ANALISA DAKTILITAS KOLOM AKIBAT PENGEKANGAN METODE MANDER
Ductility Analysis of Column by Confined Concrete Mander Method
Published:
2017-09-23Issue:
Vol. 3 No. 2 (2016): SPEKTRUM SIPILKeywords:
Kolom, Daktilitas, Pengekangan, XtractArticles
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Abstract
Daktilitas merupakan suatu parameter yang dapat dipakai untuk mengukur kinerja suatu elemen maupun struktur dalam hal ketahanannya terhadap beban yang terus menerus dikenakan sampai fase inelastis
Daktilitas kurvatur kolom dalam studi ini akan dihitung menggunakan bantuan program XTRACT. Adapun efek pengekangan pada kolom ikut diperhitungkan dalam perhitungan daktilitas ini, yaitu bagian inti betonnya didefinisikan sebagai confined concrete (beton terkekang) yang memakai perumusan Mander, Priestley, dan Park (1988). Karena jarak sengkang sesuai SNI - 03 – 2847 – 2002 ps. 23.4.4.2 sangat berdekatan maka dilakukan analisa dengan jarak yang lebih besar
Kolom A 150 x150 tulangan memanjang 4 Φ 16 dengan jarak sengkang 90 mm, menunjukan daktilitas 16,36>16,kolom B 200 x 200 tulanangan memanjang 8 Φ 16 dengan jarak sengkang 90 mm, menunjukan daktilitas 19,36 >16. Dengan pengekangan meningkatkan kekuatan beton kolom A dari 20 MPa menjadi 24,36MPa, sedang kolom B dari 20 MPa menjadi 24,9021 MPa.
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