[1]石名磊,赵俊明,鲁安顺.高速公路地基沉降反演分析[J].东南大学学报(自然科学版),2005,35(4):589-592.[doi:10.3969/j.issn.1001-0505.2005.04.020]
 Shi Minglei,Zhao Junming,Lu Ansun.Back-calculation of ground settlement for freeway[J].Journal of Southeast University (Natural Science Edition),2005,35(4):589-592.[doi:10.3969/j.issn.1001-0505.2005.04.020]
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高速公路地基沉降反演分析()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
35
期数:
2005年第4期
页码:
589-592
栏目:
土木工程
出版日期:
2005-07-20

文章信息/Info

Title:
Back-calculation of ground settlement for freeway
作者:
石名磊 赵俊明 鲁安顺
东南大学交通学院, 南京 210096
Author(s):
Shi Minglei Zhao Junming Lu Ansun
College of Transportation, Southeast University, Nanjin 210096, China
关键词:
地基沉降 反演分析 固结系数 亚砂土
Keywords:
ground settlement back-calculation coefficient of consolidation sandy loam
分类号:
TU432
DOI:
10.3969/j.issn.1001-0505.2005.04.020
摘要:
基于竖向排水体饱和土地基固结理论解答,提出了考虑地基排水井加固区下卧层修正的路堤沉降数据反演地基固结特性的计算方法.比较了室内实验数据与对应现场反演计算参数,得出了反演分析固结系数相对高出室内固结试验成果1~2个数量级.运用这一成果,预测路堤中线下地基固结沉降历时曲线与实测沉降曲线很好吻合.因此,反演计算分析得到的海相沉积土的固结系数相对室内固结试验数据更加合理.
Abstract:
Based on the theoretical solution for vertical drain consolidation, an approach of the back-analysis of the test embankments to evaluate the field consolidation behaviour is proposed, in which the consolidation affected by underlying stratum below the subsoil improved with prefabricated vertical drains is modified. Then a comparision is made between coefficient of consolidation measured in the laboratory and corresponding back-calculated field values of the parameters, and from which the coefficient of consolidation for the sandy loams derived from the back-calculated approach is 1-2 magnitude greater than that measured in the laboratory. The back-calculated results are further used to predict the settlement versus time curves under the embankment centerline which coincides well with those measured in field. Therefore it is believed that the coefficient of consoildation for natural marine soils derived from back-calculation is more rational than that measured in the laboratory.

参考文献/References:

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备注/Memo

备注/Memo:
基金项目: 江苏省交通科学研究计划资助项目(02Y015).
作者简介: 石名磊(1962—),男,博士,副教授,mingleish@263.net.
更新日期/Last Update: 2005-07-20