Influences of length of reinforcement strip on friction of the strip;

Influence of pullout test method and fill material density on friction between reinforcement strip and fill material;

Through practical engineering and design experience,the author discusses the principle,design method and construction technical requirement of soft foundation strengthened by reinforced composite sand-gravel cushion,and shows by practices that using geotechnical reinforced belt composite sand-gravel cushion to treat soft foundation is safe,reasonable and economical and is worthy to be popularized.

Combined with concrete project example,it introduces the designed structural style and calculated indexing of the reinforced earth-retaining wall,and discusses the construction method from the aspects of foundation construction,precasting and adjustment of face plate,lacing girdle laying etc,and generalizes the application dominance of the reinforced earth-retaining wall.