摘要
为了探究轻型夯动力夯击作用对涵洞安全性的影响,利用PFC2D离散元软件进行计算仿真分析,以夯击过程中涵洞所受水平动压力和水平位移来衡量动力夯实对结构物的动力影响,模拟并计算轻型夯在涵背路基回填动力夯实作业过程中涵背产生的水平应力和水平位移的变化情况。结果表明:涵洞结构在轻型夯动力夯击作用下不会出现结构破坏。
In order to investigate the influence of the dynamic tamping on the safety of culverts, the discrete element software PFC2D was used to carry out the simulation. The dynamic pressure and horizontal displacement of the culvert were determined to measure the effect of dynamic tamping on the structure. Changes in horizontal stress and horizontal displacement of the culvert back emerging during the dynamic tamping with light tamper on the subgrade were simulated and calculated. The results indicate that the structural damage of the culvert does not occur under the action of the dynamic tamping.
作者
张孟强
司癸卯
邵现田
冯志刚
王杨煦
ZHANG Meng-qiang SI Gui-mao SHAO Xian-tian FENG Zhi-gang WANG Yang-xu(Hebei Province Expressway Management Bureau, Shijiazhuang 471000, Hebei, China Key Laboratory for Highway Construction Technology and Equipment of Ministry of Education, Chang＇an University, Xi＇an 710064, Shaanxi, China)
出处
《筑路机械与施工机械化》
北大核心
2017年第4期108-112,117,共6页
Road Machinery & Construction Mechanization
基金
河北省交通运输厅2015年科技计划项目(Y-2014052)
关键词
夯击次数
水平应力
水平位移
离散元软件
tamping times
horizontal stress
horizontal displacement
discrete element software
