THEORY STUDY ON AXIAL LOADING CAPACITY OF STEEL TUBE CONFINED HIGH-STRENGTH CONCRETE COLUMNS
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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。Abstract: 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.
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