CN215339259U - Tunnel three-dimensional space stress state research device - Google Patents
Tunnel three-dimensional space stress state research device Download PDFInfo
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- CN215339259U CN215339259U CN202121206555.3U CN202121206555U CN215339259U CN 215339259 U CN215339259 U CN 215339259U CN 202121206555 U CN202121206555 U CN 202121206555U CN 215339259 U CN215339259 U CN 215339259U
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Abstract
The utility model discloses a device for researching the stress state of a three-dimensional space of a tunnel, which comprises a tunnel model placing bottom plate, wherein a frame is fixedly arranged on the upper end surface of the tunnel model placing bottom plate, the tunnel model is arranged in the frame and placed on the upper end surface of the tunnel model bottom plate, a first pressure device is arranged at the top of the frame and is used for applying vertical downward pressure on the top of the tunnel model, second pressure devices are arranged at two sides of the frame and are used for applying longitudinal pressure on two sides of the tunnel model, third driving devices are arranged at two sides of the frame and are used for driving the second pressure devices to vertically slide, and a data acquisition instrument is arranged in the tunnel model and is used for acquiring various data after the tunnel model is stressed. The utility model is convenient for simulating the actual situation, and applies different pressures to different points on two sides of the tunnel model for data acquisition and research.
Description
Technical Field
The utility model relates to the technical field of tunnel traffic simulation tests, in particular to a device for researching the stress state of a tunnel three-dimensional space.
Background
With the development of Chinese economy and the progress of tunnel engineering technology, various tunnel engineering structures are increasing day by day. Because the rock soil in which the tunnel is located has complex occurrence conditions, sensitive surrounding environment and harsh use conditions, the structure per se has continuous performance degradation under the long-term action of multiple factors, and the phenomena of bottom structure damage, slurry turning, mud pumping and the like appear in part of the tunnels, thereby seriously influencing the operation safety of the tunnels. The tunnel bottom structure test is taken as a main means for researching the stress characteristics, the performance evolution rule and the failure mode of the tunnel bottom structure, and the importance of the tunnel bottom structure test is self-evident.
In recent years, a series of test devices have been developed by researchers at home and abroad for tunnel structures. The tunnel lining component high-temperature mechanical property test system disclosed as Chinese utility model publication No. CN101131343A is mainly used for simulating the fire characteristics of a tunnel, the thermal boundary characteristics and the stress characteristics of a tunnel lining structure system and researching the high-temperature mechanical property of the tunnel lining structure system. The utility model discloses a three-dimensional adjustable geotechnical engineering physical simulation multifunctional test device of model two-dimentional that chinese utility model discloses a CN101042390A discloses provides one kind and can follow the two-dimensional direction and also can follow the three-dimensional direction and exert pressure in order to test soil mechanical properties's test device to test soil. The geotechnical engineering multifunctional simulation test device developed by the general reference engineering research institute III can be used for carrying out plane geomechanical model tests on the underground chambers, the cave groups, the side slopes and the foundation pits. However, these testing devices are used to study the stress state of the tunnel from the perspective of the overall structure of the tunnel, but in practice, the stress on the two sides of the tunnel is not uniform, i.e., the stress on each place is different, and therefore a research device is needed to solve this problem.
SUMMERY OF THE UTILITY MODEL
Therefore, in order to solve the above-mentioned deficiencies, the utility model herein provides a device for studying three-dimensional space stress state of a tunnel, which is convenient for simulating actual conditions, applying pressures of different magnitudes to different points on two sides of a tunnel model, and collecting and studying data.
The utility model is realized in such a way that a device for researching the stress state of the three-dimensional space of the tunnel is constructed, and the device comprises a tunnel model placing bottom plate;
the device also comprises a frame which is fixedly arranged on the upper end surface of the tunnel model placing bottom plate;
the device also comprises a tunnel model which is arranged in the frame and is placed on the upper end surface of the tunnel model bottom plate;
the device also comprises a first pressure device which is arranged at the top of the frame and is used for applying vertical downward pressure to the top of the tunnel model;
the device also comprises second pressure devices which are arranged at two sides of the frame and act on the two sides of the tunnel model to apply longitudinal pressure;
the device also comprises a third driving device which is arranged at two sides of the frame; the third driving device drives the second pressure device to vertically slide;
the device also comprises a data acquisition instrument which is arranged in the tunnel model and is used for acquiring various data after the tunnel model is stressed.
Further, the method comprises the following steps of; first pressure device includes first drive arrangement, first increased pressure board and first pressure sensor, first drive arrangement fixed mounting in the frame top, first increased pressure board set up in tunnel model top keeps being connected with first drive arrangement, first pressure sensor sets up in first increased pressure board and first drive arrangement junction, and the aim at of this setting, the first increased pressure board of first drive arrangement drive are pushed down, apply vertical decurrent pressure to the tunnel model, and first pressure sensor turns into the pressure in the signal of telecommunication exports the controller, and the controller handles the analysis to it, until pressurize to predetermineeing the pressure value after, the first drive arrangement of controller control stops the pressurization, is convenient for control the atress size.
