一向侧压混凝土在不同加载速率下的受压试验及其破坏准则

本文利用大连理工大学的大型混凝土静、动三轴试验系统，完成了4种侧应力等级和4个数量级加载速率的混凝土受压试验试件共63个。系统地探讨了侧应力和不同加载速率下的受压强度规律。在此基础上，建立了相应的混凝土破坏准则。为地震区受动态双轴压作用的混凝土结构、海上混凝土采油平台等重要结构的动态分析，奠定了可靠的基础。

EXPERIMENTAL STUDY AND FAILURE CRITERION OF COMPRESSIVE CONCRETE UNDER VARIOUS LOADING RATES WITH UNIAXIAL LATERAL CONFINEMENT

The compressive tests of 63 concrete specimens under four lateral stress levels and four loading rates were completed using the static-dynamic triaxial test system for concrete in Dalian University of Technology. The rule of compressive strength of concrete under different loading rates and lateral stresses is discussed systematically in the paper, and the corresponding failure criterion is established. The study results lay down a reliable foundation for the dynamic analysis of concrete structures, such as the structures subjected to dynamic biaxial compression in earthquake regions, the offshore concrete oil plateforms etc.