CN216350703U - Pile-supported reinforced embankment model test device - Google Patents

Abstract

The utility model discloses a pile-supported reinforced embankment model test device, which belongs to the technical field of road model test equipment and comprises a measuring unit, an upper box body and a lower box body which are connected through a connecting piece, wherein an embankment model comprises four model piles, simulation soil among the piles and filler in the upper box body, the four model piles are correspondingly arranged at four corners in the lower box body, and reinforced materials are arranged at the junction of the upper box body and the lower box body; the measuring unit is arranged inside the embankment model. The lower model piles and the simulated soil among the piles are arranged in the lower box body, the upper box body is filled with filling materials, reinforced materials are laid at the junction of the upper box body and the lower box body, the periphery boundary of the embankment model is fixed by means of the upper box body and the lower box body, and the formed embankment model can simulate the actual scene of the pile-supported reinforced embankment and further ensure the authenticity of the test effect; the measuring unit can be used for measuring the internal soil pressure and the settlement of the embankment model and the deformation of the reinforced material, and theoretical basis is provided for researching the pile-supported reinforced embankment.

Description

Pile-supported reinforced embankment model test device

Technical Field

The utility model belongs to the technical field of road model test equipment, and particularly relates to a pile-supported reinforced embankment model test device.

Background

Pile-supported embankment is rapidly and widely used due to its good engineering performance, and a series of researches on the structure are carried out by a plurality of scholars through model tests. Among them, the soil arching effect caused by differential settlement has been the center of gravity of research of many scholars.

The movable door experiment of the Taisha base, which is innovated for researching the soil arch effect, proves that: shear stress caused by relative displacement between the granular materials is an important factor in generating the soil arching effect. Subsequent numerous scholars study the soil arch effect by improving the model test device, but the movable door test neglects the settlement of foundation soil in the embankment filling process on one hand; on the other hand, the displacement of the embankment filler is artificially controlled. In addition, as the pile-supported embankment is developed into the pile-supported reinforced embankment, the reinforced material is also concerned about the influence of stress redistribution, pile-soil stress ratio and pile body load bearing ratio in embankment filler, but most of the reinforced material is directly paved in the filler in the process of carrying out model test research, the peripheral boundary is not fixed, and the difference from the actual situation is larger, so that the test result of the model test is inevitably influenced.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a pile-supported reinforced embankment model test device aiming at the defects of the prior art, which can truly simulate the pile-supported reinforced embankment and ensure the test result of the model test.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows:

a pile-supported reinforced embankment model test device comprises a measuring unit, an upper box body and a lower box body, wherein the upper box body and the lower box body are used for accommodating an embankment model, the upper box body is connected with the lower box body through a connecting piece, the embankment model comprises four model piles, simulation soil among the piles and filler filled in the upper box body, the four model piles are arranged corresponding to four corners of the lower box body, and a reinforced material is arranged at the junction of the upper box body and the lower box body; the measuring unit is arranged in the embankment model and used for measuring the internal soil pressure, settlement and deformation of the reinforced material of the embankment model.

Preferably, the measuring unit comprises a settlement rod, a strain gauge and a plurality of miniature soil pressure sensors, and the strain gauge is adhered to the lower surface of the reinforced material; the miniature soil pressure sensors are arranged in the filler at intervals from top to bottom; the settlement rod is arranged at the central positions of the four model piles, the top of the settlement rod is not higher than the top of the model pile, and the central positions of the four model piles and the top of one model pile are provided with a miniature soil pressure sensor.

Preferably, the two miniature soil pressure sensors are arranged above the settlement rod and the two adjacent model piles at intervals, and the two miniature soil pressure sensors corresponding to the settlement rod and the model piles are arranged on the upper side and the lower side of the reinforced material respectively.

