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Tinjauan Tundaan Perjalanan Perlintasan Sebidang pada Segmen Jalan Haji Komarudin Menggunakan Metode Gelombang Kejut Sembada, M. Arif Yoga; Putra, Sasana; Herianto, Dwi; Sulistyorini, Rahayu
Jurnal Rekayasa Sipil dan Desain Vol. 10 No. 4 (2022): Edisi Desember 2022
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v10i4.2784

AbstrakPerlintasan sebidang jalan rel kereta api pada segmen ruas Jalan H. Komarudin Bandar Lampung sering menimbulkan kemacetan sehingga menyebabkan tundaan dan panjang antrian. Penelitian ini bertujuan untuk mengetahui nilai arus, kecepatan, dan kepadatan lalu lintas yang terjadi di perlintasan sebidang kereta api di Jalan H. Komarudinserta mengetahui besarnya tundaan dengan metode gelombang kejut berdasarkan nilai EKR (Ekuivalen Kendaraan Ringan) yang diperoleh dari metode rasio headway. Perhitungan nilai gelombang kejut berdasarkan model linier Greenshields. Hasil penelitian pada pengamatan menunjukkan peningkatan waktu tempuh dari 11,86 detik menjadi 17,55 detik akibat adanya antrian kendaraan. Sedangkan Gelombang kejut yang terjadi pada ruas Jalan H. Komarudin akibat antrean perlintasan sebidang jalan rel secara berturut-turut adalah sebagai berikut gelombang kejut maju bentukan (ωda) sebesar 14,41 km/jam; gelombang kejut mundur bentukan (ωab) sebesar -2,22 km/jam; gelombang kejut maju pemulihan (ωdc) sebesar 18,53 km/jam; gelombang kejut mundur pemulihan (ωcb) sebesar -5,24 km/jam; dan gelombang kejut maju pemulihan (ωac) sebesar 9,56 km/jam. Kata Kunci: Tundaan, Gelombang Kejut, Ekuivalensi Kendaraan Ringan (EKR), headway, Model Greenshield, Panjang Antrian.

Kajian Tundaan Perjalanan Pada Daerah Tanjakan Menggunakan Metode Gelombang Kejut (Studi Kasus : Tanjakan Tarahan, Lampung) Kusuma, I Gusti Made Ferdi; Putra, Sasana; Putri Ofrial, Siti Anugrah Mulya; Herianto, Dwi
Jurnal Rekayasa Sipil dan Desain Vol. 10 No. 4 (2022): Edisi Desember 2022
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v10i4.2793

Trase tanjakan jalan raya menyebabkan terjadinya antrian atau tundaan. Penelitian ini berlokasi di Tanjakan Tarahan, Jalan Lintas Sumatra, Lampung Selatan. Terbentuknya Gerakan gelombang kejut akibat adanya tanjakan dan kendaraan besar menanjak ini menyebabkan kecepatan turun atau tundaan. Penelitian ini bertujuan untuk menganalisis tundaan dengan pendekatan gelombang kejut berdasarkan nilai EKR (Ekivalen Kendaraan Ringan) yang didapat dari metode rasio headway.Perhitungan nilai gelombang kejut berdasarkan model linier Greenshield. Berdasarkan analisis rasio headway didapatkan nilai ekivalen kendaraan ringan (EKR) untuk sepeda motor (SM) sebesar 2,072 sementara untuk kendaraan berat (KB) 0,489. Hasil penelitian menunjukkan peningkatan waktu tempuh kemiringan 1 dari 16,63 detik pada saat normal meningkat menjadi 28,28 detik pada saat antrian kendaraan, sedangkan kemiringan 2 dari 27,47 detik saat normal meningkat menjadi 58,60 detik saat adanya antrian kendaraan. Pada perhitungan kendaraan mengalami penurunan kecepatan, kemiringan 1 saat awal tanjakan 56,54 km/jam, pada saat tanjakan mengalami penurunan kecepatan menjadi 23,37 km/jam. Sedangkan kemiringan 2 saat awal tanjakan 43,24 km/jam dan pada saat tanjakan mengalami penurunan kecepatan menjadi 19,97 km/jam.

Analisis Tundaan dan Panjang Antrean Akibat Penutupan Palang Pintu Kereta Api “Jalan Perintis Kemerdekaan” Putri, Dinda Maya Sari; Putra, Sasana; Karami, Muhammad; Sulistyorini, Rahayu
Jurnal Rekayasa Sipil dan Desain Vol. 10 No. 4 (2022): Edisi Desember 2022
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v10i4.2841

