CN218757649U - Foundation pit ground is wall stability monitoring device even - Google Patents

Abstract

The utility model discloses a foundation ditch ground is wall stability monitoring devices even, include: the device comprises an installation base, a display control platform, a data acquisition box and a monitoring module which are sequentially connected in series; the installation base comprises a semicircular pipe, a bottom plate and a sleeve box, the semicircular pipe is sleeved on a steel support between side walls of the underground diaphragm wall, the bottom plate is fixed on two sides of the semicircular pipe, and the sleeve box is fixed on the bottom plate; the display control platform is arranged at the top of the data acquisition box, and the data acquisition box is arranged at the top of the sleeve box; the monitoring module comprises an inclinometer arranged on a side wall of the underground diaphragm wall, a variable-angle laser ranging device arranged on the bottom plate, a static level gauge arranged on the sleeve box and a strain gauge fixed on the steel support. The method overcomes the problems that the stability of the foundation pit diaphragm wall is mainly judged by manually monitoring the deformation of the side wall in the complex underground engineering such as subway stations and the like at the present stage, the manual monitoring is not only low in efficiency, but also the obtained data volume is small, and the state of the wall body cannot be accurately reflected.

Description

Foundation pit ground is wall stability monitoring device even

Technical Field

The utility model relates to an underground continuous wall technical field especially relates to a foundation ditch ground is wall stability monitoring devices even.

Background

The foundation pit supporting structure is a supporting, blocking, reinforcing and protecting measure adopted for the side wall of the foundation pit and the surrounding environment in order to ensure the safety of the construction of an underground structure and the surrounding environment of the foundation pit, and generally consists of a ground connecting wall and a steel support, and the supporting structure generally generates large deformation before being damaged. The deformation of the diaphragm wall can reflect the deformation of the supporting structure, so that the stability of the diaphragm wall is one of main monitoring objects of the subway station, and the stability of the diaphragm wall can be evaluated by observing the horizontal displacement change between the side walls of the diaphragm wall and the deformation of the side walls. In the construction of the subway station, the stability of the diaphragm wall is ensured by using a construction monitoring means, and corresponding measures are taken in time before the stability is damaged, so that the damage of a supporting structure can be effectively reduced or avoided.

In the complex underground engineering such as subway stations and the like, the stability of the foundation pit diaphragm wall is mainly judged by manually monitoring the deformation of the side wall, the manual monitoring is not only low in efficiency, but also the obtained data volume is small, and the state of the wall body cannot be accurately reflected.

Disclosure of Invention

The utility model provides a foundation ditch ground is wall stability monitoring devices even to overcome present stage in complicated underground works such as subway station, mainly be through the deformation of artifical monitoring side wall judge the foundation ditch ground even stability of wall, artifical monitoring is not only inefficiency, and the data bulk that obtains moreover is few, can not accurately reflect the problem of wall body state.

In order to realize the purpose, the technical scheme of the utility model is that:

a foundation ditch ground is wall stability monitoring device even, includes: the device comprises an installation base, a display control platform, a data acquisition box and a monitoring module which are sequentially connected in series;

the installation base comprises a semicircular pipe, a bottom plate and a sleeve box, the semicircular pipe is sleeved on a steel support between side walls of the underground diaphragm wall, the bottom plate is fixed on two sides of the semicircular pipe, and the sleeve box is fixed on the bottom plate;

the display control platform is arranged at the top of the data acquisition box, and the data acquisition box is arranged at the top of the sleeve box;

the monitoring module comprises an inclinometer arranged on a side wall of the underground diaphragm wall, a variable-angle laser ranging device arranged on the bottom plate, a static level gauge arranged on the sleeve box and a strain gauge fixed on the steel support.

Furthermore, the variable-angle laser distance measuring device comprises a laser distance meter, a telescopic stay bar, a butt plate, a mounting plate and a slide block;

the mounting panel passes through the bolt fastening on the bottom plate, be equipped with the spout on the mounting panel, the spout can be followed to the slider and slided, telescopic vaulting pole one end is articulated with the slider, the telescopic vaulting pole other end is articulated with laser range finder's front end, laser range finder's rear end can be placed on supporting the board, supporting board front end and slider fixed connection, supporting board rear end lower surface and the upper surface in close contact with of bottom plate, supporting the board can follow the spout and slide.