Preferably, still include the range unit spare, the range unit spare includes laser range finder and track, laser range finder sets up on the top track of last box for confirm the pile bolck of model stake, the center of two adjacent model stakes, the central point of four model stakes puts and the vertical displacement on embankment model surface.

Preferably, the track comprises a longitudinal track and a transverse track, and the longitudinal track and the transverse track are both provided with scale marks; the longitudinal rail is arranged on one longitudinal side edge of the top of the upper box body, and the transverse rail is perpendicular to the longitudinal rail and can slide along the longitudinal rail; the laser range finder is arranged on the transverse track and can slide along the transverse track.

Preferably, the upper box body comprises a base, four steel stand columns and four side walls, the base is of a frame structure with a hollow middle part, the lower ends of the steel stand columns are fixedly connected with four corners of the base through connecting pieces, the side walls comprise a front toughened glass plate, a rear side plate, a left side plate and a right side plate, clamping plates are arranged on the inner sides of the steel stand columns, and the edges of the toughened glass plate, the rear side plate, the left side plate and the right side plate are respectively and correspondingly arranged between the steel stand columns and the clamping plates; and the fillers in the upper box body are filled and tamped layer by layer.

Preferably, the tempered glass plate is arranged on the front side surface of the upper box body, and scale marks are coated on the edges of the two sides of the tempered glass plate; the inner sides of the edges of the toughened glass plate, the right side plate and the left side plate are long clamping plates, the outer sides of the right side plate and the left side plate are provided with obliquely crossed supporting rods, and the upper end and the lower end of each supporting rod are respectively connected and fixed with the end parts of the steel stand columns; the rear side plate is fixedly connected with the short clamping plates and the steel upright posts through connecting pieces; the short clamping plates and the transverse ribs are arranged at intervals, and two ends of each transverse rib are fixedly connected with the corresponding short clamping plates. The rear side plate, the left side plate and the right side plate are all made of wood plates.

Preferably, the base comprises four long bottom plates and side frames, the side frames are vertically fixed on the upper surface of the bottom plate, angle steel is arranged outside each two adjacent side frames, the cross sections of the steel upright columns are matched with the cross sections of the angle steel and are in a right-angle shape, the lower ends of the steel upright columns are arranged between the angle steel and the side frames, and the steel upright columns are fixedly connected with the angle steel through connecting pieces; the lower box body is a hollow shell with an opening at the upper part, and a convex brim at the top of the lower box body is fixedly connected with the bottom plate through a connecting piece.

Preferably, the device also comprises a gantry crane, the gantry crane is arranged above the upper box body, a chain reversing box capable of moving along the cross beam and a drag chain for lifting the upper box body are arranged on the cross beam of the gantry crane, the upper part of the drag chain is connected with the chain reversing box, and the lower end of the drag chain can be connected with a hanging ring on the outer side of the upper box body.

Preferably, the bottom of the lower box body is provided with a slide rail.

Preferably, the reinforced material is a geosynthetic material, and the peripheral edge of the geosynthetic material is fixed between the upper box body and the lower box body; the simulation soil between the piles is high-density sponge, and the compressive strength of the simulation soil between the piles is 50-200 KPa.

Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: compared with the prior art, the lower model piles and the simulated soil among the piles are arranged in the lower box body, the upper box body is filled with the filling materials, the reinforced material is laid at the junction of the upper box body and the lower box body, the periphery boundary of the embankment model is fixed by means of the upper box body and the lower box body, the formed embankment model can simulate the actual scene of the pile-supported reinforced embankment, and the authenticity of the test effect is further ensured; the model piles are of an assembled structure, so that various pile spacing tests can be realized, and the simulated soil among the piles can more completely reflect the settlement process of the foundation in the embankment filling process; the measuring unit in the embankment model can be used for measuring the internal soil pressure and settlement of the embankment model and the deformation of the reinforced material, and theoretical basis is provided for researching the pile-supported reinforced embankment. The utility model can truly simulate the pile-supported reinforced embankment and ensure the test result of the model test.