Jalan Perintis Kemerdekaan merupakan persimpangan sebidang tak bersinyal yang sering mengalami kepadatan arus lalu lintas karena adanya perlintasan yang terbentuk dari pertemuan antara dua jenis prasarana transportasi yaitu jalan raya dengan jalan rel. Sehingga aktivitas perjalanan terganggu akibat lintasan kereta api dan banyaknya aktivitas disepanjang jalan menyebabkan antrean kendaraan yang panjang dikarenakan peningkatan volume lalu lintas dan besarnya tundaan yang terjadi. Tujuan penelitian ini menganalisis tundaan dan panjang antrean akibat pertemuan jalan raya dan jalan rel. Pengambilan data dilakukan melalui survei 1 hari kerja. Data yang dianalisis adalah volume, durasi penutupan palang pintu kereta api, tundaan, waktu gap dan panjang antrean kendaraan. Penentuan waktu gap kritis menggunakan metode Gap Acceptance. Hasil analisis yang di dapatkan yaitu : rata-rata penutupan palang pintu perlintasan sebesar 285,29 detik pada pagi hari dan 165,45 detik pada sore hari, rata-rata tundaan sebesar 411,19 detik pada pagi hari dan 377,45 detik pada sore hari, dan panjang antrean mencapai 50 meter di arah Jalan Perintis Kemerdekaan – Jalan Gatot Subroto. Kata Kunci :volume; gap acceptance; tundaan;panjang antrean

Karakteristik Arus Lalu Lintas Pada Jalan 2/2 Tidak Terbagi Sari, Yulianti Dewi Manda; Putra, Sasana; Sulistyorini, Rahayu; Herianto, Dwi
Jurnal Rekayasa Sipil dan Desain Vol. 11 No. 1 (2023): Edisi Maret 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v11i1.2992

The conditions of volume, speed, and density are influenced by the interaction of the driver and the vehicle with the road and the environment. One of the way to understand traffic behavior is by describing it in mathematical and graphical form.Through analysis of the relationship between volume, speed, and density can be known information about the current traffic flow conditions. The Greenshield model is used to represent the mathematical relationship between volume, speed, and density. The purpose of the study to analyze the characteristic relationship on 2/2 roads with an undivided type. Based on the results of calculating the mean speed, the service level of this road is type E. The mean speed in the morning is 28.78 km/hour towards Teluk and 25.44 km/hour towards Tanjung Karang. It concluded that the mean speeds of vehicles at this research location are not according to the Regulation of the Minister of the Republic of Indonesia Number 96 of 2015, where for secondary arterial roads with a service level of at least C, namely 60 km/hour.Based on the analysis of the relationship between traffic characteristics using the Greenshield model obtained (r2) = 0,276.

Durabilitas Campuran Porous Asphalt Dengan Limbah Plastik Polietilena Tereftalat (PET) Sebagai Bahan Tambah Pada Aspal Harahap, Ananda Wirawan Tritama; Putra, Sasana; Herianto, Dwi; Sulistyorini, Rahayu
Jurnal Rekayasa Sipil dan Desain Vol. 11 No. 1 (2023): Edisi Maret 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v11i1.3059

Porous asphalt is an asphalt mixture that has a high pore space, therefore it is necessary to use asphalt modification which is expected to increase the stability of porous asphalt, so that porous asphalt is expected to have better performance. Plastic waste can open up opportunities to be used in the field of highway construction because it is easy to obtain and the price is more economical as a porous asphalt mixture. Referring to this, a research was carried out on the durability of porous asphalt mixtures with polyethylene terephthalate (PET) plastic waste as an additive to asphalt. The purpose of this study was to determine the effect of using PET plastic waste on the durability of porous asphalt mixtures. The method used is a laboratory scale experimental method based on 3 types of testing, namely marshall, cantabro loss and asphalt flow down. The gradation in this study used the Australian Asphalt Pavement Association (AAPA) 2004 open graded. The test results showed successively the immersion effect of porous asphalt with the addition of 0%, 5% and 7.5% PET plastic resulted in a decrease in the IDP value (Index Durability First) of 1.25%, 0.89% and 0.83% , and also a decrease in the value of IDK (Second Durability Index) based on the value of loss of strength of 44.12%, 33.31% and 30.52%. This shows that porous asphalt mixed with PET plastic has better durability than without PET.

Karakteristik Arus Lalu Lintas Pada Jalan 2/2 Tidak Terbagi Sari, Yulianti Dewi Manda; Putra, Sasana; Sulistyorini, Rahayu; Herianto, Dwi
Jurnal Rekayasa Sipil dan Desain Vol. 11 No. 1 (2023): Edisi Maret 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v11i1.3064

The conditions of volume, speed, and density are influenced by the interaction of the driver and the vehicle with the road and the environment. One of the way to understand traffic behavior is by describing it in mathematical and graphical form.Through analysis of the relationship between volume, speed, and density can be known information about the current traffic flow conditions. The Greenshield model is used to represent the mathematical relationship between volume, speed, and density. The purpose of the study to analyze the characteristic relationship on 2/2 roads with an undivided type. Based on the results of calculating the mean speed, the service level of this road is type E. The mean speed in the morning is 28.78 km/hour towards Teluk and 25.44 km/hour towards Tanjung Karang. It concluded that the mean speeds of vehicles at this research location are not according to the Regulation of the Minister of the Republic of Indonesia Number 96 of 2015, where for secondary arterial roads with a service level of at least C, namely 60 km/hour.Based on the analysis of the relationship between traffic characteristics using the Greenshield model obtained (r2) = 0,276.

