CN219625063U - Model test device for simulating influence of aircraft sliding on pile-net composite foundation settlement - Google Patents
Model test device for simulating influence of aircraft sliding on pile-net composite foundation settlement Download PDFInfo
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- CN219625063U CN219625063U CN202320848249.2U CN202320848249U CN219625063U CN 219625063 U CN219625063 U CN 219625063U CN 202320848249 U CN202320848249 U CN 202320848249U CN 219625063 U CN219625063 U CN 219625063U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model relates to the technical field of foundation treatment and model test, and discloses a model test device for simulating the influence of airplane sliding on pile-net composite foundation settlement. The utility model has simple structure and strong practicability, provides a simulation and monitoring mode, utilizes the model soil layer, the model piles and the model pavement in the model box to simulate the pavement structure layer and the pile net composite foundation, utilizes the electric servo loading device to simulate the dynamic load generated when the aircraft slides, processes the monitoring result through a computer, greatly saves manpower and material resources, improves the difficulty of on-site difficult monitoring and guides the actual engineering.
Description
Technical Field
The utility model relates to the technical field of foundation treatment and model test, in particular to a model test device for simulating the influence of airplane sliding on pile-net composite foundation settlement.
Background
The net composite foundation is a soft soil foundation treatment mode with small settlement deformation, short construction period and high stability, and is widely applied to the construction of traffic and transportation infrastructures in China. In eastern and southern coastal areas with higher economic development level and large-area soft soil layers, the foundation treatment of high-speed rail and highways usually adopts a pile-net composite foundation form, so that the driving comfort level can be greatly improved, the roadbed settlement, especially uneven settlement, can be greatly controlled, the pavement cracking can be further reduced, the influence of factors such as pile spacing, filling layer thickness and the like on the bearing capacity of the pile-net composite foundation under the static load effect is greatly focused, and the influence research on dynamic load is less. As the foundation treatment mode is gradually applied to airports, due to the specificity of airplane load compared with general traffic load, the characteristics of large tire pressure, high sliding speed, deep load transmission depth and the like are achieved, and the long-term settlement characteristics of the pile-net composite foundation under the action of airplane sliding load are required to be researched, so that the design model test device is used for observing the development trend and influence of long-term settlement of the pile-net composite foundation under the action of airplane dynamic load.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides a model test device for simulating the influence of the aircraft sliding on the settlement of the pile-net composite foundation, which utilizes a model soil layer, a model pile and a model pavement in a model box to simulate a pavement structure layer and a pile-net composite foundation, utilizes an electric servo loading device to simulate the dynamic load generated when the aircraft slides, processes the monitoring result through a computer, greatly saves manpower and material resources, improves the difficulty of being difficult to monitor in the field and guides the actual engineering.
The technical aim of the utility model is realized by the following technical scheme: a model test device for simulating the influence of aircraft sliding on pile-net composite foundation settlement comprises a load loading device, a model box and a data acquisition system;
the load loading device comprises a reaction frame and an electric servo device, the reaction frame comprises two vertical rods and a lifting cross beam arranged between the two vertical rods, the electric servo device is arranged at the bottom of the lifting cross beam, and the electric servo device can move along the length direction of the lifting cross beam; the bottom of the electric servo device is provided with an analog probe;
the model box is sequentially filled with a model pavement, a model soil layer and model piles from top to bottom;
the data acquisition system comprises a computer and a plurality of monitoring sensors, the monitoring sensors are arranged on the model pavement, the model soil layer and the model pile, and the computer is electrically connected with the monitoring sensors.
Further, both sides of the model box are provided with drainage mechanisms which are communicated with the inside of the model box.
Further, an observation area is arranged on one side face of the model box, and transparent glass materials are adopted for the observation area.
In summary, the utility model has the following beneficial effects: the utility model provides a new simulation and monitoring mode, which utilizes a simulated pavement structural layer such as a simulated soil layer and a pile net composite foundation in a model box, utilizes an electric servo loading device to simulate the generation of dynamic load when an aircraft slides, processes a monitoring result through a computer, greatly saves manpower and material resources, improves the difficulty of on-site difficult monitoring and guides actual engineering.
Drawings
FIG. 1 is a schematic block diagram of a model test device for simulating the influence of aircraft taxiing on pile-net composite foundation settlement in an embodiment of the utility model;
FIG. 2 is a front view of a model test apparatus for simulating the effect of aircraft taxiing on pile-net composite foundation settlement in an embodiment of the utility model;
FIG. 3 is a block diagram of a right side view of a model test apparatus for simulating the effect of aircraft taxiing on pile-net composite foundation settlement in an embodiment of the utility model;
in the figure: 1. a model box; 2. a vertical rod; 3. lifting the cross beam; 4. an electric servo device; 5. simulating a probe; 6. a model tread; 7. a model soil layer; 8. model piles; 9. monitoring a sensor; 10. a drainage mechanism; 11. an observation area.
Detailed Description
The utility model is described in further detail below with reference to fig. 1-3.
