CN115753376A - Multi-scene simulation miniature pile reinforcement model test device - Google Patents

Abstract

The invention relates to a multi-scene simulation miniature pile reinforcement model test device. The device comprises a model box and a sliding baffle plate which can slide along the left-right direction, wherein two guide rails extending along the left-right direction are symmetrically arranged on the front side and the rear side of a bottom plate in parallel; the side slope forming pressing plate comprises a horizontal pressing plate and a forming inclined plate which are mutually hinged through a hinged shaft, and the horizontal pressing plate, the forming inclined plate and the hinged shaft can stretch in the left and right directions; a sliding cross beam of the loading device is assembled on the sliding rail in a sliding mode through sliding parts at two ends so as to slide freely along the sliding rail, and a servo jack is arranged below the sliding cross beam and used for loading the formed side slope; the rainfall simulation device comprises a water pump, a water pipe, a spray pipe and a plurality of spray heads arranged on the spray pipe; the earthquake simulation device comprises an upper platform, a lower platform and a plurality of springs connected between the upper platform and the lower platform, the upper platform is also correspondingly provided with a longitudinal vibration exciter and a transverse vibration exciter for simulating earthquake waves, and the model box and the loading device are fixed on the upper platform; and (5) pouring a tool.

Description

A multi-scenario simulation micro-pile reinforcement model test device

technical field

The invention relates to a multi-scenario simulation miniature pile reinforcement model test device.

Background technique

Landslide disasters often occur in nature, which often cause huge damage to industrial and agricultural production and people's life and property safety. Regarding the prevention and control of landslides, great progress has been made at home and abroad. Commonly used prevention and control measures for landslides include: drainage, anti-slide pile reinforcement, retaining wall method, weight reduction and slope cutting presser feet, etc. At present, in slope engineering, the application of micropile has become very extensive. A large number of engineering examples show that micro piles have relatively little disturbance to the slide body, have strong site adaptability and strong bending resistance, and can play a certain anchoring effect on the slide bed and slide body, making the integrity of the landslide There is a significant improvement, and it also contributes to the improvement of the comprehensive shear strength of the sliding surface. However, there is still a lack of scientific theoretical support for the precise use of micro piles in various scenarios to achieve better control effects. However, the existing test devices have a single function, and the scenarios that can be simulated are very limited, such as different rainfall and different levels. Earthquake, emergency rescue, and different pressure scenarios, etc., when corresponding to different pile spacing, the research on the bearing performance of micro piles, the existing technology lacks available test equipment. Details are as follows:

First of all, in slope prevention and control engineering, the size of pile spacing plays a decisive role in the generation of soil arching effect. When the sliding force generated by the sliding body acts on the anti-sliding piles, the coupling between the piles and the soil will generate soil arches, which improves the anti-sliding effect of the structure. Traditionally, the selection of pile spacing is relatively conservative. In order to consider economic benefits, it is of great significance to determine a reasonable pile spacing. In order to study the soil arching effect and determine a reasonable pile spacing, it is necessary to study the influence of the size of the pile spacing on the formation of the soil arching effect. Indoor model tests are often carried out to observe the stress-strain characteristics of the pile body. In the indoor model test, it is difficult to control the shape of the slope. On the one hand, it is difficult to control the angle of the slope; on the other hand, the model box of the conventional test device is a square box with a fixed size. The problem of large soil volume and low efficiency.

In addition, rainfall, earthquakes, soil weight, and surface water immersion may all cause landslides. For different causes, it is often necessary to analyze landslides through targeted experiments.

Furthermore, after the landslide occurs, in order to prevent the secondary collapse, the slope needs to be reinforced urgently. At this time, it is necessary to use non-water-reactive high-molecular polymer material to temporarily pour and quickly form micro-pile. The characteristic of this material is to generate The reaction is an anhydrous reaction, with short setting time and fast strength improvement. It can provide 90% of the ultimate strength in 15 minutes, and has high tensile and compressive strength; no maintenance and no pollution, so it is considered to use this material for slope repair emergency support. However, the specific application experience of this material requires simulation tests to obtain empirical data, so it is also necessary to simulate the micro pile forming simulation of the material in emergency rescue scenarios and the performance research after forming.

