强夯冲击荷载作用下山区填土地基的应力与位移分析

Analysis of stress and displacement of mountain filled foundation under dynamic compaction impact loading

利用ABAQUS有限元软件,建立了计算分析模型,对重庆山区典型填土地基的强夯应力、位移进行了模拟分析,指出在相同的夯击能下,夯锤重量越大,其接触土体时产生的应力呈降低的趋势,最大夯沉量以及夯后土体回弹量呈增加的趋势,夯坑隆起量变化不大;采用重锤低落距的强夯效果优于轻锤高落距。

Using the ABAQUS finite element software,this paper established the calculation analysis model,simulated and analyzed the compaction stress and displacement of Chongqing area typical filled foundation,pointed out that in the same tamping energy,the greater of hammer weight,the stress of contact soil decreased,the maximum settlement and after compaction soil rebound increased,the tamping pit uplift volume changed little,the dynamic compaction effect using strong hammer low distance better than light hammer high drop distance.