CN210427196U - Test device for simulating surface fracture deformation of reverse fault under earthquake - Google Patents
Test device for simulating surface fracture deformation of reverse fault under earthquake Download PDFInfo
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- CN210427196U CN210427196U CN201921452872.6U CN201921452872U CN210427196U CN 210427196 U CN210427196 U CN 210427196U CN 201921452872 U CN201921452872 U CN 201921452872U CN 210427196 U CN210427196 U CN 210427196U
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- 238000012360 testing method Methods 0.000 title claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 86
- 239000010959 steel Substances 0.000 claims abstract description 86
- 239000002689 soil Substances 0.000 claims abstract description 49
- 238000000034 method Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 238000004088 simulation Methods 0.000 abstract description 6
- 238000011160 research Methods 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 238000005336 cracking Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 description 3
- 239000004927 clay Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000002968 anti-fracture Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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Abstract
The utility model discloses a test device that reverse fault earth's surface broke and warp under simulation earthquake, include: the device comprises a soil box, a profile steel frame, a limiting device and an actuator; the soil body box is fixed on the section steel frame, and the bottom plate of the soil body box is divided into a movable steel plate and a fixed steel plate; the movable steel plate is movable around. The top of the actuator is contacted with the middle part of the lower surface of the movable steel plate; the movable steel plate plays a role in bearing soil and pushing the soil under the pushing of the actuator. And two sides of the movable steel plate are respectively provided with a limiting device, and the limiting devices are used for restricting the movable steel plate to be lifted at a certain angle and track when the movable steel plate is jacked up by the actuator, so that the lifting of the upper disc soil body on the earthquake mid-reverse fault is simulated. The utility model has the advantages that: the error is within a controllable range. The test phenomenon is obvious, the operation repeatability is strong, the experimental result is in accordance with the previous research and experience practice, the basis can be provided for the design construction of avoiding and anti-breaking of the building in the strong earthquake cracking area, and casualties and property loss are reduced.
Description
Technical Field
The utility model relates to an earthquake simulation test technical field, in particular to test device that reverse fault earth's surface broke and warp under simulation earthquake.
Background
The strong earthquake ground surface fracture effect is a phenomenon that a fracture zone is transmitted to the ground surface under the action of earthquake fault dislocation, and the ground surface and nearby building structures are damaged or even collapsed. The fault dislocation can cause the deformation of an overlying soil layer, the deformation of the soil layer can threaten the stability of a foundation of a building (structure) built on the soil layer, and the building needs to carry out avoidance or anti-fracture design. Therefore, the research on the mechanism of the overburden layer rupture development and the foundation failure of the building near the fault caused by fault dislocation has important engineering practical value and scientific significance. Wherein, model test is an important research means.
At present, a common test device for simulating fault dislocation mainly uses a small servo motor as a loading device, and has respective technical defects: (1) the loading device at the bottom of the simulation box body has small load power and cannot well finish large-size and large-scale fault tests; (2) the balanced and uniform dislocation of the model box body in the loading process is difficult to technically realize, so that the precision of the test result is low; (3) many experimental simulation boxes are small-sized, and the real fracture condition of the overlying soil body under fault dislocation cannot be well reproduced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art's defect, provide a test device that reverse fault earth's surface broke and warp under the simulation earthquake, solved the defect that exists among the prior art.
In order to realize the purpose of the utility model, the utility model discloses the technical scheme who takes as follows:
a test device for simulating surface fracture deformation of a reverse fault under earthquake comprises: the counter-force floor, the soil body box, the profile steel frame, the limiting device and the actuator;
the soil body box is a rectangular container and is used for containing soil; the soil body box is fixed on the profile steel frame, and the bottom of the profile steel frame is fixed on the counter-force floor;
the bottom plate of the soil body box is divided into a movable steel plate and a fixed steel plate; the movable steel plates are movable all around, and are flexibly connected with the adjacent side gaps all around by canvas, so that the soil is prevented from falling off in the loading process.
The actuator is arranged in the profile steel frame, under the soil body box, the bottom of the actuator is fixed on the counter-force floor, and the top of the actuator is in contact with the middle part of the lower surface of the movable steel plate; the movable steel plate plays a role in bearing soil and pushing the soil under the pushing of the actuator.
And two sides of the movable steel plate are respectively provided with a limiting device, and the limiting devices are used for restricting the movable steel plate to be lifted at a certain angle and track when the movable steel plate is jacked up by the actuator, so that the lifting of the upper disc soil body on the earthquake mid-reverse fault is simulated.
