摘要
运用塑性力学理论,对钢管的三向应力和核心混凝土的约束机制进行研究。认为在塑性阶段,外围钢管的三向应力符合Von Mises屈服条件;核心混凝土的三向受压大大提高钢管混凝土构件的极限承载力。采用不同的核心混凝土破坏准则,所得到的结果不一样。
It is studied a steel tube＇ s three-dimensional stress and core＇ s concrete constraint mechanism by plastic mechanical theory. It is also considered that steel tube＇ s three dimensional stress meets R. Von Mises yield condition at plastic stage. Three-dimensional compression of the cure concrete can increase greatly the ultimate bearing capacity. With different core concrete failure criterion, and different results can be got.
出处
《工业建筑》
CSCD
北大核心
2007年第8期22-24,共3页
Industrial Construction
关键词
三向应力
核心混凝土
约束机制
极限承载力
破坏准则
three-dimension stress core concrete constraint mechanism ultimate bearing capacity failure criterion
