CN106840882B - Combined test device with adjustable slope trend included angle - Google Patents
Combined test device with adjustable slope trend included angle Download PDFInfo
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- CN106840882B CN106840882B CN201710168089.6A CN201710168089A CN106840882B CN 106840882 B CN106840882 B CN 106840882B CN 201710168089 A CN201710168089 A CN 201710168089A CN 106840882 B CN106840882 B CN 106840882B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
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Abstract
The invention discloses a combined test device with an adjustable included angle of the trend of a side slope, wherein the side slope model is a model entity with included angles of the trend of an upper area and a lower area, the side slope model is positioned in a model box, the model box is connected with a main body area box body and a corner area box body through bolts, a bottom plate of the main body area box body is spliced through a bottom plate unit, the bottom plate unit is formed by a square steel frame and embedded with a wood plate, a side plate and a front plate of the main body area box body are connected with a corner piece through high-strength bolts through square box body components, the bottom plate of the corner area box body is spliced through a fan-shaped steel plate unit with high-strength bolts at the outer side, the side plate of the corner area box body is connected with a counter-force plate, a support plate and a sliding rail in horizontal loading equipment through high-strength bolts, and a jack in the horizontal loading equipment is attached to the back of the model box. Simple structure, convenient to use can simulate side slope unstability process fast and accurately, carries out side slope space stability analysis.
Description
Technical Field
The invention belongs to a model test device, and particularly relates to a combined test device with an adjustable slope trend included angle, which is suitable for test research on influence of the slope trend included angle in upper and lower areas of a slope on the slope stability.
Background
At present, more research results are available for stability analysis and safety evaluation of the side slope, and three-dimensional side slope stability based on space benefit is a research hot spot. The spatial effect refers to the concave-convex shape of the slope, the end effect of the sliding body and the influence of the trend of the slope on the stability of the slope. The existing research results only relate to the influence of the concave-convex shape of the slope and the end effect of the sliding body on the slope space stability, and no related research on the influence of the trend of the slope on the slope stability exists. In order to analyze and study the influence of the included angle of the slope trend on the potential damage mechanism, on one hand, theoretical analysis and numerical simulation are needed, and on the other hand, more exploration and analysis are needed by means of model tests.
Disclosure of Invention
The invention aims to provide a combined test device with an adjustable slope trend included angle, which has the advantages of simple structure, convenient use, adjustable size and flexible disassembly and assembly, can quickly and accurately simulate the slope instability process, and can perform the exploration of a slope potential damage mechanism and the analysis of spatial stability.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a combined test device with adjustable slope trend included angle comprises a slope model, a model box and horizontal loading equipment; the method is characterized in that: the slope model is a model entity with included angles between the trend of the upper area and the trend of the lower area, and is positioned in the model box; the model box is formed by connecting a detachable main body region box body and a corner region box body through high-strength bolts; the model box is respectively connected with a counter-force plate, a support plate and a slide rail in the horizontal loading equipment, and a jack of the horizontal loading equipment is tightly attached to the back of the model box. In addition, the trend included angle of the model box is changed by increasing or reducing the number of bottom plates and side plates of the box body in the corner area; the length and the height of the model box are changed by increasing or decreasing the number of the bottom plates and the side plates of the box body in the main body area.
The main body area box body comprises a bottom plate, side plates, a front plate and a bearing plate, wherein the bottom plate is spliced by 8-10 bottom plate units, and the bottom plate units are formed by embedding a wood plate into square steel frames with high-strength bolts on two sides; the side plates and the front plate are formed by connecting square box body components and corner pieces through high-strength bolts.
The corner region box body comprises a bottom plate, side plates and a rotating shaft, wherein the bottom plate is spliced by 0 or 1-18 fan-shaped steel plate units with high-strength bolts on the outer sides (0 means no bottom plate unit, and the bottom plate is spliced by fan-shaped steel plate units without high-strength bolts on the outer sides when the corner of the model box is zero); the side plates are formed by connecting hollow cast steel arc box body components with front openings through high-strength bolts; the rotating shaft is a hinge structure, and the two-sided hinges are provided with high-strength bolts.