Furthermore, the limiting device consists of an angle adjusting device and a guiding device, the angle adjusting device is welded and fixed on the section steel frame, the position of the angle adjusting device is positioned below two sides of the movable steel plate, and the guiding device is connected with the angle adjusting device through two bolts.
The angle adjusting device is a square steel plate with the thickness of 30mm, two opposite angles of the angle adjusting device are respectively provided with a group of screw holes, and angle control is carried out by the principle that a straight line is determined by two different screw holes.
The guiding device is composed of a steel cylinder in a hollow rectangular shape and a sliding block made of steel and capable of sliding in the steel cylinder. The side of the steel cylinder is provided with two screw holes which are fixedly connected with the screw holes of the angle adjusting device through two bolt bolts, the upper end of the sliding block is hinged and fixed with the lower surface of the movable steel plate, and the steel cylinder is used for enabling the sliding block to form an upward track and constraining the lifting angle and the track of the movable steel plate.
Compared with the prior art, the utility model has the advantages of:
the movable steel plate can be synchronously and horizontally lifted at a certain angle under the constraint of the guide device, and the error is within a controllable range. The test phenomenon is obvious, the operation can be repeated strongly, and the experimental result is in accordance with the previous research and experience practice. The device is used for carrying out tests and data analysis of a large number of working conditions, can carry out certain deep research on the damage phenomenon and mechanism of soil deformation near the reverse fault, particularly buildings, can provide basis for the design construction of avoiding and anti-breaking of the buildings in the strong earthquake fracture area, and reduces casualties and property loss.
Drawings
FIG. 1 is a schematic structural diagram of a testing apparatus according to an embodiment of the present invention;
figure 2 is a top view of a soil box according to an embodiment of the present invention;
FIG. 3 is a schematic view of a restriction device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an angle adjusting device according to an embodiment of the present invention;
FIG. 5 is a front view of a steel cylinder according to an embodiment of the present invention;
fig. 6 is a top view of a steel cylinder according to an embodiment of the present invention.
Description of reference numerals: the soil body box 1, the section steel frame 2, the limiting device 3, the actuator 4, the movable steel plate 5, the fixed steel plate 6, the angle adjusting device 7, the guide device 8, the steel cylinder 9 and the slide block 10.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and examples.
As shown in fig. 1 and 2, a test device for simulating surface fracture deformation of a reverse fault under earthquake comprises: a counter-force floor, a soil body box 1, a section steel frame 2, a limiting device 3 and an actuator 4,
the soil body box 1 is a rectangular container and is used for containing soil; the soil body box 1 is fixed on the section steel frame 2, and the bottom of the section steel frame 2 is fixed on the counter-force floor;
the bottom plate of the soil body box 1 is divided into a movable steel plate 5 and a fixed steel plate 6; the movable steel plates 5 are movable around and are flexibly connected with the gaps of the adjacent sides around by canvas, so that the soil is prevented from falling off in the loading process.
The actuator 4 is arranged in the profile steel frame 2, the bottom of the actuator 4 is fixed on the counter-force floor under the soil body box 1, and the top of the actuator 4 is contacted with the middle part of the lower surface of the movable steel plate 5; the movable steel plate 5 plays a role in bearing soil and pushing soil under the pushing of the actuator 4.
And two sides of the movable steel plate 5 are respectively provided with a limiting device 3, and the limiting devices 3 are used for limiting the movable steel plate 5 to be lifted by the actuator 4 at a certain angle and a fixed position. Therefore, the lifting of the upper tray soil body on the earthquake mid-reverse fault is simulated.
Two sides of the soil body box 1 are steel plates with the thickness of 15mm, and the front side is supported by double-layer organic glass with the thickness of 12mm and a square steel pipe with the thickness of 8mm and the thickness of 80 mm.
As shown in fig. 3, the limiting device 3 is composed of an angle adjusting device 7 and a guiding device 8, the angle adjusting device 7 is welded and fixed on the section steel frame 2 and is positioned below two sides of the movable steel plate 5, and the guiding device 8 is connected with the angle adjusting device 7 through two bolts.
As shown in fig. 4, the angle adjusting device 7 is a square steel plate with a thickness of 30mm, two opposite corners of the angle adjusting device 7 are respectively provided with a group of screw holes, and angle control is performed by the principle that a straight line is determined by two different screw holes, and in this embodiment, a group of four screw holes are provided, so that angle changes of 30 °, 45 °, 60 ° and 75 ° are realized.
As shown in fig. 5 and 6, the guide 8 is composed of a steel cylinder 9 in the shape of a hollow rectangular body and a slider 10 made of steel material slidable in the steel cylinder 9. The side of the steel cylinder 9 is provided with two screw holes which are fixedly connected with the screw holes of the angle adjusting device 7 through two bolt pins, the upper end of the sliding block 10 is hinged and fixed with the lower surface of the movable steel plate 5, and the steel cylinder 9 is used for enabling the sliding block 10 to form an upward track and restricting the lifting angle and the track of the movable steel plate 5.
