弾性FEMによる軽量地盤の壁面土圧解析
EARTH PRESSURES OF LIGHT WEIGHT GEO-MATERIAL AGAINST RETAINING WALLS BY ELASTIC FINITE ELEMENT ANALYSIS

Satoshi MURAKAMI, Kazuya YASUHARA, Katsuo OHNOBU
2002 Geosynthetics Engineering Journal  
One of the mechanical properties of such lightweight geo-materials in geosynthetics is that Poisson's ratio is very small, compared with natural geo-materials. In this study, the effect of the Poisson's ratio on earth pressure reduction are investigated, particularly in the case that the lightweight geo-material is applied as the back fill material of a retaining wall structure by using the elastic finite element analysis. The results from FE analysis indicate: (1) Earth pressures against the
more » ... sures against the retaining walls are reduced with decreasing the Poisson's ratio of the lightweight geo-material. (2) The larger earth pressure is developed at the region of the higher position of the retaining wall. (3) The earth pressure is strongly influenced by the boundary condition adjacent around the back fill. Therefore, the boundary condition needs to be taken into consideration in the design of wall structures.
doi:10.5030/jcigsjournal.17.117 fatcat:as7yec6gpjccbl76ofi4pboyee