井壁径向极限承载及应力应变模型试验研究  

Experimental Study of Shaft Wall Radial Limit Loadand Stress-Strain Model

作　　者：石雨婷 贾晓芬[1,2] SHI Yu-ting;JIA Xiao-fen(School of Electrical and Information Engineering,Anhui University of Science and Technology,Huainan 232001,Anhui,China;State Key Laboratory of Mining Response and Disaster Prevention in Deep Coal Mines,Anhui University of Science and Technology,Huainan 232001,Anhui,China)

机构地区：[1]安徽理工大学电气与信息工程学院,安徽淮南232001 [2]安徽理工大学省部共建深部煤矿采动响应与灾害防控国家重点实验室,安徽淮南232001

出　　处：《兰州文理学院学报（自然科学版）》2024年第6期77-80,共4页Journal of Lanzhou University of Arts and Science(Natural Sciences)

基　　金：国家自然科学基金面上项目(52174141);安徽省自然科学基金面上项目(2108085ME158);安徽省重点研究与开发计划资助项目(202104a07020005)。

摘　　要：为探究砼井壁径向极限承载及其应力应变关系,基于统一强度理论的井壁径向承载极限解公式,求解得到井壁径向极限承载,考虑混凝土多轴强度特性,对塑性极限解公式进行修正,给出高强砼井壁径向塑性极限承载力的修正公式,提出了砼井壁径向应力应变关系的数学模型.通过试验,理论预测值与试验的最大误差为2.85%,研究成果对井壁破坏的预测有一定指导作用.In order to explore the radial ultimate bearing capacity of concrete shaft wall and its stress-strain relationship,the solution formula of shaft wall radial ultimate bearing capacity is obtained based on the unified strength theory.Considering the multi-axial strength characteristics of concrete,the plastic limit solution formula is modified,and the revised formula of radial plastic ultimate bearing capacity of high-strength concrete shaft wall is given.The mathematical model of radial stress-strain relation of concrete shaft wall is presented.Through the test,the maximum error between the theoretical predicted value and the test is 2.85%,and the research results have a certain guiding role in the prediction of shaft wall failure.

关 键 词：高强井壁 径向 应力应变关系 承载力 极限解 

分 类 号：TD321[矿业工程—矿井建设]