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Journal : Rekayasa Sipil

Pengaruh Gempa Terhadap Perilaku Jembatan Cable Stayed Tengku Fisabililah Riau Dengan Time History Analysis Natalia Vin Kristin; Ari Wibowo; Desy Setyowulan; Edhi Wahyuni S.
Rekayasa Sipil Vol 12, No 2 (2018)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2018.012.02.10

Abstract

Tengku Fisabilillah Riau Bridge is one type of a cable stayed bridge that located in Indonesia. Indonesia is among one of the countries that are prone to earthquakes. Effects of earthquake can change the structure of the bridge. These effects can be analyzed using time history analysis.The first step begins with the modeling of bridge structures. But the dimensions and material specifications of the bridge’s structure has been determined by researcher. After modeling the structure of the bridge is completed, input the data of the time history. This data is taken from the earthquake of Hyogo-Ken Nanbu in Japan. Next, the changes of the structure of the bridge caused by the earthquake such as mode shapes, displacement, and stress that occur will be analyzed. Results of the analysis showed that there were many mode shapes generated, the largest mode shapes is on the Y-axis at the direction of the bridge. For displacement, the maximum displacement occurs direction in Z-axis. The deflection that caused by the earthquake is largest than the allowable maximum deflection of the bridge. While, the maximum stress occurs on the cable. The force which is caused by the earthquake is largest than the allowable maximum force owned section.
PENGARUH PERKUATAN MORTAR JAKET DENGAN VARIASI KONFIGURASI TULANGAN LONGITUDINAL BAMBU PADA KOLOM BETON BERTULANG Nurmadinah Jasman; Christin Remayanti Nainggolan; Indradi Wijatmiko; Ari Wibowo
Rekayasa Sipil Vol 13, No 1 (2019)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2019.013.01.6

Abstract

Kolom merupakan salah satu struktur utama dari suatu bangunan. Kolom menjadi salah satu struktur dalam portal/frame yang menopang balok, seluruh beban lantai, serta beban lain yang diatasnya. Seiring perkembangan konstruksi kebutuhan akan peralihan fungsi bangunan sedang banyak dilakukan. Untuk menghindari terjadinya kolom lemah pada peralihan fungsi bangunan, diciptakan sebuah inovasi yaitu perbaikan dengan mortar jacketing. Pada penelitian ini digunakan kode kolom A5 – B5 dan A6 – B6. Yaitu, kolom retrofit kode A5 adalah kolom retrofit yang menggunakan tulangan longitudinal bambu sebanyak 4 buah dengan ukuran 10 x 10 mm dibandingkan dengan kolom retrofit kode B5 adalah kolom retrofit yang menggunakan tulangan longitudinal bambu sebanyak 8 buah dengan ukuran 10 x 5 mm dan dengan jarak tulangan transversal yang sama yaitu 7 cm. Sedangkan kolom retrofit dengan kode A6 adalah kolom retrofit yang menggunakan tulangan longitudinal bambu sebanyak 4 buah dengan ukuran 10 x 10 mm, dibandingkan dengan kolom retrofit kode B6 adalah kolom retrofit yang menggunakan tulangan longitudinal bambu sebanyak 8 buah dengan ukuran 10 x 5 mm dan dengan jarak tulangan transversal yang sama yaitu 11 cm. Hasil akhir dari penelitian ini adalah efektifitas pengekangan kolom retrofit. Pengujian kolom dilakukan menggunakan mesin uji tekan untuk memperoleh nilai gaya tekan dan dial gauge untuk memperoleh nilai defleksi. Hasil penelitian antara variasi A5 dan B5 diperoleh bahwa variasi B5 memiliki efektifitas peningkatan gaya tekan maksimum yang lebih rendah sebesar 26,27% dibandingkan variasi A5. Hal ini karena rasio tekuk yang dimiliki kolom B5 lebih kecil dibandingkan kolom A5, sehingga tulangan longitudinal variasi A5 lebih efektif dalam menahan gaya tekan aksial. Selain itu nilai kekakuan dan modulus elastisitas dari kolom retrofit B5 juga memiliki nilai yang lebih kecil masing-masing  sebesar 61,17% dan 49,79% dibandingkan kolom retrofit A5. Namun untuk nilai peningkatan daktilitas variasi B5 memiliki nilai peningkatan daktilitas yang sedikit lebih besar sebesar 0,33% dibandingkan kolom retrofit A5. Maka disimpulkan bahwa kolom retrofit B5 lebih efektif dibandingkan kolom retrofit A5. Sedangkan untuk penelitian antara variasi A6 dan B6 diperoleh bahwa variasi B6 memiliki peningkatan gaya tekan maksimum yang lebih rendah sebesar 19,02% dibandingkan variasi A6. Namun variasi B6 memiliki nilai kekakuan dan modulus elastisitas yang lebih besar masing-masing  sebesar 1,82% dan 45,43% dibandingkan kolom A6, hal ini dapat saja terjadi karena proses pencampuran material saat pengecoran tidak merata, sehingga kuat tekan dan kekakuan serta modulus elastisitas tidak berbanding lurus. Sedangkan variasi B6 memiliki efektifitas peningkatan daktilitas lebih besar sebesar 62,33% dibandingkan variasi A6. Maka disimpulkan bahwa kolom retrofit B6 lebih efektif dibandingkan kolom retrofit A6. Oleh karena itu, pada penelitian ini konfigurasi tulangan memberikan pengaruh pada efektifitas perbaikan kolom.
PENGARUH PERKUATAN MORTAR JAKET DENGAN VARIASI JARAK SENGKANG BAMBU PADA KOLOM BETON BERTULANG Muhammad Ainur Rofiq; Christin Remayanti Nainggolan; Ari Wibowo; Indradi Wijatmiko
Rekayasa Sipil Vol 13, No 1 (2019)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2019.013.01.7

