公路桥背回填压实试验

Test of backfill compacting on highway bridge back

通过对公路桥头跳车成因的分析,在施工现场对几种不同的桥背回填材料的密实施工进行了试验,得出了与不同的桥背回填材料相匹配的压实机械和相应的施工工艺,提供了压缩百分数和压缩沉降量的压实评定标准,为解决桥背回填压实提供了较为科学合理的施工方法。

By analyzing the cause of subsidence at highway bridge end,the paper studied different backfill material which is compacted in field construction.It was pointed out that the compacting equipment is matched with backfill material and corresponding constructiion arts.The criterion of compaction percentage and compaction depth was provided.