›› 2006, Vol. 27 ›› Issue (6): 857-863.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

FEM based numerical analysis of stresses and deformations of geogrid-reinforced earth retaining walls

LUAN Mao-tian 1, 2, XIAO Cheng-zhi 1, 2, 3, YANG Qing1, 2, LI Jing-feng1, 4, SHANGGUAN Yun-long5, PEI Jian-jun6   

  1. 1. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China; 2. Institute of Geotechnical Engineering, School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian 116024, China; 3. School of Civil Engineering, Hebei University of Technology, Tianjin 300310, China; 4. Dalian Academy of Reconnaissance and Mapping, Dalian 116021, China; 5. Communications Scientific Research Institute of Jilin Province, Changchun 130022, China; 6. Estong Geogrids Co., Ltd, Qingdao 266111, China
  • Received:2005-08-15 Online:2006-06-10 Published:2013-11-14

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Abstract: The geogrid-reinforced earth retailing walls have been widely applied to geotechnical reinforcement constructions. A viscoelasto-plastic model is employed to consider the rheological properties of backfills and foundation soils while the empirical nonlinear viscoelastic model proposed by the authors is used to take the creep behaviour of geogrids into account. The numerical analysis procedure based on finite element method is developed for evaluation of stresses and deformations of geogrid-reinforced earth retaining walls under long-term loading. The comparative computations are conducted to examine the effects of construction process, geogrid length and spacing on long-term performance of geogrid-reinforced earth retaining walls. It is shown that the filling process have a considerable influence on the lateral displacements of panel, pullout forces and strains of geogrid and horizontal and vertical deformations of foundation The geogrid used for reinforcement will induce the redistribution of stresses in backfill. Both rheological effect of soils and creep effect of geogrid seem disappear after a certain period.

Key words: geogrids, reinforced earth retaining wall, creep, viscoelasto-plasticity, finite elements

CLC Number: 

  • O 241.82 T 114
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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