装配式建筑组合叠合梁抗弯性能有限元分析
Finite Element Analysis of Flexural Behavior of Composite Beams in Prefabricated Building
彭冰1
作者信息
- 1. 中铁十八局集团产业发展有限公司,天津 300222
- 折叠
摘要
为研究装配式建筑超高性能混凝土(UHPC)与普通混凝土(NC)组合叠合梁抗弯性能,基于对长沙碧桂园月湖湾项目采用ABAQUS有限元分析软件构建三维数值模型,通过对不同材料参数的深入分析,揭示了各参数对叠合梁受弯性能的具体影响机制.研究数据显示,尽管NC抗压强度的增加对提升叠合梁的承载力具有一定作用,但其影响幅度甚微,在实际工程中可以忽略.该提升作用对刚度的增强亦相对有限.另一方面,UHPC抗拉强度的增加对构件极限承载力的提升作用亦相对有限.然而,UHPC受拉高度的增加对于提高叠合梁结构的受弯承载力具有显著效果.在实际工程实践中,通过合理增加受拉纵筋配筋率,可以有效提升构件的极限承载力.
Abstract
For studying the flexural behavior of composite beams made of ultra-high-performance concrete(UHPC)and ordinary concrete(NC)in prefabricated buildings,this paper makes an in-depth analysis of different material parameters by using ABAQUS finite element analysis software based on the three-dimensional numerical model of Yuehu Bay project in the country garden of Changsha,and reveals the influence mechanism of the parameters on the bending behavior of composite beams.The research data show the following findings:the increase of NC compressive strength has a certain effect on the bearing capacity of composite beams,and the insignificant effect can be ignored in practical engineering;the increase has relatively limited effect on the enhancement of stiffness;the effect of UHPC tensile strength also has a relatively limited effect on the ultimate bearing capacity of components;however,the increase of the tensile height of UHPC has a significant effect on improving the flexural capacity of composite beams.Therefore,in practical engineering practice,the ultimate bearing capacity of components can be effectively increased by reasonably increasing the ratio of longitudinal reinforcement.
关键词
装配式建筑/组合叠合梁/数值模拟/试验Key words
prefabricated building/composite beams/numerical simulation/experimental study引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据