考虑角隅的轻骨料混凝土的四参数统一强度破坏准则

The lightweight aggregate concrete four parameter unification intensity destruction criterion considers the smooth ridge model

轻骨料混凝土在高压应力状态下有平台流塑特性,其破坏强度极限面有别与普通混凝土的开口破坏面,空间上呈两头闭合的状态,与普通混凝土的强度准则有所不同。根据有关试验资料采用双剪统一强度理论的角隅模型,考虑轻骨料混凝土在高压应力比下的流塑特性,建立了适用于轻骨料混凝土的四参数统一强度破坏准则,并通过实例对此破坏准则进行了验证,发现试验和计算数据吻合得较好,说明了该强度准则的合理性。

In view of lightweight aggregate （LWA） concrete represents platform flow plasticity under high compressive stress, its ultimate strength surface assumes two closed conditions in the space, which is completely different from the normal concrete as the ultimate strength surface is open-ended. The lightweight aggregate concrete four parameter unified intensity destruction criterion, which considers flow plasticity of LWA under high compressive stress is established by the smooth ridge model of double shears unified strength theory. And the criterion is confirmed through actual example, we discovere the experiment and the estimated data tallied well, which explaines this intensity criterion rationality.