摘要
本文基于双剪统一强度理论推导的核心混凝土抗压强度公式,将拉梅解答引入钢管混凝土的计算中,再参考规范引入考虑长细比影响的承载力折减系数,得到新的钢管混凝土极限承载力计算方法,公式计算值与试验值吻合良好。最后,讨论极限承载力公式中系数k的取值,构建一种新的系数k的计算方法。本方法计算过程清晰、系数较少,研究成果丰富了钢管混凝土柱的计算理论,可为实际工程提供理论参考。
Based on the core concrete compressive strength formula derived from the twin shear strength theory,this paper applies Lame solution into the calculation of concrete-filled steel tube,introduces the reduction coefficient of bearing capacity considering the influence of the ratio of length to fineness according to the reference specification,and proposes a new calculation method of ultimate bearing capacity of concrete-filled steel tube.The value of coefficient k in the ultimate bearing capacity formula was discussed,and a new calculation method of coefficient k was constructed.The calculation process is simple with a reduced number of coefficients.This study enriches the calculation theory of concrete-filled steel tubular column,which can provide reference for practical engineering.
作者
蒙春贵
彭林欣
滕晓丹
MENG Chun-gui;PENG Lin-xin;TENG Xiao-dan(School of Civil Engineering and Architecture,Guangxi University,Nanning 530004,China;Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education,Nanning 530004,China;Key Laboratory of Disaster Prevention and Engineering Safety of Guangxi,Nanning 530004,China)
出处
《广西大学学报(自然科学版)》
CAS
北大核心
2021年第6期1462-1468,共7页
Journal of Guangxi University(Natural Science Edition)
基金
中国博士后科学基金资助项目(2018M633298)
广西自然科学基金资助项目(2018GXNSFAA138176)
广西重点研发计划(桂科AB17292062)
广西创新驱动发展专项资金项目(桂科AA18118055)。
关键词
钢管混凝土
双剪统一强度理论
拉梅解答
柱
承载力
concrete filled steel tube
twin shear unified strength theory
lame solution
column
bearing capacity