CAJ | 학술논문

基于高莲士教授针对天生桥面板堆石坝灰岩所进行的堆石料在不同应力路径下的大型三轴试验结果，提出亚塑性理论边界面模型参数的简捷确定方法。通过编制调参程序，对堆石料典型三轴试验进行数值模拟，与试验成果的对比表明，模型能较好地反映各种复杂加载路径下堆石料变形性状。进而对恒应力比转折、恒应力比加卸载、平面应变试验等土体单元可能出现的复杂应力路径进行了预测，对深入了解高围压下摩擦型材料的屈服及应力路径相关等特性具有一定意义。同时合理的模型参数为进行面板堆石坝的变形预测和数值仿真模拟奠定了基础。
기우고련사교수침대천생교면판퇴석패회암소진행적퇴석료재불동응력로경하적대형삼축시험결과， 제출아소성이론변계면모형삼수적간첩학정방법。 통과편제조삼정서， 대퇴석료전형삼축시험진행수치모의， 여시험성과적대비표명， 모형능교호지반영각충복잡가재로경하퇴석료변형성상。 진이대항응력비전절、 항응력비가사재、 평면응변시험등토체단원가능출현적복잡응력로경진행료예측， 대심입료해고위압하마찰형재료적굴복급응력로경상관등특성구유일정의의。 동시합리적모형삼수위진행면판퇴석패적변형예측화수치방진모의전정료기출。
Based on typical large-scale triaxial testing data for rockfills performed by Prof. Gao Lianshi, a concise procedure is presented for determining or/and calibrating the model parameters of bounding surface hypoplasticity constitutive law. Through a comparison between numerical simulations and test results for various static loading conditions, the validity of the constitutive model and its capability to reproduce complex behavior such as dilatancy and confining-pressure dependency of rockfill materials are verified. Furthermore, some realistic predictions of granular soils subjected to complex loading stress paths which are most likely to occur in practical rockfill dams are presented. These simulations are beneficial to gain a good understanding for properties of compression yielding and stress path dependency for rockfills under high confining pressures.