CN218816534U

CN218816534U - Embedding device for tunnel pressure box

Info

Publication number: CN218816534U
Application number: CN202223144799.0U
Authority: CN
Inventors: 李淮; 孙卫星; 范鑫; 赵永宾
Original assignee: CCCC Third Harbor Engineering Co Ltd
Current assignee: CCCC Third Harbor Engineering Co Ltd
Priority date: 2022-11-25
Filing date: 2022-11-25
Publication date: 2023-04-07
Anticipated expiration: 2032-11-25

Abstract

The utility model belongs to the technical field of engineering construction equipment, a device is buried underground to tunnel pressure cell is related to, include: the fixing plate is provided with a plurality of fixing holes which are uniformly arranged along the edge of the fixing plate; the pressure box is arranged at the center of the back of the fixed plate; the limiting assembly is arranged on the back of the fixing plate, surrounds the pressure box and is used for limiting the position of the pressure box; the guide assembly is arranged on the back of the fixed plate, is connected with the limiting assembly and is used for guiding the pressure box into the limiting assembly; and the fixing nails are respectively arranged in the fixing holes. The utility model discloses a cooperation setting of fixed plate, spacing subassembly, guide assembly and a plurality of staple can make the pressure cell fixed fast on the one hand, and on the other hand also enables the pressure cell and closely laminates with the region of surveying, guarantees the data accuracy that detects at last, reduces the error.

Description

Embedding device for tunnel pressure box

Technical Field

The utility model belongs to the technical field of engineering construction equipment, a device is buried underground to tunnel pressure cell is related to.

Background

With the development of the new Austrian's method, a composite lining mainly comprising primary support and secondary lining becomes a main support form of mountain tunnels in China. Due to the fact that complex geological conditions are more and more, the situation that the secondary lining bears larger load is increased, and therefore monitoring and measuring of the load of the secondary lining are important items in the design and construction process of mountain tunnels. Whether the stress of the supporting structure is reasonable or not can be judged through information feedback obtained by monitoring and measuring, if the supporting load is too large, the design scheme can be changed to eliminate hidden dangers exposed by monitoring and measuring, and the construction safety is ensured.

At present, the existing pressure box fixing modes mainly comprise two modes, one mode is a simple and rough mode, and the welding mode is used for welding a reinforcing mesh or a steel arch, so that the attribute of the pressure box is changed greatly, the difference between the attribute and factory parameters is far, and the detected data error is large; in addition, a complex fixing device is usually used, so that the engineering cost is increased, the pressure box cannot be tightly attached to the measured area, and the detected data error is large.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a device buries underground of tunnel pressure cell to solve the fixed mode of current pressure cell and easily cause the pressure cell attribute to take place great change or pressure cell and survey region can not closely laminate, lead to the great technical problem of detection data error.

In order to achieve the above object, the utility model relates to a tunnel pressure cell buries device underground's concrete technical scheme as follows:

an embedding device of a tunnel pressure box comprises:

the fixing plate is provided with a plurality of fixing holes which are uniformly arranged along the edge of the fixing plate;

the pressure box is arranged at the center of the back of the fixed plate;

the limiting assembly is arranged on the back of the fixing plate, surrounds the pressure box and is used for limiting the position of the pressure box;

the guide assembly is arranged on the back of the fixed plate, is connected with the limiting assembly and is used for guiding the pressure box into the limiting assembly;

and the fixing nails are respectively arranged in the fixing holes.

The utility model discloses a characteristics still lie in:

wherein spacing subassembly includes the arc limiting plate, and the arc limiting plate sets up around the pressure cell, and the height that highly is less than the pressure cell of arc limiting plate.

Wherein the direction subassembly includes two deflector, and the both ends at the arc limiting plate are connected respectively to the one end of two deflector, and the other end of two deflector is close to the upper right corner of fixed plate and with fixed plate edge connection, two the deflector is parallel to each other, two the height that highly is less than the pressure cell of deflector.

The position of the arc limiting plate, which is far away from the two guide plates, is provided with a groove, and the pressure box is provided with a lead which passes through the groove.

Wherein a rubber layer is arranged between the arc limiting plate and the pressure box and is connected with the arc limiting plate.

Wherein the end of the lead wire away from the pressure cell is connected to a frequency reader.

Wherein the lead is provided with a plurality of fixing clips.

Wherein the fixed plate is a waterproof plate.

Wherein the one side of the pressure cell of keeping away from the fixed plate is provided with concrete layer, and the pressure cell contacts with concrete layer, and the fixed plate setting is on concrete layer.