Further, the method comprises the following steps of; the second pressure device comprises a second driving device, a second pressurizing plate and a second pressure sensor, the second driving device is arranged on two sides of the frame, the second pressurizing plate is arranged on two sides of the tunnel model and is kept connected with the output end of the second driving device, the second pressure sensor is arranged at the joint of the second pressurizing plate and the second driving device, the second driving device drives the second pressurizing plate to press downwards, longitudinal pressure is applied to the tunnel model, the second pressure sensor converts the pressure into an electric signal to be output to the controller, the controller processes and analyzes the electric signal, and the controller controls the second driving device to stop pressurizing until the preset pressure value is pressurized, so that the stress size can be controlled conveniently.
Further, the method comprises the following steps of; the third drive arrangement output is connected with the mounting panel, mounting panel and frame side sliding connection, second pressure device installs in the mounting panel side, and the aim at of this setting, third drive arrangement drive mounting panel slide, drive the motion of second pressure device, can change the stress point of tunnel model side.
Further, the method comprises the following steps of; the utility model discloses a frame, including mounting panel, guide bar and guide bar, the mounting panel is provided with the guide bar with the frame junction, guide bar fixed mounting is in the frame both sides, mounting panel and guide bar sliding connection, the aim at of this setting leads the motion of second pressure device, improves the motion precision.
The utility model has the following advantages: according to the utility model, the second pressure device applies vertical downward pressure to the tunnel model, the third driving device drives the second pressure device to vertically slide, the second pressure device is distributed at different positions on the side surface of the tunnel model, the second pressure device applies pressure to two sides of the tunnel model, the actual situation can be simulated, different pressures are applied to all stress points of the tunnel model, and the stress situation of the data acquisition instrument in the tunnel model is fed back to the controller in a data form.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a side view of FIG. 1;
FIG. 4 is a top view of FIG. 1;
FIG. 5 is a cross-sectional view A-A of FIG. 3;
fig. 6 is a sectional view B-B in fig. 5.
Wherein: 1. a frame; 2. a tunnel model; 3. a tunnel model placing bottom plate; 4. a first driving device; 5. a second driving device; 6. mounting a plate; 7. a data acquisition instrument; 8. a third driving device; 9. a guide bar; 10. a first pressing plate; 11. a first pressure sensor; 12. a second pressure sensor; 13. a second pressing plate.
Detailed Description
The present invention will be described in detail with reference to fig. 1 to 6, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The utility model provides a device for researching the stress state of a three-dimensional space of a tunnel by improvement, which comprises a tunnel model placing bottom plate 3, as shown in figures 1-6;
the frame 1 is fixedly arranged on the upper end face of the tunnel model placing bottom plate 3;
the tunnel model 2 is arranged in the frame 1 and is placed on the upper end face of the tunnel model bottom plate 3;
the first pressure device is arranged at the top of the frame 1 and is used for applying vertical downward pressure to the top of the tunnel model 2;
the second pressure devices are arranged on two sides of the frame 2 and act on longitudinal pressure applied to two sides of the tunnel model 2;
the third driving device 8 drives the second pressure device to vertically slide;
and the data acquisition instrument 7 is arranged in the tunnel model 2 and is used for acquiring various data after the tunnel model 2 is stressed.
During implementation, the second pressure device applies vertical downward pressure to the tunnel model 2, the third driving device 8 drives the second pressure device to vertically slide, the second pressure device is distributed at different positions on the side surface of the tunnel model 2, the second pressure device applies pressure to two sides of the tunnel model, actual conditions can be simulated, pressure with different sizes is applied to all stress points of the tunnel model, and the data acquisition instrument 7 feeds back the stress conditions inside the tunnel model to the controller in a data form.
In this embodiment, as shown in fig. 5, the first pressure device includes a first driving device 4, a first pressure plate 10 and a first pressure sensor 11, the first driving device 4 is fixedly installed on the top of the frame 1, the first pressure plate 10 is disposed above the tunnel model 2 and keeps connected with the first driving device 4, and the first pressure sensor 11 is disposed at the joint of the first pressure plate 10 and the first driving device 4, so that the first driving device 4 drives the first pressure plate 10 to press down to apply a vertically downward pressure to the tunnel model, the first pressure sensor 11 converts the pressure into an electrical signal and outputs the electrical signal to the controller, and the controller processes and analyzes the electrical signal until the pressure reaches a preset pressure value, and controls the first driving device 4 to stop pressurizing so as to control the magnitude of the force applied.
