核心混凝土徐变对钢管混凝土轴心受压构件的影响分析

Analysis for the influence on the steel-concrete pipe member in central compression by creep of core concrete

当核心混凝土产生徐变时,会出现内力重分布现象,使钢管和混凝土的模量发生变化。文中通过研究钢管混凝土徐变的特点,分析了核心混凝土徐变对钢管混凝土轴心受压构件强度和稳定性的影响,并提出在不同条件下如何考虑徐变对轴心受压构件稳定承载力的影响。

The internal force redistribution will emerge as the core concrete creates creep,which can make the modulus of steel tube and concrete change.The thesis discuss the influ-ence on the strength and stability of concrete filled steel tube member in central compression by creep of core concrete and put forward how to consider the influence on the stble bearing capacity of member in asxis compression on carious conditions.