Furthermore, the outer surface of the abutting plate and the upper surface of the bottom plate are both provided with anti-skid grains.

Furthermore, the data acquisition box comprises a voltage transformation device, a data acquisition device and a data storage device which are sequentially connected in series;

the transformation device can be externally connected with a power line to supply power to the data acquisition device and the data storage device;

the data acquisition device is connected with the monitoring module through a data line;

the data storage device is connected with the display control platform.

The steel support is characterized by further comprising a fixing device, wherein the fixing device comprises an inserting plate, a positioning plate and a fixing plate which are sequentially arranged from outside to inside along the radial direction of the steel support;

the plug board is provided with a positioning rod, the positioning rod can sequentially penetrate through the positioning plate and the fixing plate, and the plug board is connected with the positioning plate through a bolt;

the positioning plate is arranged at one end of the semicircular pipe, the positioning plate is fixed on the edges of two sides of the semicircular pipe, and one side of the positioning plate, which is close to the steel support, is provided with a groove for accommodating the fixing plate;

the fixed plate is fixed on the steel support.

Further, the protective hood comprises a top plate and an arm plate;

the mounting base also comprises a vertical plate which is vertically fixed at one end of the bottom plate far away from the semicircular pipe;

the arm plates are vertically fixed at two ends of the top plate, and the outer sides of the ends, far away from the top plate, of the arm plates are in clearance fit with the inner sides of the vertical plates.

Furthermore, the arm plate is connected with the vertical plate through a mortise and tenon structure.

Further, the protection casing still includes the handle, the handle is fixed at the roof top.

The utility model has the advantages that:

installation pedestal mounting is on the steel shotcrete, monitoring module detects the gradient simultaneously, multinomial parameters such as vertical displacement value, the data of monitoring show through the display control platform demonstration after data acquisition box gathers from monitoring module, the data of display control platform demonstration are convenient for the staff and are known the degree of deformation of side wall and steel shotcrete, and then make the staff can accurately know the state of wall body fast, and judge the stability of ground wall with this, it is not only inefficient to have solved manual monitoring, and the data bulk that obtains is few, the problem of wall body state can not accurately be reflected.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic structural view of a foundation pit diaphragm wall stability monitoring device disclosed by the utility model;

fig. 2a is a schematic structural diagram of an angle-variable laser distance measuring device of a foundation pit diaphragm wall stability monitoring device disclosed by the utility model;

fig. 2b is a schematic working diagram of the variable angle laser distance measuring device of the foundation pit diaphragm wall stability monitoring device of the present invention before and after the movement of the supporting plate;

fig. 3 is an installation schematic view of a foundation pit diaphragm wall stability monitoring device disclosed by the utility model;

FIG. 4a is a partial top view of FIG. 3;

FIG. 4b is a cross-sectional view of FIG. 4 a;

fig. 4c is a schematic structural view of a plug board of the foundation pit diaphragm wall stability monitoring device disclosed by the utility model;

fig. 4d is a schematic structural view of a positioning plate of the foundation pit diaphragm wall stability monitoring device disclosed by the utility model;

fig. 4e is a schematic structural view of a fixing plate of the foundation pit diaphragm wall stability monitoring device disclosed by the utility model;

fig. 5 is a schematic structural view of a data collection box of the foundation pit diaphragm wall stability monitoring device disclosed by the utility model;

fig. 6 is a cross-sectional view of a protective cover of a foundation pit diaphragm wall stability monitoring device disclosed by the utility model;

fig. 7 is a sectional view of the mounting base of the foundation pit diaphragm wall stability monitoring device disclosed by the utility model;

