后灌浆钢管混凝土的轴向冲切性能

The Axial Punching Properties of Post-grouting Concrete Filled Steel Tube

在试验的基础上,对后灌浆钢管混凝土柱的轴向冲切力学性能进行评估,分析不同后灌浆方式对轴向冲切破坏的影响规律.通过反分析方法,利用试验数据得到模拟后灌浆界面本构方程的相关参数,探讨了原混凝土柱与钢管之间的后灌浆连接方式及轴向冲切作用下的变形特性.基于试验和数值模拟结果,提出了后灌浆界面连接方式的建议,为今后相关工程提供参考.

Post-grouting concrete filled steel tube is ordinary technology in vertical bearing structures.Based on the experiment,this paper evaluated the mechanics performance of axial punching of post-grouting concrete filled steel tube and summarized the various methods＇ influences on the axial punching.By （using） experimental data and inverse analysis method,the related parameters for interface properties were obtained.This paper summed up the deformation characteristics of the post-grouting connection between the（original） concrete columns and steel tube connection under the action of axial punching.Based on the experiment and numerical method,the post-grouting connection method of interface was proposed,which provides a reference for future related projects.