| 抗弯纵筋对混凝土板冲切承载力的影响 |
| |
| 引用本文： | 张正雨.抗弯纵筋对混凝土板冲切承载力的影响[J].工业建筑,2009(Z1). |
| |
| 作者姓名： | 张正雨 |
| |
| 作者单位： | 浙江大学建筑设计研究院; |
| |
| 摘 要： | 分析了混凝土板的冲切破坏机理并给出了相应的冲切破坏模型。提出混凝土的冲切抗力主要由混凝土和钢筋两部分组成,对于塑性区内的纵筋认为只有其销栓力提供了抗冲切能力,而其轴向拉应力不提供抗冲切能力。通过对钢筋销栓力模型的分析,认为弯曲或弯冲破坏的混凝土板钢筋进入屈服,销栓力为零,钢筋几乎不能提冲切抗力;而对于高配筋率情况下的冲剪破坏钢筋的销栓力对混凝土板的冲切承载力有着显著的影响,且当配筋率大于一定值后冲切承载力不再有明显的提高。
|
| 关 键 词： | 混凝土板 冲切承载力 销栓力 |
INFLUENCE OF LONGITUDINAL REINFORCEMENT ON REINFORCED CONCRETE SLABS'PUNCHING SHEAR CAPACITY |
| |
| Zhang Zhengyu.INFLUENCE OF LONGITUDINAL REINFORCEMENT ON REINFORCED CONCRETE SLABS'PUNCHING SHEAR CAPACITY[J].Industrial Construction,2009(Z1). |
| |
| Authors: | Zhang Zhengyu |
| |
| Affiliation: | Architectural Design & Research Institute of Zhejiang University;Hangzhou 310027;China |
| |
| Abstract: | A failure model for punching shear action in concrete slab is presented on the punching shear performance.Punching shear capacity is constituted by concrete and reinforcement.Longitudinal reinforcement in the plastic area provide punching shear capacity by its dowel stress instead of its axial tensile stress.By analyzing the model of reinforcement it is often yielded and can not provide punching shear capacity in flexural-punching slab.However in a punching shear slab reinforcements have significant influen... |
| |
| Keywords: | concrete slabs punching shear capacity dowel stress |
| 本文献已被 CNKI 等数据库收录！ |
