自平衡试桩法的研究现状及应用

Research Status and Application of Self-Balancing Pile Test Method

在桩基础设计计算中,确定单桩竖向承载力静载试验反力装置主要为压重平台、锚桩压重联合、锚桩横梁和地锚,但这些方法既费时费力,又需要大量的资金投入。相比而言,自平衡试桩法作为一种新兴的静载试桩法,具有节约时间成本、操作简便和不受场地限制等突出优点,在国内外均得到了应用。国内外学者对自平衡法进行了深入的研究,其关键在于转换处理确定单桩竖向承载力和精准确定平衡点位置。本文在发现其显著的优越性的同时,也指出了该方法存在的一些缺陷,有待进一步研究解决。

In the design and calculation of pile foundation,the reaction devices of static load test of vertical bearing capacity of single pile are mainly weighted platform,anchor pile combined with anchor pile,anchor pile beam and ground anchor,but these methods are time-consuming and laborious,and require a lot of capital investment.In contrast,as a new static load test method,the self-balancing pile test method has the outstanding advantages of saving time and cost,simple operation and not restricted by the site,which has been applied at home and abroad.Scholars at home and abroad have conducted in-depth research on the self-balancing method,the key is to determine the vertical bearing capacity of single pile by conversion processing and accurately determine the balance point position.In addition to the obvious advantages of this method,some defects of this method are also pointed out in the article,which need to be solved by further research.