CN210427233U - Rock-soil model three-dimensional loading test system based on underground lifting platform - Google Patents
Rock-soil model three-dimensional loading test system based on underground lifting platform Download PDFInfo
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- CN210427233U CN210427233U CN201921306267.8U CN201921306267U CN210427233U CN 210427233 U CN210427233 U CN 210427233U CN 201921306267 U CN201921306267 U CN 201921306267U CN 210427233 U CN210427233 U CN 210427233U
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- 238000009412 basement excavation Methods 0.000 description 2
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- 238000007710 freezing Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
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Abstract
The utility model discloses a ground model three-dimensional loading test system based on underground lifting platform, including mold box, three-dimensional loading system includes the rectangle foundation ditch, is equipped with the horizontal loading frame of rectangle in the rectangle foundation ditch, is equipped with the platform of placing the mold box between the stand of horizontal loading frame to and the actuating mechanism that drives the platform and go up and down, still is equipped with height-adjustable's crossbeam between the adjacent stand, installs the horizontal actuator of position lateral adjustability on the crossbeam; a height-adjustable main beam is spanned above the horizontal loading frame, and a vertical actuator with a transversely adjustable position is arranged on the main beam. The utility model discloses test system designs based on secret liftable platform, for traditional test system, the utility model discloses can select different proof boxes according to the difference of test item, again according to the position of proof box size adjustment three-dimensional direction loading power, can be suitable for multiple experiment, the suitability is strong.
Description
Technical Field
The utility model relates to a field especially relates to a ground model three-dimensional loading test system based on underground lift platform.
Background
With the continuous development of the field of geotechnical engineering, a plurality of geotechnical engineering problems related to abundant underground water, complex geological conditions, complex construction environments and the like emerge endlessly, and new trends of deep depth, large scale and complex construction also appear in foundation pit engineering, side slope engineering and the like. According to statistics, at the beginning of the century, the deepest foundation pit in China is about 20m, the depth of the deep foundation pit in China is 30-40 m, and complex slope problems such as a high slope, a weak slope, a seasonal region slope and the like in slope engineering also bring continuous challenges to researchers and technicians. In the face of complex problems in geotechnical engineering, a method for carrying out indoor physical similarity tests by using a large geotechnical engineering model experiment system is commonly used for research and solution at present.
The large-scale geotechnical and underground engineering model experiment system is an important means for researching large-scale geotechnical engineering problems, is widely applied at home and abroad, and plays an important role in engineering scientific research, design and demonstration. The experimental research work of the geotechnical engineering multifunctional experimental system is carried out in developed countries such as America, British, Germany, Italy, Japan, Norway and the like, and the research work with great efficiency is carried out aiming at the engineering problems of the combined action of pile and soil, the stress mechanism of various piles, the pile group effect, the stability of the surrounding rock of the top plate of the large mine, the stability of the rock mass of a dam body and a dam foundation, the stability and the support of the surrounding rock of a large cavern and the like, and corresponding experimental equipment is developed. In China, such as foundation research institute of Chinese architectural science research institute, Wuhan research institute of geotechnical engineering, research institute of general engineering soldiers, Qinghua university, Beijing university of science and technology, river-sea university, Shijiazhuang railway college, Beijing institute of architectural engineering, Tongji university, Shandong university and other units, research work in this respect is carried out successively, and a multifunctional experiment system with unequal scales is developed.
However, the actuator installation position, the size of the model box and the installation position of the existing engineering model experiment system are fixed, so that the problem of insufficient flexibility exists, and generally, one engineering model experiment system can only test specific geotechnical environments, so that the universality is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a ground model three-dimensional loading test system based on underground lift platform that suitability is stronger.
In order to realize the purpose of the utility model, the technical proposal of the utility model is that: a rock-soil model three-dimensional loading test system based on an underground lifting platform comprises a model box, a three-dimensional loading system, a hydraulic system, a data acquisition system and a control system, wherein the three-dimensional loading system comprises a rectangular foundation pit; a platform for placing the model box and a driving mechanism for driving the platform to lift are arranged between the upright posts of the horizontal loading frame, the platform lifts according to the size of the model box to adjust the height, and a limiting mechanism for fixing the platform is arranged between the platform and the upright posts; a height-adjustable cross beam is also arranged between the adjacent upright posts, and a horizontal actuator with a transversely adjustable position is arranged on the cross beam; a vertical loading frame is arranged above the horizontal loading frame in a spanning mode, the vertical loading frame comprises two vertical beams, the two vertical beams are symmetrically arranged on two sides of the outer portion of the rectangular foundation pit, a height-adjustable main beam is connected between the vertical beams, and a vertical actuator with a transversely-adjustable position is arranged on the main beam; during testing, the positions of the cross beam, the horizontal actuator, the main beam and the vertical actuator are adjusted according to the size of the model box, and three-dimensional six-degree-of-freedom loading is carried out on the model box.
