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动态离心模型试验可用来模拟具有多道支撑的深基坑开挖过程。在该试验中,通过分时排放规定高度的代土液体来模拟土体分层开挖,通过支撑杆对开挖面的连续墙进行适时支撑,以模拟基坑开挖到一定高度后的支撑施工,并通过模型中的传感器监测离心模型受力和变形情况。本文使用研制的深基坑开挖离心模拟试验装置,采用铝板制作地下连续墙,采用水玻璃作为代土液体,进行了多组重复试验,其结果表明,该离心试验能较好模拟真实深基坑开挖过程。
The dynamic centrifugal model test can be used to simulate deep excavation with multiple supports. In this experiment, the subsoil excavation of soil is modeled by the subsoil discharge of a predetermined height from the subsoil liquid, and the continuous wall of the excavation face is supported by the support rod in time to simulate the support after excavation to a certain height Construction, and through the model of the sensor to monitor centrifugal force and deformation of the model. In this paper, the developed deep foundation pit excavation centrifugal simulation test device, the use of aluminum to make the diaphragm wall, using water glass as the generation of liquid, conducted a number of groups of repeated tests, the results show that the centrifuge test can better simulate the real deep base Pit excavation process.