 and K400 and the samples were tested in the age of 7, 14, 21, 28 and 56 days. Aside of that, the chemical properties in each of used cements that consist of Tricalcium Silicate (C3S), Dicalcium Silicate (C2S), Tricalcium Aluminate (C3A) and Tetracalcium Aluminoferrit (C4AF) were also tested to identify the impact of chemical properties of cements to the compressing strength progress of all samples.Based on the research, it was identified that the chemical properties of cements that consist of C3S, C2S, C3A and C4AF were very influential in the process of compressive strength progress of all samples. In addition, the coeffiecients presented on SNI-15-2049-2015 Chapter 5 Table 5 used to calculate the percentage of C3S, C2S, C3A and C4AF need further reviews. Last, it was known that the compressing strength development of both OPC and PCC samples were not aligned to the PBI 1971 estimation. Besides, the procedure of all samples have followed the British Standard and ASTM regulation. In conclution, based on the research PBI 1971 was no longer relevant to be used as the reference for concrete compressing strength progress. Keywords: Concrete, compressive strength progress, cement chemical properties, incompability, tricalcium silicate, dicalcium silicate, tricalcium aluminate, tetracalcium aluminoferrite.
Analisis Efisiensi dan Kehilangan Air pada Jaringan Irigasi Daerah Irigasi Sekampung Bunut Elok Budi Utami; Dyah Indriana Kusumastuti; Dwi Joko Winarno
Jurnal Rekayasa Sipil dan Desain Vol 8, No 4 (2020): Edisi Desember 2020
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Considering the bad impact of water loss which has an impact on its efficiency, the authors are interested in analyzing the efficiency and water loss in irrigation networks in the Sekampung Bunut Irrigation Area (DI). Efficiency and water losses were analyzed using the in-discharge discharge method. The data used in this analysis consist of primary data in the form of flow velocity data with current meters, irrigation channel cross-sections, temperature data, humidity data, then secondary data, namely data on the length of solar radiation and wind speed data. Loss of water in the secondary irrigation channel KR Irrigation Area (DI) of Sekampung Bunut lost an average of 17.15%. Meanwhile, the efficiency of the secondary channel in the Irrigation Area (DI) of Sekampung Bunut was 82.85%. The theoretical value of the average efficiency in the secondary channel KR is 90%. This shows that the amount of efficiency is still below the requirements of theoretical efficiency. One of the factors that cause water loss in the secondary channel in the Sekampung Bunut Irrigation Area is the evaporation factor that occurs along the irrigation channel. Keywords: Channel efficiency, water loss, water discharge.
Flyover Development Effectiveness In The Road Of Teuku Umar - Za Pagar Alam Bandar Lampung Ridho Pradana; Rahayu Sulistyorini; Muhammad Karami
Jurnal Rekayasa Sipil dan Desain Vol 9, No 1 (2021): Edisi Maret 2021
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Congestion problems are common in transportation, congestion can be caused by several things. The construction of the flyover is expected to be able to overcome congestion in the long term. This research was conducted to determine the effectiveness of the flyover construction on the Teuku Umar - ZA Pagar Alam road. This research was conducted during busy hours on Monday at the Teuku Umar road, ZA Pagar Alam and the nearest intersection.. From the results of calculations and analysis, it can be seen that the construction of an elevated bridge has no significant impact on the decomposition of the congestion problem in the Kedaton area and its surroundings, this can be seen from the level of service on all roads in the study area with a value of V / C Ratio <0.75. Meanwhile, the average degree of saturation obtained from the analysis of intersections with signal and no signal> 0.75. Construction of a flyover which illustrates that it will unravel traffic jams, in fact the performance of the flyover and the main road underneath has not increased. This needs to be addressed immediately considering the current traffic flow in Kedaton and its surroundings is already saturated. Therefore, the growth of vehicles is on time, and public transportation facilities need to be improved. So that people begin to switch to public transportation in order to reduce the incidence of congestion on these roads. Keywords : Road Performance, Degree of Saturation, Level of Road Service