The test device's experimental flow as follows:
filling clay into the soil box 3 in layers, tamping the clay in layers, and burying sensors such as soil pressure gauges and accelerometers in different positions in the soil according to a set test scheme; and a displacement sensor and the like can be placed on the upper surface of the soil body. The adjustment actuator 4 is the same as and consistent with the required angle of the test. When the test is started, the actuator 4 is controlled to lift at a set speed, the actuator 4 lifts the movable steel plate 5, and the movable steel plate 5 lifts the soil layer at the set speed under the constraint of the guide device 8. Recording the change data of each sensor in the jacking process by using a data acquisition system; and observing and analyzing the experimental phenomenon.
It will be appreciated by those of ordinary skill in the art that the examples described herein are intended to assist the reader in understanding the manner of practicing the invention, and it is to be understood that the scope of the invention is not limited to such specific statements and examples. Those skilled in the art can make various other specific modifications and combinations based on the teachings of the present invention without departing from the spirit of the invention, and such modifications and combinations are still within the scope of the invention.
Claims (2)
1. A test device for simulating surface fracture deformation of a reverse fault under earthquake is characterized by comprising: the counter-force floor, the soil body box, the profile steel frame, the limiting device and the actuator;
the soil body box is a rectangular container and is used for containing soil; the soil body box is fixed on the profile steel frame, and the bottom of the profile steel frame is fixed on the counter-force floor;
the bottom plate of the soil body box is divided into a movable steel plate and a fixed steel plate; the periphery of the movable steel plate is movable and is in flexible connection with the adjacent side gaps around by canvas, so that the soil is prevented from falling off in the loading process;
the actuator is arranged in the profile steel frame, under the soil body box, the bottom of the actuator is fixed on the counter-force floor, and the top of the actuator is in contact with the middle part of the lower surface of the movable steel plate; the movable steel plate plays a role in receiving soil and pushing the soil under the pushing of the actuator;
and two sides of the movable steel plate are respectively provided with a limiting device, and the limiting devices are used for restricting the movable steel plate to be lifted at a certain angle and track when the movable steel plate is jacked up by the actuator, so that the lifting of the upper disc soil body on the earthquake mid-reverse fault is simulated.
2. The test device for simulating the surface fracture deformation of the reverse fault under the earthquake according to claim 1, wherein: the limiting device consists of an angle adjusting device and a guiding device, the angle adjusting device is welded and fixed on the section steel frame and is positioned below two sides of the movable steel plate, and the guiding device is connected with the angle adjusting device through two bolts;
the angle adjusting device is a square steel plate with the thickness of 30mm, two opposite angles of the angle adjusting device are respectively provided with a group of screw holes, and angle control is carried out by the principle that a straight line is determined by different two-point screw holes;
the guide device consists of a steel cylinder in a hollow rectangular shape and a sliding block made of steel and capable of sliding in the steel cylinder; the side of the steel cylinder is provided with two screw holes which are fixedly connected with the screw holes of the angle adjusting device through two bolt bolts, the upper end of the sliding block is hinged and fixed with the lower surface of the movable steel plate, and the steel cylinder is used for enabling the sliding block to form an upward track and constraining the lifting angle and the track of the movable steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921452872.6U CN210427196U (en) | 2019-09-03 | 2019-09-03 | Test device for simulating surface fracture deformation of reverse fault under earthquake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921452872.6U CN210427196U (en) | 2019-09-03 | 2019-09-03 | Test device for simulating surface fracture deformation of reverse fault under earthquake |
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| CN210427196U true CN210427196U (en) | 2020-04-28 |
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| CN201921452872.6U Withdrawn - After Issue CN210427196U (en) | 2019-09-03 | 2019-09-03 | Test device for simulating surface fracture deformation of reverse fault under earthquake |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110411821A (en) * | 2019-09-03 | 2019-11-05 | 防灾科技学院 | A kind of experimental rig of simulation earthquake subinverse Surface rupture of faults deformation |
-
2019
- 2019-09-03 CN CN201921452872.6U patent/CN210427196U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110411821A (en) * | 2019-09-03 | 2019-11-05 | 防灾科技学院 | A kind of experimental rig of simulation earthquake subinverse Surface rupture of faults deformation |
| CN110411821B (en) * | 2019-09-03 | 2024-03-19 | 防灾科技学院 | Test device for simulating reverse fault ground surface fracture deformation under earthquake |
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