Sambungan adalah sendi atau nod yang digunakan untuk menyambungkan elemen struktur pada satu titik di mana daya dapat dipindahkan dengan selamat. Keratan tirus dengan bukaan biasanya digunakan dalam projek pembinaan disebabkan berat keluli dapat dikurangkan. Semakin kurang berat keluli, semakin kecil kos pembinaan. Disertasi ini membentangkan sifat-sifat analisis ke atas sambungan rasuk-tiang dengan mengunakan plat hujung memanjang dikimpal dengan rasuk tirus dengan bukaan dan kemudian diperketatkan dengan ke bebibir hadapan tiang UKC. Sambungan ini telah dimodelkan dengan menggunakan perisian LUSAS v14.3. Dimensi bagi model tersebut adalah 460 x 200 x 10 mm ketebalan plat hujung memanjang, 457 x 191 x 82 UKB disediakan dengan bukaan saiz 0.4h dan nisbah tirus 0.3 dan 254 x 254 x 73 UKC. Kemudian, ia dianalisis dengan kaedah unsur terhingga tidak linear untuk menentukan hubungan momen putaran, kecacatan bentuk dan anjakan maksima untuk sambungan tersebut. Sepuluh model unsur terhingga untuk sambungan plat hujung memanjang dengan rasuk tirus telah dianalisis menggunakan LUSAS v14.3. Sepuluh model unsur terhingga telah diubah dari segi jarak antara bukaan pertama dan muka tiang dan jarak antara bukaan. Momen rintangan dan kekukuhan putaran berkurangan dengan kehadiran bukaan. Parameter bukaan mempengaruhi kelakuan sambungan dalam beberapa kaedah. Didapati apabila semakin jauh jarak antara bukaan pertama dan muka tiang, kesan bukaan semakin berkurangan. Didapati juga rasuk tirus dengan bukaan mempunyai nilai momen rintangan lebih rendah daripada rasuk tirus tanpa bukaan sebanyak 4.34% hingga 9.70%. Ini menunjukkan rasuk tirus dengan bukaan mempunyai kekuatan lebih rendah daripada rasuk tirus tanpa bukaan.
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Connections are joints or nodes which are used to joint elements of a structure at a point such that forces can be transferred between them safely. Tapered steel section with perforation is normally used in construction project due to their reduced in weight. This is because the lighter the weight of the steel, the smaller the cost of the construction. This dissertation presents analysis result on beam to column connection by using extended end plate welded with tapered beam steel section with perforation and then bolted to UKC front flange of column. This connection was modelled by using LUSAS v14.3 software. The dimension of the models sizes are 460 x 200 x 10 mm thickness of endplate, 457 x 191 x 82 UKB provided with 0.4h opening size and tapered ratio 0.3 and 254 x 254 x 73 UKC. Then, it was analysed by using nonlinear finite element analysis in order to determine the moment rotation curve, deformed shape and maximum displacement of the connection. Ten Finite Element models of extended end plate connection for tapered steel beam were analysed using LUSAS v14.3. The FE models were varied in terms of the distance from first opening to column‟s face and spacing between openings. The moment resistance and rotational stiffness decrease with the presence of opening. The parameters of the openings affect the connection behaviour in a number of ways. It was found that when the distance between first opening and column face become longer, the effect of openings are eliminated. It was also found that tapered steel beam section with perforation has less moment resistance value than tapered steel beam section without perforation as much as 4.34% to 9.70%. This shows that tapered steel beam section with perforation has less strength than tapered steel beam section without perforation.
Behaviour of the beam to column connection for tapered steel section with perforation / Mohamad Mahzuz Shaharudin