in the figure: 1-1, a semicircular pipe, 1-2, a bottom plate, 1-3, a sleeve box, 1-4, a vertical plate, 1-5, a mortise, 2, a display control platform, 3, a data acquisition box, 3-1, a voltage transformation device, 3-2, a data acquisition device, 3-3, a data storage device, 4, an inclinometer, 5, an angle-variable laser ranging device, 5-1, a laser range finder, 5-2, a telescopic supporting rod, 5-3, a supporting plate, 5-4 and a mounting plate, 5-4-1 parts of a sliding groove, 5-5 parts of a sliding block, 6 parts of a static level gauge, 7 parts of a strain gauge, 8 parts of a protective cover, 8-1 parts of a top plate, 8-2 parts of an arm plate, 8-3 parts of a handle, 8-4 parts of a tenon, 9 parts of a fixing device, 9-1 parts of an inserting plate, 9-1-1 parts of a positioning rod, 9-2 parts of a positioning plate, 9-2-1 parts of a positioning hole, 9-3 parts of a fixing plate, 9-3-1 parts of a positioning groove, A parts of a side wall, B parts of a steel support, C parts of the side wall.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

This embodiment provides a foundation ditch ground is wall stability monitoring devices even, includes: the device comprises a mounting base, a display control platform 2, a data acquisition box 3 and a monitoring module which are sequentially connected in series;

as shown in fig. 1, the installation base comprises a semicircular pipe 1-1, a bottom plate 1-2 and a sleeve box 1-3, the semicircular pipe 1-1 is sleeved on a steel support B between a side wall A and an opposite side wall C of the underground diaphragm wall shown in fig. 3, the bottom plate 1-2 is fixed on two sides of the semicircular pipe 1-1, and the sleeve box 1-3 is fixed on the bottom plate 1-2;

the display control platform 2 is arranged at the top of the data acquisition box 3, and the data acquisition box 3 is arranged at the top of the suitcases 1-3;

the monitoring module comprises an inclinometer 4 arranged on a side wall A of the underground diaphragm wall, a variable-angle laser distance measuring device 5 arranged on a bottom plate 1-2, a static leveling instrument 6 arranged on a jacket 1-3 and a strain gauge 7 axially fixed on a steel support B along the steel support B, wherein the strain gauge 7 is arranged between the inner wall of the semicircular pipe 1-1 and the steel support B;

the inclinometer 4 arranged on the side wall A of the diaphragm wall is used for monitoring the vertical and horizontal inclination of the area near the measuring point of the side wall A in the construction process so as to represent the deformation of the area near the measuring point of the side wall A in the construction process within a period of time;

the variable-angle laser distance measuring device 5 is mounted on the bottom plate 1-2 through bolts and used for monitoring relative convergence displacement values of the side wall A and the opposite side wall C in the construction process, the variable-angle laser distance measuring device 5 can change angles to monitor the convergence displacement of a plurality of point positions of the opposite side wall C relative to a current measuring point, the deformation conditions of the side wall A and the opposite side wall C are judged through the convergence displacement, and workers adopt safety protection according to the deformation conditions to avoid collapse;

the static level gauge 6 which is arranged on the casing 1-3 through bolts is used for monitoring a vertical displacement value generated by a side wall A measuring point in the construction process so as to judge the settlement condition of the side wall A;

the strain gauge 7 welded on the steel support B is used for monitoring the axial strain of the steel support B in the construction process to represent the change of the axial force of the steel support B so as to judge the deformation condition of the steel support B;

the monitoring module detects multinomial parameters such as gradient, vertical displacement value simultaneously, and the data that monitoring module monitored are through the demonstration control platform 2 demonstration after data acquisition box 3 gathers from monitoring module, and the data that demonstration control platform 2 shows are convenient for the staff to know the deformation degree of side wall and steel shotcrete, and then make the staff can accurately know the state of wall body fast to with this judge the stability of ground wall even.

