半填半挖式路基静动力稳定性分析

重庆交通大学学报（自然科学版） ›› 2007, Vol. 26 ›› Issue (6): 87-91.

半填半挖式路基静动力稳定性分析

蒋鑫¹，邱延峻²，凌建明¹

1.同济大学道路与交通工程教育部重点实验室，上海 200092；2.西南交通大学土木工程学院，四川成都 610031

收稿日期:2006-10-27 修回日期:2006-12-08 出版日期:2007-12-15 发布日期:2015-01-22
作者简介:蒋鑫(1976一)，男，瑶族，湖南永州人，同济大学在站博士后，主要从事道路路基路面工程方面的工作.E-mail:xjiang01@163.com.
基金资助:
教育部优秀青年教师资助计划项目(1900)

Stability Analysis of Part-Cut and Part-Fill Subgrade under Static and Dynamic Loading

JIANG Xin¹,QIU Yan-jun²,LING Jian-ming¹

1.Key Laboratory of Road&Trafic Engineering of the Ministry of Education，TongJi University，Shanghai 200092，China； 2.School of Civil Engineering，Southwest Jiaotong University，Sichuan Chengdu 610031，China

Received:2006-10-27 Revised:2006-12-08 Online:2007-12-15 Published:2015-01-22

摘要/Abstract

摘要： 足够的稳定性是半填半挖式路基设计的前提．针对填挖结合部存有软弱夹层的横向半填半挖式路基，基于 FLAC/SLOPE软件平台，运用强度折减法，探讨了潜在滑动面性态随软弱夹层与地基黏聚力之比值增加而演化的全过程；基于三维快速拉格朗日有限差分法FLAC3D软件平台，分析了同时受横向、竖向地震荷载作用的半填半挖式路基地震动力响应及稳定性．得出结论．半填半挖式路基必须高度重视填挖结合部的良好处理以防止可能出现的滑动失稳，地震将对半填半挖式路基产生不可忽视的影响．

关键词: 道路工程, 半填半挖式路基, 强度折减法, 地震, 稳定性

Abstract: Stability analysis of part-cut and part-fiU subgrade has been a great concern for hi．ghway engineers.Based on the strength reduction method(SRM)，a commercial software named FLAC/SLOPE was conducted to analyze the slide behavior of part-cut part-fill subgrade；at the same time，FLAC3D，a geotechnical cod e based on three dimensional fast lagrangian analysis of continua Was conducted to analyze the dynamic behavior of part-cut part-fill subgrade under the earthquake dynamic loading．So me design-construction comments were provided based on the results of numerical simulation．

Key words: highway engineering, part-cut and part-fill subgrade, strength reduction method, earthquake, stability

中图分类号:

O319.56

蒋鑫，邱延峻，凌建明. 半填半挖式路基静动力稳定性分析[J]. 重庆交通大学学报（自然科学版）, 2007, 26(6): 87-91.

JIANG Xin,QIU Yan-jun,LING Jian-ming. Stability Analysis of Part-Cut and Part-Fill Subgrade under Static and Dynamic Loading[J]. Journal of Chongqing Jiaotong University(Natural Science), 2007, 26(6): 87-91.

参考文献

[1] JTG D30—2004,公路路基设计规范[S] .
[2] Matsui T,San K C.Finite element slope stability analysis by shear strength reduction technique[J] .Soils and Foundations,1992,32(1):59-70.
[3] Griffiths D V,Lane P A.Slope Stability Analysis by Finite Elements[J] .Geotechnique,1999,49(3):387-403.
[4] Dawson E M,Roth W H,Drescher A.Slope stability Analysis by strength reduction[J] .Geotechnique,1999,49(6):835-840.
[5] 赵尚毅,郑颖人,时卫民,等.用有限元强度折减法求边坡稳定安全系数[J] .岩土工程学报,2002,24(3):343-346.
[6] 宋二祥.土工结构安全系数的有限元计算[J] .岩土工程学报,1997,19(2):1-7.
[7] Brinkgreve R B J.PLAXIS 2D-Version 8 Reference Manual[M] .Netherlands:A.A.Balkema Publishers,2002.
[8] Itasca Consulting Group Inc.FLAC2D(Fast Lagrangian Analysis of Continua)Version5.0 User’s Guide[M] .USA:Itasca Consulting Group Inc,2005.
[9] Itasca Consulting Group Inc.FLAC3D(Fast Lagrangian Analysis of Continua in 3 Dimensions)Version3.0 User’s Guide[M] .USA:Itasca Consulting Group Inc,2005.
[10] Zace Services Ltd,Software engineering.Z_Soil.PC 2003user manual tutorials[M] .Switzerland:Zace ServicesLtd,Software engineering,2003.
[11] Rocscience Inc.Slope stability module in Phase2 2D finite element slopestability analysis verification manual version 6.0[M] .Canada:Rocscience Inc,2005.
[12] 李连崇,唐春安,邢军,等.节理岩质边坡变形破坏的RFPA模拟分析[J] .东北大学学报(自然科学版),2006,27(5):559-562.
[13] Itasca Consulting Group Inc.FLAC/SLOPE Version4.0User’s Guide[M] .USA:Itasca Consulting Group Inc,2002.
[14] 陶连金,李晓霖,陆熙,等.地铁诱发地面运动的衰减规律的研究分析[J] .世界地震工程,2003,19(1):83-87.
[15] 刘春玲,祁生文,童立强,等.利用FLAC3D分析某边坡地震稳定性[J] .岩石力学与工程学报,2004,23(16):2730-2733.
[16] 闫长斌,徐国元,李夕兵.爆破震动对采空区稳定性影响的FLAC3D分析[J] .岩石力学与工程学报,2005,24(16):2894-2899.