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呂艷梅¹，易偉建²
(1 廣東省建筑設(shè)計(jì)研究院，廣州510010; 2 湖南大學(xué)，長(zhǎng)沙410082)

[摘要] 收集了國(guó)內(nèi)外文獻(xiàn)中的345根集中荷載作用下有腹筋梁的剪切破壞試驗(yàn)數(shù)據(jù)，將所有試驗(yàn)梁的試驗(yàn)結(jié)果與我國(guó)規(guī)范GB50010-2002、美國(guó)規(guī)范ACB18-05、歐洲規(guī)范EC2-02以及Zsutty公式的預(yù)測(cè)結(jié)果進(jìn)行比較，分析各計(jì)算方法的優(yōu)缺點(diǎn)，以及對(duì)各抗剪承載力影響因素的考慮是否得當(dāng)。結(jié)果表明：Zsutty方法的預(yù)測(cè)結(jié)果最為精確，其次是我國(guó)規(guī)范GB50010-2002方法，美國(guó)規(guī)范ACI 318-05和歐洲規(guī)范EC2-02的預(yù)測(cè)結(jié)果比較保守；四種預(yù)測(cè)方法的對(duì)于縱筋配筋率小于I%的梁、有效高度較大的深梁，預(yù)測(cè)結(jié)果安全度偏低。
[關(guān)鍵詞] 高強(qiáng)混凝土；有腹筋梁：抗剪承載力

Research on shear strength of high strength concrete beams:  II Beam with web reinforcement
Lu Yanmei¹,  Yi Weijian²
(1 The Architectural Design and Research Institute of Guangdong Province, Guangzhou 510010, China; 2 Hunan University, Changsha 410082, China)

Abstract: Experimental data of 345 beams without web reinforcement in shear failure was collected  The testing results are compared with failure shear strength calculated by GB50010-2002, ACB18-05, EC2-02, and Zsutty equation, not only the advantages and disadvantages of these methods but also the feasibility of these considerations on influential variables of shear strength are analyzed. The analysis results show that Zsutty equation has the best prediction for shear strength of concrete beams, in the next place is GB code equation, and ACI and EC code equation underestimates the shear strength ofbeams. Besides, four methods are unsafe for beams with longitudinal reinforcement ratios less than 1% and deeper beams with larger efFective depth.
Keywords: high strength concrete; beam with web reinforcement; shear strength