Abstract

A building consists of several structural elements, one of them is a column that has the function to distribute the entire load of the building towards the foundation. If in the working process is done poorly, the column structure will fail. In addition, the structure of the building that has been established is sometimes not function appropriately based on the initial plan, so the load that works on the structure of the building can exceed limits that are previously calculated. Then, the reinforcement of the column is required to be functioned according to the previous planning. In this case, we use the retrofit column code A.5 and B.5 is a retrofit column that uses 4 pieces and 8 pieces of bamboo longitudinal with a size of 10 x 10 mm and 10 x 5 mm with a distance between 7 cm transversal reinforcement, compared to a retrofit column code A.6 and B.6 is a retrofit column that uses longitudinal reinforcement of bamboo as many as 4 pieces and 8 pieces with a size of 10 x 10 mm and 10 x 5 mm with a distance between transversal reinforcement 11 cm. The column was tested by using a compression test machine to obtain the value of the compressive force and dial gauge to obtain the deflection value. Testing of compressive strength was not carried out in the initial column, but only in the retrofit column. The results of the study between variations of A5 and A6 showed that variations in A5 had an increase in the maximum compressive force of 61.78% while variations in A6 increased by 59.86%, it is concluded that A5 was more effective than A6. Whereas for the research between variations of B5 and B6 it was found that variations in B5 had an increased maximum in compressive force of 48,51 %, it is concluded that B5 was more effective than B6.  
MODELING OF SLUMP VALUE AND DETERMINATION OF INFLUENTIAL VARIABLES WITH REGRESSION APPROACH Eri Cahyani; Ari Wibowo; Indradi Wijatmiko
Rekayasa Sipil Vol 13, No 3 (2019)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2019.013.03.2

