双向密肋楼盖的计算及设计探讨  

Calculation and design research on two-way ribbed slab floor

作　　者：陈焰周[1] 徐靓玲 蔡红超 赵建超[1] CHEN Yanzhou;XU Liangling;CAI Hongchao;ZHAO Jianchao(Central-South Architectural Design Institute Co.,Ltd.,Wuhan 430071,China)

机构地区：[1]中南建筑设计院股份有限公司,武汉430071

出　　处：《建筑结构》2024年第17期118-123,共6页Building Structure

基　　金：电涡流滑动减振楼板关键技术研究及应用(公司2021010)。

摘　　要：在双向密肋楼盖的设计中采用弹性板对楼板进行计算分析,但与实际密肋楼盖结构相比,常用软件的计算模型在柱帽区域的计算假定存在重复考虑柱帽厚板与框梁重叠区域、板柱连接区与梁柱连接区重叠区域的问题。针对该问题,对密肋楼盖柱帽区域建立了多种不同计算假定的计算模型,分析了各模型对楼盖构件内力的影响,结果表明:考虑这些计算假定上的差异后,会导致与柱帽区域相连接的构件内力计算结果产生极大的变化。设计中应充分关注这些差异带来的影响,避免出现结构安全问题。此外,对密肋楼盖采用将柱帽格构化为等代梁的分析方法,能够避免过高估计柱帽承载能力,计算结果合理,且能方便对柱帽进行配筋设计。In the design of two-way ribbed slab floor,the elastic plate is used to calculate and analyze the floor.However,compared with the actual ribbed slab floor structure,the calculation assumption of the calculation model of the commonly used software in the column cap area has the problem of repeatedly considering the overlapping area between the thick plate of the column cap and the frame beam,the overlapping area between the plate-column connection area and the beam-column connection area.Aiming at this problem,a variety of calculation models with different calculation assumptions were established for the column cap area of ribbed slab floor,and the influence of each model on the internal force of the slab floor members was analyzed.The results show that considering the differences in these calculation assumptions,the internal force calculation results of the members connected to the column cap area will change greatly.In the design,the influence of these differences should be fully concerned to avoid structural safety problems.In addition,the analysis method of latticed column caps into equivalent beams is adopted for ribbed slab floor,which can avoid overestimating the bearing capacity of column caps.The calculation results are reasonable and can facilitate the reinforcement design of column caps.

关 键 词：双向密肋楼盖 柱帽 弹性板 等代梁 配筋设计 

分 类 号：TU318[建筑科学—结构工程]