朱朝辉

(合肥工业大学土木与水利工程学院，合肥230009)

 

[摘要] 桩间距的确定是抗滑桩设计中的一个重要内容，其与桩间土体的土拱效应有关。对常见的5种考虑土拱效应的桩间净距计算理论进行了对比分析，结果表明尽管它们已在单个工程算例中被验证为合理的，但它们不具有广泛的适用性与有效性。进而基于归纳法的思想，利用多个实际工程的设计参数，对建立起考虑土拱效应影响的桩间距统一计算公式进行尝试，最终发现无法建立起一种普适的桩间距计算公式。但借助模型试验与现场试验研究增进对土拱效应作用机理的认识，针对局部区域或单个滑坡建立起桩间距的经验计算公式是可能的。

[关键词] 抗滑桩；桩间距；土拱效应

中图分类号：TU452    文献标识码：A  文章编号：1002-848X(2012) S2-0507-03

 

Zhu Zhaohui

( School of civil Engineering Hefei university of Technology, Hefei 230009, China)

 

Abstract: Pile spacing is an important index during the design of anti-slide piles, which affected by the soil arching effect between piles.5 kinds of formulas for calculating the spacing of anti-slide piles had been comparatively analyzed in this article. It is found that they all have not universal applicability and validity in all cases of engineering, although which have been approved by some cases. Based on the inductive method, a widespread applicable formula of pile spacing is try to established with the design parameters of real projects. It is shown that there is no distinct regularity among these data, which indicated that a widespread applicable formula of pile spacing is too difficult to found. But it is possible to establish some experiential method for calculating pile spacing of some local or single engineering, with the enhancive understanding of soil arclung mechanism by field experiment and model investigation.

Keywords: anti-slide pile; pile spacing; soil arching effect