Study on lateral force of underground structure considering rheological effect ofliquefaction ground
ZUO Xi 1,2, ZHOU En-quan 3, REN Yan 2
1. Institute of Architectural Engineering, Jinling institute of technology, Nanjing, 211169
2. Institute of Geotechnical Engineering, Nanjing University of Technology, Nanjing, 210009
3. Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang, 212013
Regarding liquefied soil as fluid and using vector method analyzed liquefaction velocity field which is based on the principle of fluid mechanics, and it also solved velocity field by vector signal operation method. Thus, it is concluded that the analytical expression of underground structure affected by lateral forces in the liquefaction flow site. Finally, it also needs to do analysis about the parameter sensitivity of the analytical expression. The results show that lateral force of underground structure contains pressure and frictional when liquefied soils flow in lateral. Lateral force is mainly composed of inertial force and damping force, and it is related to fluid density, fluid viscosity, tunnel radius and vibration frequency of structures. With the increase of fluid density, fluid viscosity and tunnel radius, added mass and added damping are increasing gradually. Within a certain range, added mass and added damping are more sensitive to vibration frequency.
左熹 1,2,周恩全 3,任艳 2. 考虑液化场地流变效应的地下结构侧向作用力研究[J]. 振动与冲击, 2016, 35(19): 58-62.
ZUO Xi 1,2, ZHOU En-quan 3, REN Yan 2. Study on lateral force of underground structure considering rheological effect ofliquefaction ground. JOURNAL OF VIBRATION AND SHOCK, 2016, 35(19): 58-62.
[1]王国波, 谢伟平, 孙明, 等. 地下框架结构抗震性能评价方法的研究[J]. 岩土工程学报, 2011, 33(4): 593-598.
WANG Guo-bo, XIE Wei-ping, SUN Ming, et al. Evaluation method for seismic behaviors of underground frame structures[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(4): 593-598.
[2] Towhata I, Yssuda S, Ken-Ichi T, et al. Prediction of permanent displacement of liquefied ground by means of minimum energy principle[J]. Soils and Foundations. 1992, 3(32): 97-116.
[3] Uzuoka R, Yashima A, Kawakami T, et al. Fluid dynamics based prediction of liquefaction induced lateral spreading[J]. Computers and Geotechnics. 1998, 22(3): 243-282.
[4] Hwang J, Kim C, Chung C, et al. Viscous fluid characteristics of liquefied soils and behavior of piles subjected to flow of liquefied soils[J]. Soil Dynamics and Earthquake Engineering. 2006, 26(2-4): 313-323.
[5] Montassar S, de Buhan P. A numerical model to investigate the effects of propagating liquefied soils on structures[J]. Computers and Geotechnics. 2006, 33(2): 108-120.
[6] Sawicki A, Mierczyński J. On the behaviour of liquefied soil[J]. Computers and Geotechnics. 2009, 36(4): 531-536.
[7] Huang Yu, Mao Wuwei, Zheng Hu, et al. Computational fluid dynamics modeling of post-liquefaction soil flow using the volume of fluid method[J]. Bulletin of Engineering Geology and the Environment, 2012, 71(2): 359-366
[8] Jafarian, Y., Ghorbani, A. & Ahmadi, O. Evaluating Liquefaction-Induced Lateral Deformation of Earth Slopes using Computational Fluid Dynamics (CFD)[C]. 15th World Conference on Earthquake Engineering, 2012, Lisbon, Portugal.
[9] Miao Yu, Huang Yu, Xu Qiang. Numerical Methods for Deformation Analysis of Liquefiable Soils[J]. Engineering Geology for Society and Territory, 2014, 4(1): 55-57
[10] 王志华, 周恩全, 陈国兴, 等. 循环荷载下饱和砂土固-液相变特征[J]. 岩土工程学报, 2012, 34(9): 1604-1610.
WANG Zhi-hua, ZHOU En-quan, CHEN Guo-xing, et al. Characteristics of solid-liquid phase change of saturated sand under cyclic loading[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(9): 1604-1610.
[11] 陈育民, 刘汉龙, 邵国建, 等. 砂土液化及液化后流动特性试验研究[J]. 岩土工程学报, 2009, 31(9): 1408-1413.
CHEN Yu-min, LIU Han-long, SHAO Guo-jian, et al. Laboratory tests on flow characteristics of liquefied and post-liquefied sand[J]. Chinese Journal of Geotechnical Engineering, 2009, 31(9): 1408-1413.
[12] (苏) 朗道(Ландау,Л.Д.), (苏) 栗弗席茨(Лифщиц,Е.М.)著,孔祥言等译.流体力学[M]. 高等教育出版社, 1990