摘要
土木工程建设领域中的钢筋混凝土空心圆柱作为一种国内外常用的竖向承重柱体结构,因其内部空心的存在而极大地减小了自身重量,其抗震性能也一直广泛关注。为研究钢筋混凝土空心圆柱的抗震性能,基于abaqus建立数值模拟计算模型。通过改变钢筋混凝土柱中的空心截面直径设计参数,设计3种钢筋混凝土空心圆柱,以此来分析不同空心率的钢筋混凝土空心圆柱。结果表明,随着钢筋混凝土圆柱空心率的增大,结构极限承载能力也随之增强,其中空心率最大的钢筋混凝土圆柱RC3荷载下降段较为平缓,荷载强度较峰值顶端仅下降5.39%,承载能力下降较小,具有更好的延性和变形能力,并且能够提高结构的初始刚度和破坏刚度,增强钢筋混凝土空心圆柱的极限承载能力,有利于结构的抗震性能。
Reinforced concrete hollow columns in the field of civil engineering construction is a kind of vertical load-bearing column structure commonly which is used at home and abroad,it can greatly reduce their weight because of the existence of hollow inside,and its seismic performance has been widely concerned.Therefore,in order to study the seismic performance of reinforced concrete hollow columns,a numerical simulation calculation model is established based on abaqus.By changing the design parameters of hollow section diameter in reinforced concrete columns,three kinds of reinforced concrete hollow columns are designed to analyze reinforced concrete hollow columns with different hollow ratios.The results show that the ultimate bearing capacity of reinforced concrete cylinder increases with the increase of hollow ratio.Among them,the reinforced concrete cylinder RC3 with the largest hollow ratio has a relatively gentle load decline section,the load strength only decreases by 5.39%compared with the peak peak,and the bearing capacity decreases slightly.It has better ductility and deformation capacity,and can improve the initial stiffness and failure stiffness of the structure,and enhance the ultimate bearing capacity of the RC hollow cylinder,which is conducive to the seismic performance of the structure.
作者
谢佳妮
XIE Jiani(School of Railway Engineer,Guangzhou Railway Polytechnic,Guangzhou 511300,China)
出处
《科技和产业》
2024年第15期139-142,共4页
Science Technology and Industry
关键词
钢筋混凝土柱体
圆柱
空心柱
抗震分析
参数分析
reinforced concrete column
a cylinder
hollow column
seismic analysis
parameter analysis