Drawings

Fig. 1 is a schematic structural diagram of a pile-supported reinforced embankment model test device according to an embodiment of the present invention;

FIG. 2 is a side view of the upper and lower housings of FIG. 1;

FIG. 3 is a rear view of the upper and lower housings of FIG. 1;

FIG. 4 is a schematic diagram of a measurement unit according to an embodiment of the present invention;

FIG. 5 is a schematic view of the base of FIG. 1;

FIG. 6 is a top view of a ranging assembly in an embodiment of the present invention;

in the figure: 1. the device comprises an upper box body 1-1, steel upright posts 1-2, a base 1-2-1, a bottom plate 1-2-2 and a frame; 1-3 parts of supporting rods, 1-4 parts of transverse ribs, 1-5 parts of angle steel, 1-6 parts of long clamping plates, 1-7 parts of short clamping plates, 1-8 parts of connecting holes and 1-9 parts of hanging rings;

2. the box body comprises a lower box body 3, a reinforced material 4, a toughened glass plate 5-1, a left side plate, a right side plate 5-2 and a rear side plate; 6. model piles, 7, simulation soil among piles, 8, gantry cranes, 9 and slide rails;

10. the distance measuring device comprises a distance measuring assembly 10-1, a laser distance measuring instrument 10-2 tracks 10-2-1, longitudinal tracks 10-2-2 and transverse tracks; 11. 12 parts of filler, 12 parts of measuring unit, 12-1 parts of miniature soil pressure sensor, 12-2 parts of strain gauge, 12-3 parts of settling rod.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly and completely understood, the technical solutions in the embodiments of the present invention are described below with reference to the accompanying drawings and specific embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

As shown in fig. 1-3, the pile supported reinforced embankment model test device provided by the utility model comprises a measurement unit 12, an upper box 1 and a lower box 2 for accommodating an embankment model, wherein the upper box 1 is connected with the lower box 2 through a connecting piece, the embankment model comprises four model piles 6 arranged in the lower box 2, simulation soil 7 among the piles and a filler 11 filled in the upper box 1, the four model piles are arranged corresponding to four corners of the lower box, and a reinforced material is arranged at the junction of the upper box and the lower box; the measuring unit 12 is disposed inside the embankment model, and is configured to measure internal soil pressure, settlement, and deformation of the reinforced material of the embankment model. Wherein, the connecting piece adopts connecting bolt.

In an embodiment of the present invention, as shown in fig. 4, the measuring unit 12 includes a settling rod 12-3, a strain gauge 12-2 and a plurality of micro soil pressure sensors 12-1, wherein the strain gauge 12-2 is adhered to the lower surface of the reinforced material 3; a plurality of miniature soil pressure sensors 12-1 are arranged in the filler 11 at intervals from top to bottom; the settlement rod 12-3 is arranged at the center of the four model piles 6, the top of the settlement rod 12-3 is not higher than the top of the model piles 6, and the center of the four model piles 6 and the top of one model pile 6 are provided with the miniature soil pressure sensor 12-1. Two miniature soil pressure sensors 12-1 are arranged above the settlement rod 12-3, one model pile 6 and two adjacent model piles 6 at intervals, and the two miniature soil pressure sensors 12-1 corresponding to the settlement rod 12-3 and the model piles 6 are respectively arranged on the upper side and the lower side of the reinforced material 3.

