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朱朝輝

(合肥工業(yè)大學(xué)土木與水利工程學(xué)院，合肥230009)

 

[摘要] 樁間距的確定是抗滑樁設(shè)計(jì)中的一個(gè)重要內(nèi)容，其與樁間土體的土拱效應(yīng)有關(guān)。對(duì)常見的5種考慮土拱效應(yīng)的樁間凈距計(jì)算理論進(jìn)行了對(duì)比分析，結(jié)果表明盡管它們已在單個(gè)工程算例中被驗(yàn)證為合理的，但它們不具有廣泛的適用性與有效性。進(jìn)而基于歸納法的思想，利用多個(gè)實(shí)際工程的設(shè)計(jì)參數(shù)，對(duì)建立起考慮土拱效應(yīng)影響的樁間距統(tǒng)一計(jì)算公式進(jìn)行嘗試，最終發(fā)現(xiàn)無法建立起一種普適的樁間距計(jì)算公式。但借助模型試驗(yàn)與現(xiàn)場試驗(yàn)研究增進(jìn)對(duì)土拱效應(yīng)作用機(jī)理的認(rèn)識(shí)，針對(duì)局部區(qū)域或單個(gè)滑坡建立起樁間距的經(jīng)驗(yàn)計(jì)算公式是可能的。

[關(guān)鍵詞] 抗滑樁；樁間距；土拱效應(yīng)

中圖分類號(hào)：TU452    文獻(xiàn)標(biāo)識(shí)碼：A  文章編號(hào)：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