CN212477846U - Foundation pit horizontal displacement monitoring device - Google Patents
Foundation pit horizontal displacement monitoring device Download PDFInfo
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- CN212477846U CN212477846U CN202020864673.2U CN202020864673U CN212477846U CN 212477846 U CN212477846 U CN 212477846U CN 202020864673 U CN202020864673 U CN 202020864673U CN 212477846 U CN212477846 U CN 212477846U
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Abstract
The utility model relates to a foundation ditch monitoring field especially relates to a foundation ditch horizontal displacement monitoring devices, including mounting structure, laser ranging device, angle measuring device and laser mark target. The mounting structure comprises a base and a mounting frame, the base is arranged on a top beam of the foundation pit, and the mounting frame is arranged on the base in an angle-adjustable manner; the laser ranging device is arranged on the mounting frame; the angle measuring device is used for measuring the inclination angle of the mounting rack; the laser target is arranged outside the influence range of the foundation pit and used for reflecting laser emitted by the laser ranging device. The utility model discloses in, laser rangefinder surveys its and the distance of laser mark target, and angle measurement device real-time measurement laser rangefinder's inclination from this alright calculate the horizontal distance of laser rangefinder and laser mark target. And comparing the calculated horizontal distance with the initial horizontal distance to obtain the horizontal displacement of the foundation pit, so that the real-time measurement of the horizontal displacement of the foundation pit is realized, and the device has the advantages of simple structure, convenience in operation and small measurement error.
Description
Technical Field
The utility model relates to a foundation ditch monitoring field especially relates to a foundation ditch horizontal displacement monitoring devices.
Background
Excavation of a foundation pit is a complex system project, and under the conditions of supporting reinforcement and improper rainfall, the normal use of various surrounding structures is often endangered due to the fact that the ground displacement of the edge of the foundation pit exceeds the designed value, for example, the underground municipal pipelines are broken, surrounding structures are inclined, cracked and even collapsed, roads are cracked and sunken, collapse of the foundation pit is caused, and the life safety of people is endangered.
The existing method for monitoring the horizontal displacement of the foundation pit is to set a monitoring point on a foundation pit support (such as a retaining wall), set a prism on the monitoring point, and calculate by matching with a total station outside the foundation pit and a datum point prism, thereby realizing the monitoring of the horizontal displacement of the foundation pit.
However, the foundation pit gradually develops towards the direction of the oversized foundation pit, the oversized foundation pit can cause that a plurality of prism points can not be seen through with the total station, and the total station can be seen through with the prism points without stopping moving the station. According to the surveying and mapping, the total station is more in station moving, the accumulated error is larger, the error accumulation is controlled through the arrangement of the control network, the workload is greatly increased, and the condition that all prism points cannot be monitored in real time on the same day by the method, so that the monitoring result is not real-time.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a foundation ditch horizontal displacement monitoring devices, measuring result is accurate, and measurement is easy and simple to handle to but the horizontal displacement of real-time supervision foundation ditch.
In order to realize the purpose, the following technical scheme is provided:
the utility model provides a foundation ditch horizontal displacement monitoring devices, includes:
a mounting structure comprising a base configured to be disposed on a crown of the foundation pit and a mounting angularly adjustably disposed on the base;
the laser ranging device is arranged on the mounting frame;
an angle measuring device for measuring an inclination angle of the mounting bracket;
the foundation pit horizontal displacement monitoring device further comprises a laser target, wherein the laser target is arranged outside the influence range of the foundation pit and used for reflecting laser emitted by the laser ranging device.
As foundation ditch horizontal displacement monitoring devices's preferred scheme, the mounting bracket includes first connecting plate, be provided with a plurality of first regulation holes on the first connecting plate, the base includes the second connecting plate, be provided with a plurality of second regulation holes on the second connecting plate, the fastener is optionally adjusted the hole with one of them first regulation hole and one of them second and is connected, in order to adjust the mounting bracket for the inclination of base.
As a preferable scheme of the foundation pit horizontal displacement monitoring device, a first pre-installation hole is formed in the first connecting plate, a second pre-installation hole is formed in the second connecting plate, and a connecting piece penetrates through the first pre-installation hole and the second pre-installation hole, so that the mounting frame is rotatably connected to the base.