The horizontal loading equipment comprises a counter-force plate, a support plate, a sliding rail, a sliding block and a jack, wherein the counter-force plate is vertically fixed on the bottom plate of the model box, the counter-force plate is opposite to the pressure bearing plate of the model box, and the support plate is arranged on one side of the opposite pressure bearing plate; the sliding rail is welded on one side of the counter force plate opposite to the bearing plate; the sliding block is arranged on the sliding rail.
The main body area box body comprises a bottom plate, side plates, a front plate and a bearing plate. The bottom plate is spliced by 8-10 bottom plate units with the length of 1.2-1.6m, the width of 0.4-0.6m and the thickness of 18-22mm, the bottom plate of the upper area is 2.2-2.7m, the width of 1.2-1.6m and the thickness of 18-22mm after the bottom plate units are spliced, and the bottom plate of the lower area is 1.8-2.2m, the width of 1.2-1.6m and the thickness of 18-22mm. The side plate and the front plate are formed by connecting square box body components with the wall thickness of 18-22mm and corner pieces through high-strength bolts; the square box body component is a hollow cast steel square box body component with a front opening, a length of 0.4-0.6m, a width of 0.1-0.3m and a height of 0.4-0.6m, a wood board is embedded in the back of the square box body component in a hollow manner, and bolt connection holes of phi 30 are respectively formed in the upper side, the lower side, the left side and the right side of the square box body component; the corner fittings are hollow cast steel square box body members with openings on two adjacent side surfaces, wherein the length of the hollow cast steel square box body members is 0.1-0.3m, the width of the hollow cast steel square box body members is 0.1-0.3m, the height of the hollow cast steel square box body members is 0.4-0.6m, the other surfaces of the hollow cast steel square box body members are provided with phi 30 bolt connecting holes, and the length of a front plate is 1.2-1.6m, the width of the square box body members is 0.1-0.3m, and the height of the square box body members is 1.8-2.2m after the square box body members are connected with the corner fittings; the width of the side plate is 0.1-0.3m and 1.8-2.2m. The bearing plate is a whole wood board with the thickness of 38-42mm, the width of 0.8-1.2m and the height of 1.8-2.2m. According to the width of the test device and the similarity ratio of the slope prototype and the test model, the length and the height of the test device are adjusted by increasing or decreasing the number of the bottom plates and the side plates of the main body region box body.
The corner region box body comprises a bottom plate, side plates and a rotating shaft. The bottom plate is formed by splicing 0 or 1-18 fan-shaped steel plate units with the central angles of 4-6 degrees, the radii of 1.2-1.6m and the thicknesses of 18-22mm and with high-strength bolts on the outer sides (0 refers to no bottom plate unit, and indicates that the bottom plate is spliced by the fan-shaped steel plate units with the central angles, the radii and the thick outer sides and with the high-strength bolts when the model box rotation angle is zero degrees). The side plates are formed by connecting hollow cast steel arc box body components with front openings through high-strength bolts; the back of the arc-shaped box body component is an arc-shaped steel plate, and bolt connecting holes of phi 30 are respectively arranged on the upper side, the lower side, the left side and the right side of the arc-shaped box body component. The rotating shaft is a hinge structure, and the two-sided hinges are provided with high-strength bolts. The test personnel can realize the change of the trend included angle of the side slope at intervals of 4-6 degrees according to the trend included angle of the upper and lower areas of the side slope model by opening or closing the angle of the hinge of the rotating shaft and increasing or reducing the number of the bottom plate and the side plate of the box body at the corner area.
The horizontal loading device comprises a counter-force plate, a support plate, a sliding rail, a sliding block and a jack. The counter-force plate is vertically fixed on the bottom plate of the model box and is opposite to the bearing plate of the model box; the supporting plate is arranged at one side of the opposite bearing plates; the sliding rail is welded on one side of the counter force plate opposite to the bearing plate; the sliding block is arranged on the sliding rail and can slide up and down, and the position is fixed through a high-strength bolt; the jack is fixed on the slide block and is opposite to the bearing plate. During the test, the jack is used for applying thrust to the bearing plate to simulate the slope damage process.
