CN214408464U

CN214408464U - Multifunctional model test box

Info

Publication number: CN214408464U
Application number: CN202120469890.6U
Authority: CN
Inventors: 徐学勇; 仵云飞; 吴泽力; 魏海
Original assignee: Huzhou Vocational and Technical College
Current assignee: Huzhou Vocational and Technical College
Priority date: 2021-03-04
Filing date: 2021-03-04
Publication date: 2021-10-15
Anticipated expiration: 2031-03-04

Abstract

The utility model relates to a civil engineering construction and hydraulic engineering construction technical field specifically are a multi-functional model test case. The utility model discloses a box, the portion of exerting pressure, the box includes the main tank body and locates the tempering organic glass on the main tank body, its characterized in that: a fixed part is arranged at the upper end of one side of the box body, and the fixed part comprises a movable rotary sleeve; the pressing part comprises a pressing part acting on the material in the box body, a fixing part fixedly connected with the rotating sleeve and a gravity code adding part for providing pressure for the pressing part, the fixing part, the pressing part and the gravity code adding part are connected through a bearing lever, and the connecting position of the pressing part and the bearing lever is positioned between the fixing part and the connecting position of the gravity code adding part and the bearing lever; the connecting position of the pressing part on the force bearing lever can be adjusted. The utility model discloses simple structure, reliable and stable can simulate various site conditions effectively, low in production cost.

Description

Multifunctional model test box

Technical Field

The utility model relates to a civil engineering construction and hydraulic engineering construction technical field specifically are a multi-functional model test case, mainly used simulate various site conditions effectively.

Background

A large number of soft cohesive soil layers are widely distributed in coastal and inland areas of China. However, the foundation formed by the soil has large settlement under the action of structures and external loads (trains, earthquakes and the like), and the settlement lasts for a long time, so that the foundation with high settlement requirements after construction (such as buildings, transition sections behind platforms and the like) is difficult to meet the requirements. Although the present calculation theory and experimental means of soft clay deformation have systematic research results, a great deal of practice shows that the calculation result is still greatly different from the actual result because the properties of the soft clay are very complex, especially the rheological property of the soft clay plays a great role in determining the engineering quality and particularly influences the control of the post-construction settlement of the building. Meanwhile, for soft soil foundations with poor engineering geological conditions, artificial treatment and reinforcement are generally needed in civil engineering construction. In the prior art, the working condition is established by using a model test, the accuracy which is not possessed by numerical simulation is achieved, and an indoor multifunctional model test device for soft soil prepressing treatment, which is disclosed as CN208907232U, comprises a soft soil containing device, a supporting device and a loading device, wherein the soft soil containing device comprises a test cylinder for containing soft soil for the test, a pressurizing plate for pressurizing and a sealing element for sealing, the test cylinder is arranged in the supporting device, the bottom end of the test cylinder is sealed, the pressurizing plate for pressurizing and the sealing element are sequentially assembled at an opening at the upper end from top to bottom, the pressurizing plate moves downwards along the axial direction of the test cylinder, and the sealing element and the test cylinder enclose a sealed test cavity for containing the soft soil; the supporting device is arranged outside the soft soil containing device, the lower end of the supporting device is fixedly connected with the bottom of the soft soil containing device, and the top end of the supporting device is provided with a loading device for applying pressure to a pressure plate of the soft soil containing device; the loading device comprises a force application mechanism and a dowel bar, the force application mechanism is arranged at the top of the support frame, and the force application end of the force application mechanism is detachably connected with the pressure plate of the soft soil containing device through the dowel bar and is used for providing a pressure along the vertical axial direction of the cylinder for the pressure plate. And in this patent, can only follow the condition of barrel upper end opening observation weak soil surface in the test section of thick bamboo, and can't observe the inlayer, be unfavorable for the analysis of observation, simultaneously, the pressure board only moves down along barrel axial direction through the application of force device pressurization, to the application of pressure of weak soil same position in the barrel, and the ratio between the power that receives on the pressure board and the power that application of force mechanism applied force is fixed, only realize exerting pressure for the weak soil through the power that changes different on the pressure mechanism, the mode is single, be inconvenient for simulation analysis.