As foundation ditch horizontal displacement monitoring devices's preferred scheme, the mounting bracket still include with first connecting plate is the first mounting panel of contained angle setting, laser rangefinder connect in on the first mounting panel, angle measuring device measures the inclination of first mounting panel for the horizontal plane.
As the preferred scheme of foundation ditch horizontal displacement monitoring devices, the base still include with the second connecting plate is the second mounting panel of contained angle setting, the second mounting panel connect in on the hat roof beam.
As the preferable scheme of the foundation pit horizontal displacement monitoring device, the crown beam is provided with an installation pier, and the second installation plate is connected to the installation pier.
As a preferable scheme of the foundation pit horizontal displacement monitoring device, the mounting pier is of a concrete structure.
The device for monitoring the horizontal displacement of the foundation pit further comprises a total station instrument which is used for measuring the displacement of the laser target so as to correct the horizontal displacement of the foundation pit.
As a preferred scheme of the foundation pit horizontal displacement monitoring device, the laser target is in a triangular prism shape, and three side faces of the laser target are reflecting surfaces.
As the preferred scheme of the foundation ditch horizontal displacement monitoring devices, still include:
the data acquisition module is used for acquiring a distance value measured by the laser ranging device and an inclination angle value measured by the angle measuring device;
and the calculation module is used for calculating the horizontal displacement of the foundation pit according to the distance value measured by the laser ranging device and the inclination angle value measured by the angle measuring device.
The utility model has the advantages that:
in the foundation pit horizontal displacement monitoring devices that this embodiment provided, the horizontal displacement monitoring of foundation pit is realized through the horizontal displacement of the hat roof beam at monitoring foundation pit edge, and mounting structure sets up on the hat roof beam of foundation pit, and laser rangefinder sets up on mounting structure, and the laser mark target sets up outside the foundation pit influence scope. The laser ranging device emits laser, the laser is reflected after reaching the laser target, the laser is transmitted reversely, and after the laser ranging device receives the reflected laser, the distance between the laser ranging device and the laser target can be measured. In the mounting structure, the mounting frame is mounted on the base in an angle-adjustable manner, and then the inclination angle of the laser ranging device is adjusted, so that laser can be accurately shot on the laser target. The angle measuring device is used for measuring the inclination angle of the mounting rack in real time. According to the distance between the laser ranging device and the laser target measured by the laser ranging device, and the inclination angle of the mounting frame (namely the inclination angle of the laser ranging device) measured by the angle measuring device, the horizontal distance between the laser ranging device and the laser target can be calculated. And comparing the calculated horizontal distance with the initial horizontal distance to obtain the horizontal displacement of the foundation pit, so that the real-time measurement of the horizontal displacement of the foundation pit is realized, and the device has the advantages of simple structure, convenience in operation and small measurement error.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is a schematic view of a foundation pit horizontal displacement monitoring device provided by an embodiment of the present invention;
fig. 2 is a schematic view of a mounting structure provided in an embodiment of the present invention;
fig. 3 is a schematic view of a first mounting plate, a laser ranging module and an angle measuring module provided in an embodiment of the present invention;
fig. 4 is an axonometric view of a laser target provided by an embodiment of the present invention.
Reference numerals:
100-a crown beam; 200-mounting piers;
1-a laser ranging device; 2-mounting a structure; 3-an angle measuring device; 4-laser targeting; 5-erecting a rod; 6-flange seat;
21-a mounting frame; 22-a base;
211-a first connection plate; 2111-first adjustment aperture; 2112-first pre-assembly hole;
212-a first mounting plate;
221-a second connecting plate; 2211-a second adjustment aperture; 2212-second pre-assembled hole;
222-a second mounting plate; 2221-fixing holes;
41-reflecting surface.
Detailed Description
In order to make the technical problems, technical solutions adopted and technical effects achieved by the present invention clearer, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
This embodiment provides a foundation ditch horizontal displacement monitoring devices, can the horizontal displacement of real-time supervision foundation ditch. As shown in fig. 1, the foundation pit horizontal displacement monitoring device includes a mounting structure 2, a laser ranging device 1, an angle measuring device 3 and a laser target 4.
The horizontal displacement monitoring of the foundation pit is achieved by monitoring the horizontal displacement of the crown beam 100 at the edge of the foundation pit. The mounting structure 2 is arranged on the top beam 100 of the foundation pit, the laser ranging device 1 is arranged on the mounting structure 2, and when the foundation pit generates horizontal displacement, the horizontal positions of the mounting structure 2 and the laser ranging device 1 change accordingly.
