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Studi Alternatif Loss of Prestress PC I Girder Akibat Metode Single Stressing dan Double Stressing Pada Section Overpass STA 52+174 Proyek Jalan Tol Balikpapan-Samarinda Sujiati Jepriani; Willy Susanto; Joko Suryono
Jurnal Teknik Sipil Vol 29 No 2 (2022): Jurnal Teknik Sipil
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2022.29.2.4

Abstract

Abstrak Salah satu pekerjaan penting yang dilakukan pada beton prategang yaitu proses pemberian tegangan (stressing). Pemberian tegangan pada beton prategang mengakibatkan kehilangan gaya prategang yang harus dipertimbangkan pada perencanaan. Metode stressing pada beton pascatarik dapat dilakukan dengan metode satu arah (single stressing) dan metode dua arah (double stressing). Tujuan penelitian ini adalah untuk mengetahui nilai kehilangan gaya prategang pada girder jembatan akibat stressing dengan metode satu arah dan metode dua arah serta mengetahui pengaruh panjang bentang girder terhadap kehilangan gaya prategang. Analisis yang dilakukan meliputi menghitung pembebanan dan gaya prategang, menghitung kehilangan prategang akibat metode stressing satu arah dan dua arah, serta kontrol tegangan dan lendutan pada girder. Jenis girder yang digunakan pada penelitian ini adalah PC I girder dengan bentang 25,80 m dan 16,80 m. Dari hasil analisis diperoleh bahwa metode penarikan satu arah menghasilkan kehilangan gaya prategang lebih besar dibandingkan dengan metode penarikan dua arah. Kehilangan gaya prategang akibat penarikan satu arah pada PC I girder bentang 25,80 m adalah sebesar 25,03 % dan sebesar 27,18% pada PC I girder bentang 16,80 m. Kehilangan gaya prategang akibat penarikan dua arah pada PC I girder bentang 25,80 m adalah sebesar 17,22 % dan sebesar 24,12% pada PC I girder bentang 16,80 m. Kehilangan gaya prategang pada PC I girder bentang 25,80 m nilainya lebih kecil dibandingkan kehilangan gaya prategang pada PC I girder bentang 16,80 m. Kata-kata Kunci: Beton prategang, kehilangan gaya prategang, metode stressing, penarikan dua arah, penarikan satu arah. Abstract One of the important work carried out on prestressed concrete is the stressing process. The application of stress to prestressed concrete results in a loss of prestressing force which must be considered in the design. Theoretically, the stressing method of post-tensioned concrete can be carried out using a single stressing method and a double stressing method. The purpose of this study was to determine the value of the loss of prestressing force on the bridge girder due to stressing with the one-way method and the two-way method and to determine the effect of the length of the girder span on the loss of the prestressing force. The analysis carried out includes calculating the load and prestressing force, calculating the prestress loss due to one-way and two-way stressing methods, and controlling stress and deflection on the girder. The type of girder used in this study is a PC I girder with a span of 25,80 m and 16,80 m. From the results of the analysis, it was found that the one-way pulling method resulted in a greater loss of prestressing force than the two-way pulling method. Loss of prestressing force due to one-way tension on a PC I girder span of 25,80 m is 25,03% and 27,18% in a PC I girder span of 16,80 m. Loss of prestressing force due to two-way tension on a PC I girder span of 25,80 m is 17,22% and 24,12% at a PC I girder span of 16,80 m. The loss of prestressing force on the PC I girder span of 25,80 m is smaller than the loss of prestressing force on the PC I girder span of 16,80 m. Keywords: Bouble stressing, loss of prestressing force, prestressed concrete, single stressing, stressing method
KAJIAN REDESAIN KAWASAN GOR SEGIRI SAMARINDA PENDEKATAN PADA LANDMARK KOTA Hatta Musthafa Adham Putra; Tumingan Tumingan; Joko Suryono
Jurnal Riset Inossa Vol. 4 No. 1 (2022): Juni
Publisher : Badan Penelitian dan Pengembangan Daerah Kota Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54902/jri.v4i1.61

Abstract

The Segiri Sports Arena is an area that provides sports facilities for the people of Samarinda City and its surroundings. Various sports facilities are available, but as the city of Samarinda develops, the area has turned into a multifunctional area due to the activities carried out by the community. This transformation has caused the Segiri GOR area to look slum. In order to restore the main function and accommodate all these multifunctional activities with a better arrangement, as well as efforts to make a redesign that can become a landmark of the City of Samarinda, research is needed on the study of the redesign of the Segiri Samarinda GOR area with an approach to city landmarks. The parameters used are the landmarks and the characteristics of the sport building. This research would be useful for the government to improve and accommodate various functions of community needs for sports areas, and present new city landmarks for Samarinda City. This Samarinda City landmark brings elements of the distinctive character of the City of Samarinda in the form of the building.