生石灰桩处理高含水黄土地基的一种数学模型  

A Mathematical Model for High Water Content Loess Foundation Treated by Quicklime Piles

作　　者：郭鸿[1] 骆亚生[1] 张伯平[1] 郭靖[1] 

机构地区：[1]西北农林科技大学水利与建筑工程学院,陕西杨凌712100

出　　处：《中国农村水利水电》2009年第6期101-104,共4页China Rural Water and Hydropower

摘　　要：生石灰桩处理地基历史虽然悠久,但是就建立比较精确的适用于实际施工的模型公式而言,目前还需做进一步的较细致的研究。因此,如何定量各种因素对桩距的影响对实际施工和理论研究都是很有参考价值的。基于已有的生石灰桩处理软弱地基的参考公式,结合西部地区高含水黄土的实际问题,运用数学模型的分析方法,在考虑了扩桩效应、施工方式、布桩形式、氧化钙含量等因素的前提下,探索出了一种适用于生石灰桩处理高含水黄土地基问题的新模型。在该模型中,提出了桩距系数的概念,并给出了不同施工方式和不同布桩形式情况下的模型公式,得出了用参考公式偏于保守的理论。最后通过实际工程对新模型进行了验证,表明了新模型的合理性。Foundation treatment by quicklime piles has a long history, but as far as establishing more precise model formulas suitable for actual construction is concerned, further research needs to be done at present. Therefore, how to quantify the factors affecting pile spacing is of great reference value for both actual constructions and theoretical studies. Based on the reference formulas for han- dling weak foundation by lime piles and the practical problems in the western part of our country, the mathematical model analysis method is used to get a new model for high water content loess foundation treatment after such factors as pile expanding, construc- tion method, piles arrangement and calcium oxide content are considered. In this model, pile spacing coefficient is created and model formula for different construction methods and different pile arrangements are also given. As a result, formal reference formula used in high water content loess is somewhat conservative. At the end of this paper, the new model is also verified to be rational by the actual projects.

关 键 词：岩土工程 生石灰桩 地基处理 桩距系数 数学模型 

分 类 号：TU444[建筑科学—岩土工程] O141.4[建筑科学—土工工程]