Method of designing dam-reservoir water coupled dynamic model test on vibration table

Abstract

The invention relates to a method of designing a dam-reservoir water coupled dynamic model test on a vibration table, which belongs to the field of hydraulic structure engineering and model test study. A geometrical size of each part of a two-dimensional model dam section and a layout scheme for each related monitoring device are firstly designed; main physical and mechanical parameters of the model material are determined; the dam model is cast, and each test instrument is buried in advance according to the well-designed layout scheme; a water tank which simulates the reservoir is lifted to the upstream side of the model dam; a reservoir tail energy dissipation device is placed at one end, far away from the model dam, inside the water tank; and after the model dam and the water tank which simulates the reservoir are assembled and the test instruments are assembled and connected, a model dam seismic dynamic simulation test is begun. According to the method of the invention, the theory is simple and easy to understand, the construction process is simple, and hydrodynamic pressure borne by the upstream dam and influences on a dam dynamic response by the upstream reservoir water in the case of an earthquake can be accurately measured in a lab.

Description

technical field

[0001] The invention relates to a design method based on a dam body-reservoir water coupling dynamic model test on a shaking table, and belongs to the field of hydraulic structure engineering and model test research. Background technique

[0002] The dynamic interaction between the upstream reservoir water and the dam body under the earthquake has an important influence on the dynamic response of the dam body itself. The difficulties in conducting the dam body-reservoir water coupling seismic dynamic model test on the shaking table lie in various aspects: one is the selection of model materials; during the dynamic model test, the dam body model must be compared according to the similarity ratio according to the test requirements and the characteristics of the shaking table. Ruler to shrink the prototype dam body. While reducing the geometric size of the prototype dam body, the mechanical properties of the materials used to make the dam body model, such as st...

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