SUMMERY OF THE UTILITY MODEL

The invention aims to provide a multifunctional model test box which is mainly used for effectively simulating various field conditions.

In order to solve the technical problem, the application provides a multi-functional model proof box, including the box, the portion of exerting pressure, the box includes the main tank body and locates the tempering organic glass on the main tank body, its characterized in that: a fixed part is arranged at the upper end of one side of the box body, and the fixed part comprises a movable rotary sleeve; the pressing part comprises a pressing part acting on the material in the box body, a fixing part fixedly connected with the rotating sleeve and a gravity code adding part for providing pressure for the pressing part, the fixing part, the pressing part and the gravity code adding part are connected through a bearing lever, and the connecting position of the pressing part and the bearing lever is positioned between the fixing part and the connecting position of the gravity code adding part and the bearing lever; the connecting position of the pressing part on the force bearing lever can be adjusted.

Preferably, the box body further comprises a reinforcing beam arranged outside the main box body, and the fixing piece is arranged on the reinforcing beam.

Preferably, the fixing part comprises a fixing rod and fixing connecting rods which are arranged at two ends of the fixing rod and perpendicular to the fixing rod, and the fixing connecting rods are connected with the reinforcing beam.

Preferably, the fixing part comprises a first thread adjusting rod connected with the rotating sleeve and a connecting hole arranged on the force bearing lever and used for installing the first thread adjusting rod; the first thread adjusting rod is fixed with the force bearing lever in a mode that a nut is fixed to the upper end and the lower end of the connecting hole.

Preferably, the pressure applying part comprises a pressure applying plate, a second thread adjusting rod connected with the pressure applying plate, and a limiting hole arranged on the force bearing lever and used for installing the second thread adjusting rod; and the second thread adjusting rod is fixed with the force bearing lever in a mode that a nut is fixed at the upper end and the lower end of the limiting hole.

Preferably, the pressing plate and the second threaded adjusting rod are connected by a rotatable structure.

Preferably, the limiting holes are provided with a plurality of limiting holes, and the second threaded adjusting rod is installed in any limiting hole.

Preferably, the gravity weight adding part comprises a pressurizing hanging scaffold and a hanging scaffold connecting structure connected with the force bearing lever, a hook is arranged on the pressurizing hanging scaffold, a hanging ring is arranged on the hanging scaffold connecting structure, and the hook is connected with the hanging ring in a matched mode.

Preferably, the main box body is of a cuboid structure with an opening at the upper end, and the tempered organic glass is arranged on the front face of the main box body.

Preferably, the main box body is made of a thick iron plate material and is coated with antirust paint.

The utility model discloses has following technological effect:

1. the box body is a container for arranging test materials during testing, and the pressure applying part is used for realizing load during testing, so that the test materials in the box body are changed under the action of the pressure applying part, and the research is convenient.

2. The reinforcing beam is arranged outside the main box body, so that the stability of the structure of the main box body is improved.

3. The fixed connecting rods which are arranged at the two ends of the fixed rod and are vertical to the fixed rod are connected with the reinforcing beam, so that a gap is formed between the fixed rod and the reinforcing beam, and the rotating sleeve which is sleeved on the fixed rod can rotate or horizontally move on the fixed rod conveniently.

4. One end of the first thread adjusting rod is fixedly connected with the rotary sleeve and serves as a fulcrum in a lever principle, the other end of the first thread adjusting rod is fixed in a connecting hole of the bearing lever through a bolt and can be detached from the bearing lever, the first thread adjusting rod and the bolt are convenient to install and detach, the distance between the bearing lever and a fixed part can be adjusted at any time according to requirements, and the first thread adjusting rod is simple and easy to achieve.

5. One end of the second thread adjusting rod is connected with the pressing plate, the other end of the second thread adjusting rod is fixed in the limiting hole of the bearing lever through a bolt, and the second thread adjusting rod is matched with the bolt to be convenient to mount and dismount, and the height of the bearing lever is convenient to adjust compared with the pressing plate.

6. The pressing plate is connected with the second thread adjusting rod through a rotatable structure, so that the pressing plate can be conveniently adjusted to be horizontal.