Contents of the invention

The purpose of the present invention is to provide a multi-scenario simulation that can simulate rainfall, earthquakes, emergency rescue and the combination of various scenes, and can realize the multi-scenario simulation of ordinary micro-piles and non-water reactive polymer micro-piles. Micro-pile reinforcement model test device.

The technical scheme of the present invention is as follows: a multi-scenario simulation mini-pile reinforcement model test device includes:

The model box is a rectangular box structure with an upper opening, including fixedly connected front, rear and right side baffles and a bottom plate, and also includes a sliding baffle that can slide in the left and right directions. The guide rail extending in the left and right directions, the lower sides of the sliding baffle are slidably installed on the guide rail through the slider, the guide rail is provided with a locking structure for locking the slider relative to the guide rail, and the front and rear side baffles are respectively provided with a row of Bolt holes extending in the left and right directions can be used to fix the upper part of the sliding baffle relative to the front and rear side baffles through bolts;

Slope forming pressure plate, including horizontal pressure plate and forming slant plate hinged to each other through hinge shaft, horizontal pressure plate, forming slant plate and hinge shaft can expand and contract in the left and right direction;

The loading device includes a plurality of columns and two fixed beams fixed on the top of the columns. The two fixed beams are symmetrically arranged on the front and rear sides above the model box, and slide rails are respectively laid on the two fixed beams. Between the two slide rails Two sliding beams are erected, and the sliding beams are slidably assembled on the slide rails through the sliding parts at both ends so as to slide freely along the slide rails. Servo jacks are installed under the sliding beams to load the formed slope;

The rainfall simulation device includes a water pump, a water pipe, a spray pipe and a plurality of nozzles arranged on the spray pipe, and the spray pipe is slidably assembled between two slide rails through a sliding pipe clamp seat that can move along the slide rail;

The earthquake simulation device includes upper and lower platforms and a plurality of springs connected between them. The upper platform is also provided with a longitudinal exciter and a transverse exciter for simulating earthquake shock waves. The model box and the loading device are fixed on the upper platform;

The pouring tool includes a steel pipe for inserting into the slope soil to simulate a pile hole and a pouring pipe fixed in the lower part of the steel pipe, and a plurality of seepage holes are arranged at the bottom and side of the pouring bucket.

Further, the right side baffle is made of transparent material.

Furthermore, three groups of bolt holes arranged in the up and down directions are evenly distributed on the front and rear side baffles along the left and right directions, each group includes two rows of symmetrically arranged bolt holes, and the sliding baffle is selectively connected with one of the groups of bolt holes through right-angle steel. The hole connection is fixed.

Further, the chute is symmetrically arranged on the right side baffle and the sliding baffle, and the chute is arranged horizontally, and an adjusting slider is slidably installed in the chute, and the left and right sides of the forming slant plate are symmetrically provided with slant plate chute , the outer end of the adjustment slider is slidingly matched with the chute of the inclined plate.

Further, the right end of the hinge shaft is fixed with a protractor plate for detecting the inclination angle of the forming inclined plate.

Further, the sliding pipe clamp seat is connected to the spray pipe through a pipe clamp, and the pipe clamp can be rotatably assembled on the sliding pipe clamp seat along a vertical rotation axis.

Further, the lower parts of both ends of the sliding beam are respectively provided with L-shaped supporting plates, and the supporting plates are attached to the lower surfaces of the corresponding fixed beams.

Beneficial effects of the present invention: a multi-scenario simulation mini-pile reinforcement model test device of the present invention has the following advantages that cannot be replaced by the prior art when in use:

(1) It is convenient to study the characteristics of micro piles with different pile spacings. The size of the model box can be adjusted freely to adapt to different pile spacings, and the loading position of the corresponding loading device can also be adjusted accordingly. For different pile spacings on soil The research on the influence of the arch effect is very convenient; and for the research on the spacing of small piles, the amount of soil filling in the model box does not need to be so much, which saves manpower and improves the test efficiency;