The utility model discloses a bury device underground of tunnel pressure cell has following advantage:

firstly, the fixing plate, the limiting assembly, the guide assembly and the fixing nails are matched, so that the pressure box can be quickly fixed on one hand, and the pressure box can be tightly attached to a measured area on the other hand, the accuracy of finally detected data is ensured, and errors are reduced;

secondly, the rubber layer is arranged, so that the pressure box is prevented from being damaged when sliding into the arc limiting plate, and the normal use of the pressure box is ensured;

thirdly, the device is simple in structure and convenient to install, and can be installed quickly by only one worker, so that the installation efficiency of the pressure box is improved;

fourthly, the device can use local materials, the leftover materials of the waterproof board are recycled, a process of factory customization is not needed like other complex fixing devices, and the cost is saved;

fifthly, through the setting on the concrete layer, make pressure cell and concrete layer, fixed plate three closely laminate, make the ability transmit the pressure cell fast, further guarantee the accuracy of pressure cell detection data.

Drawings

Fig. 1 is a schematic view of the overall structure of the utility model;

fig. 2 is an enlarged schematic structural view of a portion a in fig. 1 according to the present invention;

fig. 3 is a schematic structural view of the pressure box of the present invention fixed inside a tunnel;

reference numerals:

1. a fixing plate; 2. a pressure cell; 3. a fixing clip; 4. a lead wire; 5. a fixing hole; 6. fixing nails; 7. a concrete layer; 8. an arc limiting plate; 9. a guide plate; 10. a rubber layer; 11. a groove; 12. a frequency reader.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, the utility model relates to a device buries underground of tunnel pressure cell, including fixed plate 1, fixed plate 1 is the positive direction, fixed plate 1 is preferably the waterproof board, intercepting waterproof board leftover bits can at the job site, 8

fixed orifices

5,8 fixed orifices 5 have been seted up on fixed plate 1 evenly set up along the edge of fixed plate 1, the back central point of fixed plate 1 puts and is provided with pressure cell 2, the back of fixed plate 1 is provided with spacing subassembly around pressure cell 2, spacing subassembly is used for limiting pressure cell 2's position, when avoiding fixed plate 1 not fixed yet, skew appears in pressure cell 2's position, the back of fixed plate 1 is provided with the direction subassembly, the direction subassembly is connected with spacing subassembly, the direction subassembly is used for leading pressure cell 2 into spacing subassembly, 8 fixed orifices 5 inside are provided with staple 6 respectively, staple 6 are preferably to penetrate the nail, can directly penetrate nail penetrating fixed orifice 5 through penetrating the nail gun, be convenient for fix fixed plate 1 fast, also enable pressure cell 2 and the region that surveyed closely laminates simultaneously, guarantee the data accuracy of final detection, reduce the error.

As shown in fig. 2, spacing subassembly includes arc limiting plate 8, and arc limiting plate 8 sets up around pressure cell 2, and arc limiting plate 8 is close to one side and the 1 fixed connection of fixed plate 1, and arc limiting plate 8 highly is less than pressure cell 2's height, avoids influencing pressure cell 2 and the laminating degree in the region of surveying.

The direction subassembly includes two deflector 9, and the both ends at arc limiting plate 8 are connected respectively to the one end of two deflector 9, and the other end of two deflector 9 is close to the upper right corner of fixed plate 1 and with 1 edge connection of fixed plate, and two deflector 9 are parallel to each other, and the height that highly is less than pressure cell 2 of two deflector 9 makes pressure cell 2 can follow in the upper right corner of fixed plate 1 slips into arc limiting plate 8 through two deflector 9.

The arc limiting plate 8 is provided with a groove 11 at a position far away from the two guide plates 9, a lead 4 is arranged on the pressure box 2, and the lead 4 penetrates through the groove 11.

Be provided with rubber layer 10 between arc limiting plate 8 and the pressure cell 2, rubber layer 10 is connected with arc limiting plate 8, and arc limiting plate 8 causes the injury to pressure cell 2 when avoiding pressure cell 2 to slide into arc limiting plate 8.

The end of the lead wire 4 far away from the pressure box 2 is connected with a frequency reading instrument 12, and the frequency detected and fed back by the pressure box 2 is recorded by the frequency reading instrument 12.

The lead 4 is provided with a plurality of fixing clips 3, and the lead 4 is fixed on the hole wall through the fixing clips 3.

The one side of keeping away from fixed plate 1 of pressure cell 2 is provided with concrete layer 7, and pressure cell 2 and the contact of concrete layer 7, fixed plate 1 set up on concrete layer 7, make pressure cell 2 closely laminate with

concrete layer

7, 1 three of fixed plate, make the ability transmit pressure cell 2 fast, further guarantee the accuracy of 2 detection data of pressure cell.

