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BSP高速夯击法是一种路基填土压实新的岩土工程施工技术。在高路堤填筑中,因碾压分层过多,不易控制质量,路面工后沉降大,甚至导致路堤边坡失稳,特别是在某些特殊地段由于施工条件的限制,路基土或回填土难以压实,致使公路运行后出现各种异常情况,严重时影响道路的正常运行,如桥头跳车、路面破损等现象。文章介绍了公路高填路基、桥台背填土的BSP高速夯击法夯击试验,分析了BSP高速夯击法对路基、桥台台后填土夯击时的施工效果以及震动影响。通过实际观测数据进行对比验证,总结出BSP高速夯击法在高填方工程及桥梁台背填土工程的施工工艺及施工技术参数,对工程施工具有一定的参考价值。
BSP high speed tamping method is a new subgrade fill compaction geotechnical construction technology. In the high embankment filling, due to excessive layered roller compaction, not easy to control the quality of the road settlement after the settlement, and even lead to embankment slope instability, especially in some special sections due to construction conditions, subgrade soil or backfill Soil is difficult to compaction, resulting in a variety of abnormal conditions after the operation of the road, seriously affecting the normal operation of the road, such as the bridge jumping, pavement damage and so on. The paper introduces the compaction test of BSP high speed tamping method for highway high embankment and abutment backfill, and analyzes the construction effect and vibration effect of BSP high speed tamping method on the roadbed, abutment and backfill tamping. Through the comparison and verification of actual observation data, the construction technology and construction technical parameters of BSP high-speed tamping method in high-filling engineering and bridge backfilling are summarized, which have certain reference value to the construction.