封板与砼参数对U型约束砼拱架的影响研究  

Study on Influence of the Parameters of Sealing Plate and Concrete on U-type Confined Concrete Arch Centering

作　　者：朱超祁 王琦[1,3] 李为腾[1] 邵行 王新[1] 

机构地区：[1]山东大学岩土与结构工程研究中心,济南250061 [2]中国海洋大学环境科学与工程学院,山东青岛266100 [3]兖矿集团有限公司博士后科研工作站,山东邹城273500

出　　处：《工业安全与环保》2015年第8期1-3,共3页Industrial Safety and Environmental Protection

基　　金：国家自然科学基金(51304125;51379114);中国博士后科学基金(2013M540548;2012M511028);山东省博士后创新基金(201301004);高等学校博士学科点专项科研基金-新进教师类(20130131120090)

摘　　要：为研究封板厚度与混凝土强度对矿用U型约束砼拱架的影响规律,设计了U型约束砼短柱轴压模拟方案。从短柱破坏形态、应力应变曲线、极限承载力等方面进行对比分析,结果表明,封板厚度、混凝土强度均对试件应力应变曲线基本特征、弹性模量无明显影响,但提高混凝土强度、增加封板厚度可以提高试件弹性极限值与极限承载力。In order to study the influence of sealing plate and concrete on the latest invented U- type confined concrete arch centering,a series of axial compression numeric simulation scheme of U- type confined concrete short columns is designed,by which the failure mode,stress- strain curve,ultimate bearing capacity are researched. The study result shows that the thickness of sealing plate and strength of concrete have no influence on basic characteristics of stress- strain curve and modulus of elasticity,but increasing the strength of concrete and the thickness of sealing plate can improve the elastic limit and ultimate bearing capacity.

关 键 词：拱架 U型约束混凝土 深部软岩巷道 有限元分析 

分 类 号：TD353[矿业工程—矿井建设]