The Influence of Axial Load and Prestress on The Shear Strength of Web-shear Critical Reinforced Concrete Elements
The Influence of Axial Load and Prestress on The Shear Strength of Web-shear Critical Reinforced Concrete Elements
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轴向荷载和预应力对腹剪临界钢筋混凝土构件抗剪强度的影响
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
Liping Xie
中科院分区：
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作者：
Liping Xie
通过试验研究了轴压和预应力对腹板受剪临界钢筋混凝土构件抗剪承载力的影响。本文通过两组试验，即板试验和梁试验，研究了两种设计规范，ACI规范和CSA规范，对腹板剪切临界钢筋混凝土构件抗剪强度的准确预测能力。试验结果表明，CSA规范对轴力和剪力共同作用下腹板受剪临界钢筋混凝土构件的抗剪承载力预测效果优于ACI规范。共六个面板，加强几乎相同，进行了测试，在不同的组合下的单轴应力和剪切应力。除了面板试验外，还进行了11根腹板厚度相同的工字形梁在不同轴力和剪力组合作用下的试验。这些梁的参数是纵向钢筋量、横向钢筋量和翼缘厚度。梁是简支的，但加载几何形状是专门设计的，以模拟连续梁在拐点附近的加载条件。
Experimental research was conducted to investigate the influence of axial load and prestress on the shear strength of web-shear critical reinforced concrete elements. The ability of two design codes, the ACI code and the CSA code, to accurately predict the shear strength of webshear critical reinforced concrete elements was investigated through two sets of experiments performed for this thesis, the panel tests and the beam tests. The experimental results indicated that the CSA code provided better predictions for the shear strength of web-shear critical reinforced concrete members subjected to combined axial force and shear force than the ACI code. A total of six panels, reinforced almost identically, were tested under different combinations of uni-axial stress and shear stress. In addition to the panel tests, a total of eleven I-shaped beams, with the same web thickness, were tested under different combinations of axial force and shear force. The parameters for these beams were the amount of longitudinal reinforcement, the amount of transverse reinforcement, and the thickness of the flanges. The beams were simply supported, but the loading geometry was specially designed to simulate the loading conditions in continuous beams near points of inflection.