(2) It can simulate a variety of realistic scenarios, such as heavy rain, light rain, earthquake, earthquake plus rain, emergency rescue construction to prevent secondary landslides after landslides, etc., through the controller according to the frequency and amplitude of the actual earthquake With data, control the exciter to vibrate against the data, thereby simulating the real earthquake scene, and then simulating the landslide resistance performance of different micro-pile, different pile spacing, and different material micro-pile in this scene; similarly, Research on various data in rainy conditions; it is also possible to simulate rescue construction in an emergency rescue environment, for example, after the first landslide and in the case of aftershocks, there will be a second landslide, and the pre-set program will first carry out the first A simulation of a first earthquake leading to the first landslide, followed by a second aftershock 20 minutes later leading to the second landslide, and the process of pouring non-water reactive polymer grout to form micropiles in between Simulate the test, and study its condensation and anti-skid conditions. In most cases, the real scene is not a simple disaster. This device is used as a test device, and the simulation of reality is the most important work. This device can be set according to the program. Using various simulation modules to work synchronously and mixedly, so as to simulate a variety of mixed complex scenarios, and can complete the experimental research of micro piles under these scenarios.

Further, the angle of slope forming is easy to control, and whether the angle is suitable can be easily verified through the angle measuring plate, and the slope forming pressure plate, the right side baffle and the sliding baffle pass through the chute, the inclined plate chute and the adjustment slider respectively. With cooperation, it can be more flexible and convenient when adjusting the angle.

Description of drawings

Fig. 1 is a structural schematic diagram of an embodiment of a multi-scenario simulation mini-pile reinforcement model test device of the present invention (an earthquake simulation device is not shown);

Fig. 2 is the structural representation of model box;

Fig. 3 is a schematic diagram of the connection structure between the sliding baffle and the front side baffle;

Fig. 4 is the combined structure schematic diagram of slope forming pressing plate;

Fig. 5 is the structural diagram before Fig. 4 combination;

Fig. 6 is the cooperative structural diagram of the forming slant plate and the sliding baffle of the slope forming pressing plate;

Fig. 7 is the structural representation of loading device;

Fig. 8 is a schematic diagram of the structure of the rainfall simulation device in use;

Fig. 9 is a structural schematic diagram of the earthquake simulation device in use;

Fig. 10 is a schematic diagram of the front view structure of the earthquake simulation device;

Fig. 11 is a schematic view of the bottom structure of Fig. 10;

Fig. 12 is a structural schematic diagram of the pouring tooling used for pouring non-water reactive polymer micro piles;

Fig. 13 is the bottom view of pouring frock;

In the figure: 1-model box, 11-front side baffle, 12-rear side baffle, 13-right side baffle, 131-chute, 132-adjusting slider, 14-sliding baffle, 15-guide rail, 16-slider, 17-bolt hole, 18-right angle steel, 19-stud bolt, 20-ordinary bolt, 2-slope forming pressure plate, 21-horizontal pressure plate, 22-forming inclined plate, 221-inclined plate chute , 23-articulated shaft, 24-angle plate, 25-connecting plate, 3-loading device, 31-column, 32-fixed beam, 33-sliding rail, 34-sliding beam, 341-sliding part, 35-servo jack , 36-pallet, 4-rainfall simulation device, 41-water pump, 42-water pipe, 43-PVC spray pipe, 44-pipe clamp and sliding pipe clamp seat, 45-nozzle, 5-earthquake simulation device, 51-upper Platform, 52-lower platform, 53-spring, 54-longitudinal vibrator, 55-transverse vibrator, 6-pouring tooling, 61-seepage hole, 62-steel pipe, 7-3D laser scanner, 8-sealing Block with a thin plate.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention, that is, the described embodiments are only some of the embodiments of the present invention, but not all of the embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

An embodiment of a multi-scenario simulation micro-pile reinforcement model test device of the present invention: the test device is used to conduct experimental research on micro-pile, as shown in Figure 1-13, the main structure includes a model box 1, a slope forming Pressing plate 2, loading device 3, rainfall simulation device 4, earthquake simulation device 5, pouring tooling 6.

