复合受力状态下混凝土构件的破坏

用混凝土的破坏准则分析了复合受扭构件的各种破坏,我国现行的混凝土结构设计规范中的压弯剪扭复合受力构件计算公式偏于保守,不利于普通和高强混凝土的受扭承载能力的计算,应用调压力场———变角空间桁架模型对压弯剪扭复合受扭构件进行受力分析得出的承载能力计算公式简单,适用性强,值得推广。

THE DESTROY OF THE CONCRETE COMPONENT UNDER THE COMPOUND STRESSED STATE

According to using failure criteria of concrete,it is analyzed different kinds of destroys of a member under compound torsion.In the current design criteria for concrete structure in our country,the computing formula,which is used for computing compound load-bearing member under press,bending,cut and torsion,is inclined to conservation and is adverse to computing bearing capacity of the common and high-strength concrete under torsion.Applying adjusting pressure field——altering corner space truss model to analyze member under "press,bending,cut and torsion" compound torsion,from which the computing formula for load-carrying ability is got.The computing formula is simple,very practicable and deserves to be popularized.