拋物線為(上拋)或(下拋)的問題 - 土木
By Hedda
at 2011-08-22T14:24
at 2011-08-22T14:24
Table of Contents
http://farm3.static.flickr.com/2761/5862696613_ea59a289e4.jpg
以上圖解適用於【簡支梁】、【懸臂梁】受力為 (垂直力) 或 (均佈載重) 的情形，
當剪力圖為【負斜】，二次拋物線為【下拋】，
當剪力圖為【正斜】，二次拋物線為【上拋】。
【特殊情形】
當(剪支梁)與(懸臂梁)受到【均變載重】時，圖形則【相反】畫法。
當(剪支梁)與(懸臂梁)受到【均變載重】時，
載重為【負斜】，剪力圖為【上拋】二次拋物線，
彎矩圖三次拋物線一律為【下拋】圖形，
載重為【正斜】，剪力圖為【下拋】二次拋物線，
彎矩圖三次拋物線一律為【下拋】圖形。
以上觀念為小弟所整理出來的資料，若有錯誤請版上前輩們指證，謝謝！
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歲寒松柏古栽培，雨雪風霜總不摧，
異日必當成大用，功名作個棟樑材。
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