SHEAR-FRICTION TESTS ON REINFORCED CONCRETE PANELS
SHEAR-FRICTION TESTS ON REINFORCED CONCRETE PANELS
复制标题
钢筋混凝土板的剪切摩擦试验
DOI：
10.14359/3132
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发表时间：
1991
影响因子：
1.8
通讯作者：
M. Nieto
中科院分区：
文献类型：
--
作者：
F. J. Vechio;M. Nieto
描述了一项实验研究，其中在接近剪切摩擦行为的条件下对钢筋混凝土板进行了测试。在每个板中提供的主剪切平面区域被单轴加强和横向预裂。施加在板上的均匀边缘载荷具有不同的剪应力与法向应力之比。通常观察到的跨越剪切平面的抗荷载机制是涉及支柱作用的机制。预先存在的横向裂纹的影响是最小的，而外部施加的正应力是实质性的。修正后的压缩场理论，纳入非线性有限元分析程序，被发现准确地预测强度和载荷-变形响应在这些异常条件下。基于剪切摩擦概念的设计规范公式给出了从高度保守到不保守的强度估计。
An experimental investigation is described in which reinforced concrete panels were tested under conditions approximating shear-friction behavior. A principal shear plane region provided in each panel was uniaxially reinforced and transversely precracked. Uniform edge loads applied to the panels were of varying ratios of shear to normal stress. The load-resisting mechanism typically observed to develop across the shear plane was one involving strut action. The influence of the preexisting transverse cracks was minimal, while that of externally applied normal stresses was substantial. The modified compression field theory, incorporated into a nonlinear finite element analysis procedure, was found to predict accurately strength and load-deformation response under these aberrant conditions. Design code formulations, based on shear-friction concepts, gave from highly conservative to unconservative estimates of strength.