摘要
板柱结构是一种常用的结构形式,但由于自身抗侧刚度和抗侧承载力较小,节点易受到冲切破坏,尤其在地震作用下的不平衡弯矩会导致节点发生冲切破坏,甚至引起连续性倒塌。本文详细列举了板柱结构的震害实例,分析了主要的破坏原因;进一步介绍了国内外关于板柱结构的整体性能试验和节点抗震研究的新进展,阐述了目前常用的提高节点抗冲切能力措施,包括:配置抗冲切钢筋、提高板底纵筋强度和配筋率、应用钢纤维高强混凝土材料、设置柱帽或托板等,同时阐述了板柱结构在我国实际工程中的应用情况和标准化。最后,提出了板柱结构相关研究和推广应用中存在的问题。
Flat plate structure has grown to be one of the most popular forms of construction. However, the slab-column connection is easily failed by punching shear because of limited lateral stiffness and lateral capacity. The brittle punching shear failure can be occurred especially for the shear force and unbalanced moment under earthquake, which may even cause progressive collapse of buildings. The examples of damaged fiat plate buildings due to earthquake are introduced in detail and the main reasons of those failure and damage are analyzed. Moreover, new progress in research on the seismic performance of fiat plate system and slab column connection is presented. To improve the punching shear resistance capacity of the slab column connection, the most common methods are demonstrated, for instance, the use of shear reinforcement, increase of strength and ratio of reinforcement, application of steel fiber reinforcement and high strength concrete and use of shear capital or drop panel. Application and standardization of fiat plate structure in China are also introduced. Finally, the challenges in relevant research and promotion of fiat plate structure are suggested.
出处
《工程抗震与加固改造》
北大核心
2017年第2期1-10,共10页
Earthquake Resistant Engineering and Retrofitting
关键词
板柱结构
板柱节点
冲切
试验
标准化
flat plate system, slab column connection, punching shear, experiment, standardization
作者简介
王璐（1992-），女，博士研究生，研究方向：结构抗震