The technical scheme is further optimized, as shown in fig. 1-3 and 6, the embankment structure is further comprises a laser 10, a laser distance measuring device 10 and a laser distance measuring device 10, the laser distance measuring device 10, and a distance measuring device 10, the laser distance measuring device 10-1, 2, the laser distance measuring device 10-1, the top of the laser distance measuring device 10-1 of the upper box body 1 is used for the box body 1, the top of the laser distance measuring device 10-2 is used for confirming the laser 1 is used for confirming the laser distance measuring device 6, the top of the laser distance measuring device 10-2 on the top of the laser distance measuring device 10-2 of the top track 10-1 is arranged on the top track 10-2 for confirming the top of the determining of the top of the determining of the laser distance measuring is used for confirming the pile 6, the determining of the pile 6, the top of the center of the determining of the top of the determining of the pile 6, the center of two adjacent model stake 6, the center of model stake 6 is between the top of the center of two model stake 6, the center of model stake 6 confirm the center of model stake 6, the center of model stake 6 is confirmed to confirm the center of model stake 6. The track 10-2 comprises a longitudinal track 10-2-1 and a transverse track 10-2-2, and scale marks are arranged on the longitudinal track 10-2-1 and the transverse track 10-2-2; the longitudinal rail 10-2-1 is arranged on one longitudinal side edge of the top of the upper box body 1, and the transverse rail 10-2-2 is perpendicular to the longitudinal rail 10-2-1 and can slide along the longitudinal rail 10-2-1; the laser range finder 10-1 is arranged on the transverse track 10-2-2 and can slide along the transverse track 10-2-2. When the laser range finder is manufactured specifically, the laser range finder can be driven to move along a transverse track by a transverse moving mechanism, the transverse track is driven to move along a longitudinal track by a longitudinal moving mechanism, and the transverse moving mechanism and the longitudinal moving mechanism are controlled by a controller; meanwhile, the laser range finder can be connected with the controller and used for recording the measured data in real time. The position of the miniature soil pressure sensor can be accurately positioned when the miniature soil pressure sensor is arranged in the filler by means of the laser range finder, and the laser range finder can be used for reflecting the vertical displacement of any point on the surface layer of the embankment in real time in the test process.

As a preferred structure, as shown in fig. 1-3, the upper box body 2 includes a base 1-2, four steel upright posts 1-1 and four side walls, the base 1-2 is a frame structure with a hollow middle part, the lower ends of the steel upright posts 1-1 are connected and fixed with the four corners of the base 1-2 through connecting pieces, the side walls include a front tempered glass plate 4, a rear side plate 5-2, a left side plate and a right side plate 5-1, a clamping plate is arranged on the inner side of the steel upright post 1-1, and the edges of the tempered glass plate 4, the rear side plate 5-2, the left side plate and the right side plate 5-1 are respectively and correspondingly arranged between the steel upright post 1-1 and the clamping plate; and the internal filler 11 of the upper box body 1 is tamped by filling in layers. Wherein, the rear side plate 5-2, the left side plate and the right side plate 5-1 are all made of wood plates; the thickness of each layer of the filler 11 after being compacted is 10cm, and the miniature soil pressure sensor is correspondingly arranged in the middle of each layer of the filler 11. Specifically, the internal clearance of the upper case is 1.0 × 1.0 × 1.2m (length × width × height), and the internal clearance of the lower case is 1.0 × 1.0 × 0.5m (length × width × height).

During specific manufacturing, the toughened glass plate 4 is arranged on the front side face of the upper box body 1, scale marks are coated on the edges of two sides of the toughened glass plate 4, long clamping plates 1-6 are arranged on the inner sides of the edges of the toughened glass plate 4, the left side plate and the right side plate 5-1, obliquely crossed supporting rods 1-3 are arranged on the outer sides of the left side plate and the right side plate 5-1, and the upper end and the lower end of each supporting rod 1-3 are respectively connected and fixed with the end portions of the steel upright posts 1-1; the inner side of the edge of the rear side plate 5-2 is sequentially provided with a plurality of short clamping plates 1-7 from top to bottom, the outer side of the edge is correspondingly provided with horizontal transverse ribs 1-4, and the rear side plate 5-2 is fixedly connected with the short clamping plates 1-7 and the steel upright posts 1-1 through connecting pieces; the short splints 1-7 and the transverse ribs 1-4 are arranged at intervals, and two ends of each transverse rib 1-4 are fixedly connected with the corresponding short splints 1-7. When the steel upright post is installed, the edges of the toughened glass plate 5-1 and the rear plate 5-2 are inserted into the gap between the long clamping plate 1-6 and the steel upright post 1-1, and the vertical edges of the left side plate 5-1 and the right side plate 5-1 are inserted into the gap between the short clamping plate 1-7 and the steel upright post 1-1 and are fixedly clamped through connecting bolts.

