Shear friction in cracks of concrete beams under shear and torsion

剪切和扭转下混凝土梁裂缝中的剪切摩擦

• 批准号: 428420202
• 负责人: Professor Dr.-Ing. Günter Axel Rombach
• 金额: --
• 依托单位: Institut für Massivbau B-7
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2019
• 资助国家: 德国
• 起止时间: 2018-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/428420202?language=en
• 关键词: Shear; friction; cracks; concrete; beams

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.

该研究项目的目的是在剪切和扭转下的钢筋混凝土梁中的内部力量转移到裂缝上的转移。在剪切和扭转负载下，将测试前14个具有不同尺寸，混凝土抗压强度和最大骨料直径的混凝土单光束，混凝土抗压强度和最大骨料直径。裂纹运动学将由摄影测量法确定。此方法对于使用已知模型确定裂纹摩擦是必要的。实验和分析研究由材料包装Abaqus和Atena的材料非线性有限元计算支持。