高速铁路路基戈壁填料地基系数与变形模量分析

›› 2011, Vol. 32 ›› Issue (7): 2051-2056.

高速铁路路基戈壁填料地基系数与变形模量分析

杨有海，黄大维，赖国泉，夏琼

兰州交通大学土木工程学院，兰州 730070

收稿日期:2010-05-12 出版日期:2011-07-10 发布日期:2011-06-30
作者简介:杨有海，男，1963年生，硕士，教授，主要从事岩土工程、路基工程、工业废料应用及土工合成材料应用等研究工作
基金资助:
铁道部科技研究开发计划项目（No. 2009G020-C）

Analysis of ground coefficient and modulus of deformation of gobi area filler in high-speed railway subgrade

YANG You-hai，HUANG Da-wei，LAI Guo-quan，XIA Qiong

School of Civil Engineering, Lanzhou Jiaotong University , Lanzhou 730070, China

Received:2010-05-12 Online:2011-07-10 Published:2011-06-30

摘要/Abstract

摘要： 以兰新铁路第二双线路基试验段戈壁填料现场填筑试验为依据，分析了路基压实指标K30与Ev2的区别与联系；总结了4个试验工点K30与Ev2及Ev1变形曲线特性，并对地基系数K30与变形模量Ev的相关性进行了分析。结合室内土工试验，对影响K30与Ev2的因素进行总结。结果表明：填土的密实程度是影响K30与Ev1及Ev2/Ev1的主要因素；填料的性质是影响Ev2的主要因素，对 Ev2/Ev1也有较大影响；Ev2为填料的特征参数，反映了路基的刚度；K30为填土压实质量控制指标，K30与Ev1的相关性较好，与Ev2的相关性相对较差，K30与Ev1及与Ev2的相关性的好坏还与填料的性质有关，检测指标越离散，相关性越差

关键词: 戈壁填料, 高速铁路路基, 地基系数, 变形模量

Abstract: Based on the gobi-filler test of testing for subgrade on the second double line of Lan-Xin Railway, the difference and relation between the ground coefficient K30 and the static modulus of deformation Ev2 were analyzed; and the curve feature of ground coefficient K30 and deformation modulus Ev of four different kinds of fillers were summed up; also, the correlation between K30 and Ev were analyzed. With more information of the laboratory test, the acting factors for K30 and Ev2 were summed up. The results show that: ① The compaction quality of the soil is the main factor for K30, Ev1 and Ev2/Ev1. ② The nature of the filler is the main acting factor for Ev2 and it also has a influence on Ev2/Ev1. ③ The Ev2 is the characteristic parameter for the filler; it reflect the rigidity of the subgrade. ④ The K30 is the controlling index for compaction quality. ⑤ The correlation between K30 and Ev1 is closer, while K30 and Ev2 is slight; and different kinds of fillers have different correlations between K30 and Ev; the results reveal that the correlation is little with the checking indices become more disperse.

Key words: gobi area filler, high-speed railway subgrade, ground coefficient, modulus of deformation

中图分类号:

TU470

杨有海，黄大维，赖国泉，夏琼. 高速铁路路基戈壁填料地基系数与变形模量分析[J]. , 2011, 32(7): 2051-2056.

YANG You-hai，HUANG Da-wei，LAI Guo-quan，XIA Qiong. Analysis of ground coefficient and modulus of deformation of gobi area filler in high-speed railway subgrade[J]. , 2011, 32(7): 2051-2056.

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