During the specific manufacturing, the clamping plates are welded and fixed on the inner side of the steel upright, the size of the toughened glass plate 4 is 1.2m multiplied by 1.0m multiplied by 8mm (length multiplied by width multiplied by thickness), the size of the rear side plate 5-2 is 1.2m multiplied by 1.0m multiplied by 15mm (length multiplied by width multiplied by thickness), the length of the long clamping plate 1-6 is 1.0m, and the rear side plate is fixed through connecting bolts penetrating through the transverse ribs and connecting holes in the steel upright; the left side plate and the right side plate 5-1 are 1.0m multiplied by 0.3m multiplied by 15mm (length multiplied by width multiplied by thickness), the short splint 1-7 is 150mm long, and the left side plate and the right side plate are fixed through connecting bolts penetrating through connecting holes on the supporting rod and the steel upright post. The model pile 6 is composed of a steel pipe with the diameter not less than 50mm and a steel plate with the thickness not less than 8mm, the size of the top surface of the pile cap of the model pile 6 is 20cm multiplied by 20cm, the model pile adopts an assembly structure, and the size of the pile cap and the distance between the piles can be changed according to the test requirement. The rear side plate can be formed by overlapping 4 boards with the same size, so that filling of the embankment filler is facilitated, and damage to a monitoring instrument during discharging through the material moving port can be avoided.

As shown in fig. 5, the base 1-2 comprises four long bottom plates 1-2-1 and frames 1-2-2, the frames 1-2-2 are vertically fixed on the upper surface of the bottom plate 1-2-1, angle steel 1-5 is arranged outside two adjacent frames 1-2-2, the cross section of the steel upright column 1-1 is matched with that of the angle steel 1-5 and is in a right-angle shape, the lower end of the steel upright column 1-1 is arranged between the angle steel 1-5 and the frames 1-2-2, and the steel upright column 1-1 is fixedly connected with the angle steel 1-5 through a connecting piece; the lower box body 2 is a hollow shell with an opening at the upper part, and a convex brim at the top of the lower box body 2 is fixedly connected with the bottom plate 1-2-1 through a connecting piece.

In order to facilitate the hoisting of the upper box body 1, as shown in fig. 1, the hoisting device further comprises a gantry crane 8, the gantry crane 8 is arranged above the upper box body 1, a beam of the gantry crane 8 is provided with an inverted chain box 8-1 capable of moving along the beam and a drag chain (not shown in the figure) for hoisting the upper box body 1, the upper part of the drag chain is connected with the inverted chain box 8-1, and the lower end of the drag chain is connected with an outer hoisting ring 1-9 of the upper box body 1. The gantry crane moves the upper box body through the traction of the traction chain. Meanwhile, in order to facilitate horizontal displacement of the lower box body 2, the sliding rail 9 is installed at the bottom of the lower box body 2, the sliding rail is adopted to move the lower box body, so that the labor intensity of workers can be reduced, and meanwhile, the protection of the test workers is facilitated.

When the reinforced material is manufactured specifically, the reinforced material 3 is made of a geosynthetic material, the size of the geosynthetic material is slightly larger than that of the base 1-2, the peripheral edge of the geosynthetic material is fixed between the upper box body 1 and the lower box body 2 through the self weight of the upper box body and connecting bolts penetrating through connecting holes in the edges of the base and the lower box body, and the edge of the geosynthetic material can be fixed by means of the split upper box body and the split lower box body; the inter-pile simulated soil 7 is high-density sponge, the compressive strength of the inter-pile simulated soil 7 is 50-200Kpa, the settlement change of the foundation in the embankment filling process can be reflected more completely, and sufficient deformation can be guaranteed in the test process.

