改进的分层总和法在铁路地基沉降中的应用

严栋

铁道工程学报 ›› 2010, Vol. 27 ›› Issue (10) : 26-29.

PDF(403 KB)
PDF(403 KB)
铁道工程学报 ›› 2010, Vol. 27 ›› Issue (10) : 26-29.
路网研究

改进的分层总和法在铁路地基沉降中的应用

  • 严栋
作者信息 +

Application of Improved Layed Summation Method in Calculation of Railway Foundation Settlement

  • YAN Dong
Author information +
文章历史 +

摘要

研究目的:高速铁路对控制沉降提出了很高的要求,而地基的沉降计算一直是工程实践中未能很好解决的问题。为准确计算地基的沉降量,在总结已有研究成果的基础上,利用室内压缩试验,提出割线模量法,然后利用Bussinesq解,来计算铁路地基最终沉降量,并验证该方法的可行性,为类似工程提供参考。
研究结论:依据实际工程,通过传统分层总和法、割线模量法、扩散角法所计算的沉降结果与现场实际观测结果比较,发现割线模量法所得的结果与实际结果较接近,表明该方法相对于其他两种方法具有较高的精确性,更具有可行性。

Abstract

Research purposes: The settlement of hish—speed railway must be strictly controlled,but it is very difficult to accurately calculate the foundation settlement in design of high—speed railway.In order to calculate the settlement of foundation accurately,a secant modulus method is offered through doing the indoor compression test on the basis of the existing research results.The final foundation settlement of railway is obtained by using the secant modulus method and the Bussinesq§solution.The verification shows this method is available and can be as the reference to the similar works.
Research conclusions: From the comparison of the calculation results obtained with the traditional layed summation method,the secant modulus method and the angle of spread method for one actual construction project,it was found the results obtained with the secant modulus method Was close to the actual foundation settlement.This indicates that the secant modulus method iS accurate and available.

关键词

压缩试验 / 割线模量 / Bussinesq解 / 分层总和法

Key words

compression test / secent modulus / Bussinesqg solution / layed summation method

引用本文

导出引用
严栋. 改进的分层总和法在铁路地基沉降中的应用[J]. 铁道工程学报, 2010, 27(10): 26-29
YAN Dong. Application of Improved Layed Summation Method in Calculation of Railway Foundation Settlement[J]. Journal of Railway Engineering Society, 2010, 27(10): 26-29
中图分类号: U213   

参考文献

[1]韩志霞,崔俊杰.客运专线铁路路基沉降控制的若干问题 [J].铁道工程学报,2009(2):25—29.
Him Zhixia,Cui Junjie.Solution to the Control of Subgrade Settlemem for Passenger Dedicated Line[J]. Journal of Railway Engineering Society,2009(2):25— 29.
[2]魏汝龙.整理压缩试验资料的一种新方法[J].水利水 运科学研究,1980(3):90一93.
Wei Rulong. A New Method of Sorting out the Compression Test Dates[J].Hydro—Science and Research,1980(3):90—93.
[3]刘保健,张军丽.土工压缩试验成果分析方法与应用 [J].中国公路学报,1999(1):37—41.
Liu Baojian,Zhang Junli.Application and Analysing Method for soil Compression Test[J].China Journal of Highway and Transport,1999(1):37-41.
[4]李又云,谢永利,刘保健.修正割线模量法在沉降计算中 的应用[J].公路交通科技,2008(25):58-65.
Li Youyun,Xie YongU,Liu Baojian.Application of Modified Secant Modulus Method in Settlement Calculation [J]. Journal of Highway and Transportation Research and Development,2008(25): 58—65.
[5]丁洲祥,龚晓南,李又云,等.割线模量法在沉降计算中 存在的问题及改进探讨[J].岩土工程学报,2005(3): 313—316.
Drag Zhouxiang,Gong Xiaonan,Li Youyun,etc.Study on Some Problems of Settlement Calculation with Secant Modulus Method and Its Modification[J].Chinese Journal of Geotechnical Engineering,2005(3):313— 316.
[6]蒋关鲁,王海龙,李安洪.高速铁路路基基底应力计算方 法研究[J].铁道建筑,2009(4):65—69.
Jiang Guanru,Wang Hailong,Li Anhong.Study OIl Calculation Method of Subgrade Base Stress on High- speed Railway[J].Railway Engineering,2009(4):65— 69.
[7]赵振勇.粉质土路基沉降机理与发展规律研究[D].湖 南:湖南大学,2005.
Zhao Zhenyong.Study Oil Settlement Mechanism and Regularity of Silty Soil Subgrade[D].Hunan:Hunan University,2005.
[8]吴丽君,蒋关鲁,李安洪,等.胶济客运专线非饱和原状 粉质粘土固结试验[J].铁道建筑,2009(5):100—104.
Wu Lijua,Jiang Guanru,Li Anhong,etc.Test of Consolidation of Non—saturated Undisturbed suty Clay Used in Qingdao—Jinan Passenger—dedicated Railway [J].Railway Engineering,2009(S):100—104.
[9]杨光华,王鹏华,乔有梁.地基非线性沉降计算的原状土 割线模量法[J].土工工程学报,2007(40):49-52.
Yang Guanghua,Wang Penghua,Qiao YouUang.An Undisturbed.soft Secant Modulus Method for Calculation of Nonlinear Settlement of Soil Foundations [J].China Civil Engineering Journal,2007(40):49— 52.
 

PDF(403 KB)

Accesses

Citation

Detail

段落导航
相关文章

/