福建霞浦滩涂地区路桥过渡区处理方案比选研究

STUDY ON COMPARISON OF TREATMENT SCHEMES FOR ROAD AND BRIDGE TRANSITION ZONE IN XIAPU BEACH AREA OF FUJIAN PROVINCE

福建滩涂地区含水率较高,尤其是在处理路桥过渡区桥头跳车问题时,需要对比多种处理方案进行最优选择以确保路堤不均匀沉降发生概率低及路堤稳定性高。依托霞浦实际工程,通过abaqus有限元软件计算了地表沉降、基底压力、路堤坡脚处水平位移,对比了普通填土路堤、宕渣路堤及泡沫混凝土路堤处理软土路基的有效性,认为泡沫混凝土在3种填筑材料中具有明显的工程优越性,可以运用至该地区路基工程中。

The high water content in the beach area of Fujian Province brings great challenges to the roadbed engineering of the area.Especially when dealing with the problem of bridgehead jumping in the transition zone of roads and bridges,it is necessary to compare various treatment schemes to make optimal choices to ensure the probability of uneven settlement of embankments.Low and high embankment stability.Relying on the actual project of Xiapu,the surface subsidence,basement pressure and horizontal displacement of the embankment slope were calculated by abaqus finite element software,and the effectiveness of ordinary fill embankment,slag embankment and foam concrete embankment to treat soft soil roadbed was compared.It is believed that foam concrete has obvious engineering superiority in three kinds of filling materials and can be applied to the roadbed engineering in the area.