7. Under the condition that the gravity code adding part has the same load, when the limiting holes at different positions on the bearing lever are connected with the second threaded rods, the pressure applied by the pressing part to the test material in the box body is different, and the requirements of different pressures can be met.

8. The gravity stacking part adopts a hook form to hang the pressurizing hanging scaffold, and is convenient to install and disassemble.

9. The main tank body upper end is the opening, and the splenium of exerting pressure of being convenient for is followed the upper end opening part and is carried out the test of exerting pressure to the test material in the main tank body, and the front of main tank body is located to tempering organic glass, is convenient for direct observation main tank internal test material's state.

10. The thick iron plate is stable in structure and not prone to stress deformation, and the main box body is coated with the anti-rust paint, so that the defect that the iron plate is prone to rusting is further overcome, and the service life of the main box body is prolonged.

Drawings

FIG. 1 is a diagram of a multi-functional model test chamber.

Fig. 2 shows a long-term deformation test structure diagram of reinforcing soft clay by using gravel piles.

Wherein, 1-1-the main box body; 1-11-toughened organic glass; 1-2-a fixture; 1-21-dead lever; 1-22-fixed connecting rod; 1-23-rotating sleeve; 1-3-reinforcing beams; 2-1-a stationary part; 2-11-a first threaded adjusting rod; 2-12-connecting hole; 2-13-bolt; 2-2-pressing part; 2-21-pressing plate; 2-22-second threaded adjusting rod; 2-23-limiting hole; 2-3-gravity code adding part; 2-31-a pressurized hanging scaffold; 2-311-hook; 2-312-weight; 2-32-hanging scaffold connecting structure; 2-321-hanging ring; 2-4 force bearing levers; 3-gravel piles; 4-1-a bottom crushed stone layer; 4-2-soft clay layer; 4-3-middle crushed stone layer; 4-4-sandy soil layer; 5-a soil pressure sensor; 6-laser displacement sensor.

Detailed Description

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Unless otherwise defined, all terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that the conventional terms should be interpreted as having a meaning that is consistent with their meaning in the relevant art and this disclosure. This disclosure is to be considered as an example of the invention and is not intended to limit the invention to the particular embodiments.

The embodiment provides a multifunctional model test box which is mainly used for effectively simulating various field conditions. The multifunctional model test box comprises a box body and a pressure applying part 2-2, wherein the box body comprises a main box body 1-1 and toughened organic glass 1-11 arranged on the main box body 1-1, a fixing part 1-2 is arranged at the upper end of one side of the box body, and the fixing part 1-2 comprises a movable rotating sleeve 1-23; the pressing part 2-2 comprises a pressing part 2-2 acting on materials in the box body, a fixing part 2-1 fixedly connected with the rotating sleeve 1-23 and a gravity code adding part 2-3 providing pressure for the pressing part 2-2, the fixing part 2-1, the pressing part 2-2 and the gravity code adding part 2-3 are connected through a force bearing lever 2-4, and the connecting position of the pressing part 2-2 and the force bearing lever 2-4 is located between the fixing part 2-1 and the connecting position of the gravity code adding part 2-3 and the force bearing lever 2-4; the connecting position of the pressure applying part 2-2 on the force bearing lever 2-4 can be adjusted.

Referring to fig. 1, the case is a container for containing the test material and for studying the change of the test material, and the pressure applying part 2-2 is a core realizing device for simulating the external pressure. The fixing part 2-1 of the pressing part 2-2 is connected with the fixing part 1-2 on the box body, a fulcrum is provided for the force bearing lever 2-4 through the connection of the box body and the pressing part 2-2, a load required by an experiment is provided for the pressing part 2-2 through the gravity code adding part 2-3, and the force of the pressing part 2-2 acting on a test material in the box body is amplified at the pressing part 2-2 by utilizing a lever principle (labor-saving lever) so as to meet the requirement of higher pressure. The whole structure is simple to manufacture and easy to realize, and meets the test requirements.

