土木与环境工程学报（中英文）2026，Vol.48Issue(1)：142-152,11.DOI:10.11835/j.issn.2096-6717.2023.134
带肋超高性能混凝土与普通混凝土结合面剪切性能
Shear behavior of rib-treated interface between ultra-high performance concrete and normal concrete
摘要
Abstract
The present study investigates the interfacial shear performance between ultra-high performance concrete(UHPC)and normal concrete(NC).To this end,13 UHPC-NC direct shear specimens were designed and fabricated.Through push-out tests,the influence of UHPC rib width,height,and spacing on the interfacial failure mode and shear bearing capacity was discussed.Furthermore,a finite element model of the UHPC-NC specimens was established using the software ABAQUS,and a parameter analysis was conducted.The results indicate that the failure modes of the ribbed UHPC-NC interface mainly include:complete interface failure and UHPC ribs sheared off;partial interface failure and partial failure of NC embedded between UHPC ribs;and partial interface failure and complete failure of NC embedded between UHPC ribs.The specimens with rib widths of 10 mm primarily exhibit the first failure mode,while specimens with rib widths of 15 and 20 mm correspond to the latter two failure modes.It has been demonstrated that the shear capacity and slip of the interface increase with an increase in rib width and spacing,thereby demonstrating enhanced ductility.When the rib width is 10 mm,increasing the rib height has little effect on the shear bearing capacity,while when the rib width is 15 and 20 mm,increasing the rib height can improve the shear bearing capacity.In addition,increasing the number of ribs can improve the shear bearing capacity,but with the increase of the number of ribs,the effectiveness of bearing capacity enhancement significantly decreases.关键词
超高性能混凝土/UHPC-NC界面/推出试验/剪切性能/有限元模拟Key words
ultra-high performance concrete/UHPC-NC interface/push out test/shear performance/finite element simulation分类
建筑与水利引用本文复制引用
王朋,尤学辉,史庆轩,陶毅..带肋超高性能混凝土与普通混凝土结合面剪切性能[J].土木与环境工程学报（中英文）,2026,48(1):142-152,11.基金项目
国家自然科学基金(52178159、52178505) （52178159、52178505）
陕西省教育厅协同创新中心项目(23JY040) National Natural Science Foundation of China(Nos.52178159,52178505) （23JY040）
Scientific Research Plan Projects of Education Department of Shaanxi Provincial Government(No.23JY040) （No.23JY040）
