双面加筋土高挡墙的离心模型试验研究

Centrifugal Modelling of High Double Face Reinforced Earth Retaining Wall

选用双面加筋土材料 ,结合黄土地区填土的特点 ,运用离心模拟技术 ,研究加筋土高挡墙的性态。通过在离心机上进行 30～ 6 2 5m的双面加筋土高挡墙的试验 ,表明填土的压实度直接影响挡墙的高度 ,当填土的压实度为0 90时 ,无论挡墙设置错台与否 ,皆可达到 5 0m以上高度 ;对于压实度为 0 80时 ,当设错台时 ,挡墙高度可达 33m ,当不设错台时 ,挡墙高度只为 30m。

At first we selected the reinforcement and earth materials in accordance with the properties of regional loess.The performance of highrise reinforced retaining walls is studied by using direct shear tests and centrifugal model tests.Through a series of tests on 30～62 5 m double face reinforced earth retaining walls,it denotes the degree of compaction of filling earth affects directly the safe height of retaining walls.When the compaction factor is 0 90, the height of the retaining wall with steps or not is taller than 50 m. When the compaction factor is 0 80, the height of the retaining wall with steps is 33 m,and that without steps is only 30 m.