The specific application method of the utility model is as follows:

1. preparing a test tool: a series of instruments and equipment required for this test were prepared prior to the start of the test, including: the miniature soil pressure sensor 12-1, the sedimentation rod 12-3 and other equipment are used for debugging and calibrating instruments to ensure effective use;

2. arranging model piles 6 and simulation soil 7 between piles: after the upper box body 1 is hoisted by using a gantry crane 8, the lower box body 2 is moved out by using a slide rail 9 and a model pile 6, simulation soil 7 among piles and a settlement plate 12-3 are arranged;

3. laying a reinforced cushion layer: after the model pile 6, the simulation soil 7 among the piles and the settlement plates 12-3 are arranged, a miniature soil pressure sensor 12-1 is respectively arranged at the center of the top of the model pile 6, the centers of two piles and the centers of four piles; then paving 1cm thick filling soil; then, determining the pile tops, the centers of two piles and the center positions of four piles of the model pile 6 by using a laser range finder 10-1, and burying a miniature soil pressure sensor 12-1 respectively; continuously filling 2cm of soil, then paving a geosynthetic material as a reinforced material 3, fixing a strain gauge 12-2 on the geosynthetic material 3, continuously filling 2cm of filler 11, then embedding a miniature soil pressure sensor 12-1, and then fixing the upper box body 1 and the lower box body 2 by utilizing a slide rail 9, a gantry crane 8 and a bolt combination penetrating through a connecting hole 1-8 on the base;

4. filling an embankment: and after the reinforced cushion layer is laid, filling the embankment. The embankment fillers 11 are filled and tamped layer by layer, the compaction degree is controlled by adopting a method of controlling the weight of each layer of the fillers 11, one layer is arranged every 10cm, and white lime is spread among the layers to visually show the displacement of the fillers 11. Namely, the weight of each layer of the filler 11 is consistent, and the layer is tamped by a tamping hammer to the thickness of 10cm, so that the density and the compaction degree of each layer of the filler 11 are consistent; when the micro soil pressure sensor 12-1 is buried in one layer and the filler 11 with the height of 10cm is filled, recording the data of each testing instrument at the moment after the numerical values of the micro soil pressure sensor 12-1, the strain gauge 12-2 and the settlement rod 12-3 are stable, and then continuing to fill the next layer; after filling of the embankment is completed, reading the numerical value of the laser distance meter 10-1, then sealing and maintaining the embankment for 24 hours, and finally reading the numerical values of the miniature soil pressure sensor 12-1, the strain gauge 12-2, the settlement rod 12-3 and the laser distance meter 10-1.

The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims (10)

1. The utility model provides a pile type adds muscle embankment model test device which characterized in that: the embankment model comprises four model piles, simulation soil among the piles and filler filled in the upper box body, wherein the four model piles are arranged corresponding to four corners of the lower box body, and a reinforced material is arranged at the junction of the upper box body and the lower box body; the measuring unit is arranged in the embankment model and used for measuring the internal soil pressure, settlement and deformation of the reinforced material of the embankment model.

2. The pile-supported reinforced embankment model test device according to claim 1, wherein: the measuring unit comprises a settlement rod, a strain gauge and a plurality of miniature soil pressure sensors, and the strain gauge is adhered to the lower surface of the reinforced material; the miniature soil pressure sensors are arranged in the filler at intervals from top to bottom; the settlement rod is arranged at the central positions of the four model piles, the top of the settlement rod is not higher than the top of the model pile, and the central positions of the four model piles and the top of one model pile are provided with a miniature soil pressure sensor.

