建筑结构学报2024，Vol.45Issue(9)：66-75,10.DOI:10.14006/j.jzjgxb.2023.0606
超高性能混凝土与普通混凝土界面抗剪强度计算方法
Calculation method for shear strength of UHPC-NC interface
摘要
Abstract
In order to improve the accuracy and rationality of the calculation of shear strength of the interface between ultra-high performance concrete(UHPC)and normal concrete(NC),the relevant experimental data in domestic and foreign literatures were widely collected to establish a database of UHPC-NC bonding shear tests with total 521 test data.Based on the assumption of an interfacial shear failure mechanism,the calculation method of shear strength of the UHPC-NC interface was proposed through theoretical analysis and data fitting.Compared with the existing code design methods and empirical prediction methods,the proposed calculation method exhibits higher accuracy.In addition,the proposed calculation method was used to improve the damage initiation criterion of interfacial cohesive element using the secondary development of ABAQUS,and the finite element model of UHPC wet joint bending tests was developed.Compared with test results in the existing research,the finite element model is proved to be able to simulate the flexural performance of UHPC joint,which can be used for the engineering design and optimization of UHPC-NC composite members.关键词
UHPC-NC界面/抗剪强度/损伤起始准则/ABAQUS二次开发/UHPC湿接缝Key words
UHPC-NC interface/shear strength/damage initiation criterion/secondary development of ABAQUS/UHPC wet joint分类
建筑与水利引用本文复制引用
谢剑,杨云涛,陈玉洁,朱劲松..超高性能混凝土与普通混凝土界面抗剪强度计算方法[J].建筑结构学报,2024,45(9):66-75,10.基金项目
天津市交通运输科技发展计划项目(2019B-21). （2019B-21）
