二级垛式悬臂式挡土墙动土压力分析
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摘要
二级垛式悬臂式挡土墙由两个单级悬臂式L型挡墙按上下砌垛方式组成.通过采用Midas/GTS软件进行有限元分析,输入不同水平地震加速度峰值,分析二级垛式悬臂式挡墙实际墙背动土压力的分布特点,并与振动台模型试验结果进行对比分析,结果表明:数值计算与试验方法这两者的分析结论较为接近.提出了二级垛式悬臂式挡土墙在地震条件下土压力修正系数;依据二级垛式悬臂式挡土墙的特点,探讨了二级垛式悬臂式挡土墙的应用条件及其优越性,以期为工程应用提供理论依据及技术参考.
Two-step cantilevered retaining wall is consisted of two single-step L-shaped cantilever retaining walls with one going to the other in a stack mode. In the study, finite element analysis is carried on by using Midas/GTS software; different peak values of seismic acceleration are input to analyze the retaining wall distribution characteristics of actual dynamic earth pressure of two-step cantilever retaining walls; the results are compared with those of the shaking table model test. The results show that, conclusions of numerical calculation and model test are close; correction coefficient of earth pressure of two-step cantilever retaining wall under different seismic conditions is presented. According to its characteristics, the application and advantages of two-step cantilevered retaining wall are studied to provide application theoretical basis and technical reference.
Two-step cantilevered retaining wall is consisted of two single-step L-shaped cantilever retaining walls with one going to the other in a stack mode. In the study, finite element analysis is carried on by using Midas/GTS software; different peak values of seismic acceleration are input to analyze the retaining wall distribution characteristics of actual dynamic earth pressure of two-step cantilever retaining walls; the results are compared with those of the shaking table model test. The results show that, conclusions of numerical calculation and model test are close; correction coefficient of earth pressure of two-step cantilever retaining wall under different seismic conditions is presented. According to its characteristics, the application and advantages of two-step cantilevered retaining wall are studied to provide application theoretical basis and technical reference.
引文
[1]李海光.新型支挡结构设计与工程实例[M].2版.北京:人民交通出版社,2010.
[2]姚敦呈.挡土墙的地震破坏分析[J].武汉大学学报(工学版),2003,36(2):82-87.
[3]何义宏.紫坪铺水库左岸重载公路挡土墙震害调查分析[J].路基工程,2009(3):192-193.
[4]骆巍.直立式挡土墙地震破坏机理及抗震措施研究[D].大连:大连理工大学,2012.
[5]江学辉,吴珺华,彭明,等.土袋技术加固膨胀土边坡数值模拟研究[J].江西理工大学学报,2013,34(1):28-32.
[6]Day R W.Design and cnstruction of cantilevered retaining walls[J].Practice Periodical on Structural Design and Construction,1997,2(1):16-21.
[7]Gantes C J,Kanellaidis G,Kallivokas D.Impact of earthquakes on cantilever retaining walls[J].Journal of Structural Engineering,1989,115(10):2566-2578.
[8]Callisto L,Soccodato F M.Seismic design of flexible cantilevered retaining walls[J].Journal of geotechnical and geoenvironmental engineering,2009,136(2):344-354.
[9]Ertugˇrul觟L,Sagˇlam S,觟zkan M Y.Excitation and flexibility effects on dynamic response of cantilever retaining walls[C]//Geotechnical Earthquake Engineering and Soil Dynamics IV.ASCE,2008:1-11.
[10]陈丽.基于数值模拟软件的重力式挡墙抗震性能研究[D].成都:西南交通大学,2010.
[11]赵奎,余乐兴,邵海,等.降雨及爆破振动条件下岩质边坡稳定性研究[J].江西理工大学学报,2015,36(1):43-48.
[12]李辉,桂勇,罗嗣海,等.生态边坡稳定性模型试验研究综述[J].有色金属科学与工程,2013,4(2):66-74.
[13]TBJ 10025-2001,铁路路基支挡结构设计规范[S].
[14]蔡白洁.加筋土支挡结构的地震反应分析[D].兰州:兰州交通大学,2013.
[2]姚敦呈.挡土墙的地震破坏分析[J].武汉大学学报(工学版),2003,36(2):82-87.
[3]何义宏.紫坪铺水库左岸重载公路挡土墙震害调查分析[J].路基工程,2009(3):192-193.
[4]骆巍.直立式挡土墙地震破坏机理及抗震措施研究[D].大连:大连理工大学,2012.
[5]江学辉,吴珺华,彭明,等.土袋技术加固膨胀土边坡数值模拟研究[J].江西理工大学学报,2013,34(1):28-32.
[6]Day R W.Design and cnstruction of cantilevered retaining walls[J].Practice Periodical on Structural Design and Construction,1997,2(1):16-21.
[7]Gantes C J,Kanellaidis G,Kallivokas D.Impact of earthquakes on cantilever retaining walls[J].Journal of Structural Engineering,1989,115(10):2566-2578.
[8]Callisto L,Soccodato F M.Seismic design of flexible cantilevered retaining walls[J].Journal of geotechnical and geoenvironmental engineering,2009,136(2):344-354.
[9]Ertugˇrul觟L,Sagˇlam S,觟zkan M Y.Excitation and flexibility effects on dynamic response of cantilever retaining walls[C]//Geotechnical Earthquake Engineering and Soil Dynamics IV.ASCE,2008:1-11.
[10]陈丽.基于数值模拟软件的重力式挡墙抗震性能研究[D].成都:西南交通大学,2010.
[11]赵奎,余乐兴,邵海,等.降雨及爆破振动条件下岩质边坡稳定性研究[J].江西理工大学学报,2015,36(1):43-48.
[12]李辉,桂勇,罗嗣海,等.生态边坡稳定性模型试验研究综述[J].有色金属科学与工程,2013,4(2):66-74.
[13]TBJ 10025-2001,铁路路基支挡结构设计规范[S].
[14]蔡白洁.加筋土支挡结构的地震反应分析[D].兰州:兰州交通大学,2013.
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