基于统一强度理论和拉梅解答的钢管混凝土柱承载力研究  

Research on the bearing capacity of concrete-filled steel tubular column based on unified strength theory and lame solution

作　　者：蒙春贵 彭林欣[1,2,3] 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)

机构地区：[1]广西大学土木建筑工程学院,广西南宁530004 [2]广西防灾减灾与工程安全重点实验室,广西南宁530004 [3]工程防灾与结构安全教育部重点实验室,广西南宁530004

出　　处：《广西大学学报（自然科学版）》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)。

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.

关 键 词：钢管混凝土 双剪统一强度理论 拉梅解答 柱 承载力 

分 类 号：TU398.9[建筑科学—结构工程]