In a specific embodiment, as shown in fig. 2a, the variable angle laser distance measuring device 5 includes a laser distance measuring instrument 5-1, a telescopic brace rod 5-2, a resisting plate 5-3, a mounting plate 5-4 and a sliding block 5-5;

the mounting plate 5-4 is fixed on the bottom plate 1-2 through bolts, a sliding groove 5-4-1 is formed in the mounting plate 5-4, the sliding block 5-5 can slide along the sliding groove 5-4-1, one end of the telescopic support rod 5-2 is hinged to the sliding block 5-5, the other end of the telescopic support rod 5-2 is hinged to the front end of the laser range finder 5-1, the rear end of the laser range finder 5-1 can be placed on the supporting plate 5-3, the front end of the supporting plate 5-3 is fixedly connected with the sliding block 5-5, the lower surface of the rear end of the supporting plate 5-3 is tightly contacted with the upper surface of the bottom plate 1-2, and the supporting plate 5-3 can slide along the sliding groove 5-4-1;

the lower surface of the rear end of the abutting plate 5-3 is in close contact with the upper surface of the bottom plate 1-2, so that the abutting plate 5-3 and the bottom plate 1-2 are prevented from sliding relatively when a worker does not operate the abutting plate 5-3;

the variable-angle laser distance measuring device 5 is over against the opposite side wall C, when the variable-angle laser distance measuring device 5 needs to change the measuring angle, a worker can adjust the length of the telescopic support rod 5-2 to change the height of the front end of the laser distance measuring instrument 5-1, further change the angle of the laser distance measuring instrument 5-1 relative to the bottom plate 1-2, and change the angle of the laser emitted by the laser distance measuring instrument 5-1 relative to the opposite side wall C;

after the angle of the laser range finder 5-1 relative to the opposite side wall C is determined, the abutting plate 5-3 can be pushed to slide along the sliding groove 5-4-1, the position of the abutting plate 5-3 relative to the mounting plate 5-4 is further adjusted, the abutting plate 5-3 and the sliding block 5-5 synchronously move horizontally, the telescopic stay bar 5-2 and the laser range finder 5-1 move along with the abutting plate 5-3 in the horizontal direction, as shown in fig. 2b, the distance of the laser range finder 5-1 relative to the opposite side wall C is changed through the position change of the abutting plate 5-3, and the point position of laser emitted by the laser range finder 5-1 on the opposite side wall C is changed;

the operation enables the laser emitted by the laser range finder 5-1 to change the angle and distance of the laser relative to the opposite side wall C, and is convenient for workers to carry out multi-point position measurement.

In a specific embodiment, the telescopic brace rod 5-2 is a telescopic metal brace rod, and is firm, durable and strong in bearing capacity.

In a specific embodiment, the outer surface of the abutting plate 5-3 and the upper surface of the bottom plate 1-2 are both provided with anti-skid lines, and the abutting plate 5-3 and the bottom plate 1-2 are prevented from sliding relatively when workers do not operate the anti-skid device by increasing friction force.

In a specific embodiment, anti-slip rubber pads are adhered to the outer surface of the abutting plate 5-3 and the upper surface of the bottom plate 1-2, and the abutting plate 5-3 and the bottom plate 1-2 are prevented from sliding relatively when workers do not operate the anti-slip rubber pads by increasing friction force.

In a specific embodiment, as shown in fig. 5, the data collection box 3 comprises a transformation device 3-1, a data collection device 3-2 and a data storage device 3-3 which are connected in series in sequence;

the transformer device 3-1 can be externally connected with a power line to supply power to the data acquisition device 3-2 and the data storage device 3-3;

the data acquisition device 3-2 is connected with the monitoring module through a data line;

the transformer device 3-1 converts the on-site 220V voltage into the low voltage required by the data acquisition device 3-2 and the data storage device 3-3, the data storage device 3-3 is connected with the display control platform 1, the data storage device 3-3 is used for storing data, the monitored data is transmitted to the data storage device 3-3 from the monitoring module through the data acquisition device 3-2 to be stored, and a worker reads and inquires the monitored data stored in the data storage device 3-3 through the display control platform 1.

