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Standar perencanaan struktur baja untuk jembatan

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  • RSNI T-03-2005

    Standar Nasional Indonesia

    Perencanaan stuktur baja untuk jembatan

    Badan Standardisasi Nasional

    SNB ICS

  • RSNI T-03-2005

    i

    Daftar isi

    Daftar isi ................................................................................................................... i-x Daftar gambar .......................................................................................................... xi Daftar tabel .............................................................................................................. xii Daftar notasi ............................................................................................................ xiii-xxii Prakata .......................................................................................................................... xxiii 1 Ruang lingkup ......................................................................................................... 1 2 Acuan normatif .................................................................................................... 1 3 Istilah dan definisi ................................................................................................. 1

    3.1 Aksi ............................................................................................................... 2 3.2 Fatik .............................................................................................................. 2 3.3 Gelagar hibrid ............................................................................................... 2 3.4 Jembatan penting .......................................................................................... 2 3.5 Jembatan lainnya .......................................................................................... 2 3.6 Kategori detil ................................................................................................. 2 3.7 Kejadian pembebanan nominal .................................................................... 2 3.8 Kekuatan nominal ......................................................................................... 3 3.9 Kekuatan rencana ......................................................................................... 3 3.10 Kekuatan tarik ............................................................................................... 3 3.11 Kurva S-N ..................................................................................................... 3 3.12 Las tumpul penetrasi penuh ............................................................................ 3 3.13 Las tumpul penetrasi sebagian ........................................................................ 3 3.14 Las tersusun .................................................................................................... 3 3.15 Panjang .......................................................................................................... 3 3.16 PBKT ............................................................................................................ 4 3.17 PBL ............................................................................................................... 4 3.18 Pen ................................................................................................................ 4 3.19 Penampang kompak ..................................................................................... 4 3.20 Penampang tidak kompak ............................................................................. 4 3.21 Pengaruh aksi atau beban ............................................................................ 4 3.22 Pengaruh aksi atau beban rencana .............................................................. 4 3.23 Persiapan las yang baku .............................................................................. 4 3.24 Siklus tegangan .......................................................................................... 5 3.25 Tegangan berulang (siklus) ........................................................................ 5 3.26 Tegangan leleh ........................................................................................... 5 3.27 Umur rencana ............................................................................................. 5

    4 Persyaratan umum perencanaan struktur baja .................................................... 5 4.1 Umur rencana jembatan ............................................................................... 5 4.2 Satuan yang digunakan ................................................................................ 5 4.3 Prinsip umum perencanaan .......................................................................... 5

    4.3.1 Dasar umum perencanaan .................................................................... 5 4.3.2 Asumsi dan anggapan perencanaan .................................................... 6 4.3.3 Perencanaan berdasarkan beban dan kekuatan terfaktor (PBKT) ........ 6 4.3.4 Perencanaan berdasarkan batas layan (PBL) ....................................... 7 4.3.5 Metode perencanaan khusus .................................................................. 7 4.3.6 Metode analisis ...................................................................................... 7

    4.4 Sifat dan karakteritik material baja ................................................................ 8 4.4.1 Sifat mekanis baja ................................................................................ 8

  • RSNI T-03-2005

    ii

    4.4.2 Baja struktural ...................................................................................... 8 4.4.2.1 Syarat penerimaan baja ................................................................ 8

    4.4.2.2 Baja yang tidak teridentifikasi ........................................................ 8 4.4.2.3 Kurva tegangan-regangan ............................................................. 8

    4.4.3 Alat sambung ....................................................................................... 9 4.4.3.1 Baut, mur dan ring .......................................................................... 9 4.4.3.2 Alat sambung mutu tinggi ............................................................... 9

    4.4.4 Las ....................................................................................................... 9 4.4.4.1 Penghubung geser jenis paku yang dilas ...................................... 9 4.4.4.2 Baut angkur .................................................................................. 9

    4.5 Faktor beban dan kekuatan ......................................................................... 9 4.5.1 Faktor beban dan kombinasi pembebanan ......................................... 9 4.5.2 Faktor reduksi kekuatan ....................................................................... 10 4.5.3 Kekuatan rencana penampang struktur baja ....................................... 10

    4.6 Korosi pada struktur baja ............................................................................ 10 4.7 Persyaratan dan pembatasan lendutan pada balok ................................... 10

    4.7.1 Beban ................................................................................................... 10 4.7.2 Balok .................................................................................................... 10 4.7.3 Kantilever ............................................................................................. 10 4.7.4 Kerjasama antara gelagar ..................................................................... 11 4.7.5 Momen inersia penampang .................................................................. 11 4.7.6 Rangka batang ..................................................................................... 11 4.7.7 Penyimpangan ..................................................................................... 11

    4.8 Ketahanan api ............................................................................................. 11 5 Perencanaan komponen struktur tarik ................................................................. 12

    5.1 Persyaratan kuat tarik dan kuat tarik rencana .............................................. 12 5.2 Penampang efektif ....................................................................................... 13

    5.2.1 Kasus gaya tarik hanya disalurkan oleh baut ........................................ 13 5.2.2 Kasus gaya tarik disalurkan oleh las memanjang ................................. 14 5.2.3 Kasus gaya tarik disalurkan oleh las melintang .................................... 14 5.2.4 Kasus gaya tarik disalurkan oleh las sepanjang dua sisi ...................... 14

    5.3 Komponen struktur tersusun dari dua buah profil atau lebih ....................... 14 5.3.1 Umum .................................................................................................... 14 5.3.2 Beban rencana untuk sambungan ......................................................... 15 5.3.3 Komponen struktur tarik tersusun dari dua buah profil yang saling

    membelakangi .........................................................................