杨  烨¹，赵来顺²，赵  曼²
（1 中国核电工程有限公司，北京100840; 2 西安科技大学建工学院，西安710054)

[摘要] 将植筋技术用于新旧混凝土结合面，形成了改进的加大截面加固法。将改进的截面加大法用于加固轴心受压构件并对其进行试验研究，分析比较了新旧混凝土界面的破坏特征、共同工作性能及加固构件的承载力变化情况，提出了有关设计与施工的建议，供研究、设计和施工参考。
[关键词] 新旧混凝土界面；加大截面加固法；化学植筋

Experimentalinvestigation of axial compression column be strengthened with the method of enlarging sectional areas
Yang Ye¹,  Zhao Laishun²,  Zhao Man²
(1 China Nuclear Power Engineering Co., Ltd., Beijing 100840, China;2 School of Civil Engineering, Xi'an University of Science and Technology, Xi'an 710054, China)

Abstract: The work mechanism of the method of enlarging sectional areas and the interface mechanical performance have be more systematical analyzed and studied with the structural testing method.
Keywords: interface between old and new concrete; the method ofenlarging sectional areas; bonded rebar