In a specific embodiment, as shown in fig. 3, the steel support structure further comprises a fixing device 9, as shown in fig. 4a, the fixing device 9 comprises an inserting plate 9-1, a positioning plate 9-2 and a fixing plate 9-3 which are sequentially arranged along the radial direction of the steel support B from outside to inside;

as shown in fig. 4c, the inserting plate 9-1 is provided with a positioning rod 9-1-1, the positioning rod 9-1-1 can sequentially penetrate through a positioning hole 9-2-1 of a positioning plate 9-2 as shown in fig. 4d and a positioning groove 9-3-1 of a fixing plate 9-3 as shown in fig. 4e, the inner walls of the positioning hole 9-2-1 and the positioning groove 9-3-1 are both provided with threads, and the inserting plate 9-1 is connected with the positioning plate 9-2 through a bolt;

the positioning plate 9-2 is arranged at one end of the semicircular pipe 1-1, the positioning plate 9-2 is fixed on the edges of two sides of the semicircular pipe 1-1, and a groove for accommodating the fixing plate 9-3 is formed in one side of the positioning plate 9-2 close to the steel support B;

the fixed plate 9-3 is welded on the steel support B;

as shown in fig. 4B, two fixing plates 9-3 are welded on two sides of the steel support B, the mounting base is placed on the steel support B through a semicircular pipe 1-1, the positioning plate 9-2 is aligned with the fixing plate 9-3 by rotating the mounting base, the fixing plate 9-3 is positioned in a groove of the positioning plate 9-2, the positioning rod 9-1-1 of the inserting plate 9-1 is inserted after alignment, and then the inserting plate 9-1 is connected with the positioning plate 9-2 through bolts;

the positioning plates 9-2 on the two sides of the semicircular pipe 1-1 are inserted by the positioning rods 9-1-1, and after the inserting plate 9-1 and the positioning plate 9-2 are fixed through bolts, the semicircular pipe 1-1 is fixed on the steel support B, so that the installation base is prevented from falling off the steel support B due to vibration generated by site construction.

In a particular embodiment, as shown in FIG. 1, further comprising a shield 8, as shown in FIG. 6, the shield 8 comprising a top plate 8-1 and an arm plate 8-2;

as shown in fig. 7, the mounting base further comprises a vertical plate 1-4, the vertical plate 1-4 is vertically fixed at one end of the bottom plate 1-2 far away from the semicircular pipe 1-1, and the vertical plate 1-4 is used for mounting a protective cover 8;

the arm plates 8-2 are vertically fixed at two ends of the top plate 8-1, the outer side of one end, far away from the top plate 8-1, of each arm plate 8-2 is in clearance fit with the inner side of the vertical plate 1-4, the protective cover 8 is conveniently inserted into the installation base, and the protective cover 8 can prevent soil and stones falling in the construction process from damaging the display control platform 2 and the data acquisition box 3.

In a specific embodiment, the arm plate 8-2 is connected with the vertical plate 1-4 through a mortise and tenon structure, as shown in fig. 6 and 7, a tenon 8-4 is arranged on the arm plate 8-2, a mortise 1-5 corresponding to the tenon 8-4 is arranged on the vertical plate 1-4, and the tenon 8-4 is inserted into the mortise 1-5, so that the protective cover 8 is prevented from falling off the installation base due to vibration generated by site construction.

In a specific embodiment, the protective cover 8 further comprises a handle 8-3, and the handle 8-3 is fixed at the top end of the top plate 8-1, so that the protective cover is convenient for workers to mount and dismount.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the scope of the invention in its corresponding aspects.

Claims (8)

1. The utility model provides a foundation ditch ground is wall stability monitoring device even, its characterized in that includes: the device comprises a mounting base, a display control platform (2), a data acquisition box (3) and a monitoring module which are sequentially connected in series;

the mounting base comprises a semicircular pipe (1-1), a bottom plate (1-2) and a sleeve box (1-3), the semicircular pipe (1-1) is sleeved on a steel support (B) between side walls of the underground diaphragm wall, the bottom plate (1-2) is fixed on two sides of the semicircular pipe (1-1), and the sleeve box (1-3) is fixed on the bottom plate (1-2);

the display control platform (2) is arranged at the top of the data acquisition box (3), and the data acquisition box (3) is arranged at the top of the sleeve box (1-3);

the monitoring module comprises an inclinometer (4) arranged on a side wall of the diaphragm wall, a variable-angle laser distance measuring device (5) arranged on the bottom plate (1-2), a static leveling instrument (6) arranged on the sleeve box (1-3) and a strain gauge (7) fixed on the steel support (B).