In this embodiment, as shown in fig. 6, the second pressure device includes a second driving device 5, a second pressure plate 13 and a second pressure sensor 12, the second driving device 5 is disposed on two sides of the frame 1, the second pressure plate 13 is disposed on two sides of the tunnel model 2, and is connected to an output end of the second driving device 5, the second pressure sensor 12 is disposed at a connection position of the second pressure plate 13 and the second driving device 5, and this setting aims at that the second driving device 5 drives the second pressure plate 13 to press down to apply longitudinal pressure to the tunnel model, the second pressure sensor 12 converts the pressure into an electrical signal and outputs the electrical signal to the controller, and the controller processes and analyzes the electrical signal, until the pressure reaches a preset pressure value, the controller controls the second driving device 5 to stop pressurizing, so as to control the magnitude of the force applied.
In this embodiment, as shown in fig. 2, the output end of the third driving device 8 is connected with the mounting plate 6, the mounting plate 6 is connected with the side surface of the frame 1 in a sliding manner, and the second pressure device is mounted on the side surface of the mounting plate 6, so that the third driving device 8 drives the mounting plate 6 to slide, drives the second pressure device to move, and can change the stress point on the side surface of the tunnel model 2.
In this embodiment, as shown in fig. 2, the connecting portion of the mounting plate 6 and the frame 1 is provided with a guide rod 9, the guide rod 9 is fixedly installed on both sides of the frame 1, and the mounting plate 6 is slidably connected with the guide rod 9, so as to guide the movement of the second pressure device and improve the movement precision.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. A device for researching the stress state of a three-dimensional space of a tunnel is characterized in that; the device comprises a tunnel model placing bottom plate (3);
the device also comprises a frame (1) which is fixedly arranged on the upper end surface of the tunnel model placing bottom plate (3);
the device also comprises a tunnel model (2) which is arranged in the frame (1) and is placed on the upper end surface of the tunnel model placing bottom plate (3);
the device also comprises a first pressure device which is arranged at the top of the frame (1) and is used for applying vertical downward pressure to the top of the tunnel model (2);
the device also comprises second pressure devices which are arranged at two sides of the frame (1) and act on applying longitudinal pressure to two sides of the tunnel model (2);
the device also comprises a third driving device (8) which is arranged at two sides of the frame (1); the third driving device (8) drives the second pressure device to vertically slide;
the device also comprises a data acquisition instrument (7) which is arranged in the tunnel model (2) and is used for acquiring various data after the tunnel model (2) is stressed.
2. The device for researching the stress state of the three-dimensional space of the tunnel according to claim 1, wherein the device comprises a base; the first pressure device comprises a first driving device (4), a first pressurizing plate (10) and a first pressure sensor (11), the first driving device (4) is fixedly installed at the top of the frame (1), the first pressurizing plate (10) is arranged above the tunnel model (2) and is kept connected with the first driving device (4), and the first pressure sensor (11) is arranged at the joint of the first pressurizing plate (10) and the first driving device (4).
3. The device for researching the stress state of the three-dimensional space of the tunnel according to claim 1, wherein the device comprises a base; the second pressure device comprises a second driving device (5), a second pressurizing plate (13) and a second pressure sensor (12), the second driving device (5) is arranged on two sides of the frame (1), the second pressurizing plate (13) is arranged on two sides of the tunnel model (2) and is connected with the output end of the second driving device (5) in a maintaining mode, and the second pressure sensor (12) is arranged at the joint of the second pressurizing plate (13) and the second driving device (5).
4. The device for researching the stress state of the three-dimensional space of the tunnel according to claim 1, is characterized in that: the output end of the third driving device (8) is connected with a mounting plate (6), the mounting plate (6) is connected with the side face of the frame (1) in a sliding mode, and the second pressure device is mounted on the side face of the mounting plate (6).
5. The device for researching the stress state of the three-dimensional space of the tunnel according to claim 4, wherein the device comprises a base; the mounting panel (6) and frame (1) junction are provided with guide bar (9), guide bar (9) fixed mounting is in frame (1) both sides, mounting panel (6) and guide bar (9) sliding connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121206555.3U CN215339259U (en) | 2021-06-01 | 2021-06-01 | Tunnel three-dimensional space stress state research device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121206555.3U CN215339259U (en) | 2021-06-01 | 2021-06-01 | Tunnel three-dimensional space stress state research device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215339259U true CN215339259U (en) | 2021-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121206555.3U Expired - Fee Related CN215339259U (en) | 2021-06-01 | 2021-06-01 | Tunnel three-dimensional space stress state research device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215339259U (en) |
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2021
- 2021-06-01 CN CN202121206555.3U patent/CN215339259U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211228 |
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| CF01 | Termination of patent right due to non-payment of annual fee |