Further, actuating mechanism includes linear guide, and linear guide is vertical to be installed between the upper and lower crossbeam of horizontal loading frame, platform all around with linear guide's slider fixed connection, linear guide slides from top to bottom through ordering about the slider to drive the platform and realize going up and down.
Furthermore, stop gear is including setting up the bolt hole on the stand, is provided with high strength bolt in the bolt hole, and high strength bolt supports in the platform below, carries on spacingly to the platform.
Further, all be equipped with linear guide between horizontal actuator and crossbeam, vertical actuator and girder, crossbeam and stand, girder and the upright beam, linear guide drives horizontal actuator, vertical actuator translation, drives crossbeam, girder lift, realizes that the position is adjustable.
Furthermore, the platform and the driving mechanism thereof can be replaced by a hydraulic scissor lifting platform.
The utility model has the advantages that: the utility model discloses test system designs based on secret liftable platform, for traditional test system, the utility model discloses can select different proof boxes according to the difference of test item, again according to the position of proof box size adjustment three-dimensional direction loading power, can be suitable for multiple experiment, the suitability is strong. Additionally, the utility model discloses the setting is in the subsurface, is favorable to reducing area, utilizes the ground body to support as the counter-force moreover, and structural design is simpler relatively, is favorable to reducing the cost, simultaneously, utilizes the ground body to support as the counter-force, is favorable to increasing the load scope, simulates the mechanics change characteristic of processes such as geotechnical engineering excavation construction betterly.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a top view of the present invention;
fig. 3 is a front view of the present invention;
fig. 4 is a side view of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
As shown in fig. 1-4, a geotechnical model three-dimensional loading test system based on an underground lifting platform comprises a model box 1, a three-dimensional loading system 2 (not shown), a hydraulic system, a data acquisition system and a control system, wherein,
the three-dimensional loading system 2 comprises a rectangular foundation pit 21, a rectangular horizontal loading frame 22 is arranged in the rectangular foundation pit 21, a cushion block support 23 is arranged on the side wall of the rectangular foundation pit 21, and a stand column 221 of the horizontal loading frame 22 is fixed on the side wall of the rectangular foundation pit 21 through the cushion block support 23.
A platform 24 for placing the model box 1 and a driving mechanism 25 for driving the platform 24 to ascend and descend are arranged between the upright columns 221 of the horizontal loading frame 22, the platform 24 ascends and descends according to the size of the model box 1 to adjust the height, and a limiting mechanism 26 (not shown in the figure) for fixing the platform 24 is arranged between the platform 24 and the upright columns 221.
The driving mechanism 25 comprises a linear guide rail 251, the linear guide rail 251 is vertically installed between an upper cross beam 223 and a lower cross beam 224 of the horizontal loading frame 22, the periphery of the platform 24 is fixedly connected with a sliding block 252 of the linear guide rail 251, and the linear guide rail 251 drives the platform 24 to lift by driving the sliding block 252 to slide up and down.
The limiting mechanism 26 comprises bolt holes formed in the stand columns, high-strength bolts are arranged in the bolt holes, and the high-strength bolts are supported below the platform to limit the platform.
A height-adjustable cross beam 222 is further arranged between the adjacent upright columns 221, and a horizontal actuator 27 with a transversely adjustable position is mounted on the cross beam 222; the vertical loading frame 28 is spanned above the horizontal loading frame 22, the vertical loading frame 28 comprises two vertical beams 281, the two vertical beams 281 are symmetrically arranged on two sides of the outside of the rectangular foundation pit 21, a main beam 282 with adjustable height is connected between the vertical beams 281, and a vertical actuator 29 with transversely adjustable position is arranged on the main beam 282.
Linear guide rails are arranged between the horizontal actuator 27 and the cross beam 222, between the vertical actuator 29 and the main beam 282, between the cross beam 222 and the upright column 221, and between the main beam 282 and the upright beam 281, and the linear guide rails drive the horizontal actuator 27 and the vertical actuator 29 to move horizontally, so that the cross beam 222 and the main beam 282 are driven to lift, and position adjustment is realized.
During the test, the positions of the cross beam 222, the horizontal actuator 27, the main beam 282 and the vertical actuator 29 are adjusted according to the size of the model box 1, and the model box 1 is loaded in three-dimensional six-degree-of-freedom.
The utility model discloses test system designs based on secret liftable platform, for traditional test system, the utility model discloses can select different proof boxes according to the difference of test item, again according to the position of proof box size adjustment three-dimensional direction loading power, can be suitable for multiple experiment, the suitability is strong. Additionally, the utility model discloses the setting is in the subsurface, is favorable to reducing area, utilizes the ground body to support as the counter-force moreover, and structural design is simpler relatively, is favorable to reducing the cost, simultaneously, utilizes the ground body to support as the counter-force, is favorable to increasing the load scope, simulates the mechanics change characteristic of processes such as geotechnical engineering excavation construction betterly.
