93年四等特考工程力學第1題 - 土木
By Mason
at 2013-10-17T18:26
at 2013-10-17T18:26
Table of Contents
題目：
http://farm6.staticflickr.com/5550/10325910973_77080e4f24_c.jpg
解題書的計算方式：
http://farm6.staticflickr.com/5544/10325911503_c552e45194_c.jpg
小弟的解題過程：
http://farm3.staticflickr.com/2855/10325911073_f372458239_c.jpg
題解的θ=63.458度，怎麼出來的？計算過程小弟實在是看不懂！
尚且有個疑問，假設答案θ=63.458度，則會造成滾支承的移動，
結構上，即成為不穩定的結構???
小弟的答案θ=45.19度，微度變形，滾支承沒造成重大位移。
滾支承只能承受垂直力，沒辦法承受水平力，若θ=63.458度，必定造成滾支承破壞。
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有關於題解的寫法，小弟實在看不懂，麻煩版上前輩們不吝嗇指導，謝謝！
--
水無常態，兵無常勢。
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Tags:
土木
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