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混凝土圓柱支承板的受沖切承載力計(jì)算

田磊，貢金鑫，魏巍巍(大連理工大學(xué)建設(shè)工程學(xué)部，大連 116023)

［摘要］基于我國(guó)《混凝土結(jié)構(gòu)設(shè)計(jì)規(guī)范》(GB50010—2002)中矩形柱支承板受沖切承載力計(jì)算表達(dá)式，采用將圓柱截面等效為方柱截面的方法，提出圓柱支承板受沖切等效設(shè)計(jì)剪力的近似計(jì)算公式，推導(dǎo)出等效設(shè)計(jì)剪力系數(shù)，該系數(shù)與歐洲規(guī)范EN1992-1-1:2004給出的系數(shù)接近，最后給出了圓柱支承樓蓋受沖切承載力的計(jì)算算例。

［關(guān)鍵詞］ 鋼筋混凝土板；沖切承載力；圓柱；矩形柱

中圖分類(lèi)號(hào)：TU375.02文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2011)01-0071-06

Calculation of punching shear capacity for reinforced concrete slab-circular column

Tian Lei, Gong Jinxin, Wei Weiwei

(Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116023, China)

Abstract:Based on calculation of punching shear capacity for slab-rectangular column connections in Code for design of concrete structures (GB50010—2002), approximation methods of calculating equivalent designed shear force for slab-circular column connections were given by ways that circular column was equivalent to square column. The factors of equivalent designed shear force were derived and, these factors are approach to the factors given in EN1992-1-1:2004. Finally,  an example for using proposed factors to check punching shear capacity of slab-circular column connections was given.

Keywords:reinforced concrete slab; punching shear capacity; circular column; rectangular column

*“十一五”國(guó)家科技支撐計(jì)劃項(xiàng)目(2006BAJ01B06-06)。

作者簡(jiǎn)介：田磊，碩士研究生，Email:tianleiwww@gmail.com。

參考文獻(xiàn)

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