板柱结构防脱落设计方法探讨  

DISCUSSION ON DESIGN METHODS FOR ANTI-SHEDDING OF SLAB-COLUMN STRUCTURE

作　　者：张吉柱 杨燕艳 李荻 刘欣彤 ZHANG Ji-zhu;YANG Yan-yan;LI Di;LIU Xin-tong(China Building Technology Group Co.,Ltd.,100013,Beijing,China)

机构地区：[1]中国建筑技术集团有限公司,北京100013

出　　处：《建筑技术》2023年第9期1062-1066,共5页Architecture Technology

摘　　要：防脱落是板柱结构设计中的重要环节。通过范例演示了防脱落设计中钢筋面积取值及计算方法,对比了常规荷载和重荷载作用下板柱结构的防脱落性能,分析了梁板结构的防脱落性能及板柱结构的破坏过程,为避免板柱节点冲切及楼板脱落发生连锁破坏,提出了结构的防脱落承载力除应大于设计荷载下的脱落作用力外,还应大于实际的抗冲切承载力。此外,还分析了楼板冲切及脱落破坏形态。通过合理的构造措施,可有效提高板柱防脱落承载力的安全储备。Anti-shedding is an important part of the design of slab-column structures.Through the example,the value and calculation method of reinforcement area in anti-shedding design is demonstrated,the anti-shedding performance of slab-column structure under conventional load and heavy load is compared,and the anti-shedding performance of beam-slab structure and the damage process of slab-column structure are analyzed.In order to avoid the chain damage of slab-column node punching and floor slab shedding,the following arguments are put forward:the anti-shedding load capacity of the structure should be greater than the actual punching load capacity in addition to the shedding force under the design load.Furthermore,the floor slab punching and shedding damage patterns are also analyzed.Reasonable construction measures can effectively improve the safety reserve of anti-shedding load-bearing capacity of slab and column.

关 键 词：板柱结构 板柱防脱落 楼板冲切 承载力 

分 类 号：TU74[建筑科学—建筑技术科学]