KARAKTERISTIK DINAMIK PELAT LANTAI SEMI PRECAST DENGAN PERKUATAN SHEAR CONNECTOR
DOI:
https://doi.org/10.26623/teknika.v9i2.476Abstract
Abstrak: Pelat lantai bertingkat sederhana biasanya dikerjakan dengan sistem monolit yang memerlukan bekisting dan juga perancah. Salah satu cara yang diperkenalkan kepada masyarakat adalah menggunakan sistem semi pracetak. Dalam sistem ini struktur dibagi menjadi panel-panel kecil agar memungkinkan untuk dikerjakan tanpa bantuan alat berat.
Penelitian dilakukan pengujian dinamik menggunakan mesin penggetar yang diletakkan di tengah bentang. Pengujian dilakukan terhadap 4 buah benda uji berupa panel pelat lantai, yang terdiri dari 2 buah pelat monolit dan 2 buah pelat komposit, dengan ukuran panjang 3000 mm, dan tinggi yang sama yaitu 120 mm serta dengan lebar masing-masing 200 mm dan 400 mm.
Hasil pengujian menunjukkan bahwa frekuensi alami sistem struktur baik pelat monolit maupun pelat komposit yang yang rusak mempunyai frekuensi alami yang lebih kecil. Hasil eksperimen mode displacement menunjukkan hasil bahwa pelat yang ada kerusakan mempunyai displacement lebih besar.
Kata Kunci : panel semi pracetak, shear connector, beban dinamik, frekuensi alami
Abstract: A building floor is usually made of with a simple monolith system which needs concrete formwork. One alternative that is introduced to the public is using the semi-precast system. In this system structure is divided into smaller panels to make it possible to do without heavy equipment.
In this study the dynamic testing using a vibrator machine that is put in the mid-span. This test consists of 4 pieces of the specimen plate panel, which consists of 2 monolith plates and 2 composite plate (semi precast), with a length of 3000 mm, and the same height is 120 mm and a width of each 200 mm and 400 mm.
The results showed that the natural frequency of the system structure damaged had a smaller natural frequency. The displacement mode experimental results showed that plate damage had a larger displacement.
Keywords: semi-precast panels, shear connectors, dynamic loads, natural frequency
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