混凝土空心楼盖柔性与刚性支承界限的分析研究  

Analysis and Research of Flexible-Rigid Supporting Boundary of Concrete Hollow Floor

作　　者：冯程程[1] 罗兆辉[1] 王春培[1] 张吉涛[2] 

机构地区：[1]天津城建大学土木工程学院,天津300384 [2]中广电广播电影电视设计研究院王暐建筑工作室,北京100045

出　　处：《天津城建大学学报》2015年第3期177-181,195,共6页Journal of Tianjin Chengjian University

摘　　要：借助ANSYS有限元分析软件,考虑板、梁协同工作,在4种板跨比的情况下通过改变梁高建立了52个中间板格的混凝土空心楼盖结构三维有限元分析模型.分别对模型进行弹性有限元分析和用拟板法计算板的内力,将这两种方法得到的结果进行比较得出结论:梁的相对抗弯刚度因子对板的内力影响很大,于是提出将2 1αl l?7作为中间板格柔性支承和刚性支承板弹性计算的界限.In view of the interaction of beams and floors,this paper establishes a three-dimensional finite element analysis model of fifty-two concrete hollow floor structures by changing the beam height in four different floor span ratios using finite element analysis software ANSYS. The elasticity of the model is analyzed by finite element method and the internal force of the floor is calculated by the analogue floor method. A Conclusion is drawn by comparing the results got by the two methods that the factor of the relative bending stiffness of the beam greatly influences the internal force of the floor. Therefore,2 1？l l ？7 is advised to be the calculating boundary between the flexible supporting of the middle floors and the elasticity calculation of the rigid supporting floors.

关 键 词：空心楼盖 有限元 柔性支承 刚性支承 

分 类 号：TU375[建筑科学—结构工程]