GDL

Design Of Structural Reinforcement of Campus Building with Fiber Reinforced Polymer (FRP) Due to Additional Floor

Skripsi, 014 / 2021 / TPPG
Undergraduate Theses from JBPTPPOLBAN / 2022-09-23 13:54:48
Oleh : Mega Slamet - 171144019 (megaslamet35@gmail.com)
Dibuat : 2022-09-23, dengan 4 file

Keyword : balok, kolom, FRP
Subjek : beam, column, FRP

Sebuah bangunan gedung perkuliahan yang berada di daerah Jawa Barat akan dilakukan peningkatan kapasitas ruang belajarnya dengan penambahan dua lantai baru, sehingga bangunan yang sebelumnya terdiri dari empat lantai akan ditingkatkan menjadi enam lantai. Peningkatan kapasitas ruang belajar pada bangunan gedung kuliah ini didasari oleh semakin meningkatnya jumlah mahasiswa baru dalam setiap tahunnya. Namun akibat dari penambahan dua lantai baru pada bangunan ini, akan mengakibatkan penambahan beban yang akan diterima oleh elemen-elemen struktur pada empat lantai eksisting. Selain itu, berdasarkan hasil investigasi terhadap mutu beton eksisting, diperoleh bahwa mutu beton eksisting tidak mencapai mutu beton rencana yaitu sekitar 35% lebih rendah dari kekuatan mutu beton rencana. Berdasarkan kondisi tersebut dimungkinkan elemen-elemen struktur atas eksisting akan mengalami over capacities, sehingga perlu dilakukan perkuatan elemen-elemen struktur atas eksisting terhadap elemenelemen struktur balok dan kolom, dimana metode perkuatan yang akan digunakan pada studi ini adalah dengan metode perkuatan Fiber Reinforced Polymer. Gaya-gaya dalam yang membebani elemen-elemen struktur atas eksisting akibat penambahan dua lantai baru dan penurunan mutu beton diperoleh berdasarkan hasil pemodelan struktur dengan bantuan perangkat lunak ETABS versi 2016, dimana pembebanan bangunan direncanakan berdasarkan SNI 1726:2019 tentang tata cara perencanaan ketahanan gempa untuk struktur bangunan gedung dan nongedung, SNI 1727:2020 tentang beban desain minimum dan kriteria terkait untuk bangunan gedung dan struktur lain serta Pedoman Peraturan Pembebanan Untuk Rumah dan Gedung (PPPURG 1989). Adapun analisis kapasitas elemen-elemen struktur eksisting dievaluasi berdasarkan ketentuan sistem rangka pemikul momen khusus (SRPMK) sesuai SNI 2847:2019 tentang persyaratan beton struktural untuk bangunan gedung. Berdasarkan hasil evaluasi kapasitas elemen-elemen struktur atas eksisting pada lantai 1-4, dihasilkan bahwa terdapat elemen-elemen struktur balok dan kolom yang mengalami over capacities. Perancangan perkuatan elemen-elemen struktur balok dan kolom yang mengalami over capacities dengan metode perkuatan FRP dilakukan berdasarkan ketentuan ACI 440.2R-08 tentang Guide for the Design and Construction of Externally Bonded FRP System for Strengthening Concrete Structure. Berdasarkan hasil perancangan perkuatan FRP terhadap elemen-elemen struktur kolom eksisting, dihasilkan peningkatan kapasitas kolom sebesar 47,681%-251,242% terhadap kapasitas aksialnya dan peningkatan sebesar 1,722%-90,730% terhadap kapasitas lentur dengan menggunakan 1-5 lapis FRP ketebalan 1,2 mm. Adapun hasil perancangan perkuatan FRP terhadap elemen-elemen struktur balok eksisting, dihasilkan peningkatan kapasitas balok sebesar 11,728%-129,060% terhadap kapasitas lentur tumpuan; 10,505%-125,680% terhadap kapasitas lentur lapangan; 60,115%-227,046% terhadap kapasitas geser tumpuan; dan 51,742%-132,506% terhadap kapasitas geser lapangan dengan menggunakan 1-5 lapis FRP ketebalan 1,2 mm. Kata kunci: balok, kolom, FRP.

Deskripsi Alternatif :

A lecture building located in West Java will have its study room capacity increased by adding two new floors, so that the building which previously consisted of four floors will be increased to six floors. The increase in the capacity of the study room in this lecture building is based on the increasing number of new students every year. However, as a result of the addition of two new floors to this building, it will result in additional loads that will be received by structural elements on the existing four floors. In addition, based on the results of an investigation into the quality of the existing concrete, it was found that the quality of the existing concrete did not reach the design concrete quality, which is about 35% lower than the design concrete strength. Based on these conditions, it is possible that the existing superstructure elements will experience over capacities, so it is necessary to strengthen the existing superstructure elements against beam and column structural elements, where the method of strengthening that will be used in this study is Fiber Reinforced Polymer method. The internal forces that burden the elements of the existing superstructure due to the addition of two new floors and a decrease in the quality of the concrete are obtained based on the results of structural modeling with the help of the 2016 ETABS software, where the loading of the building is planned based on SNI 1726:2019 regarding procedures for planning earthquake resistance for building and non-building structures, SNI 1727:2020 regarding minimum design loads and related criteria for buildings and other structures as well as Guidelines for Loading Regulations for Houses and Buildings (PPPURG 1989). The analysis of the capacity of the existing structural elements is evaluated based on the provisions of the special moment resisting frame system (SRPMK) in SNI 2847:2019 regarding structural concrete requirements for buildings. Based on the results of the evaluation of the capacity of the existing superstructure elements on floors 1-4, it was found that there were beam and column structural elements that experienced over capacities. The design of the reinforcement of beam and column structural elements experiencing over capacities with the FRP strengthening method is carried out in accordance with the provisions of ACI 440.2R-08 concerning the Guide for the Design and Construction of Externally Bonded FRP System for Strengthening Concrete Structure. Based on the results of the design of FRP reinforcement for the existing column structure elements, an increase in column capacity of 47,681%-251,242% of the axial capacity and an increase of 1,722%-90,730% of the flexural capacity using 1-5 layers of FRP 1,2 mm thickness was obtained. The results of the design of FRP reinforcement for the existing beam structural elements, resulted in an increase in the capacity of the beam by 11,728%-129,060% of the flexural capacity of the support; 10,505%-125,680% of the field bending capacity; 60,115%-227,046% of the bearing shear capacity; and 51,742%-132,506% of the shear capacity of the field using 1-5 layers of 1,2 mm thick FRP. Keywords: beam, column, FRP.

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Organisasi
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