基于有限元的钢筋混凝土开口深梁设计与分析  

Design and Analysis of Reinforced Concrete Deep Beams with Openings Based on Finite Element Method

作　　者：寇继文 KOU Ji-wen(The 4th Engineering Co.,Ltd.Of China Railway 18th Bureau Group,Tianjin 300350,China)

机构地区：[1]中铁十八局集团第四工程有限公司,天津300350

出　　处：《广东水利电力职业技术学院学报》2024年第1期34-37,90,共5页Journal of Guangdong Polytechnic of Water Resources and Electric Engineering

摘　　要：深梁在受到外荷载时,其受力特点较为复杂。对此,采用有限元模型分析简支深梁和连续深梁存在孔洞时其受力变形规律。结论如下:①开口深梁在受到外荷载作用时,横截面不符合平面假定;②梁体受到外荷载时,其挠度值能够满足要求。③简支开口深梁梁体在开口处存在应力集中现象,应在梁两端增加斜向钢筋配置,在开口处也应加强钢筋构造,其余部位按照一般梁配筋。④两跨连续开口深梁开口处应力集中现象与单跨梁相比较弱,但中间支座受到的剪应力最大,需加强中间支座处的钢筋布置。When subjected to external loads,the stress characteristics of deep beams is more complex.In this study,a finite element model was employed to analyze the stress and deformation patterns of simply supported deep beams and continuous deep beams with openings.The conclusions are as follows:(1)The cross-section of the deep beam with openings does not conform to the plane assumption when subjected to external loads.(2)The deflection values of the beam meet the requirements when subjected to external loads.(3)For simply supported deep beams with openings,stress concentration occurs at the opening,and inclined reinforcement should be added at both ends of the beam.Additionally,reinforcement should be strengthened at the opening,while the rest of the beam follows the general reinforcement design.(4)Compared to single-span beams,the stress concentration at the opening of two-span continuous deep beams with openings is weaker.However,the intermediate support experiences the maximum shear stress and requires reinforcement in the arrangement of steel bars at the intermediate support.

关 键 词：有限元 受力分析 开口深梁 

分 类 号：TU375.1[建筑科学—结构工程]