新型灌浆套筒凸肋深度力学性能研究  

Mechanical Properties of New Grouting Sleeve Rib Depth

作　　者：虞小平 梁都 虞爱平[2] 张明浩 YU Xiao-ping;LIANG Du;YU Ai-ping;ZHANG Ming-hao(Department of Civil and Surveying Engineering,Guilin University of Technology AT Nanning,Chongzuo 532100,China;College of Civil Engineering and Architecture,Guilin University of Technology,Guilin 541004,China)

机构地区：[1]桂林理工大学南宁分校土木与测绘工程系,崇左532100 [2]桂林理工大学土木与建筑工程学院,桂林541004

出　　处：《科学技术与工程》2023年第28期12204-12214,共11页Science Technology and Engineering

基　　金：国家自然科学基金(51968014);广西高校中青年教师科研基础能力提升项目基金(2021KY0252);南宁分校教师科研能力培育项目(KYPY202001,KYPY202005)。

摘　　要：良好灌浆套筒的力学性能是保证装配式结构整体性的关键。结合黏结滑移理论,通过对套筒凸肋深度轴向应力、各肋Mises应力、灌浆料第三主应力及套筒极限应力等参数的分析,着重研究新型灌浆套筒凸肋深度对其力学性能的影响。结果表明:套筒凸肋深度与其极限应力有着明显的对应关系,套筒凸肋深度增加,套筒极限应力逐渐增大;套筒凸肋深度与位移有着明显对应关系,套筒凸肋深度增加,其位移变化较缓,但总体位移相差不大;套筒凸肋深度与灌浆料第三主应力有明显关系,套筒在一定凸肋深度范围内,其内部凸肋深度的增加有利于提高灌浆套筒整体力学性能,当凸肋深度超过一定范围后,试件承载力有所下降。The excellent mechanical properties of grout sleeve is the key to ensure the integrity of the prefabricated structure.Combined with the bond-slip theory,the influence of the depth of the grout rib on the mechanical properties was studied in the new type grout sleeve by analyzing the parameters of the axial stress of the sleeve rib depth,the Mises stress of each rib,minor principal stress of the grout material and the ultimate stress of the sleeve.The results show that there is obvious correspondence between the depth of sleeve rib and its limit stress,the depth of sleeve rib increases,and the sleeve limit stress gradually increases.There is obvious correspondence between the sleeve convex rib depth and the displacement,the sleeve convex rib depth increases,the displacement change is slow,but the overall displacement difference is generally consistent.and there is obvious correspondence between the depth of the sleeve convex rib and minor principal stress of the grout material,the increase of the internal convex rib depth is beneficial to improve the overall mechanical properties of the grouting sleeve within a certain range of rib depth,however,when the depth of the convex ribs exceeds a certain range,the bearing capacity of the specimen decreases.

关 键 词：套筒极限应力 凸肋深度 灌浆料第三主应力 Mises应力 轴向应力 

分 类 号：TU513[建筑科学—建筑技术科学]