山东农业大学学报（自然科学版）2017，Vol.48Issue(2)：178-185,8.DOI:10.3969/j.issn.1000-2324.2017.02.004
三面包柱梁式钢筋混凝土柱托换节点受力性能研究
Study on Performance of Underpinning Joint with Three Sides Beams Enclosed RC Column
余潇 1吴二军 1王婷2
作者信息
- 1. 河海大学土木与交通学院,江苏南京210098
- 2. 河海大学港口海岸与近海工程学院,江苏南京210098
- 折叠
摘要
Abstract
In structural underpinning projects,the construction space of one side's concrete column could often be narrow,thus the common underpinning method four sides beams enclosed RC column of is not applicable.This paper introduced a kind of underpinning joint with three sides beams enclosed RC column column in combination with a project case,and made force analysis on that through finite element calculation which verified the reliability of the design,and inspected the influence rule of its failure mode,stress mechanism and prestress size on its carrying capacity via experiments.The experiment results showed that the underpinning joint with three sides beams enclosed RC column has a good bearing capacity and drawability,and the destruction pattern is the new-old concrete interface slip failure and the underpinning beam bottom's punch;the bearing capacity of underpinning joint and the imposed prestress size presents a highly linear relation.When each side of the joint is exerted with 30kN prestress,the ultimate bearing capacity could be improved by 78.84％.关键词
柱托换/三面包柱梁/有限元/预应力/受力性能Key words
Column-underpinning/three sides beams enclosed column/finite element/prestress/force performance分类
建筑与水利引用本文复制引用
余潇,吴二军,王婷..三面包柱梁式钢筋混凝土柱托换节点受力性能研究[J].山东农业大学学报（自然科学版）,2017,48(2):178-185,8.
