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金  琰       （北京市市政工程設(shè)計(jì)研究總院  100045）

蘇幼坡     （河北理工學(xué)院  唐山 063700） 

康谷貽     （天津大學(xué)300072）

[提要]  以國內(nèi)外有關(guān)試驗(yàn)為基礎(chǔ)，給出了集中荷載作用下鋼筋混凝土梁斜裂縫寬度的計(jì)算公式，并利用文中的算式及相關(guān)試驗(yàn)數(shù)據(jù)對(duì)《混凝土結(jié)構(gòu)設(shè)計(jì)規(guī)范》( GB50010-2002)中受剪承載力公式在正常使用階段能否滿足斜裂縫寬度要求的問題進(jìn)行了討論。
[關(guān)鍵詞]  鋼筋混凝土梁  高強(qiáng)箍筋  正常使用階段  斜裂縫寬度

Based on the concerning experiments of domestic and foreign scholars, a calculation formula of diagonal crack width of RC beams is proposed. And based on the formula and results of concerning experiments, the paper discusses whether the limit of diagonal crack width can be met during period of service when the concrete beam is designed with the shear-capacity formula in Code for Design of Concrete Structures (GB50010-2002).
Keywords: high-strength stirrup; period of service; diagonal crack width