自应力钢管轻骨料砼中核心混凝土的本构关系

The constitutive relation of the core concrete of self stress lightweight concrete filled steel tube

总结现有的砼本构关系，经过试验和理论分析，修定了基于弹塑性理论的砼本构关系；确定了四参数强度准则的参数，使之适合于自应力钢管轻骨料砼的核心砼．

All kinds of concrete constitutive reltions are summarized.By experiment and theory analysis the concrete constitutive relation on basis of elasto plasticity theory is corrected.The parameters of four parameter strength standard are ascertained in order to fit the core concrete of self stress lightweight concrete filled steel tube.