And taking the range which is far away from the edge of the foundation pit and is beyond 10 meters as the influence range of the foundation pit, namely the range is not influenced by the displacement of the foundation pit, and arranging the laser target 4 in the range.
Laser rangefinder 1 transmission laser, is reflected behind laser target 4 after laser arrival, and laser reverse transmission, laser rangefinder 1 receives the laser of reflection after, alright survey laser rangefinder 1 and laser target 4's distance.
Considering that a guardrail is generally installed near the edge of a foundation pit, the laser distance measuring device 1 is arranged in the guardrail, the laser target 4 is arranged outside the guardrail, laser emitted by the laser distance measuring device 1 needs to penetrate through the guardrail at a proper position, and the height of the laser target 4 during installation is not fixed, so that the installation structure 2 comprises a base 22 and an installation frame 21, and the installation structure is shown in fig. 2. The base 22 is fixedly connected to the top beam 100 of the foundation pit, the mounting frame 21 is mounted on the base 22 in an angle-adjustable manner, and the laser ranging device 1 is mounted on the mounting frame 21. The inclination angle of the laser ranging device 1 is realized by adjusting the inclination angle of the mounting frame 21 relative to the base 22, so that laser can be accurately shot on the laser target 4. The angle measuring device 3 is used for measuring the inclination angle of the mounting frame 21 in real time.
According to the distance between the laser distance measuring device 1 and the laser target 4 measured by the laser distance measuring device 1, and the inclination angle of the mounting frame 21 (i.e. the inclination angle of the laser distance measuring device 1) measured by the angle measuring device 3, the horizontal distance between the laser distance measuring device 1 and the laser target 4 can be calculated. And comparing the calculated horizontal distance with the initial horizontal distance to obtain the horizontal displacement of the foundation pit, so that the real-time measurement of the horizontal displacement of the foundation pit is realized, and the device has the advantages of simple structure, convenience in operation and small measurement error. Illustratively, the angle measurement module is an angle sensor.
Optionally, the foundation pit horizontal displacement monitoring device further comprises a data acquisition module and a calculation module. The data acquisition module is used for acquiring the distance value measured by the laser ranging device 1 and the inclination angle value measured by the angle measuring device 3 in real time. And the calculation module calculates the horizontal displacement of the foundation pit according to the distance value measured by the laser ranging device 1 and the inclination angle value measured by the angle measuring device 3. And measuring for multiple times every day, and comparing the calculated horizontal distance with the initial horizontal distance to obtain the horizontal displacement of the foundation pit.
Mounting structure 2, laser rangefinder 1, angle measuring device 3 and laser mark target 4, as one set of monitoring system. A plurality of sets of monitoring systems can be arranged around the foundation pit as required, so that the monitoring accuracy is improved.
Illustratively, with continued reference to FIG. 2, to achieve rotational adjustment of the mounting bracket 21 relative to the base 22, the mounting bracket 21 includes a first connecting plate 211 having a plurality of first adjustment apertures 2111 disposed thereon, the base 22 includes a second connecting plate 221 having a plurality of second adjustment apertures 2211 disposed thereon, and a fastener is selectively coupled to one of the first adjustment apertures 2111 and one of the second adjustment apertures 2211. In this embodiment, the first adjusting holes 2111 of the first connecting plate 211 are spaced along a first direction, the second adjusting holes 2211 of the second connecting plate 221 are spaced along a second direction, and the second direction forms an included angle with the first direction, and the rotating angle of the first connecting plate 211 relative to the second connecting plate 221 is adjusted by selecting the positions of the first adjusting holes 2111 and the second adjusting holes 2211 matched with the fasteners, so that the inclination angle of the mounting frame 21 relative to the base 22 is adjustable. The fasteners are preferably bolts.
To facilitate adjustment of the rotation angle of the first connecting plate 211 relative to the second connecting plate 221, a first pre-installation hole 2112 is formed in the first connecting plate 211, a second pre-installation hole 2212 is formed in the second connecting plate 221, and the connecting member is inserted into the first pre-installation hole 2112 and the second pre-installation hole 2212, so that the mounting bracket 21 is rotatably connected to the base 22. The connecting member is preferably a bolt, and is not locked when the first connecting plate 211 is adjusted to rotate relative to the second connecting plate 221.