Evaluasi Kekuatan Struktur Gedung Bertingkat Akibat Pengaruh Beban Gempa Menggunakan Analisis Dinamik Respon Spektrum (Studi Kasus: Gedung B Rumah Sakit Umum Muhammadyah Metro) Masrifatun Fadzilah; Hasti Riakara Husni; Bayzoni Bayzoni; Mohd Isneini
Jurnal Rekayasa Sipil dan Desain Vol 9, No 4 (2021): Edisi Desember 2021
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AbstractIndonesia is an area with a high level of earthquake vulnerability. One of the efforts to anticipate these impacts is to meet the needs of earthquake-resistant buildings. In this case, it is necessary to carry out a comprehensive planning and evaluation of earthquake-resistant buildings by taking into account the lateral forces caused by earthquake loads in accordance with the latest regulations. This research takes a case study in Building B of the Muhammadiyah Metro General Hospital. In planning, the structure of the building still uses the old regulations, namely SNI 1726-2012, SNI 1727-2013, and SNI 2847-2013. Meanwhile, currently the latest planning standards have been implemented, namely SNI 1726-2019, SNI 1727-2020, and SNI 2847-2019, so it is necessary to evaluate the strength of the structure using the latest regulations. This study aims to compare the results of evaluating the strength of high-rise buildings due to the influence of earthquake loads and without earthquake loads using the dynamic response spectrum analysis method. Based on the results of the study, it was concluded that the building structure was not strong enough to withstand earthquake loads, and there was a significant difference between conditions without earthquake loads and with the influence of earthquake loads. Keywords: Response Spectrum Analysis, Earthquake Resistant Building, Evaluation of Structural Strength AbstrakIndonesia merupakan wilayah dengan tingkat kerawanan gempa yang tinggi. Salah satu upaya untuk mengantisipasi dampak tersebutadalahdengan memenuhi kebutuhan bangunan tahan gempa. Dalam hal ini perlu dilakukan perencanaan dan evaluasi yang menyeluruh terhadap bangunan tahan gempa dengan memperhitungkan gaya lateral yang diakibatkan oleh beban gempa sesuai dengan peraturan terbaru.Penelitian ini mengambil studi kasus pada Gedung B Rumah Sakit Umum Muhammadyah Metro. Dalam perencanaannya, struktur gedung tersebut masih menggunakan peraturan lama yaitu SNI 1726-2012, SNI 1727-2013, dan SNI 2847-2013. Sedangkan untuk saat ini telah diberlakukan standar perencanaan terbaru yaitu SNI 1726-2019, SNI 1727-2020, dan SNI 2847-2019, sehingga perlu dilakukan evaluasi kekuatan struktur dengan menggunakan peraturan terbaru tersebut.Penelitian ini bertujuan untuk mengetahui perbandingan hasil evaluasi kekuatan struktur gedung bertingkat akibat pengaruh beban gempa dan tanpa beban gempa menggunakan metode analisis dinamik respon spektrum. Berdasarkan hasil penelitiandisimpulkan bahwa struktur gedung tidak cukup kuat untuk menahan beban gempa, dan terdapat perbedaan yang signifikan antara kondisi tanpa beban gempa dan dengan pengaruh beban gempa. Kata Kunci : Analisis Respon Spektrum, Bangunan Tahan Gempa, Evaluasi Kekuatan Struktur
Pengaruh Penambahan Arang Tempurung Kelapa Terhadap Durabilitas Campuran Asphalt Concrete Wearing Course (AC-WC) Alfina Dwi Putri; Sasana Putra; Rahayu Sulistyorini; Dwi Herianto
Jurnal Rekayasa Sipil dan Desain Vol 10, No 1 (2022): Edisi Maret 2022
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With the rise in the number of vehicles on Indonesian roads, the frequency of loads that occur on road pavements rises, and extreme weather changes can damage the pavement layer, particularly at the level of durability (durability), particularly at the top layer, namely the AC-WC (Asphalt Concrete Wearing Course). As a result, it is required to improve the quality of road surface, one of which is to add additives to asphalt mixtures. Coconut shell waste, which is converted into charcoal, was used as an additive in this study. Because coconut shell waste is readily available in Indonesia, but its utilization is inefficient, this study intends to assess the effect of adding coconut shell charcoal at levels of 0%, 3%, 6%, and 9% on the durability of asphalt mixtures. Furthermore, the test objects at each level of coconut shell charcoal were submerged for 30 minutes, 1 day, 7 days, and 14 days at a temperature of 60˚C. Because coconut shell charcoal is an organic material, it is susceptible to the influence of water, the effect of adding coconut shell charcoal to the AC-WC mixture in terms of the First Durability Index (IDP) and Second Durability Index (IDK) values show a greater loss of strength as the coconut shell charcoal content increases.

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