As shown in Figures 1 and 2, the model box 1 is a square box structure as a whole, including a bottom plate, a front side baffle 11, a rear side baffle 12, a right side baffle 13 and a sliding baffle 14 on the left side. The recommended size of 1 is 2m, 1.5m, and 1.5m in length, width, and height respectively. The model box 1 is a steel plate assembly structure, and the plates other than the sliding baffle 14 are all fixed structures. The right side corresponding to the sliding baffle 14 The side baffles 13 are made of transparent material, such as PC transparent board, transparent nylon, acrylic and the like. There are guide rails 15 parallel to each other at the corner where the bottom plate connects with the front side panel and the rear side panel. The cross section of the guide rail 15 is in the shape of a circular platform. The two guide rails 15 are respectively slidably equipped with sliders, and the two sliders are respectively welded and fixed. On the two lower corners of the sliding baffle 14, the sliding baffle 14 relies on two sliders to slide freely along the guide rail 15, and the two sliders are respectively provided with locking nuts, which can be used to connect the two sliders to each other. It is locked on the guide rail 15 so that the slider cannot move along the guide rail 15. As shown in FIG. 2 , a row of spaced bolt holes are respectively arranged on the front side baffle 11 and the rear side baffle 12 , and the two rows of bolt holes are located in the same horizontal plane and coaxially arranged correspondingly. When the sliding baffle 14 moves to a certain place and needs to be locked, it can be fixed in the bolt hole closest to the sliding baffle 14 on the outside of the sliding baffle 14 (that is, the side facing the outside of the box), and the bolts can be used to lock the sliding baffle. Plate 14 is stopped, and after stopping, sliding baffle 14 can't continue to move, and at this moment box body can be filled with soil, through the setting of this structure, the volume of model box 1 can be freely adjusted in size, in the distance between small piles When researching the miniature piles, adjust the position of the sliding baffle 14 to adjust to a small-volume model box 1. At this time, the amount of soil filling in the model box 1 is small, and the cleaning workload after the test is completed is also correspondingly reduced. Moreover, the soil filling speed is fast, and the test efficiency is greatly improved.

For the research on the pile spacing of micro piles, some pile spacings are more commonly used. At this time, the sliding baffle 14 is often required to be in some commonly used positions. In order to improve the bearing capacity of the sliding baffle 14 during frequent use, in Three groups of bolt holes arranged vertically at intervals along the extending direction of the guide rail 15 are set on the front side baffle plate 11 and the rear side baffle plate 12, and each group is correspondingly provided with two columns of bolt holes. At this time, right angle steel 18 and bolt holes can be used , the sliding baffle 14 is firmly fixed on the front side baffle 11 and the rear side baffle 12, as shown in Figures 2 and 3, there is an angle steel 18 on the two sides of each side of the sliding baffle 14, and the angle steel 18 and the The sliding baffle 14 is uniformly provided with bolt holes one by one. The two angle steels 18 on both sides are connected to the sliding baffle 14 by stud bolts 19 and two sets of nuts. The angle steel 18 is fixed to the front side plate What used to be connected with the rear side side plate is that ordinary bolts 20 and nuts are connected.

As shown in Figures 4 and 5, the slope forming platen 2 includes a horizontal platen 21 and a forming slant plate 22. The forming slant plate 22 is hinged to each other through the hinge shaft 23, and the hinge shaft 23 is also composed of an inner shaft and an outer tube nested in each other. The horizontal pressing plate 21, the forming slant plate 22 and the hinge shaft 23 can all be stretched and adjusted along the left and right directions, so as to adapt to Depending on the size of the model box 1. The right end of the hinge shaft 23 is also fixedly provided with a protractor plate 24, and the angle of the forming slant plate 22 relative to the horizontal pressing plate 21 can be viewed through the protractor plate 24, that is, the inclination angle of the forming slant plate 22 can be checked, and this angle corresponds to Regarding the angle of the slope, the angle of the slope can be adjusted and controlled conveniently by setting the angle measuring plate 24 .

