CN-224202874-U - Lamellar shear vibration table model box for simulating water-soil coupling dynamic response

CN224202874UCN 224202874 UCN224202874 UCN 224202874UCN-224202874-U

Abstract

The utility model discloses a layered shearing vibration table model box for simulating dynamic response of water and soil coupling, which relates to the technical field of civil engineering and comprises a bottom plate, wherein a plurality of layered frames are arranged on the bottom plate, the layered frames are sequentially and correspondingly connected from bottom to top and are arranged in a superposition mode to form a non-covered box structure, a plurality of limiting plates are uniformly arranged on the periphery of the non-covered box formed by the layered frames, a plurality of symmetrically distributed shearing sliding units are arranged on two sides of the limiting plates, the shearing sliding units are uniformly arranged between adjacent layered frames, a water inlet pipe and a water outlet pipe are arranged above the non-covered box formed by the layered frames, and flow control valves are arranged on the water inlet pipe and the water outlet pipe and are connected with an external water pump.

Inventors

LIU HENG
XI PENG
Yan Xihao
PENG XIAOBO
ZHU WENZHUO
XU MINGJIE
WANG ZHENGWEI
GUO LEI
ZHANG YI

Assignees

南京工业大学
江苏省地震局

Dates

Publication Date: 20260505
Application Date: 20250327

Claims (6)

1. The utility model box is characterized by comprising a bottom plate, wherein a plurality of lamellar frames are arranged on the bottom plate, the lamellar frames are sequentially and correspondingly connected from bottom to top and are arranged to form a non-covered box structure in a superposition mode, a plurality of limiting plates are uniformly arranged on the periphery of the non-covered box formed by the lamellar frames, a plurality of symmetrically distributed shearing sliding units are arranged on two sides of each limiting plate, the shearing sliding units are uniformly arranged between the adjacent lamellar frames, a water inlet pipe and a water outlet pipe are arranged above the non-covered box formed by the lamellar frames, and flow control valves are arranged on the water inlet pipe and the water outlet pipe and are connected with an external water pump.
2. The model box for the laminar shear vibration table simulating dynamic response of water and soil coupling is characterized in that waterproof films are arranged on the inner surface of a non-covered box body formed by the laminar frame, a soil body filling area and a water body filling area are sequentially arranged inside the laminar frame from bottom to top, a plurality of strain sensors are uniformly arranged at positions, corresponding to the soil body filling area, inside the laminar frame, a plurality of acceleration sensors are uniformly arranged at positions, corresponding to the soil body filling area, outside the laminar frame, and the acceleration sensors are arranged at one corner of the outer side of the bottom plate.
3. The model box of the layered shear vibration table simulating dynamic response of water and soil coupling according to claim 2, wherein the waterproof film is arranged between the soil body filling area and the water body filling area, and a plurality of pressure sensors are arranged inside the layered frame at one side of the water body filling area.
4. A layered shear vibration table model box simulating a dynamic response to soil and water coupling according to claim 3, wherein the shear slide units are arranged in a linear roller pin row.
5. A layered shear vibration table model box simulating dynamic response of water and soil coupling according to claim 4, wherein water seepage prevention measures are provided at the inner connection part between the layered frames and at the connection part between the shear sliding unit and the layered frames.
6. The layered shear vibration table model box simulating dynamic response of water and soil coupling according to claim 5, wherein the connection mode of the bending parts of the waterproof films is set to be sealing rubber strips, and the waterproof films are set to be HDPE high-density polyethylene films.

Description

Lamellar shear vibration table model box for simulating water-soil coupling dynamic response Technical Field The utility model relates to the technical field of civil engineering, in particular to a layered shear vibration table model box for simulating water-soil coupling dynamic response. Background In the field of geotechnical engineering, the vibration table test is an important means for researching the mechanical behavior of a soil body under the action of dynamic loads such as earthquakes, the vibration table test can realize the input of earthquake waves in various forms, can simulate the whole earthquake process of different earthquake levels for a plurality of times, is called as the most direct indoor test for researching the structural earthquake response rule and the failure mechanism, can restore the earthquake process more truly, and is required to ensure that the performance of the model soil body in a model box in a limited space under earthquake excitation is consistent with that of model soil in a semi-infinite space, and the design and manufacture of the model box directly influence the success and failure of the vibration table test. The conventional vibrating table model boxes have limitations in simulating some special site conditions, for example, in simulating sites involving water-soil interaction, such as coastal areas, river delta, and the like, the influence of water on soil and the change of mechanical properties of the soil under the water-soil coupling effect need to be considered, however, most of the conventional vibrating table model boxes lack effective water simulation devices and cannot accurately reproduce the complex site conditions. The layered shearing model box has certain advantages in the aspect of simulating the shearing deformation characteristic of soil bodies, but has not been well designed in the aspect of combining water body simulation, so that the vibrating table model box which can embody the layered shearing characteristic and simulate the dynamic response of water-soil coupling is necessary to be developed so as to better simulate the complex field conditions in actual engineering and provide a more accurate experimental platform for related research. Disclosure of utility model The utility model aims to provide a layered shear vibration table model box for simulating water-soil coupling dynamic response, which can simulate a site related to water-soil interaction and simulate and explore the influence of a water body on a soil body and the change of mechanical properties of the soil body under the water-soil coupling effect. In order to achieve the above purpose, the utility model provides a layered shear vibration table model box for simulating dynamic response of water and soil coupling, which comprises a bottom plate, wherein a plurality of layered frames are arranged on the bottom plate, the layered frames are sequentially and correspondingly connected from bottom to top and are arranged in a superposition mode to form a non-covered box structure, a plurality of limiting plates are uniformly arranged around the non-covered box formed by the layered frames, a plurality of symmetrically distributed shear sliding units are arranged on two sides of each limiting plate, the shear sliding units are uniformly arranged between the adjacent layered frames, a water inlet pipe and a water outlet pipe are arranged above the non-covered box formed by the layered frames, and flow control valves are arranged on the water inlet pipe and the water outlet pipe and are connected with an external water pump. Preferably, the inner surface of the uncovered box body formed by the layered frame is provided with a waterproof film, the inside of the layered frame is sequentially provided with a soil body filling area and a water body filling area from bottom to top, the inside of the layered frame is uniformly provided with a plurality of strain sensors corresponding to the position of the soil body filling area, the outside of the layered frame is uniformly provided with a plurality of acceleration sensors corresponding to the position of the soil body filling area, and one corner of the outer side of the bottom plate is provided with the acceleration sensors. Preferably, the waterproof film is arranged between the soil body filling area and the water body filling area, and a plurality of pressure sensors are arranged inside the layered frame at one side of the water body filling area. Preferably, the shearing sliding unit is arranged as a linear roller pin row. Preferably, the inner connection between the layered frames and the connection between the shearing sliding unit and the layered frames are provided with water seepage prevention measures. Preferably, the connection mode of the bending part of the waterproof film is set to be connected by a sealing rubber strip, and the waterproof film is set to be an HDPE high-density polyethylene film. Therefore, the layered she