Further, the platform 24 and its driving mechanism 25 may be replaced by a hydraulic scissor lift platform.
In order to further improve the applicability of the utility model, an acrylic transparent plate can be arranged on the side surface of the model box so as to facilitate observation and information acquisition; freezing pipes can be arranged in the model box to simulate freezing method construction; a grouting pipe can be arranged in the model box to simulate a grouting process construction test; a spraying system can be arranged on the model box and is externally connected with a water tank, a water pump, a pipeline and the like so as to simulate an external rainfall influence test; an integral type waterproof soil box can be adopted, and the integral type waterproof soil box is externally connected with a water tank, a water pump and a pipeline to simulate underground water level lifting and seepage tests.
The described embodiments are only some, but not all embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the scope of the present invention.
Claims (5)
1. A rock-soil model three-dimensional loading test system based on an underground lifting platform comprises a model box, a three-dimensional loading system, a hydraulic system, a data acquisition system and a control system, and is characterized in that the three-dimensional loading system comprises a rectangular foundation pit, a rectangular horizontal loading frame is arranged in the rectangular foundation pit, a cushion block support is arranged on the side wall of the rectangular foundation pit, and a stand column of the horizontal loading frame is fixed on the side wall of the rectangular foundation pit through the cushion block support; a platform for placing the model box and a driving mechanism for driving the platform to lift are arranged between the upright posts of the horizontal loading frame, the platform lifts according to the size of the model box to adjust the height, and a limiting mechanism for fixing the platform is arranged between the platform and the upright posts; a height-adjustable cross beam is also arranged between the adjacent upright posts, and a horizontal actuator with a transversely adjustable position is arranged on the cross beam; a vertical loading frame is arranged above the horizontal loading frame in a spanning mode, the vertical loading frame comprises two vertical beams, the two vertical beams are symmetrically arranged on two sides of the outer portion of the rectangular foundation pit, a height-adjustable main beam is connected between the vertical beams, and a vertical actuator with a transversely-adjustable position is arranged on the main beam; during testing, the positions of the cross beam, the horizontal actuator, the main beam and the vertical actuator are adjusted according to the size of the model box, and three-dimensional six-degree-of-freedom loading is carried out on the model box.
2. The underground lifting platform-based geotechnical model three-dimensional loading test system according to claim 1, wherein said driving mechanism includes a linear guide rail, the linear guide rail is vertically installed between upper and lower beams of the horizontal loading frame, the periphery of the platform is fixedly connected with a slide block of the linear guide rail, and the linear guide rail drives the platform to lift by driving the slide block to slide up and down.
3. The underground lifting platform-based geotechnical model three-dimensional loading test system according to claim 1, wherein said limiting mechanism includes bolt holes disposed on the columns, high-strength bolts are disposed in the bolt holes, and the high-strength bolts are supported below the platform to limit the platform.
4. The underground lifting platform-based rock-soil model three-dimensional loading test system according to claim 1, wherein linear guide rails are arranged among the horizontal actuator and the cross beam, the vertical actuator and the main beam, the cross beam and the upright column, and the main beam and the upright beam, and the linear guide rails drive the horizontal actuator and the vertical actuator to translate, drive the cross beam and the main beam to lift, and realize position adjustability.
5. The underground lifting platform-based geotechnical model three-dimensional loading test system according to claim 2, wherein said platform and its driving mechanism can be replaced by hydraulic scissor lifting platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921306267.8U CN210427233U (en) | 2019-08-13 | 2019-08-13 | Rock-soil model three-dimensional loading test system based on underground lifting platform |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921306267.8U CN210427233U (en) | 2019-08-13 | 2019-08-13 | Rock-soil model three-dimensional loading test system based on underground lifting platform |
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| CN210427233U true CN210427233U (en) | 2020-04-28 |
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| CN201921306267.8U Expired - Fee Related CN210427233U (en) | 2019-08-13 | 2019-08-13 | Rock-soil model three-dimensional loading test system based on underground lifting platform |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110286039A (en) * | 2019-08-13 | 2019-09-27 | 福建工程学院 | Geotechnical model three-dimensional load test system based on underground hoistable platform |
| CN112903492A (en) * | 2021-02-01 | 2021-06-04 | 北京工业大学 | Fatigue loading device capable of adjusting height of counter-force cross beam and position of support |
-
2019
- 2019-08-13 CN CN201921306267.8U patent/CN210427233U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110286039A (en) * | 2019-08-13 | 2019-09-27 | 福建工程学院 | Geotechnical model three-dimensional load test system based on underground hoistable platform |
| CN110286039B (en) * | 2019-08-13 | 2024-04-16 | 福建工程学院 | Rock-soil model three-dimensional loading test system based on underground lifting platform |
| CN112903492A (en) * | 2021-02-01 | 2021-06-04 | 北京工业大学 | Fatigue loading device capable of adjusting height of counter-force cross beam and position of support |
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Granted publication date: 20200428 |