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首页> 外文期刊>Journal of Civil Engineering and Science >Flexural and Shear Resistance of High Strength Concrete Beams
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Flexural and Shear Resistance of High Strength Concrete Beams

机译：高强度混凝土梁的抗弯和抗剪强度

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摘要

In the present paper, an analytical model is proposed that is able to determine the shear resistance of high strength reinforced concrete beams with longitudinal bars, in the presence of transverse stirrups. The model is based on the evaluation of the resistance contribution due to beam and arch actions. For the resistance contribution of the main bars in tension the residual bond adherence of steel bars and the crack spacing of R.C. beams are considered. The compressive strength of the compressed arch is also verified by taking into account of the biaxial state of stresses. The model was verified on the basis of experimental data available in the literature and it is able to include the following variables in the resistance provision: - geometrical percentage of steel bars; - depth-to-shear span ratio; - resistance of materials; - crack spacing; - tensile stress in main bars; - residual bond resistance;- size effects. Finally, some of the more recent analytical expressions able to predict the shear and the flexural resistance of concrete beams are mentioned and a comparison is made with experimental data.
机译：在本文中，提出了一种分析模型，该模型能够确定在存在横向箍筋的情况下具有纵向钢筋的高强度钢筋混凝土梁的抗剪强度。该模型基于对梁和拱作用引起的阻力贡献的评估。对于主钢筋在拉力方面的阻力贡献，钢筋的残余粘结附着力和R.C的裂纹间距。梁被考虑。还通过考虑应力的双轴状态来验证压缩拱的压缩强度。该模型已根据文献中提供的实验数据进行了验证，并且可以在电阻设置中包括以下变量：-钢筋的几何百分比; -纵剪跨度比; -材料的抵抗力; -裂纹间距; -主钢筋的拉应力; -残余粘结电阻;-尺寸效应。最后，提到了一些能够预测混凝土梁的剪切和抗弯强度的最新分析表达式，并与实验数据进行了比较。

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