The working principle is as follows: as shown in fig. 1-3, a sufficient number of pressure cells 2 are selected, the length of the lead wire 4 of each pressure cell 2 is ensured to be sufficient according to the arrangement position, then the fixing plate 1 is closely attached to the concrete layer 7 on the surface of the area to be measured, the fixing nails 6 are respectively driven into the three fixing holes 5 at the lower part of the fixing plate 1 and the two fixing holes 5 at the left side by using a nail gun, then the pressure cell 2 is put into the fixing plate 1 from the upper right corner of the back surface, the pressure cell 2 slides into the arc limiting plate 8 along the two guide plates 9, then the lead wire 4 passes through the groove 11, the lead wire 4 is driven out from the gap at the lower left corner of the fixing plate 1, then the fixing nails 6 are respectively driven into the two fixing holes 5 at the right side of the fixing plate 1 and the one fixing hole 5 at the upper part by using the nail gun, after the position of the pressure box 2 is fixed, fixing the lead 4 by the fixing clamp 3 every 0.8m, so that the lead 4 extends down along the tunnel wall, the lead is extended by 2m when reaching the arch foot of the tunnel, the tail end of the lead 4 is pulled out of the copper wire by using tool pliers, the red wire and the black wire are respectively pulled out of the copper wire by 3cm and are connected with the frequency reading instrument 12, the section geotextile is laid with the waterproof board, the tail part of the waterproof board can not cover the lead 4 when paying attention to the fact that the waterproof board can not cover the lead 4, the tail part of the lead can stretch out by more than 1m, the frequency is recorded by using the frequency reading instrument 12, after the pouring of concrete, the frequency is measured once every day, a time course curve of the change of the contact pressure of the primary support and the secondary lining can be obtained by a frequency conversion pressure value formula, and the method for converting the frequency into the pressure value is as follows:

in the formula: k-calibration coefficient of pressure cell, unit is MPa/Hz ² (ii) a f, the actual measurement frequency is in Hz; f. of ₀ Initial frequency in Hz.

fourthly, the device can use local materials, the leftover materials of the waterproof board are recycled, a process which needs to be customized by a factory like other complex fixing devices is not needed, and the cost is saved;

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.

Claims

1. An embedding device of a tunnel pressure cell, comprising:

the fixing plate (1) is provided with a plurality of fixing holes (5), and the fixing holes (5) are uniformly arranged along the edge of the fixing plate (1);

the pressure box (2) is arranged at the center of the back of the fixing plate (1);

the limiting assembly is arranged on the back surface of the fixing plate (1), arranged around the pressure box (2) and used for limiting the position of the pressure box (2);

the guide assembly is arranged on the back surface of the fixing plate (1), is connected with the limiting assembly and is used for guiding the pressure box (2) into the limiting assembly;

and the fixing nails (6) are respectively arranged in the fixing holes (5).

2. A burying device for a tunnel pressure box according to claim 1, wherein said limiting assembly includes an arc limiting plate (8), said arc limiting plate (8) being disposed around the pressure box (2), the height of said arc limiting plate (8) being less than the height of the pressure box (2).

3. The burying device of a tunnel pressure box according to claim 2, wherein said guide assembly comprises two guide plates (9), one end of each of said two guide plates (9) is connected to each end of the arc-shaped limiting plate (8), the other end of each of said two guide plates (9) is close to the upper right corner of the fixing plate (1) and is connected to the edge of the fixing plate (1), said two guide plates (9) are parallel to each other, and the height of each of said two guide plates (9) is smaller than the height of the pressure box (2).

4. A burying device for a tunnel pressure box according to claim 3, wherein the arc-shaped limiting plate (8) is provided with a groove (11) at a position far away from the two guide plates (9), the pressure box (2) is provided with a lead (4), and the lead (4) passes through the groove (11).

5. A burying device for a tunnel pressure box according to claim 4, characterised in that a rubber layer (10) is arranged between said arc-shaped limiting plate (8) and the pressure box (2), said rubber layer (10) being connected with the arc-shaped limiting plate (8).

6. A burying device for a tunnel pressure cell according to claim 4, wherein the end of said lead wire (4) remote from the pressure cell (2) is connected to a frequency reader (12).

7. Burying device for a tunnel pressure cell, according to claim 4, characterised in that said lead (4) is provided with a plurality of fixing clips (3).

8. A burying device for a tunnel pressure cell according to claim 1, characterised in that said fixing plate (1) is a waterproof plate.

9. An embedding device for a tunnel pressure cell according to claim 1, wherein a concrete layer (7) is provided on a surface of the pressure cell (2) remote from the fixing plate (1), the pressure cell (2) is in contact with the concrete layer (7), and the fixing plate (1) is provided on the concrete layer (7).