地下结构振动台试验模型箱应用现状

Status of Model Container Applications in Shaking Table Test for underground Structures

模型箱是地下结构振动台试验中的辅助装置,对模型地层与结构在模拟地震输入下的动力响应测试研究至关重要。调查了现有地下结构振动台模型试验所用模型箱的形式,给出了设计模型箱应满足的三个等效准则,依此分析各类模型箱的结构形式及其优缺点。着重讨论了刚性模型箱设计应关注的若干要点,为长隧道振动台试验模型箱设计提供理论准备。

The model container is an assistant device in the shaking tabte test lot u^u~ used in the studiesto simulatemodel layer and structure dynamic responses under Seismic input. This paper surveysthe existingmodel container typesused inunderground structures shaking table model tests. It summa- rized three equivalent criteria for design of model containers through analyzingadvantages and disadvantages of different structural types of model containers. The paper also discussed the key design points of rigid model containers, which provides a theoretical preparation for the model design of the long immersed tunnel~ shaking table test.