An open type model box means that one or more sides of the box especially the top of the box are opened or can be opened in order to facilitate the simulated boundary conditions such as slope, foundation pits, tunnels, underground spaces and specimen such as stake, subgrade, or culvert etc. Usually, the top surface, sometime including the sides of the model box is used to arrange the loading actuators in order to apply ground stress and external load to the specimen.
The loading frame is arranged to surround the model box to balance the reaction load of the actuators which are used to simulate boundary conditions and apply force on the specimen.
Technical Specifications