Shear friction in cracks of concrete beams under shear and torsion

本研究的目的是更好地了解钢筋混凝土梁在剪扭作用下裂缝上方的内力传递。首先对14根不同尺寸、不同混凝土抗压强度和不同骨料最大直径的钢筋混凝土单梁进行抗剪和抗扭试验。裂纹运动学将通过摄影测量确定。这种方法是必要的，以确定使用已知的模型的裂纹摩擦。实验和分析研究的支持下，材料的非线性有限元计算软件包Abaqus和ATENA。

The goal of this research project to get a better knowledge on the transfer of inner forces over cracks in reinforced concrete beams under shear and torsion. First 14 reinforced concrete single beams with different dimensions, concrete compressive strengths and maximum aggregate diameters will be tested under shear and torsion loads. The crack kinematics will be determined by photogrammetry. This method is necessary to determine the crack friction using known models. The experimental and analytical investigations are supported by material non-linear finite element calculations with the software packages Abaqus and ATENA.