市政技术2023，Vol.41Issue(12)：20-27,8.DOI:10.19922/j.1009-7767.2023.12.020
钢-UHPC组合梁抗弯性能理论研究
Study on the Flexural Performance of Steel-UHPC Composite Beams
王敏 1聂立力 2周迅2
作者信息
- 1. 湖北水利水电职业技术学院,湖北武汉 430000
- 2. 中国市政工程中南设计研究总院有限公司,湖北 武汉 430010
- 折叠
摘要
Abstract
In order to solve the problem of large dead weight and fissility of steel-NC composite beam bridge,the structure of steel-UHPC composite beam bridge has been proposed.Based on the flexural performance test of positive bending moment of the composite beams,the mechanical properties of the beams are theoretically analyzed to suggest a modified plastic calculation method.The results show that the flexural capacity of steel-UHPC composite beams with common sections can be accurately calculated by the method considering post-yield strengthening and post-crack tensile properties of steel beams;The effect of interface slip should be considered during the calculation of the vertical deflection;As for the calculation of vertical deflection of steel-UHPC composite beams,the calculated value is closer to the experimental value when the shear stiffness of the studs is 1/2Q.The calculation method can provide some reference for the theoretical calculation of composite beams.关键词
桥梁工程/钢-UHPC组合梁/抗弯性能/抗弯承载力/竖向挠度Key words
bridge engineering/steel-UHPC composite beam/flexural performance/flexural capacity/vertical deflection分类
交通运输引用本文复制引用
王敏,聂立力,周迅..钢-UHPC组合梁抗弯性能理论研究[J].市政技术,2023,41(12):20-27,8.