Abstract

There are many factors underlying the instability of the consistency of the concrete mixture. The consistency of the concrete mixture was measured using a slump test. Slump tests are commonly used in measuring the quality of fresh concrete. The instability of the slump value becomes an unsolved problem. To facilitate predicting slump values, modeling is needed to reduce variations in concrete job mixs. Regression has been known as the basic method of predictive modeling. Collected data is divided according to the ratio of sand to: <38%, 38-44% and> 44%. The sand ratio data <38% is the most suitable model, because it has a value of R2 0.957, adj. R2 0.897 and MSE 0.31. The most influential variable is water, retarder, gravel 20-30mm. The resulting modeling is adjusted to the range of data collected. 
Co-Authors Abi Nisaka Abner Onesimus Sijabat Abulija Maskarai Acep Muhammad Rizki Achfas Zacoeb Achmad Nafis Achmad Wicaksono Achmad Zaim Ismail Ade Okta Viani Adelia Fatin Faadihilah Adhe Aryswan Adi Sanjaya Putra Agriva Amelia S Agus Riehwanto Aidatu Fauziah Aina Ul Mardiyah Ray Ajat Sudrajat Akhmat Rizkuna Aldini Rizky Santoso Ali Usman Amanda Kurnia Rahmadini Amelia Kusuma Ananta Widagdo Adipranowo Angela Angela Anhar Faisal Fanani Aninda Afifah Nur Azizah Aninda Budi Pawestri Anindyasari, Dinar Anis Rahmi Anjaningrum, Widiya Dewi Anna Zalfah Nurullail Annisa Fyona Anton Setiawan Honggowibowo Ardha Marcelita Ragil Putranti Ari Ajibekti Masriwilaga Arif Roziqin Arif Wahyu Budiarto Arumsari Arya Surendra Aryanto, Sani Asrafi Asrafi Astria, Winda Bambang Hendrawan Budiharti Budiharti Bunga Aulianesia Cahyo Budi Nugroho Chintya Aulia Khoirunisa Christian Remayanti Nainggolan Christin Remayanti Christin Remayanti Nainggolan Cicilia Puji Rahayu Cicilia Puji Rahayu Cori Qamara Dahlan Susilo Dede Aprylasari Desy Setyowulan Dian Susanto Domi Kamsyah Dwi Kartikasari Dwi Rosalina Dwiki Novri Ditya Edhi Wahyuni S. Eko Perianto Emel Lia Utari Eri Cahyani Eva Arifi Fajar Dwi Nuryanto Fajrih, Nurul Fandini Meilia Anjani Fandini Melia Anjani Faselsakti Ifolala Johanes Laia Fauzi, Naufal Rafizakwan Fauzun Atabiq Febri Ardiyanto Fedia Restu Firdhaus Hari Saputro Al Haris Flora Suryani Frandika Antonius Saputra Fransiska Pindan Sao Gading Cempaka Ganesha Aryadi Hanifah Widiastuti Henry Aditia Rigianti Heri Rustamaji I Gusti Ayu K. R. H I Putu Gede Didik Widiarta Ihsan Saputra Imas Ayu Salamah indah lestari vidyahayati Indradi Wijatmiko Irfawandi Samad Irwanto Zarma Putra Is Susanto James Siregar Jehezkiel Dyero Karenina Dwi Yulianti Kartika Kartika Kartika Sari Kelvin Ariesryo Kim Budiwinarto Kolose Albert Hutapea Lalu Mulyadi Ludfi Djakfar Luthfiya Ratna Sari M. Abdul Kholiq M. Taufik Hidayat Mahrus Ali Makin Makin Malik Fajar Alamsyah Maranatha Lasandy Winangun Marilyn Lasarus Marley Kristianto Marturia Surya Yuliyanti Meida Perwira Antartika Metta Santiputri Michael Hagana Bangun Mimi Salminah Mir’atul Khusna Mufida Mohamad Dwi Junianto Monica Sintawati Muh Haris Muh. Ichsan Haris Muhamad Rian Sances Muhammad Ainur Rofiq Muhammad Andi Nova Muhammad Hasby Muhammad Iqbal Fasa Muhammad Ismail Muhammad Kurniawan Dwi Septyan Muhammad Nurhidayat Muhammad Ridho Ramadhan Muhammad Syafei Gozali Muhammad Zainuddin Lubis Najli Sembada S Natalia Vin Kristin Naufal A Prasetyo Neta, Fandy Novebriantika Novemia Fatmarischa Novrilia Atika Nabila Nugroho Pratomo Ariyanto Nur Cahyono Kushardianto Nur Innayatun Nur Saifiyati Buldani Nur Vera Nur Zahrati Janah Nurliani Erni Nurmadinah Jasman Nurman Pamungkas Nurmin Arianto Nursalim Nursalim Nurul Fajrih H Nurul Laili Arifin Nurul Syafa Nurwijayanti Oktavianto Gustin Panisa Marliana Prasetyo, Stefanus Eko Puguh Ardianto Iskandar Puthut Alfian Akbar Raden Arie Febrianto Rahmad Hari Purnomo Rahman Hakim Raja Muhammad Isnu Prayoga Randy Saputra Retno Anggraini Retno Anggraini Retno Anggraini , Ari Wibowo Rimawati, Elistya Rinaldi, Ferdian Rivki Ryan Nugraha Rizki Claudia Wardani H Rizki Widi Pratama Rizky Pratama Hudhajanto Robby Robby Rokhayati, Yeni Ryan Fani Saifoe El Unas Saiful Akhyar Lubis Salsabila Tasya Saly Kurnia Octaviani Sandi Anggara Sastya Hendri Wibowo Satriya Bayu Aji Selly Rahmawati Shinta Purwaningsih Siahaan, Johannes Hasiholan Simanjuntak, Servis Sinarti, Sinarti Sinurat, Fransisco Yohanes Siti Maghfiroh Siti Nurjanah Siti Nurlina Sri Winarni Sudibyo, Doni Sudra Irawan Sugeng Prayitno Sugeng Prayitno Budio Suhardi Suhardi Suhardi Supriyana Nugraha Supriyana Nugroho SURYATI GALUH PRAVITASARI Syilvi Marsela diastami Taufik Agung Pranowo Taufik Langgeng Ardiansyah Ully Tri Ellen Mahulae Umroh Umroh Uuf Brajawidagda V. Rizke Ciptaningtyas Viqi Velian Suhartawan Wa Riani Hatam Wawan Laksito Yuly Saptomo Wenang Anurogo Wissesa Wowo Rossbandrio Yanti Wattimury Yayan Sudaryana Yogantara Yogantara Yohanes Darmawan Lintong Yuka, Lambang Katresnan Yuli Astuti Yumna Kusuma Shafira