高温后钢管混凝土的粘结滑移本构关系研究  

Constitutive Relationship of Bond-slip Behavior of Concrete-filled Steel Tube after Exposure to High Temperatures

作　　者：林思奇 张宏涛[1] 刘超[1] 张春亮[1] 

机构地区：[1]北方工业大学土木工程学院,北京100144

出　　处：《特种结构》2015年第5期13-15,共3页Special Structures

摘　　要：钢管混凝土界面间的粘结应力是钢管与混凝土间一种重要的相互作用。目前国内外对钢管混凝土的粘结应力和常温下的粘结滑移本构关系研究较多,而高温后钢管混凝土的粘结滑移本构关系的研究由于必须依靠大量试验,相关研究相对较少。然而,高温后结构力学性能对结构承载力影响非常重要,本文基于大量试验,并采用数据拟合的方法修正了试验结果的离散性,得到了高温后钢管混凝土的粘结滑移本构关系,为钢管混凝土的有限元分析奠定了基础。The bond stress of the concrete-filled steel tubular is an important interaction between the steel tube and the concrete. Nowadays many researches have been done on the bond stress and the constitutive relationship of bond-slip behavior at normal temperature of the concrete-filled steel tubular at home and abroad, but the researches on the constitutive relationship of bond-slip behavior after exposure to high temperatures were less as it depends on a large number of experiments. However the mechanical property showed a strong influence on the capacity of structure at high temperature. In this paper, based on the existing experiments, the bond-slip constitutive relationship of the concrete-filled steel tube after exposure to high temperatures was obtained by data fitting, which may provide a reference for the finite element analysis of the concrete-filled steel tubular.

关 键 词：钢管混凝土 高温 本构关系 

分 类 号：TU398.9[建筑科学—结构工程]