The invention has the following characteristics:
(1) The included angle of the side slope trend of the test device is adjustable. The increase or decrease of the trend included angle of the upper and lower areas of the slope can be realized by increasing or decreasing the number of the box bodies in the corner area.
(2) The size of the test device is adjustable. The length and the height of the test device can be adjusted by increasing or reducing the number of the bottom plates and the side plates of the main body region box body, and the slope model test with any size can be realized by adjusting the similarity ratio of the slope prototype to the test model according to the width of the test device.
(3) The test device has the advantages of light structure and flexible disassembly and assembly. On one hand, the cast steel box body member is inlaid with the wood board, so that the structural quality can be reduced, and the disassembly and assembly are convenient; on the other hand, through high-strength bolt connection assembly box component, rigidity and overall stability of test device can be increased.
(4) The included angle between the running direction of the upper area and the running direction of the lower area of the slope model can be designed to be 0 degree, 30 degrees, 60 degrees and 90 degrees through the corner area box body, pressure is applied to the model through the horizontal loading device, meanwhile, the displacement and deformation of the slope model are monitored, the influence of the included angle between the running direction on the potential damage mechanism of the slope can be compared and analyzed, and the influence of the running direction of the slope body on the stability of the slope is further studied. The experiment can obtain that the trend included angle influences the deformation range and the damage degree of the side slope, the larger the trend included angle is, the less residual sliding force in the upper area of the side slope is transmitted to the lower area, the smaller the slope deformation range is, the damage degree is low, and the stability is obviously improved along with the increase of the trend included angle.
Drawings
FIG. 1 is a schematic structural view of a combined test device with adjustable slope strike angle.
Fig. 2 is a schematic structural view of the mold box in fig. 1.
Fig. 3 is a schematic view of the slope model in fig. 1.
Fig. 4 is a schematic view of a square base plate unit structure in fig. 2.
Fig. 5 is a schematic structural view of a square box member in fig. 2.
Fig. 6 is a schematic view of the corner fitting of fig. 2.
Fig. 7 is a schematic view of the fan-shaped floor unit of fig. 2.
Fig. 8 is a schematic view of the arc-shaped box member in fig. 2.
FIG. 9 is a schematic view of the structure of the rotating shaft in FIG. 1;
fig. 10 is a schematic structural view of the horizontal loading apparatus of fig. 1.
Wherein: 1-side slope model, 2-model box, 3-horizontal loading equipment, 4-main body area box, 5-corner area box, 6-bottom plate, 7-side plate, 8-front plate, 9-bearing plate, 10-bottom plate unit, 11-high strength bolt, 12-square steel frame, 13-inlaid wood plate, 14-square box body component, 15-corner piece, 16-bolt connecting hole, 17-rotating shaft, 18-fan-shaped steel plate unit, 19-arc box body component, 20-hinge structure, 21-hinge, 22-counter plate, 23-supporting plate, 24-sliding rail, 25-sliding block and 26-jack (common, all available on the market).
Detailed Description
Example 1:
the invention is described in further detail below with reference to the attached drawing figures:
according to the figures 1-10, a combined test device with adjustable slope trend included angle is composed of a slope model 1, a model box 2 and horizontal loading equipment 3. The method is characterized in that: the slope model 1 is a model entity with included angles between the trend of the upper area and the trend of the lower area, the slope model 1 is positioned in the model box 2, and the model box 2 is connected with the corner area box 5 through a detachable main area box 4 and a high-strength bolt 11; the model box 2 is respectively connected with a counter-force plate 22, a support plate 23 and a slide rail 24 in the horizontal loading device 3, and a jack 26 in the horizontal loading device 3 is tightly attached to the back of the model box 2.
