小截面静压预制桩的现场试验及其应用研究

小截面静压预制桩具有许多优点，能适应山区土层分布不均的地质条件，有着广阔的应用前景。但目前其压桩的终压力估算、承载力的计算方法尚有待于进一步的深入研究总结。根据一个小截面静压桩基工程的现场试验，研究了压桩机理、压桩阻力估算及承载力计算等问题，在总结前人的研究方法与成果的基础上，指出其局限性，并提出应进一步开展的研究方向。

An in-situ test and analysis of static pressed precast piles with small section

The technique of static pressed precast piles with small section has a good and broad application prospects.But there are some problems to be solved in their application.A field measurement of static pressed precast piles has been carried out.Results of the test are analyzed including pile driving force,pile end resistance varying with length,relationship between load settlement,relationship between pile end resistance and settlement.And comparisons between pile driving force,load and pile skin resistance are given.Then the work by former researchers about the pile driving mechanism,the final driving force calculation and the single pile bearing capacity are summarized in brief,including their contributions and defections.Finally,several aspects which should be noted for further research are put forward.