The box body also comprises a reinforcing beam 1-3 arranged outside the main box body 1-1, and a fixing piece 1-2 is arranged on the reinforcing beam 1-3. The reinforcing beam 1-3 provides stability of a side structure for the main box body 1-1, so that the main box body 1-1 cannot crack at the side corners due to extrusion of materials in the main box body 1-1 in the test process, and the test process is not influenced. Since the side wall of the main box body 1-1 is thin, if the fixing member 1-2 is directly fixed to the main box body 1-1, the problem of poor fixing is easily caused, and therefore the fixing member 1-2 is arranged on the reinforcing beam 1-3, and the thickness of the reinforcing beam 1-3 is thick, the structural stability of the joint of the fixing member 1-2 can be improved, and the fixing member is not easily deformed or damaged due to stress. The fixing piece 1-2 comprises a fixing rod 1-21 and a fixing connecting rod 1-22 which is arranged at two ends of the fixing rod 1-21 and is vertical to the fixing rod 1-21, and the fixing connecting rod 1-22 is connected with the reinforcing beam 1-3. A gap with a certain distance is reserved between the fixed rod 1-21 and the reinforcing beam 1-3, the rotary sleeve 1-23 is sleeved outside the fixed rod 1-21 and is in non-tight contact with the fixed rod 1-21, so that the rotary sleeve 1-23 rotates along with the stress of the force bearing lever 2-4 when stressed, the rotary sleeve is fixed with the box body at the position, the rotary sleeve serves as a fulcrum, and the pressing part 2-2 moves downwards along with the increased load of the gravity code adding part 2-3 to apply pressure to test materials in the box body. The length of the rotary sleeve 1-23 is smaller than that of the fixed rod 1-21, and the rotary sleeve can move on the fixed rod 1-21 in parallel, so that the position of the pressure applying part 2-2 in the front-back direction can be conveniently adjusted, and the pressure applying operation on different positions of the test material in the test box can be realized. The pressing part 2-2 is connected with the box body through the connection of a fixing part 2-1 on the pressing part 2-2 and a fixing part 1-2 on the right side of the box body, wherein the fixing part 2-1 comprises a first thread adjusting rod 2-11 connected with a rotating sleeve 1-23 and a connecting hole 2-12 arranged on a force bearing lever 2-4 and provided with the first thread adjusting rod 2-11; the first thread adjusting rod 2-11 is fixed with the force bearing lever 2-4 by a way that a screw cap is fixed at the upper end and the lower end of the connecting hole 2-12. The first thread adjusting rod 2-11 is fixedly connected with the rotary sleeve 1-23, and meanwhile, the first thread adjusting rod 2-11 is connected with the connecting hole 2-12 on the force bearing lever 2-4, so that the rotary sleeve 1-23 rotates along with the movement of the force bearing lever 2-4. The first thread adjusting rod 2-11 is fixed with the upper end and the lower end of the connecting hole 2-12 through a nut, and the height of the force bearing lever 2-4 can be adjusted at any time through the structure of the first thread adjusting rod 2-11 and the nut. In the embodiment, the pressure applying part 2-2 comprises a pressure applying plate 2-21, a second thread adjusting rod 2-22 connected with the pressure applying plate 2-21, and a limiting hole 2-23 arranged on the force bearing lever 2-4 and used for installing the second thread adjusting rod 2-22; the second thread adjusting rod 2-22 is fixed with the force bearing lever 2-4 by fixing the nut at the upper end and the lower end of the limit hole 2-23. One end of the second threaded adjusting rod 2-22 is fixed on the force bearing lever 2-4 and moves along with the movement of the force bearing lever 2-4, and meanwhile, the lower end of the second threaded adjusting rod 2-22 is connected with the pressure applying plate 2-21 to drive the pressure applying plate 2-21 to move. Like the first thread adjusting rod 2-11, the second thread adjusting rod 2-22 is matched with the bolt 2-13, and the distance between the force bearing lever 2-4 and the pressure applying plate 2-21 can be adjusted at any time so as to adapt to the height of the test material in the box body. The pressure applying plate 2-21 is connected with the second threaded adjusting rod 2-22 by adopting a rotatable structure. The pressure section can be adjusted to be horizontal by a level gauge so that the pressure section applies force to the test material in the box body uniformly. In the embodiment, the gravity loading part 2-3 comprises a pressurizing hanging scaffold 2-31 and a hanging scaffold connecting structure 2-32 connected with the force bearing lever 2-4, a hook 2-311 is arranged on the pressurizing hanging scaffold 2-31, a hanging ring 2-321 is arranged on the hanging scaffold connecting structure 2-32, and the hook 2-311 is connected with the hanging ring 2-321 in a matching mode. The hanging ring 2-321 and the hanging hook 2-311 are matched and connected with each other, so that in the test, only the hanging hook 2-311 on the pressurizing hanging scaffold 2-31 is needed to be hung on the hanging ring 2-321 on the hanging scaffold connecting structure 2-32, the operation is simple, and in the aspect, in the test, only the weight 2-312 with the corresponding load needs to be placed on the pressurizing hanging scaffold 2-31 to meet the test requirement. By adopting a lever principle, the joint of the fixing part 2-1 and the fixing part 1-2 is taken as a fulcrum, the load of the weight 2-312 on the pressurizing hanging scaffold 2-31 is taken as power, the pressurizing part 2-2 is used for pressurizing the test material in the box body, wherein a plurality of limiting holes 2-23 are arranged, and the second thread adjusting rod 2-22 is arranged in any limiting hole 2-23. The pressing part 2-2 is connected with the second thread adjusting rod 2-22, so that the distance between the pressing part 2-2 and the gravity code adding part 2-3 can be different on the force bearing lever 2-4 along with the second thread adjusting rod 2-22, the load on the gravity code adding part 2-3 and the pressure hanging scaffold 2-31 can be amplified by different times at the pressing part 2-2, and the requirements of more different pressure tests can be met. In this embodiment, the number of the limiting holes 2 to 23 is 3, the distance between each limiting hole 2 to 23 and the gravity code adding part 2 to 3 is 23.4cm, 53.4cm and 83.4cm, the distance corresponds to the three limiting holes 2 to 23, and the pressure applied to the box body by the pressure applying parts 2 to 2 corresponding to the limiting holes 2 to 23 is 8.72 times, 3.82 times and 2.45 times of the load of the gravity code adding part 2 to 3.

