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为了研究气泡混合轻质土在复杂应力状态下的变形规律,在实验室开展了三轴试验研究。结果表明:(1)气泡混合轻质土的变形包括压密阶段、线弹性变形阶段、应变硬化和应变软化4个阶段;(2)围压对气泡混合轻质土的变形特性有显著影响;(3)根据应力水平可采用线弹性模型和理想弹塑性模型模拟气泡混合轻质土的变形特性。研究为气泡混合轻质土的工程应用奠定了基础。
In order to study the law of deformation of bubble mixed lightweight soil under complicated stress conditions, a triaxial test was conducted in the laboratory. The results show that: (1) The deformation of bubble mixed lightweight soil includes four stages: compacting stage, linear elastic deformation stage, strain hardening and strain softening. (2) The confining pressure has a significant effect on the deformation characteristics of bubble mixed lightweight soil. (3) According to the stress level, linear elastic model and ideal elastic-plastic model can be used to simulate the deformation characteristics of light-weight mixed soil. The research laid the foundation for the engineering application of bubble mixed light soil.