As shown in Figures 1, 4, and 6, in order to realize the positioning of the slope forming device relative to the model box 1, so that the forming position and shape of the slope meet the test standards, so on the right side baffle 13 and the sliding baffle 14 Correspondingly, two sliding grooves 131 are arranged in parallel, and the two sliding grooves 131 are arranged horizontally and symmetrically. Adjusting sliders 132 are respectively slidingly assembled in the two chute 131, and the adjusting sliders 132 can be T-shaped structures, and the corresponding chute 131 is also a T-shaped section, so that the adjusting sliders 132 installed in the chute 131 can only slide along the The groove 131 slides and cannot be disengaged from the slide groove 131 . Two slant plate chute 221 are symmetrically arranged on the left and right sides of the forming swash plate 22, and the slant plate chute 221 extends along the side length direction of the forming swash plate 22 respectively. corresponding to the sloping plate chute 221, so that the adjustment slider 132 can slide along the swash plate chute 221. Since the adjusting slider 132 can slide relative to the chute 131 or the inclined plate chute 221, it can be adjusted freely under the premise of ensuring that the horizontal pressing plate 21 is in a fixed position when the slope forming pressing plate 2 is used. The angle of inclination of the forming swash plate 22.

As shown in Figure 7, the loading device 3 is a frame structure, set up on the periphery of the model box 1, including four columns 31 and two fixed beams 32, the top of the two fixed beams 32 is provided with a slide rail 33, and the two sliding beams The two ends of 34 slide relative to the slide rail 33 through the sliding part 341 which is guided and slidably matched with the slide rail 33. Servo jacks 35 are respectively fixed on the lower part of the sliding beam 34 corresponding to the set position of the top of the formed slope, which can be used to load the formed slope with gravity, simulating scenes such as soil self-weight or collapse. L-shaped supporting plates 36 are respectively welded on the lower parts of both ends of the sliding beam 34, the supporting plate 36 extends to the below of the fixed beam 32 and fits with the lower surface of the fixed beam 32, and the supporting plate 36 moves with the sliding beam 34 relative to the The lower surface of the fixed beam 32 slides, and when the servo jack 35 loads, the upward reaction force fed back to the sliding beam 34 can be unloaded on the fixed beam 32 through the supporting plate 36 . In use, for different pile spacings, the loading positions of the two servo jacks 35 can be adjusted so as to correspond to the positions of the micro-pile, and the impact of collapse in different directions on the bearing performance of the micro-pile can be studied. In this embodiment, the height of the column 31 can be set to 2.5m, and the size of the sliding beam 34 is 0.2m×0.2m×3m. The lower end of the output end of the servo jack 35 is fixed with a steel plate, so as to increase the contact area with the soil and distribute the active force evenly.

As shown in FIG. 8 , the rainfall simulation device 4 includes a water pump 41 , a water pipe 42 , a PVC spray pipe 43 , a plurality of cross atomizing nozzles 45 , a pipe clamp and a sliding pipe clamp seat. The water pump 41 transports the water in the reservoir to the PVC spray pipe 43 through the water pipe 42, the other end of the PVC spray pipe 43 is blocked, and the PVC spray pipe 43 is fixed on the sliding pipe clamp seat by the pipe clamp, and slides The pipe clamp seat is slidably assembled on the slide rail 33 on the upper part of the fixed beam 32, and a plurality of water outlet holes are arranged at intervals in the lower part of each PVC spray pipe 43, and cross atomizing nozzles 45 are respectively installed at the water outlet holes. The pipe clamp can slide relative to the sliding pipe clamp seat, which facilitates the disassembly and assembly of the PVC spray pipe 43 . During the test, it is also necessary to set up a 3D laser scanner 7 for monitoring the deformation process of the slope, and the collected data can be used for subsequent analysis.

The rainfall simulation device 4 can adjust the rotation speed and frequency of the water pump 41 so as to simulate different types of rainfall processes, so as to study the performance of micro piles and slope deformation under different rainfall conditions.

As shown in Figure 9, the earthquake simulation device 5 includes an upper platform 51 and a lower platform 52, the lower platform 52 is placed or fixed on the ground, the upper platform 51 is supported on the lower platform 52 by a plurality of uniformly distributed springs 53, the model box 1 and The loading devices 3 are all fixed on the upper platform 51, and the upper platform 51 is correspondingly provided with a longitudinal vibrator 54 and a transverse vibrator 55 for simulating earthquakes. The controller controls each exciter to vibrate according to the set frequency and amplitude to simulate an earthquake, so as to complete the micropile test under the earthquake scene.

