地震作用下加筋挡土墙稳定性分析

贾亮; 朱彦鹏; 来春景

doi:10.3969/j.issn.0258-2724.2016.04.014

地震作用下加筋挡土墙稳定性分析

doi: 10.3969/j.issn.0258-2724.2016.04.014

基金项目:

国家自然科学基金资助项目(51568044)

甘肃省自然科学基金资助项目(1308RJYA023)

详细信息

作者简介:
贾亮(1978-),男,副教授,博士,研究方向为路基工程,电话:15002530686,E-mail:jialiang1949@163.com

计量
- 文章访问数: 584
- HTML全文浏览量: 45
- PDF下载量: 241
- 被引次数: 0
出版历程
- 收稿日期: 2014-02-14
- 刊出日期: 2016-08-25

Stability Analysis of Reinforced Earth Retaining Wall under Earthquake

摘要

摘要: 为了计算地震作用下加筋挡土墙的整体稳定系数,考虑筋带对其稳定性的影响,基于塑性极限理论上限法,选用对数螺旋作为滑动面,建立了地震作用下加筋挡土墙稳定性分析模型.推导了挡土墙后滑动土体重力所作的外功率、地震对滑动土体所作的外功率、潜在滑移面上的土体粘聚力及筋带与土体间摩擦力所作的内功率,建立了稳定系数计算公式.采用遗传算法,计算了地震作用下加筋挡土墙的稳定系数.研究结果表明,考虑筋带加固作用,基于滑移面动态搜索模型计算得出稳定系数为1.337,比用《公路加筋土工程设计规范》中的方法计算得到的稳定系数大0.08,说明稳定性分析时考虑筋带抗滑移作用是合理的.
- 加筋挡土墙 /
- 动力稳定性 /
- 上限法
Abstract: To calculate the stability factor of reinforced earth retaining wall under earthquake, a stability analysis model was set up based on the upper bound limit theory by considering the effect of the reinforcement strip and selecting the logarithmic spiral as the integral slip surface. The stability factor equation was developed through deduction of the external power made by sliding mass gravity behind the retaining wall, the external power of earthquake on sliding mass, the internal power of soil cohesion of the potential failure surface, and the reinforcement strip on soil friction. The stability factor of reinforced retaining wall under earthquake was calculated using the genetic algorithm. The results show that after considering the reinforcement, the stability factor obtained by the dynamic model of failure surface is 1.337, which is 0.08 higher than the stability factor calculated by the method from Code for Design of Highway Reinforced Earth Engineering. This suggest, taking the anti-sliding effect of reinforcement into accout during the stability analysis is reasonable.
- reinforced earth retaining wall /
- dynamic stability /
- upper bound method

HTML全文

参考文献(18)

山西省交通厅. JTJ 015-91公路加筋土工程设计规范[S]. 北京:人民交通出版社,1992:30-41.

WRIGHT S G, DUNCAN J M. Limit equilibrium stability analyses for reinforced slopes[C]//Transportation Research Record 1330.Washington:Transportation Research Board, 1991:40-46.

程国伟,赵雪胜,李玲. 基于拟静力法的加筋边坡地震稳定性分析[J]. 长江大学学报:自然科学版,2009,6(4):295-297.CHENG Guowei, ZHAO Xuesheng, LI Ling.Seismic stability analysis based on pseudo-static approach of reinforced slopes[J]. Journal of Yangtze University:Nature Science Edition, 2009, 6(4):295-297.

GULER E, ENUNLU A K. Investigation of dynamic behavior of geosynthetic reinforced soil retaining structures under earthquake load[J]. Bulletin of Earthquake Engineering, 2009, 7(3):737-777.

MAGDIL M, EI-EMAM B J. Experiment design, instrumentation and interpretation of reinforced soil wall response of shaking table[J]. Physical Modeling in Goetechnics, 2004, 4(4):13-32.

雷胜友. 双面加筋土高挡墙的离心模型试验[J]. 岩石力学与工程学报,2005,24(3):417-423.LEI Shengyou. Centrifugal modeling of high double-face reinforced earth retaining wall[J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24(3):417-423.

孔宪京,李永胜,邹德高,等. 加筋边坡振动台模型试验研究[J]. 水力发电学报,2009,28(5):152-156.KONG Xianjing, LI Yongsheng, ZOU Degao, et al. Shaking table model tests on soil slope reinforced with geo-grid[J]. Journal of Hydroelectric Engineering, 2009, 28(5):152-156.

韩志型,王宁,刘剑旗. 加筋挡土墙地震动力响应规律及地震动参数影响研究[J]. 矿业研究与开发,2011,31(5):46-50.HAN Zhixing, WANG Ning, LIU Jianqi. Study on the seismic dynamic response law of reinforced roil retaining wall and the effect of strong ground motion parameters on its seismic response[J]. Mining Research and Development, 2011, 31(5):46-50.

NOURIA H, FAKHER A, JONES C J F P. Evaluating the effects of the magnitude and amplification of pseudo-static acceleration on reinforced soil slopes and walls using the limit equilibrium horizontal slices method[J]. Geotextiles and Geomembranes, 2008, 26(4):263-278.

NIMBALKAR S S, CHOUDHURY D, MANDAL J N. Seismic stability of reinforced-soil wall by pseudo-dynamic method[J]. Geosynthetics International, 2006, 13(3):111-119.

陈惠发. 极限分析与土体塑性[M]. 北京:人民交通出版社,1995:5-19.

王均星,王汉辉,吴雅峰. 土坡稳定的有限元塑性极限分析上限法研究[J]. 岩石力学与工程学报,2004,23(11):1867-1873.WANG Junxing, WANG Hanhui, WU Yafeng. Stability analysis of soil slope by finite element method with plastic limit upper bound[J]. Chinese Journal of Rock Mechanics and Engineering, 2004, 23(11):1867-1873.

王均星,王汉辉. 对土坡稳定的有限元塑性极限分析上限法研究的答复[J]. 岩石力学与工程学报,2005,24(10):1819-1820.WANG Junxing, WANG Hanhui. Reply to discussion on Stability analysis of soil slope by finite element method with plastic limit upper bound[J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24(10):1819-1820.

姚令侃,冯俊德,杨明. 汶川地震路基灾害分析及对抗震规范改进的启示[J]. 西南交通大学学报,2009,44(3):302-311.YAO Lingkan, FENG Junde, YANG Ming. Damage analysis of subgrade engineeringin Wenchuan earthquake and recommendations for improving seismic design code[J]. Journal of Southwest Jiaotong Univisity, 2009, 44(3):302-311.

JEWELL R A. Reinforced embankments, theory and practice[M]. London:Thomas Telford, 1990:1-30.

JEWELL R A.Appliant of the revised design charts for steep reinforced slopes[J]. Geotextile and Geomembranes, 1991, 10(3):203-233.

雷英杰. MATLAB遗传算法工具箱及应用[M]. 西安:西安电子科技大学出版社,2005:172-239.

贾亮. 加筋挡土墙的地震作用和动力稳定性分析[D]. 兰州:兰州理工大学,2011.

施引文献

附加材料(0)

访问统计