Examples: the model test device for simulating the influence of the aircraft sliding on the pile network composite foundation settlement is shown in figures 1 to 3 and comprises a load loading device, a model box 1 and a data acquisition system;
the load loading device comprises a reaction frame and an electric servo device 4, wherein the reaction frame comprises two vertical rods 2 and a lifting cross beam 3 arranged between the two vertical rods 2, lifting of the lifting cross beam 3 is driven by a lifting motor, the bottom of the lifting cross beam 3 is provided with the electric servo device 4, and the electric servo device 4 can be driven by the servo motor to move along the length direction of the lifting cross beam 3; the bottom of the electric servo device 4 is provided with an analog probe 5;
the model box 1 is internally filled with a model pavement 6, a model soil layer 7 and a model pile 8 from top to bottom in sequence;
the data acquisition system comprises a computer and a plurality of monitoring sensors 9, the monitoring sensors 9 are arranged in a plurality, the monitoring sensors 9 are respectively arranged on the model pavement 6, the model soil layer 7 and the model piles 8, and the computer is electrically connected with the monitoring sensors 9.
The monitoring sensor 9 consists of monitoring devices such as a related strain gauge, a pressure box and the like, and the monitoring sensor 9 is placed at the corresponding positions of the monitoring objects such as pile bodies, soil among piles and the like before the test starts. In the test, strain gauges distributed along the pile body are used for measuring pile body responses before and after dynamic loading, pile body strain is measured at different depth positions, and dynamic strain amplitude and load influence depth after the dynamic loading of an airplane are analyzed; measuring the soil arch height before and after the dynamic load action by using a soil pressure box arranged in the filling layer, and analyzing the change rule of the soil arch effect; and measuring and analyzing the load influence depth of the aircraft after the dynamic load action by using a soil pressure box arranged along the depth in the soft soil layer. After the electric servo device 4 starts to load, the corresponding data are transmitted to a computer for processing and analysis.
The computer is electrically connected with the electric servo device 4 and the reaction frame, and can control the lifting height of the lifting cross beam 3 and the moving distance of the servo electric device.
The two sides of the model box 1 are respectively provided with a drainage mechanism 10, the drainage mechanisms 10 are communicated with the inside of the model box 1, and drain water from the soft soil layer in the model soil layer 7 in the box before the test starts, and drain water from the soil for consolidation; an observation area 11 is arranged on one side surface of the model box 1, and the observation area 11 is made of transparent glass, so that the observation of test personnel is facilitated.
Working principle: before the test starts, soft soil layer preparation in the model soil layer 7 is completed in the model box 1, and model piles 8 are inserted for standing simulation piles and soft soil foundations; arranging soil pressure boxes at proper positions along different depths, arranging monitoring sensors 9 such as strain gauges and the like to sense mechanical parameters such as pressure, displacement and the like, paving geogrids, and completing filling simulation of an upper pavement structure of a filling layer and a model pavement 6 in an upper model soil layer 7; the method comprises the following steps of preparing for finishing the preparation, placing the simulation probe 5 at a designated position to simulate an aircraft tire by adjusting the lifting beam 3 and the horizontally moving electric servo device 4, connecting the monitoring sensor 9 with a computer, loading the road surface in a small amplitude before the test is started, observing the working state of the monitoring sensor 9 by the computer, setting the loading mode of the electric servo device 4 to apply the dynamic load of the aircraft according to the corresponding test requirement after the normal working state is determined, and transmitting a signal to the computer for receiving by the monitoring sensor 9 through sensing the upper dynamic load.
The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and modifications to the present embodiment, which may not creatively contribute to the present utility model as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present utility model.
Claims (3)
1. The model test device for simulating the influence of the aircraft sliding on the pile-net composite foundation settlement is characterized by comprising a load loading device, a model box (1) and a data acquisition system;
the load loading device comprises a reaction frame and an electric servo device (4), wherein the reaction frame comprises two vertical rods (2) and a lifting cross beam (3) arranged between the two vertical rods (2), the electric servo device (4) is arranged at the bottom of the lifting cross beam (3), and the electric servo device (4) can move along the length direction of the lifting cross beam (3); the bottom of the electric servo device (4) is provided with an analog probe (5);
the model box (1) is internally filled with a model pavement (6), a model soil layer (7) and a model pile (8) from top to bottom in sequence;
the data acquisition system comprises a computer and monitoring sensors (9), wherein the monitoring sensors (9) are arranged in a plurality, the monitoring sensors (9) are respectively arranged on a model pavement (6), a model soil layer (7) and a model pile (8), and the computer is electrically connected with the monitoring sensors (9).
2. The model test device for simulating the influence of aircraft taxiing on pile-net composite foundation settlement according to claim 1, wherein drainage mechanisms (10) are arranged on two sides of the model box (1), and the drainage mechanisms (10) are communicated with the inside of the model box (1).
3. The model test device for simulating the influence of aircraft taxiing on pile-net composite foundation settlement according to claim 1, wherein an observation area (11) is arranged on one side surface of the model box (1), and the observation area (11) is made of transparent glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320848249.2U CN219625063U (en) | 2023-04-17 | 2023-04-17 | Model test device for simulating influence of aircraft sliding on pile-net composite foundation settlement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320848249.2U CN219625063U (en) | 2023-04-17 | 2023-04-17 | Model test device for simulating influence of aircraft sliding on pile-net composite foundation settlement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219625063U true CN219625063U (en) | 2023-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320848249.2U Active CN219625063U (en) | 2023-04-17 | 2023-04-17 | Model test device for simulating influence of aircraft sliding on pile-net composite foundation settlement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219625063U (en) |
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2023
- 2023-04-17 CN CN202320848249.2U patent/CN219625063U/en active Active
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