Karakteristik Campuran Aspal Porus Dengan Limbah Plastik Polietilena Tereftalat (PET) Sebagai Bahan Tambah Pada Aspal Arif, Muhammad Isfan; Putra, Sasana; Herianto, Dwi; Sulistyorini, Rahayu
Jurnal Rekayasa Sipil dan Desain Vol. 11 No. 1 (2023): Edisi Maret 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v11i1.3105

Plastic waste, which is one of the biggest environmental pollutants, can open up opportunities to be utilized in the field of highway construction because it is easy to obtain and has a more economical price as a porous asphalt mixture. Referring to this, a research was carried out on the characteristics of a mixture of porous asphalt with polyethylene terephthalate (PET) plastic waste as an additive to asphalt. The purpose of this study was to determine the effect of the use of PET plastic waste on the characteristics of porous asphalt mixtures. The method used is a laboratory scale experimental method based on 3 types of testing, namely marshall, cantabro loss and asphalt flow down. The gradation in this study used the open graded Australian Asphalt Pavement Association (AAPA) 2004. The test results showed that the addition of PET could improve the performance of porous asphalt mixtures. Stability, density, MQ, and VFA values increase with the addition of PET content so that they can prevent fractures due to traffic loads. The decrease in the cantabro loss value makes the mixture's resistance to disintegration better. addition of PET content up to 7.5% can reduce the flow value so that the mixture has optimal flexibility. However, the recommended PET content should be below 5% because in this study the penetration and ductility values did not meet the general specifications for 2018 Highways.

Pemanfaatan Material Pasir Sebagai Bahan Pengganti Fraksi Agregat Halus Untuk Lapis Pondasi Agregat Kelas A Santoso, Muhammad Bagus; Putra, Sasana; Sulistyorini, Rahayu; Herianto, Dwi
Jurnal Rekayasa Sipil dan Desain Vol. 11 No. 1 (2023): Edisi Maret 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v11i1.3106

The base course material uses mountain stone which is broken up with a stone crusher so that it has a high quality which makes it expensive. In this research we need an alternative material to replace fine aggregate that meets the specification requirements. One of the more affordable resources is sand aggregate. The purpose of this study was to determine the density and comparison of the California Bearing Ratio (CBR) value of the base course using sand as a substitute for fine aggregate. The method used in this research is laboratory scale testing to obtain data on aggregate characteristics, optimum moisture content, and CBR values. The base course aggregate mixture used was 55% coarse aggregate and 45% fine aggregate consisting of a mixture of fine crushed stone and 0%, 10%, and 20% sand substitution. The results showed that the KAO value decreased with the addition of sand aggregate. Laboratory CBR values increased with 0% sand substitution having a CBR value of 99.2%, 10% sand substitution having a CBR value of 90.6%, and 20% sand substitution having a CBR value of 84.1%. Only the laboratory CBR value with sand substitution of 20% does not meet the specifications for base A aggregate, namely a minimum value of 90%.

Perlambatan Waktu Perjalanan Akibat Perlintasan Sebidang Kereta Api (Studi Kasus : Jalan Hos Cokroaminoto, Kebon Jahe Tanjung Karang) Prasetyo, Tri Makmur; Putra, Sasana; Ofrial, Siti Anugrah Mulya Putri
Jurnal Rekayasa Sipil dan Desain Vol. 11 No. 1 (2023): Edisi Maret 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v11i1.3123

A level crossing is a form of an intersection where a railway line crosses a highway at the same level. This may result a long queue which is caused by changes in velocity and density of vehicles. Hence, research should be conducted in order to determine changes in vehicle velocity which occurs when the gated crossing is opened on that road section. One of the level crossings between the railway line and the highway can be found on Jalan Hos Cokroaminoto, Kebon Jahe, Tanjung Karang. This study aims to determine changes in traffic velocity that occur on Jalan Hos Cokroaminoto based on the equivalent of light vehicle (EKR) value obtained from the headway ratio method. The results of the observation show that the average velocity of vehicle when crossing the railway line is 3.12 km/hour, while when entering the crossing is 19.48 km/hour so that there is a decrease in velocity in the amount of 16.36 km/hour.Keywords: Shock Wave, Light Vehicle Equivalence (EKR), Rasio Headway Method, Greenberg Method

Karakteristik Campuran Aspal Porus Dengan Menggunakan Material Dari Lampung Suryatama, Noval; Putra, Sasana; herianto, dwi; Sulistyorini, Rahayu
Jurnal Rekayasa Sipil dan Desain 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

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.

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