In this paper a new consolidation system named GSPS( geogrid stone pile system) is advanced, which is a generic term of the three treatments of geogrid stone piles, sand underlay and ribbed base.

Considering the fact that the creep properties of geogrids are fundamental and important factors on the long-term behavior of geogrid-reinforced earth structures, a series of comparative experimental tests of the creep properties of geogrids are conducted in the laboratory under different combinations of externally-applied load and environmental temperature.

Wind tunnel test on effect of controlling windand deposited sand of geogrid sand-barrier;

Improvement of Controlling Method for Preheating and Stretching Process of Geogrid;

Numerical simulation and field test at the cut to fill location of subgrade treated with geogrids;

Study on reinforced mechanism and laid parameters of steep slope of highway embankment reinforced with geogrids;

Study on using geogrids to reinforce embankment of expressway;

Field testing study on stresses of dry jet mixing combined with geogrids;

Theoretical analysis of pavement structure reinforced by geo-grid

The settlement distribution of graded broken stone transition section and geo-grid transition section under train loads has been obtained according to the field test results and theoretical analysis.

For the container yard surface layer of Huizhou QCT in Shenzhen, by adopting geo-grid instead of crushed stone cushion and improved cement stabling cushion which were usually used, the construction technology was simplified, the engineering quality was improved, and the engineering cost was cut down.