3. The pile-supported reinforced embankment model test device according to claim 2, wherein: the top of subsiding pole and two adjacent model piles all is equipped with two miniature soil pressure sensor at an interval, and subsides two miniature soil pressure sensor that pole and model pile top correspond and set up respectively in the upper and lower both sides of reinforced material.

4. The pile-supported reinforced embankment model test device according to claim 1, wherein: the device comprises an upper box body and a lower box body, and is characterized by further comprising a distance measuring assembly, wherein the distance measuring assembly comprises a laser distance meter and a track, and the laser distance meter is arranged on the track at the top of the upper box body and used for determining the pile tops of model piles, the centers of two adjacent model piles, the central positions of four model piles and the vertical displacement of the surface of the embankment model; the track comprises a longitudinal track and a transverse track, and scale marks are arranged on the longitudinal track and the transverse track; the longitudinal rail is arranged on one longitudinal side edge of the top of the upper box body, and the transverse rail is perpendicular to the longitudinal rail and can slide along the longitudinal rail; the laser range finder is arranged on the transverse track and can slide along the transverse track.

5. The pile-supported reinforced embankment model test device according to claim 1, wherein: the upper box body comprises a base, four steel stand columns and four side walls, the base is of a frame structure with a hollow middle part, the lower ends of the steel stand columns are fixedly connected with four corners of the base through connecting pieces, the side walls comprise a front toughened glass plate, a rear side plate, a left side plate and a right side plate, clamping plates are arranged on the inner sides of the steel stand columns, and the edges of the toughened glass plate, the rear side plate, the left side plate and the right side plate are respectively and correspondingly arranged between the steel stand columns and the clamping plates; and the fillers in the upper box body are filled and tamped layer by layer.

6. The pile-supported reinforced embankment model test device according to claim 5, wherein: the toughened glass plate is arranged on the front side face of the upper box body, and the edges of two sides of the toughened glass plate are coated with scale marks; the inner sides of the edges of the toughened glass plate, the right side plate and the left side plate are long clamping plates, the outer sides of the right side plate and the left side plate are provided with obliquely crossed supporting rods, and the upper end and the lower end of each supporting rod are respectively connected and fixed with the end parts of the steel stand columns; the rear side plate is fixedly connected with the short clamping plates and the steel upright posts through connecting pieces; the short clamping plates and the transverse ribs are arranged at intervals, and two ends of each transverse rib are fixedly connected with the corresponding short clamping plates.

7. The pile-supported reinforced embankment model test device according to claim 5, wherein: the base comprises four long bottom plates and side frames, the side frames are vertically fixed on the upper surface of the bottom plate, angle steel is arranged outside two adjacent side frames, the cross sections of the steel upright columns are matched with the cross sections of the angle steel and are in a right-angle shape, the lower ends of the steel upright columns are arranged between the angle steel and the side frames, and the steel upright columns are fixedly connected with the angle steel through connecting pieces; the lower box body is a hollow shell with an opening at the upper part, and a convex brim at the top of the lower box body is fixedly connected with the bottom plate through a connecting piece.

8. The pile-supported reinforced embankment model test device according to claim 1, wherein: the gantry crane is arranged above the upper box body, a chain reversing box capable of moving along the cross beam and a traction chain used for lifting the upper box body are arranged on the cross beam of the gantry crane, the upper portion of the traction chain is connected with the chain reversing box, and the lower end of the traction chain can be connected with a hanging ring on the outer side of the upper box body.

9. The pile-supported reinforced embankment model test device according to claim 1, wherein: the bottom of the lower box body is provided with a slide rail.

10. The pile-supported reinforced embankment model test device according to any one of claims 1 to 9, wherein: the reinforced material is a geosynthetic material, and the peripheral edge of the geosynthetic material is fixed between the upper box body and the lower box body; the simulation soil between the piles is high-density sponge, and the compressive strength of the simulation soil between the piles is 50-200 KPa.

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