The main body area box body 4 comprises a detachable bottom plate 6, side plates 7, a front plate 8 and a bearing plate 9. The bottom plate is spliced by 8 or 9 or 10 bottom plate units, the bottom plate unit 10 is formed by embedding a wood plate 13 into a square steel frame 12 with high-strength bolts 11 on two sides, the bottom plate 6 is spliced by 9 bottom plate units 10 with the length of 1.4m, the width of 0.5m and the thickness of 20mm, the bottom plate in the upper area after the bottom plate units 10 are spliced is 2.5m, the width of 1.4m and the thickness of 20mm, and the bottom plate in the lower area of the bottom plate units 10 is 2m, the width of 1.4m and the thickness of 20mm. The side plate 7 and the front plate 8 are formed by connecting square box body members 14 with wall thickness of 20mm and corner pieces 15 through high-strength bolts; the square box body member 14 is a hollow cast steel square box body with a front opening, a length of 0.5m, a width of 0.2m and a height of 0.5m, the back surface of the square box body member 14 is hollow and embedded with a wood plate 13, and the upper side, the lower side, the left side and the right side of the square box body member 14 are respectively provided with a phi 30 bolt connecting hole 16; the corner fittings 15 are hollow cast steel square corner fittings with openings on two adjacent side surfaces with the length of 0.2m, the width of 0.2m and the height of 0.5m, the other side surfaces are provided with phi 30 bolt connecting holes 16, and the square box body member 14 and the corner fittings 15 are connected, and the front plate is 1.4m long, 0.2m wide and 2m high; the width of the side plate is 0.2m, and the height is 2m. The bearing plate 9 is a monolithic wood board with the thickness of 40mm, the width of 1m and the height of 2m. The tester can adjust the length and the height of the test device by increasing or decreasing the number of the bottom plates and the side plates of the main body region box body according to the width of the test device and the similarity ratio of the slope prototype to the test model.
The corner region box body 5 comprises a detachable bottom plate 6, a side plate 7 and a rotating shaft 17; the bottom plate is formed by splicing 0 or 1 or 2 or 4 or 6 or 8 or 10 or 12 or 14 or 16 or 18 fan-shaped steel plate units 18 with 5-degree central angles, 1.4m radiuses and 20mm thick outer sides provided with high-strength bolts 11 (0 means that no bottom plate unit exists, and the bottom plate does not need central angles, radius and thick outer sides provided with high-strength bolts when the model box corner is zero degrees; the side plate 7 is formed by connecting hollow cast steel arc box body members 19 with front openings through high-strength bolts; the back of the arc-shaped box body member 19 is an arc-shaped steel plate, and four sides of the arc-shaped box body member 19 are respectively provided with a phi 30 bolt connecting hole 16; the rotating shaft 17 is a hinge structure 20, and the two-sided hinge 21 is provided with a high-strength bolt 11. The test personnel can open or close the angle according to the trend included angle of the upper region and the lower region of the slope model, and increase or decrease the number of the bottom plate and the side plate of the box body in the corner region through the hinge angle of the rotating shaft, so that the change of the trend included angle of the slope at intervals of 5 degrees can be realized.
The horizontal loading device 3 comprises a counter-force plate 22, a support plate 23, a slide rail 24, a slide block 25 and a jack 26 (such as model JRCS-502); the counter-force plate 22 is vertically fixed on the model box bottom plate 6, and the counter-force plate 22 is opposite to the model box bearing plate 9; the supporting plate 23 is arranged on one side of the opposite bearing plate 9; the slide rail 24 is welded on one side of the counter force plate 22 opposite to the bearing plate 9; the sliding block 25 is arranged on the sliding rail 24 and can slide up and down, and the position is fixed through a high-strength bolt; the jack 26 is fixed to the slider 25, opposite to the bearing plate 9. In the test, the jack 26 applies thrust to the bearing plate 9 to simulate the slope damage process.
The invention has been described in detail with reference to the drawings and embodiments, but is not limited thereto, and all modifications and variations falling within the scope of the present invention are within the scope of the following claims.