2. The foundation pit ground connection wall stability monitoring device is characterized in that the variable-angle laser distance measuring device (5) comprises a laser distance measuring instrument (5-1), a telescopic support rod (5-2), a butt plate (5-3), a mounting plate (5-4) and a sliding block (5-5);

the mounting plate (5-4) is fixed on the bottom plate (1-2) through bolts, a sliding groove (5-4-1) is formed in the mounting plate (5-4), the sliding block (5-5) can slide along the sliding groove (5-4-1), one end of the telescopic supporting rod (5-2) is hinged to the sliding block (5-5), the other end of the telescopic supporting rod (5-2) is hinged to the front end of the laser range finder (5-1), the rear end of the laser range finder (5-1) can be placed on the abutting plate (5-3), the front end of the abutting plate (5-3) is fixedly connected with the sliding block (5-5), the lower surface of the rear end of the abutting plate (5-3) is tightly contacted with the upper surface of the bottom plate (1-2), and the abutting plate (5-3) can slide along the sliding groove (5-4-1).

3. The foundation pit ground connecting wall stability monitoring device of claim 2, wherein the outer surface of the abutting plate (5-3) and the upper surface of the bottom plate (1-2) are provided with anti-skid lines.

4. A foundation pit diaphragm wall stability monitoring device according to claim 1, wherein the data acquisition box (3) comprises a voltage transformation device (3-1), a data acquisition device (3-2) and a data storage device (3-3) which are connected in series in sequence;

the transformation device (3-1) can be externally connected with a power line to supply power to the data acquisition device (3-2) and the data storage device (3-3);

the data acquisition device (3-2) is connected with the monitoring module through a data line;

the data storage device (3-3) is connected with the display control platform (2).

5. The foundation pit diaphragm wall stability monitoring device of claim 1, further comprising a fixing device (9), wherein the fixing device (9) comprises an inserting plate (9-1), a positioning plate (9-2) and a fixing plate (9-3) which are sequentially arranged from outside to inside along the radial direction of the steel support (B);

the inserting plate (9-1) is provided with a positioning rod (9-1-1), the positioning rod (9-1-1) can sequentially penetrate through the positioning plate (9-2) and the fixing plate (9-3), and the inserting plate (9-1) is connected with the positioning plate (9-2) through a bolt;

the positioning plate (9-2) is arranged at one end of the semicircular pipe (1-1), the positioning plate (9-2) is fixed on the edges of the two sides of the semicircular pipe (1-1), and a groove for accommodating the fixing plate (9-3) is formed in one side, close to the steel support (B), of the positioning plate (9-2);

the fixing plate (9-3) is fixed on the steel support (B).

6. A foundation pit diaphragm wall stability monitoring device according to claim 1, further comprising a protective cover (8), wherein the protective cover (8) comprises a top plate (8-1) and an arm plate (8-2);

the mounting base further comprises a vertical plate (1-4), and the vertical plate (1-4) is vertically fixed at one end, far away from the semicircular pipe (1-1), of the bottom plate (1-2);

the arm plates (8-2) are vertically fixed at two ends of the top plate (8-1), and the outer sides of the ends, far away from the top plate (8-1), of the arm plates (8-2) are in clearance fit with the inner sides of the vertical plates (1-4).

7. The foundation pit ground connection wall stability monitoring device according to claim 6, wherein the arm plate (8-2) is connected with the vertical plate (1-4) through a mortise and tenon joint structure.

8. A foundation pit diaphragm wall stability monitoring device according to claim 6, characterized in that the protection cover (8) further comprises a handle (8-3), and the handle (8-3) is fixed on the top end of the top plate (8-1).

Images