As shown in Figures 12 and 13, the pouring tool 6 has a cylindrical structure with an upper opening, and grout holes 61 are provided on the peripheral surface and the bottom surface. The steel bar is fixedly connected with the pouring tool 6, and the steel pipe 62 is used to pre-embed in the soil body to simulate the pile hole. After filling the soil body, the steel pipe 62 is pulled out, and at the same time, non-woven fabrics are poured from the top of the steel pipe 62 into the pouring tool 6 in the steel pipe 62. The water-reactive high-molecular polymer slurry makes the slurry slowly flow into the pile hole left after the steel pipe 62 is drawn out, and the micro-pile can be formed after the slurry is rapidly solidified.

The following describes the usage process in each scenario:

Scenario 1 is the failure bearing test of ordinary micro-pile under different pile spacing under gravity loading:

Step 1, prefabricated model piles, using reinforced concrete prefabricated piles, making circular section piles with a pile diameter of 30mm and a pile length of 800mm, the concrete grade is determined to be C20, and the pile core reinforcement method is adopted. Paste the strain gauges on the model pile;

Step 2, this example conducts a model test of 2 times the pile spacing, so adjust the sliding baffle 14 to an appropriate position, and then fix the sliding baffle 14 relative to the front side baffle 11 and the rear side baffle 12;

Step 3, cleaning the inside of the model box 1, laying a plastic film on the inner wall of the model box 1 to reduce the friction between the soil and the inner wall of the model box 1;

Step 4, fill a layer of soil in the model box 1, and fix the model piles in the model box 1 according to the distance set by the test;

Step 5, install the slope forming device according to the angle of the slope toe designed in the test, adjust the size of the slope forming device according to the width of the model box 1, place the horizontal pressing plate 21 on the soil, and adjust the forming inclined plate 22 with reference to the measuring angle plate 24 The angle relative to the horizontal pressing plate 21 is 15 to 45°, the inclined pressing plate is fixed by bolts, an earth pressure box is buried at the designed soil position, and the soil is filled in layers for compaction;

Step 6, according to the position of the slope, adjust the positions of the sliding beam 34 and the servo jack 35 in the loading device 3, so that the pressure head of the servo jack 35 is located directly above the top of the slope, and a steel plate is placed under the pressure head, so that the force is evenly distributed;

Step 7, control the servo jack 35 through the servo controller to perform step-by-step loading, and record data such as pile top displacement, pile body strain, and soil pressure;

Step 8, analyze and process the data.

Scenario 2 is to simulate the failure process of the slope under the action of heavy rainfall:

Step 1, prefabricated model piles;

Step 2, move the sliding beam 34 in the loading device 3 to both ends, install the PVC spray pipe 43 with the nozzle 45 on the pipe clamp, connect the water pipe 42 at one end of the water pump 41, and connect the water source at the other end, and place the 3D laser scanner 7;

Step 3, make a slope model in the model box 1, turn on the switch of the water pump 41, change the speed or starting frequency of the water pump 41 according to the control of the controller to simulate the rainfall process, start the test, and use the 3D laser scanner 7 to detect the slope of the slope. out of shape.

Scenario 3 is to simulate the formation of non-water reactive polymer micro-pile during landslide emergency rescue:

Step 1, first lay a layer of soil in the model box 1, compact it, fix the steel pipe 62 in the appropriate position of the model box 1, and fix the pouring tool 6 on the lower part of the steel pipe 62 by welding steel bars to simulate the pile holes in the actual project, Continue to fill and compact;

Step 2, after filling the soil, perform grouting operation into the steel pipe 62, pull out the steel pipe 62 while grouting, pour the grout directly on the pouring tool 6, and slowly flow out after being buffered by the pouring tool 6 until the steel pipe 62 is pulled out. In the pile hole, wait for it to solidify and form. After the micro-pile is formed, the polymer can be tested for gravity loading, rainfall loading, and earthquake loading.

