基于承载性能的混凝土楼盖梁板刚度影响因素分析  

Analysis of Influencing Factor of the Beam-Plate Stiffness of Concrete Floors Based on the Bearing Performance

作　　者：任思霖 高林 王苏康 李纯洁 REN Si-lin;GAO Lin;WANG Su-kang;LI Chun-jie(College of Civil and Architectural Engineering,North China University of Science and Technology,Tangshan Hebei 063210,China;Hebei Key Laboratory of Earthquake Engineering and Disaster Prevention,Tangshan Hebei 063210,China)

机构地区：[1]华北理工大学建筑工程学院,河北唐山063210 [2]河北省地震工程与防灾重点实验室,河北唐山063210

出　　处：《华北理工大学学报（自然科学版）》2024年第4期100-109,共10页Journal of North China University of Science and Technology：Natural Science Edition

基　　金：中央引导地方科技发展资金项目(226z4502G):基于陶粒泡沫混凝土的高效节能装配式一体化外墙板关键技术研究。

摘　　要：楼盖结构承载性能的设计中,往往忽略梁板柱等因素对梁板刚度的直接影响,从而影响楼盖结构的设计精度,为了更加准确评价梁板刚度对混凝土楼盖结构承载性能的影响,利用有限元分析软件进行了模拟研究,建立不同工况下的楼盖结构,分析板的中间区格的支座截面、跨中截面的弯矩分布规律,提炼出影响楼盖承载性能的主要影响因素。结果表明:梁高、板厚、梁宽、长短边跨度比对楼盖结构的中间区格的支座、跨中截面弯矩分布影响较明显;各影响因素变化时,中间区格板的主要截面弯矩最大值的位置会分别发生在截面两端和中间位置;柱截面尺寸、柱高对中间区格板的各截面弯矩分布基本无影响,截面弯矩最大值点始终在截面中点处。最终将主要影响因素进行耦合,引入刚度比的概念,为进一步进行楼盖结构承载性能的相关研究给予一定参考。In the design of the bearing performance of concrete floor structures,the direct influence of factors such as beams,slabs and columns on the beam-plate stiffness is often ignored,which affects the design accuracy of concrete floor structures.In order to evaluate the influence of beam-plate stiffness on the bearing performance of concrete floor structures more accurately,conduct simulation research using finite element analysis software,and establishes floor structures under various working conditions,analyzes the bending moment distribution pattern of the support sections and mid span sections in middle zone grid of plate,extract the main factors affecting the bearing performance of the floor.The results show that,the beam height,plate thickness,beam width,and the ratio of long-short-side span impact significantly on the bending moment distribution of the support sections and mid span sections in middle zone grid of plate;When various factors change,the maximum bending moment of the main sections in middle zone grid of plate will occur at both ends and in the middle of the section;The section size and the height of the column have little effect on the bending moment distribution of each section in middle zone grid of plate,and the maximum point of bending moment is always at the midpoint of the section.Finally,the main influencing factors will be coupled and the concept of stiffness ratio will be introduced,providing a certain reference for further research on the bearing performance of concrete floor structures.

关 键 词：有限元分析 混凝土楼盖 承载性能 梁板刚度 刚度比 

分 类 号：TU375[建筑科学—结构工程]