Abstract：Research purposes: This paper researches the engineering technology for the geo-grids how to decrease the earth pressure anted on an embankment retaining structure and discusses the theoretical calculation method.
Research methods: lt is assumed from the forces polygon that the geo-grids develop their stretching strength at the same time and then a theoretical analysis method is used to analyze the engineering technology for the geo-grids how to decrease the earth pressure acted on an embankment retaining structure
Research results: The theoretical analysis has acquired a calculation method for the geo-grids how to decrease the earth pressure acted on an embankment retaining structure.
Research conclusions: The method put forward in this paper is simple and practical. It carp Le used for calculating the active breaking angle and the total active earth pressure on the embankment pile-slab wall with the geo-grids. For a high pile-slab wall，the earth pressure can be decreased by means of each layer of the fillings paved with each layer of geo-grids，then the pile section size and the slab thickness can he decreased. But the fillings shall be hard such as rock with less weathering; the geo-grids shall be positioned at the middle-upper below the fillings, the more details must be determined according to its stretching strength and the friction resistance provided by the earth fillings within the breaking surface. Finally it is suggested chat a further research must he performed of their arrangement, layer-distance and deformation characteristics etc.，to make the theory more conforming to match the practice
蒋楚生. 土工格栅减小路堤支挡结构土压力的理论分析[J]. 铁道工程学报, 2007, 24(8): 30-34.
J1ANG Chu-sheng. A Theoretical Analysis of Geo-grids How to Decrease the Earth Pressure Acted on an Embankment Retaining Structure. 铁道工程学报, 2007, 24(8): 30-34.
2007, Vol. 24 
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