Wei T. Hsu1, Dung M. Lue This email address is being protected from spambots. You need JavaScript enabled to view it.1 and Bor T. Hsiao1 1Department of Civil Engineering, National Chung-Hsing University, Taichung, Taiwan 402, R.O.C.
Received:
July 3, 2008
Accepted:
March 5, 2009
Publication Date:
December 1, 2009
Download Citation:
||https://doi.org/10.6180/jase.2009.12.4.02
It is a common practice in a crane runway girder to place a channel, open-side down, over the top flange of a W-shape. The crane runway girder with section mentioned above called as WC (W-shape with Channel Cap) or SC (S-shape with Channel Cap) girder by authors is an efficient and economical one. The warping constants (Cw) of the WC/SC girders are not provided in the AISC design manuals because the Cw calculation for a WC/SC section is not a routine process but a tedious task. This study summarizes the theoretical Cw formulas which are expressed in terms of mathematical integration. The integration formulas can be written in terms of numerical expressions by considering the fact that the section is made up of thin-walled plate elements. Since the Cw which in terms of numerical expressions is too complicated to be completed by hand-held calculators, the Cw is set to be calculated by computer. The accuracy of computer-assisted results is compared with the Australian built-up sections of crane runway girder and the results are quite compatible. The calculated values of Cw will make engineers to better evaluate the elastic critical moment (Mcr) of the girders with WC/SC sections.ABSTRACT
Keywords:
Runway Girder, Warping Constants, WC/SC Girder
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