盾构法隧道模型试验中的相似关系

SIMILARITY FORMULAE OF MODEL TESTING IN ADVANCING SHIELD TUNNELS

盾构法是在软土中建造隧道常用的施工法.讨论其模型试验和实物之间的转换问题.根据Goodier理论建立相似关系,考虑了土体的黏弹塑性性质和大变形问题,包括推进压、推进速度、出土量、土体损失率、以及注浆量等施工参数对地层移动的影响.给出的公式可用于盾构法隧道的实验设计和数据分析.

The similarity formulae of model testing in advancing shield tunnels are proposed based on the Goodierian theory. Many practical factors such as the advancing pressure and speed, the soil pressure, the soil discharging and losing ratio, and the infused mud quantities are included in them. The viscosity-elasticityplasticity property as well as the large deformation of the soft soil are considered in the discussion. The formulae can be used to design the testing model and to process the testing data.