新型装配式密肋楼盖四边简支的受弯承载力  

Flexural Capacity of New Type of Assembly Ribbed Floor with Four-edge Simply Supported

作　　者：于周健 谢群[1] 梁振华 YU Zhoujian;XIE Qun;LIANG Zhenhua(School of Civil Engineering and Architecture,University of Jinan,Jinan 250022,China;Shandong Jiankan Group Co.,Ltd.,Jinan 250000,China)

机构地区：[1]济南大学土木建筑学院,山东济南250022 [2]山东建勘集团有限公司,山东济南250000

出　　处：《济南大学学报（自然科学版）》2020年第2期124-130,共7页Journal of University of Jinan(Science and Technology)

基　　金：山东省重点研发计划项目(2017GSF22106)

摘　　要：为了研究一种新型钢筋桁架密肋楼盖在四边简支情况下的受弯承载力,提出一种适用于该楼盖的线弹性分析计算方法;选取目前常用的交叉梁系法、双向板法和基于弹性力学的修正拟板法3种计算理论,在对该楼盖的受力模型进行简化的基础上,分别采用3种方法计算在不同工况下该新型楼盖的肋梁跨中弯矩;利用ABAQUS软件建立钢筋桁架密肋楼盖三维有限元模型,将ABAQUS软件的计算结果与3种计算方法得出的结果进行对比分析。结果表明,基于弹性力学的修正拟板法求得的肋梁跨中弯矩有较好的精度,计算过程更简便,可以用于该类楼盖的设计。To analyze the flexural capacity of a new type of steel-truss ribbed floor with four-edge simply supported,a elastic calculation method for the floor system was provided.Based on a simplified model,three typical methods including orthogonal beams theory,two-way slab theory,and revised pseudo-plate theory were adopted to predict the mid-span flexural capacity of rib in the new floor system under different loading cases respectively.A three-dimensional finite element model for this floor system was established with ABAQUS software and the simulation results of ABAQUS were compared with data of three calculation methods.The results show that the pseudo-plate method can predict the flexural strength with satisfactory accuracy and more simplified procedure which is suitable for structural design of such type of ribbed floor.

关 键 词：装配式密肋楼盖 受弯承载力 交叉梁系法 双向板法 修正拟板法 

分 类 号：TU375.2[建筑科学—结构工程]