夯扩桩的性状及其成果判释

Behaviours of Rammed and Belied Piles and Interpretation of Their Loading Test Results

虽然我国有在工程中成功地使用夯扩桩基支承上部结构物的事例,但其承载力的计算理论及其成果判释还处于积累资料、逐步完善阶段,本文根据湖北省黄石市华新水泥厂等工程的夯扩桩现场载荷试验资料和极限平衡理论,利用全解析方法,导出了一种新的夯扩桩计算模型,与现有的深基础模型相比较,该模型具有确定承载力更接近实际的优点,同时本文分析了夯扩桩的性状,探讨了夯扩桩的承载机理,对夯扩桩载荷试验的成果判释提出了自己的见解。

Though there are many examples in China for the succssful use of rammed and belled pile foundations to support structure in engineering, the theory of bearing capacity calculation aud interpretation of loading test results are still in the stage of accumulating information and being perfected gradually. A new calculation model for rammed and belled pile is established in this paper by using loading tests data of rammed and belled, piles gathered from sites of project of Hua xin Cement Factory Huang Shi City, Hubei province and so forth, together with limit equilibrium theory and analytic method. Compared with current deep foundation models. this model has the advanrage that it can determine the bearing capacity much more closer to the actual value. The behaviors of rammed and belled piles are also analyzed and their bearing mecha nisms are discussed and the author's Comments on the interpretation of loading test results on rammed and belled piles are also given in this paper.