Application of FEM Strength Reduction Dynamic Analysis in the Seismic Design of Reinforced Earth-Retaining Wall with Geo-Grid

Abstract:

Due to the special mesh structure, geo-grid material can avoid local subsidence of filling material, reduce uneven settlement of soil mass to the largest degree and improve the whole stability of soil mass, so the reinforced earth-retaining wall with geo-grid is widely used in engineering. Meanwhile, researches on its dynamic characters are not enough and it is hard to judge the whole stability of reinforced earth-retaining wall under seismic condition. When unstable failure happens, the location of failure surface can hardly be identified. These disadvantages have seriously limited the development of this supporting method and cause unsafe potentials for engineering. Based on the FEM strength reduction dynamic analysis and combined with practical engineering, the paper conducts stability analysis on the reinforced earth-retaining wall of geo-grid under seismic condition and the research achievements provide a new thinking for the seismic design of reinforced earth-retaining wall with geo-grid.

• Periodical: Applied Mechanics and Materials (Volumes 580-583)
• Pages: 1419-1425
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.580-583.1419
• Online since: July 2014
• Authors: Xiao Song Tang, Ying Ren Zheng, Lai Jie
• Keywords: Dynamic Analysis, Fem Strength Reduction, Geo-Grid, Reinforced Earth-Retaining Wall, Stability Analysis

References

[1] TATSUOKA F, TATEYAMA M, KOSEKI J. Behavior of Geogrid-reinforced soil retaining walls during the Great Habshin-Awaji Earthquake [C]/ Proceedings of 1st International Symposium on Geotechnical Earthquake Engineering. 1995: 55-60.

[2] Leshchinsky D, Han. J. Geosynthetic reinforced multitiered walls [J]. Journal of Geotechnical and Geoenvironmental Engineering，ASCE，2004，130(12): 1225-1235.

DOI: 10.1061/(asce)1090-0241(2004)130:12(1225)

[3] LV Wen-liang, YAN Shu-wang, LIU Run. Application of Finite Element Method in Reinforced Soil Retaining Wall[J]. JOURNAL OF TIANJIN UNIVERSITY, 2002, 35(5): 596-600.

[4] GAO Jiang-ping, YU Mao-hong, HU Chang-shun, et al. Study on the distributive rule of the earth pressure and its coefficient of the reinforced earth wall[J]. Chinese Journal of Geotechnical Engineering, 2003, 25(5): 582-584.

[5] Seed H B, Whitman R V. Design of earth retaining structures for dynamic loads. In: ASCE Specialty Conference. Ithaca, 1970, 103-147.

[6] LIU Hua-bei. Analysis on seismic behavior of geogrid-reinforced retaining wall subjected to horizontal and vertical excitations[J]. Chinese Journal of Geotechnical Engineering, 2006, 28(5): 594-599.

[7] LING H I, LIU H, MOHRI Y. Parametric studies on the behavior of reinforced soil retaining walls under earthquake loading[J]. Journal of Engineering Mechanics, ASCE, 2005, 131(10): 1056–1065.

DOI: 10.1061/(asce)0733-9399(2005)131:10(1056)

[8] Yang Guolin，Wang Yonghe. MODEL TESTING AND DYNAMIC RESPOND ANALYSIS ON REINFORCED EARTH WALL UNDER REPEATED LOAD[J]. Chinese Journal of Rock Mechanics and Engineering, 2002, 21(10): 1541-1546.

[9] ZHENG Yingren，YE Hailin，HUANG Runqiu. Study on the seismic stability analysis of a slope [J]. JOURNAL OF EARTHQUAKE ENGINEERING AND ENGINEERING VIBRATION, 2010, 30(2): 173-180. ）.

[10] ZHENG Yingren，YE Hailin，HUANG Runqiu. Analysis and Discussion of Failure Mechanism and Fracture Surface of Slope under Earthquake [J]. Chinese Journal of Rock Mechanics and Engineering, 2009, 28(8): 1914-1723. ).

[11] ZHENG Y R, TANG X S, and ZHAO S Y, Strength reduction and step-loading finite element approaches in geotechnical engineerin, ournal of Rock Mechanics and Geotechnical Engineering, 2009, pp.21-30.

DOI: 10.3724/sp.j.1235.2009.00021

[12] ZHENG Yingren, and ZHAO Shangyi, Discussion on safety factors of slop and landslide engineering design, Chinese Journal of Rock Mechanics and Engineering, 2006, p.1937-(1940).