In the embodiment, the main box body 1-1 is a cuboid structure with an opening at the upper end, and the toughened organic glass 1-11 is arranged on the front side of the main box body 1-1. Mainly used for visually observing the relevant change of the test material in the test process. The main box body 1-1 is made of thick iron plate material and coated with anti-rust paint. The structure of the box body is stable, the box body can be used for a long time, and the box body is not easy to corrode.

Example two

Based on the first embodiment, the multifunctional model test box can be used for simulating the long-term deformation of the saturated soft clay under the action of different foundation loads, and can also simulate the deformation characteristics of different gravel piles 3 under different loads after reinforcing the soft clay. In this embodiment, a specific application case of the long-term deformation test for reinforcing soft clay by using the gravel pile 3 is as follows (as shown in fig. 2):

s1, determining the grading of the gravel pile 3, screening gravel, configuring the gravel pile 3 by utilizing the grading, and wrapping the gravel pile 3 by using a geogrid;

s2, manufacturing a soil body (namely a test material) in the model box to be used as a tested compressed soil body.

S21, arranging a bottom gravel layer 4-1, paying attention to leveling, and primarily compacting by using a stainless steel plate and a compaction hammer, wherein the height of the gravel layer is 4 cm;

s22, arranging a soft clay layer 4-2, and meanwhile, placing a gravel pile 3 in a corresponding position in advance, wherein the height of the soft clay layer 4-2 is 18.5 cm;

s221, embedding two soil pressure sensors 5 at positions 80cm away from the left side and the right side of the gravel pile 3, wherein the embedding depth is 6cm away from the upper surface of the soft clay, and the connecting lines of the sensors are far away from the position of the gravel pile 3 as far as possible;

s222, leveling a soft clay layer 4-2;

s23, slowly and sequentially arranging an intermediate gravel layer 4-3 and a sand layer 4-4 above the soft clay layer 4-2, wherein after each layer is arranged, the layers need to be leveled, the height of the gravel layer is 8cm, and the height of the sand layer 4-4 is 4 cm;

s3, connecting the soil pressure sensor 5 with a CR3000 data collector, connecting the CR3000 data collector with a computer, opening LoggerNet software, and initially reading a reading;