Claims (3)
1. The utility model provides a side slope trend contained angle adjustable combination formula test device, it comprises side slope model (1), model box (2) and horizontal loading equipment (3), its characterized in that: the side slope model (1) is a model entity with included angles between the upper area and the lower area, the side slope model (1) is positioned in a model box (2), the model box (2) is connected with a corner area box (5) through a main area box (4) through a high-strength bolt (11), the model box (2) is respectively connected with a counter-force plate (22), a support plate (23) and a slide rail (24) in a horizontal loading device (3), and a jack (26) in the horizontal loading device (3) is attached to the back of the model box (2);
the main body area box body (4) comprises a bottom plate (6), side plates (7), a front plate (8) and a bearing plate (9), wherein the bottom plate (6) is spliced by 8-10 square steel frames (12) with high-strength bolts (11) on two sides and embedded with a wood plate (13), the side plates (7) and the front plate (8) are connected by hollow cast steel square box body members (14) with the wall thickness of 18-22mm and corner pieces (15) through high-strength bolts, and the length of the bottom plate is 1.2-1.6m, the width of the bottom plate is 0.4-0.6m and the thickness of the bottom plate unit (10) is 18-22 mm;
the corner region box body (5) comprises a bottom plate (6), side plates (7) and a rotating shaft (17), wherein the bottom plate (6) is spliced by 1-18 circular angles 4-6 degrees, the radius is 1.2-1.6m, the outer side of the bottom plate is provided with a fan-shaped steel plate unit (18) with a high-strength bolt, the thickness is 18-22mm, the side plates (7) are connected by a hollow cast steel arc box body member (19) with an opening at the front side through the high-strength bolt, and the rotating shaft (17) is a hinge structure (20);
the horizontal loading device (3) comprises a counter-force plate (22), a support plate (23), a sliding rail (24), a sliding block (25) and a jack (26), wherein the counter-force plate (22) is vertically fixed on the model box bottom plate (6), the counter-force plate (22) is opposite to the model box bearing plate (9), and the support plate (23) is arranged on one side of the opposite bearing plate (9); the sliding rail (24) is welded on one side of the counter force plate (22) opposite to the bearing plate (9); the sliding block (25) is arranged on the sliding rail (24).
2. The combined test device with adjustable slope strike included angle according to claim 1, wherein: the square box body member (14) is a hollow cast steel square box body member with a front opening, a length of 0.4-0.6m, a width of 0.1-0.3m and a height of 0.4-0.6m, a back hollow embedded wood board (13) is arranged on the square box body member (14), bolt connecting holes (16) of phi 30 are respectively formed in the upper side, the lower side, the left side and the right side of the square box body member (14), corner pieces (15) are hollow square box body members with two adjacent side openings, the length of which is 0.1-0.3m, the width of which is 0.1-0.3m and the height of 0.4-0.6m, the length of a front plate (8), the width of which is 0.1-0.3m, the height of which is 1.8-2.2m, the width of a side plate (7) is 0.1-0.3m and the height of which is 1.8-2.2m; the bearing plate (9) is a monolithic wood board with the thickness of 38-42mm, the width of 0.8-1.2m and the height of 1.8-2.2m.
3. The combined test device with adjustable slope strike included angle according to claim 1, wherein: the side plates (7) are formed by connecting hollow cast steel arc box body members (19) with front openings through high-strength bolts, the back surfaces of the arc box body members (19) are arc steel plates, phi 30 bolt connecting holes (16) are respectively formed in the upper side, the lower side, the left side and the right side of the arc box body members (19), and the high-strength bolts (11) are arranged on the two-sided hinges (21).
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| CN107179396B (en) * | 2017-07-07 | 2020-01-03 | 东北大学 | Multifunctional assembled geotechnical engineering physical similarity test system |
| CN108120818B (en) * | 2017-11-29 | 2020-07-31 | 中国神华能源股份有限公司 | Similar simulation experiment table |
| CN109884286B (en) * | 2019-03-19 | 2022-01-28 | 新疆农业大学 | Variable test inclined plane mould concrete anti-crack test device |
| CN114910626B (en) * | 2022-05-13 | 2023-08-15 | 山东科技大学 | Model test device and method based on basic mosaic unit |
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| 降雨条件下边坡角度对边坡稳定性影响的数值模拟研究;孙永帅;《工程地质学报》;第83-87页 * |
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| CN106840882A (en) | 2017-06-13 |
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