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为适应推广应用轻骨料砼的需要，本文利用自制的砼多轴试验装置，对国内尚未研究，国外也较少开展的轻骨料砼在双轴压及拉压应力组合下的变形和强度特性进行了试验研究，分析了应力一应变关系的特点。并与普通砼的特性进行了比较，在分析试验资料的基础上，建议了轻骨料砼在主应力空间及八面体应力空间表述的强度准则和以峰值应力点的应变与应力比α的关系表述的强度准则。本文的工作为复杂应力状态下轻骨料砼结构的设计提供了经济可靠的设计依据。
In order to meet the need for the promotion and application of lightweight aggregates, this paper uses the self-made multiaxial test apparatus for the deformation and strength of domestic lightweight aggregates that have not been studied at home and that are less developed in the world under the combination of biaxial compression and tension and compression stress. The characteristics were tested and the characteristics of the stress-strain relationship were analyzed. Comparing with the characteristics of common helium, on the basis of analysis of experimental data, the relationship between the strength criterion of light weight aggregates in the principal stress space and the octahedral stress space and the relationship between strain and stress ratio α at the peak stress point are suggested. Expressed strength guidelines. The work of this paper provides an economical and reliable design basis for the design of lightweight aggregate concrete structures under complex stress conditions.