請問鋼筋混凝土折減係數問題 - 土木

By Charlotte
at 2008-12-19T00:32
at 2008-12-19T00:32
Table of Contents
請問
RC中的對於剪力的折減係數(0.75)比樑(0.65~0.9)來得低的理由
樑一般屬於拉力控制斷面 折減係數大部分超過0.75
我自己想了一下
是不是因為純剪轉45度會變成斜拉力,混凝土抗拉極差
而樑因為設計撓曲斷面,原本拉力就完全給鋼筋承受,不計混凝土的拉力
所以剪力折減係數較大!?
請大大幫忙解答...........
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