鋼筋混凝土版之貫穿剪力強度評估

Punching Shear Strength Prediction for Reinforced Concrete Slabs

美國ACI規範及英國BS規範方法對於鋼筋混凝土平版之貫穿剪力強度之計算，係採用經驗公式的方法。有別於經驗公式，本研究根據壓－－拉桿模型建議一簡化分析方法來計算鋼筋混凝土平版之貫穿剪力強度。本研究藉由分析值和實驗值之比對，來探討所建議之簡化分析方法之精確性。經由實驗數據之測試比對發現，美國ACI規範方法、英國BS規範方法及本研究所建議之簡易分析方法，對於鋼筋混凝土平版之貫穿剪力強度皆能獲得不錯之預測精度。

The current design provisions on the punching shear strength ofreinforced concrete slabs of the ACI Code and the BS Code are based onempirical formulas. Based on the strut-and-tie model, this study proposesa simplified method to predict the punching shear strength of reinforcedconcrete slabs. The precision of the analytical method was further gaugedby the available experimental data. The comparison shows that the ACICode, the BS Code and the proposed simplified method can all accuratelypredict the punching shear strength of reinforced concrete slabs.