鋼骨鋼筋混凝土梁之撓曲破壞機率

Flexural Failure Probability of Steel Reinforced Concrete Beams

呂文堯(Wen-Yao Lu) ； 游新旺(Hsin-Wan Yu) ； 陳俊良(Chun-Liang Chen) ； 黃淑敏(Shu-Min Huang)

《興大工程學刊》 23卷3期 (2012/11) Pp. 155-166

https://doi.org/10.6287/JENCHU.2012.2303.04

摘要

本文旨在探討鋼骨鋼筋混凝土梁之撓曲破壞機率。本文考慮混凝土抗壓強度，鋼筋及型鋼之降伏應力，梁斷面尺寸，型鋼斷面尺寸，理論彎矩強度之模式誤差及載重等皆為隨機變數之情形下以蒙地卡羅法分析鋼骨鋼筋混凝土梁之撓曲破壞機率。研究結果顯示，根據我國鋼骨鋼筋混凝土Steel Reinforced Concrete（SRC）規範設計之SRC梁，其撓曲破壞機率低於0.00135。SRC梁之撓曲破壞機率值皆會隨著SRC梁之等值抗拉鋼材比之增加而增加。

關鍵字

鋼骨鋼筋混凝土梁 ； 撓曲設計 ； 蒙地卡羅法 ； 破壞機率

並列摘要

The objective of this paper is to investigate the flexural failure probability of steel reinforced concrete beams. The flexural failure probability of steel reinforced concrete beams is determined by the Monte Carlo technique in this paper. The random variables considered in this study are the compressive strength of concrete, the yield stress of reinforcing bar, the yield stress of steel shape, the cross section dimension of beam, the cross section dimension of steel shape, the model error of theoretical bending strength and the loading. This study shows that the flexural failure probability of steel reinforced concrete beams designed using the Taiwanese specification is less than 0.00135. The flexural failure probability of steel reinforced concrete beams increases with the increase of the equivalent tension steel ratio.

並列關鍵字

steel reinforced concrete beams ； flexural design ； Monte Carlo technique ； failure probability