组合桩在唐山沿海地区的试验应用

Experimental Application of Composite Pile in Tangshan Coastal Area

摘要:

唐山沿海地区由于自然历史原因造成土体结构与内陆地区相差甚远，土体结构多层，且上部以软弱粘性土、砂类土为主，使得单一桩型成本较高、效率低、施工难度大且易造成环境污染。针对这些问题并结合本地区地层，设计试验了一套粉喷桩和预应力混凝土管桩相结合的柔刚组合桩施工方法，降低了施工难度、提高了效率、降低了成本，实现桩基施工无泥浆排放的节能环保示范，为类似地区地基基础工程施工提供了借鉴和参考。

Abstract:

Due to the natural and historical reasons, the soil structure is very different to that of inland area in Tangshan coastal area mainly with multi-layer soil structure and soft clay & sand soil in upper part, which leads to high cost of the single pile type with low efficiency, difficult construction and being easy to cause environmental pollution. According to this situation and considering the formation in this area, a set of construction method of flexible-rigid composite pile with cement rejection pile and pre-stressed concrete pipe pile is designed with construction difficulties and cost reduction, efficiency improvement and realization of energy saving and no mud recharge to be an environmental protection demonstration, which provides the reference for foundation engineering construction in this area.