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The invention discloses a pipeline dynamic response simulation device under the action of vehicle load coupling foundation differential settlement, which is characterized by comprising a model tank, a load simulation assembly, a settlement simulation assembly, a data monitoring assembly, a soft soil sample and a pipeline model, the load simulation assembly comprises an electro-hydraulic servo high-cycle electric cylinder and a vehicle model, a soft soil sample is laid in the model groove, the pipeline model is embedded in the soft soil sample, the data monitoring assembly is distributed in the pipeline model and in the surrounding soil sample, the electro-hydraulic servo high-circulation electric cylinder is connected with the vehicle model and controls the vehicle model to reciprocate, and the settlement simulation assembly comprises a settlement box and a jack. The settlement box is arranged in the model groove and located below the soft soil sample, and the jack is arranged below the settlement box and controls the settlement box to ascend and descend. According to the device, cyclic load and differential settlement can be simulated through the load simulation assembly and the settlement simulation assembly, and more diversified and accurate test data can be obtained.

This utility model discloses an eco-board based on single mortise and tenon joint. The eco-board includes sub-wood strips and mother-wood strips, and the transverse direction of the eco-board is spliced ​​using mortise and tenon joints, while the longitudinal direction is spliced ​​using toothed joints. Its advantages are as follows: Compared with double mortise and tenon joints, the eco-board of this utility model, using a single mortise and tenon joint, has higher process efficiency and better economy. The processing time for single mortise and tenon joints can be reduced by 30%-50%, making it particularly suitable for mass production and requiring lower equipment precision. Secondly, it reduces the grooving process, lowering labor and tooling costs. Furthermore, the single mortise and tenon joint reduces material removal, making it suitable for scenarios requiring weight reduction (such as hanging cabinets and movable furniture). Moreover, the single mortise and tenon joint is particularly suitable for thin boards, requiring no larger board thickness for support, and can be used stably in eco-boards with a thickness of less than 18mm, thus broadening its application range.