摘要
结合模型试验、现场试验及有限元分析结果 ,研究了强夯处理桥台背路基时桥台在振动力作用下的变形规律 .提出了桥台的水平位移自桥台顶部至底部逐渐减小 ,最大水平位移出现在桥台顶部 ;水平向瞬时位移随夯击次数的增加呈波动变化 ,达到一定击数后逐渐减小 ;随着夯击功能的增大 ,水平向与竖向瞬时位移的比值呈减小变化规律 .
By combining with the result of model test,field test and finite element analysis,this paper argues about deformation property of abutment under vibrating force when the subgrade back of abutment was compacted by dynamic consolidation.It concludes that horizontal displacement gradually reduce from the top of abutment to its bottom and the max horizontal displacement is at the top of abutment.Horizontal transient displacement fluctuates as the times of dynamic consolidation increase and when the times reach a definite value horizontal transient displacement will reduce.The ratio of horizontal transient displacement and vertical transient displacement gradually decrease with the impact of energy increase.
关键词
桥台
振动力
变形
瞬态位移
路基
强夯
abutment
vibrating force
deformation
transient displacement
