RC版最小鋼筋量 - 土木
By Hardy
at 2011-04-26T23:34
at 2011-04-26T23:34
Table of Contents
有個問題想跟各位先進請教,在RC設計中版鋼筋量的最少量的算法。
依據RC設計規範中
13.11.2.1乾縮與溫度之鋼筋面積與版總斷面積之比值不得小於下列規定:
竹節鋼筋,fy < 4,200 kgf/cm2 0.0020
_____________________________________
竹節鋼筋,fy = 4,200 kgf/cm2;
或熔接鋼線網 0.0018 (我們討論這個)
竹節鋼筋,fy > 4,200 kgf/cm2
____________________________________
15cm版我們的最少鋼筋是 0.0018*100*15 / 2 = 1.35 cm2/M
我們是依據法規上說的"鋼筋面積"與版總斷面積比
其中總筋面積並未指名壓力側或者拉力側,所以我們是考慮用全部的鋼筋與面積比
所以除以2。
當然會問這個問題是之前有別的事務所覺的不可以除以2。
PO這個問題上來並非是討戰或者討拍,只是純討論也希望可以在版上多點趣味。
PS:
請不要說誰誰亂做,如果有爭議的請用討論的,不要用指責的。謝謝。
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