辽宁工程技术大学学报（自然科学版）2024，Vol.43Issue(4)：454-462,9.DOI:10.11956/j.issn.1008-0562.20230516
钢纤维掺量对超高性能混凝土轴压力学性能影响研究
Research on the influence of steel fiber content on the axial compression properties of ultra high performance concrete
摘要
Abstract
To reveal the influence of steel fiber content on the axial compressive properties of ultra-high performance concrete(UHPC),UHPC axial compression tests were conducted with steel fiber content as the control variable and constitutive simulations were conducted.The research show that the stress-strain curve of UHPC under compression consists of an ascending segment and a descending segment.After adding steel fibers,the descending section of the stress-strain curve of UHPC under compression becomes slower.With the increase of steel fiber content,the compressive elastic modulus,peak stress,and peak strain of UHPC all show a decreasing trend.Assuming that the UHPC compression damage area follows a Weibull random distribution,a damage variable is constructed,and a damage correction factor is introduced.A new UHPC compression damage model considering different steel fiber contents is established,and the development law of damage variables is analyzed.The reliability of the new model is verified using UHPC axial compression test data.The research results provide reference for the study of axial compressive properties and constitutive simulation of UHPC under different steel fiber contents.关键词
桥梁工程/超高性能混凝土(UHPC)/钢纤维掺量/轴压/损伤模型Key words
bridge engineering/ultra high performance concrete(UHPC)/steel fiber content/axial pressure/damage model分类
土木建筑引用本文复制引用
刘巧会,黄海峰,薛苗苗,秦肖军..钢纤维掺量对超高性能混凝土轴压力学性能影响研究[J].辽宁工程技术大学学报（自然科学版）,2024,43(4):454-462,9.基金项目
四川省交通运输科技项目(2022-ZL-02) （2022-ZL-02）