Scenario 4 is the failure process of the slope during an earthquake:

Step 1, prefabricated micropiles;

Step 2, fix the micro-piles at the set position at the bottom of the model box 1, attach strain gauges, pre-embed the pressure cell, fill with soil, and place the 3D laser scanner 7;

Step 3: Make a slope model in the model box 1, control the earthquake simulation device 5 through the controller to generate longitudinal shock waves, transverse shock waves and mixed shock waves respectively, start the test, and use the 3D laser scanner 7 to detect the deformation of the slope.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. The scope of patent protection of the present invention is subject to the claims. Any equivalent structural changes made by using the description and accompanying drawings of the present invention, All should be included in the protection scope of the present invention in the same way.

Claims (7)

1. The utility model provides a model test device is consolidated to miniature stake of multi-scene simulation which characterized in that includes:

the model box is a rectangular box body structure with an opening at the upper part, and comprises a front baffle, a rear baffle, a right baffle, a bottom plate and a sliding baffle capable of sliding along the left and right directions, wherein the front side and the rear side of the bottom plate are symmetrically provided with two guide rails extending along the left and right directions in parallel;

the side slope forming pressing plate comprises a horizontal pressing plate and a forming inclined plate which are mutually hinged through a hinged shaft, and the horizontal pressing plate, the forming inclined plate and the hinged shaft can stretch in the left and right directions;

the loading device comprises a plurality of stand columns and two fixed cross beams fixed at the tops of the stand columns, the two fixed cross beams are symmetrically arranged on the front side and the rear side above the model box in parallel, slide rails are respectively paved on the two fixed cross beams, two sliding cross beams are erected between the two slide rails, the sliding cross beams are assembled on the slide rails in a sliding mode through sliding parts at the two ends so as to freely slide along the slide rails, and servo jacks are arranged below the sliding cross beams and used for loading the formed side slope;

the rainfall simulation device comprises a water pump, a water pipe, a spray pipe and a plurality of spray heads arranged on the spray pipe, wherein the spray pipe is assembled between two slide rails in a sliding way through a sliding pipe clamping seat capable of moving along the slide rails;

the earthquake simulator comprises an upper platform, a lower platform and a plurality of springs connected between the upper platform and the lower platform, wherein the upper platform is also correspondingly provided with a longitudinal vibration exciter and a transverse vibration exciter for simulating earthquake waves, and the model box and the loading device are fixed on the upper platform;

the pouring tool comprises a steel pipe and a pouring pipe, wherein the steel pipe is used for being inserted into a slope soil body to simulate a pile hole, the pouring pipe is fixed at the lower portion in the steel pipe, and a plurality of slurry seepage holes are formed in the bottom and the side face of the pouring barrel.

2. The multi-scenario simulation micro-pile reinforcement model test device of claim 1, wherein the right baffle is made of transparent material.

3. The multi-scene simulation micro-pile reinforcement model test device as claimed in claim 1, wherein three groups of bolt holes distributed in the up-down direction are uniformly distributed on the front and rear side baffles in the left-right direction, each group comprises two rows of symmetrically arranged bolt holes, and the sliding baffle is selectively connected and fixed with one group of bolt holes through right angle steel.

4. The multi-scene simulation micro-pile reinforcement model test device according to claim 1, wherein sliding grooves are symmetrically formed in the right side baffle and the sliding baffle, the sliding grooves are horizontally arranged, adjusting sliding blocks are slidably assembled in the sliding grooves, inclined plate sliding grooves are symmetrically formed in the left side and the right side of the forming inclined plate respectively, and the outer ends of the adjusting sliding blocks are in sliding fit with the inclined plate sliding grooves.

5. The multi-scene simulation micro-pile reinforcement model test device as claimed in claim 1, wherein a angulation plate for detecting the inclination angle of the forming inclined plate is fixed at the right end of the hinged shaft.

6. The multi-scenario simulation micro-pile reinforcement model test device according to claim 1, wherein the sliding pipe clamp base is connected with the shower pipe through a pipe clamp, and the pipe clamp can be rotatably assembled on the sliding pipe clamp base along a rotating shaft in a vertical direction.

7. The multi-scenario simulation micro-pile reinforcement model test device according to claim 1, wherein L-shaped support plates are respectively arranged at lower portions of two ends of the sliding beam, and the support plates are attached to lower surfaces of corresponding fixed beams.

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