摘要
利用PFC2D模拟了黏性土的单轴压缩试验,该试验中模型尺寸为100 mm×50 mm,通过改变模型颗粒半径而改变颗粒数量,经过试算,当颗粒数量大于约3 000时,其对数值模拟结果影响不大,此时颗粒半径为0. 5 mm~0. 8 mm。
The uniaxial compression test of cohesive soil was simulated by PFC2 D,and the size of the model is 100 mm × 50 mm. According to change the radius of particle to alter the number of particle. We found that the influence of the number of particle to the result of simulation is too small to ignore if the number of particle is more than about 3 000,the radius of particle is 0. 5 mm ~ 0. 8 mm.
引文
[1]国家自然科学基金委员会,中国科学院.未来10年中国科学发展战略:能源科学[M].北京:科学出版社,2012.
[2] Guy T. Houlsby,Byron W. Byrne. Suction Caisson Foundationsfor Offshore Wind Turbines and Anemometer Masts[J]. WindEngineering Volume,2000,24(4):249-255.
[3]石崇,徐卫亚.颗粒流数值模拟技巧与实践[M].北京:中国建筑工业出版社,2015.
[4]孙曦源,栾茂田,唐小微.饱和软黏土地基中桶形基础水平承载力[J].岩土力学,2010,31(2):667-672.
[5]常在.土的颗粒力学理论及数值模拟[D].北京:清华大学工学硕士学位论文,2008.
[6]詹云刚.水平—竖向—扭转荷载下吸力式沉箱基础承载特性数值研究[J].工业建筑,2010,40(10):76-81.
[7]施晓春,龚晓楠,徐日庆.水平荷载作用下桶形基础形状的数值分析[J].中国公路学报,2002,15(4):49-52.
[8]罗勇.土工问题的颗粒流数值模拟及应用研究[D].杭州:浙江大学,2017.