高填方路基后处理技术浅析

高速公路的扩建加宽就必然涉及到新老公路的融合贯通、新老路堤的相互影响等问题,原有路堤经过多年运营,沉降已基本完成,在其边坡上进行扩建加宽,新填的土方和运营后的汽车荷载必然会引起既有路基的附加沉降,并在新老路基之间产生相对过大的差异沉降,进而会引起既有路基变形,严重时则出现路基拉裂,下沉过速等病害。因此选择经济、快速、可靠的加宽处治措施以确保现有高速公路营运安全、确保减小加宽后高速公路新旧路面的差异沉降就显得尤为重要。

Discussion on Treatment Technique of after High-filled Roadbed

The expansion and widening of highway will involve the integration of the old and new roads and the interaction of old and new embankment.After years of operation,the old embankment's settlement has completed.The expansion and widening at its slope,the newly filled earth and the vehicles of operation will inevitably cause the additional settlement of existing subgrade and cause the large differential settlement between the old and new embankment and further lead to the deformation of the existing roadbed.Th...