s4, installing pressure applying plates 2-21 and force bearing levers 2-4, adjusting the bearing levers to be horizontal by using a level meter, and keeping the bearing levers not to apply load to a test soil body;

s5, mounting the laser displacement sensor 6 on the pressing plates 2-21, connecting the laser displacement sensor 6 with a CR3000 data collector and a computer, and adjusting the position of the laser displacement sensor 6 until effective reading can be read from software;

s6, after the sensor, the collector and the computer are ready, the pressurizing hanging scaffold 2-31 is installed, the weights 2-312 are placed on the pressurizing hanging scaffold 2-31 for loading, the loading is started at the corresponding positions of the soil body, and the loading mode is as follows: 12.5, 25, 50, 75, 50, 25, 12.5, 25, 50, 75, units are all kPa, and the load is ten grades;

s7, applying a first-stage 12.5kPa load, recording the height change of the soil layer by using LoggerNet software, and applying a next-stage load until the height change of the soil layer is stable;

s8, after all grades of loads are applied, data are stored; the next set of experiments was restarted.

Although embodiments of the present invention have been described, various changes or modifications may be made by one of ordinary skill in the art within the scope of the appended claims.

Claims

1. The utility model provides a multi-functional model proof box, includes box, the portion of exerting pressure, the box includes the main tank body and locates the tempering organic glass on the main tank body, its characterized in that:

a fixed part is arranged at the upper end of one side of the box body, and the fixed part comprises a movable rotary sleeve;

the pressing part comprises a pressing part acting on the material in the box body, a fixing part fixedly connected with the rotating sleeve and a gravity code adding part for providing pressure for the pressing part, the fixing part, the pressing part and the gravity code adding part are connected through a bearing lever, and the connecting position of the pressing part and the bearing lever is positioned between the fixing part and the connecting position of the gravity code adding part and the bearing lever;

the connecting position of the pressing part on the force bearing lever can be adjusted.

2. A multifunctional model test chamber as claimed in claim 1, wherein:

the box body further comprises a reinforcing beam arranged outside the main box body, and the fixing part is arranged on the reinforcing beam.

3. A multifunctional model test chamber as claimed in claim 2, wherein:

the fixing part comprises a fixing rod and a fixing connecting rod which is arranged at two ends of the fixing rod and is vertical to the fixing rod, and the fixing connecting rod is connected with the reinforcing beam.

4. A multifunctional model test chamber as claimed in claim 1, wherein:

the fixing part comprises a first thread adjusting rod connected with the rotating sleeve and a connecting hole arranged on the force bearing lever and used for installing the first thread adjusting rod;

the first thread adjusting rod is fixed with the force bearing lever in a mode that a nut is fixed to the upper end and the lower end of the connecting hole.

5. A multifunctional model test chamber as claimed in claim 1, wherein:

the pressure applying part comprises a pressure applying plate, a second thread adjusting rod connected with the pressure applying plate, and a limiting hole arranged on the force bearing lever and used for installing the second thread adjusting rod;

and the second thread adjusting rod is fixed with the force bearing lever in a mode that a nut is fixed at the upper end and the lower end of the limiting hole.

6. A multifunctional model test chamber as claimed in claim 5, wherein:

the pressing plate is connected with the second thread adjusting rod through a rotatable structure.

7. A multifunctional model test chamber as claimed in claim 5, wherein:

the limiting holes are provided with a plurality of second thread adjusting rods, and the second thread adjusting rods are arranged in any limiting hole.

8. A multifunctional model test chamber as claimed in claim 1, wherein:

the gravity weight adding part comprises a pressurizing hanging scaffold and a hanging scaffold connecting structure connected with the force bearing lever, a hook is arranged on the pressurizing hanging scaffold, a hanging ring is arranged on the hanging scaffold connecting structure, and the hook is connected with the hanging ring in a matched mode.

9. A multifunctional model test chamber as claimed in claim 1, wherein:

the main tank body is of a cuboid structure with an opening at the upper end, and the toughened organic glass is arranged on the front side of the main tank body.

10. A multifunctional model test chamber as claimed in claim 1, wherein:

the main box body is made of a thick iron plate material and is coated with anti-rust paint.