L形钢管混凝土芯柱正截面承载力研究  

Theoretical Research on Capacity of Normal Cross Section of L-Shape Concrete-Filled Steel Tube Core Column

作　　者：徐亚丰[1] 张宇博[1] O.E.Sysoev Dzyuba Victo 齐文卿 

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168 [2]俄罗斯阿莫尔国立工程大学建筑系,俄罗斯阿莫尔681013 [3]沈阳浑南置业集团,辽宁沈阳110168

出　　处：《沈阳建筑大学学报（自然科学版）》2011年第4期708-714,共7页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家自然科学基金项目(50678106);辽宁省教育厅科研计划资助项目(20060691);沈阳市人才资源开发专项资金资助项目(2007140303002)

摘　　要：目的研究L形钢管混凝土芯柱的承载力变化规律以及影响因素,为钢管混凝土在工程中的应用提供参考依据.方法根据L形钢管混凝土芯柱的工作机理和有限元计算原理,编写MATLAB程序求其承载力,通过改变加载角、偏心距、钢管直径以及钢管厚度等参数研究其对L形钢管混凝土受力性能的影响,并与有限元模拟值进行对比.结果偏心距一定时,加载角在0～45°内变化,L形钢管混凝土芯柱的承载力随加载角的增大而逐渐减小;当钢管厚度不变直径增加,或者钢管直径不变厚度增加时,试件承载力随含钢率的增加而逐渐增大.结论数值模拟结果与有限元模拟结果吻合良好,验证了程序的可行性.可以利用本套程序对L形钢管混凝土芯柱进行进一步的研究,得出不同参数变化下试件承载力的变化规律.The purpose of this paper is to do research on the changing rules of bearing capacity and the influence factors of L-shaped concrete-filled steel tube core column,providing the reference for the application in engineering.According to the working mechanism and the calculation principle of finite element,a program is coded in MATLAB for its bearing capacity.By changing the parameters such as load angle,eccentricity,diameter,and thickness of steel tube,we research on the influence of the bearing capacity of the L-shaped concrete-filled steel tube core column,and compare with finite element simulation value.When in a certain eccentricity,the load angle varying from 0° to 45°,the bearing capacity of L-shaped concrete filled steel tube column gradually decrease with the load angle increasing.When in a certain steel tube thickness and increasing diameter or a certain steel tube diameter and increasing thickness,the bearing capacity of specimens increase gradually with the steel ratio increasing.The results show that the numerical simulation results are in accordance with finite element simulation results.This conclusion has verified the feasibility of the program.We can use this program to study the L-shaped concrete filled steel tube column,in order to obtain the changing rules of the bearing capacity under different parameters.

关 键 词：钢管混凝土芯柱 L形截面 正截面承载力 有限元模拟 

分 类 号：TU398.9[建筑科学—结构工程]