For the laser range finder 1 of easy to assemble, the mounting bracket 21 still includes the first mounting panel 212 that is the contained angle setting with first connecting plate 211, and laser range finder 1 is installed on first mounting panel 212, and angle measuring device 3 is used for measuring the inclination of first mounting panel 212 for the horizontal plane. For example, referring to fig. 3, the laser distance measuring device 1 and the angle measuring device 3 may be fixed on the first mounting plate 212 by bolts or AB glue. In this embodiment, the first mounting plate 212 and the first connecting plate 211 form an included angle, and both form an L-shaped structure. In other embodiments, the first mounting plate 212 and the first connecting plate 211 may also form a T-shaped structure.
Referring to fig. 1 and 2, to facilitate the fixing of the base 22 on the crown beam 100, the base 22 further includes a second mounting plate 222 disposed at an angle to the second connecting plate 221, and the second mounting plate 222 is connected to the crown beam 100. The crown beam 100 is a reinforced concrete continuous beam arranged at the top of a supporting structure at the periphery of a foundation pit, and the base 22 is not directly arranged on the reinforced concrete continuous beam, therefore, the crown beam 100 of the embodiment is provided with the mounting pier 200, and the second mounting plate 222 is connected to the mounting pier 200, so that the second mounting plate 222 is convenient to mount and dismount. Alternatively, the mounting pier 200 is a concrete structure. Illustratively, the second mounting plate 222 is provided with a fixing hole 2221, and the second mounting plate 222 is fixed to the mounting block 200 by an explosive screw, which is driven into the mounting block 200 through the fixing hole 2221.
In order to avoid the displacement of the laser target 4 caused by various external factors and further influence the accuracy of the measuring result, the foundation pit horizontal displacement monitoring device further comprises a total station. The total station is arranged outside the influence range of the foundation pit, the displacement of the laser target 4 is measured in real time through the total station, and when the horizontal displacement of the foundation pit is calculated, the horizontal displacement of the laser target 4 is taken into consideration, so that the monitoring accuracy is improved.
Illustratively, in the initial state, the initial horizontal distance between the laser distance measuring device 1 and the laser target 4 is L0. During measurement, the laser ranging device 1 measures the transmission distance of laser to obtain the distance M between the laser ranging device 1 and the laser target 41The horizontal inclination angle of the laser distance measuring device 1 measured by the angle measuring device 3 is alpha1According to the trigonometric function, the horizontal distance L between the laser distance measuring device 1 and the laser target 4 can be obtained1. If the total station measures that the horizontal displacement of the laser target 4 is 0, L1I.e. the actual horizontal distance between the laser distance measuring device 1 and the laser target 4, by comparing L1And L0And the horizontal displacement and the moving direction of the foundation pit can be obtained. If the total station measures that the horizontal displacement of the laser target 4 is N1The actual horizontal distance between the laser distance measuring device 1 and the laser target 4 is (L)1-N1) By comparison (L)1-N1) And L0And the horizontal displacement and the moving direction of the foundation pit can be obtained. When the laser target 4 moves in the horizontal direction away from the laser range finder 1, N is1Is a positive value; if the laser target 4 moves in the horizontal direction close to the laser ranging device 1, N1Is negative.
Because total powerstation and laser rangefinder 1 distribute in different positions, the plane of reflection 41 when both measure the centre of a target of laser mark target 4 probably is different, for this reason, for make things convenient for the total powerstation to measure, see figure 4, laser mark target 4 is the triangular prism form, and the three side of laser mark target 4 is plane of reflection 41, all pastes the reflector plate on the three side, guarantees that total powerstation and laser rangefinder 1 homoenergetic launch to laser mark target 4.
Referring again to fig. 1, the laser target 4 is fixed to the ground by a vertical rod 5. The laser target 4 is installed on the upper portion of the vertical rod 5, the lower portion of the vertical rod 5 is deeply buried in the soil through the flange seat 6, the buried depth is not lower than 1 meter of the ground surface, and the laser target 4 is used for stabilizing the whole laser target.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. The utility model provides a foundation ditch horizontal displacement monitoring devices which characterized in that includes:
a mounting structure (2), the mounting structure (2) comprising a base (22) and a mounting bracket (21), the base (22) being configured to be disposed on a crown beam (100) of the foundation pit, the mounting bracket (21) being angularly adjustably disposed on the base (22);
the laser ranging device (1), the laser ranging device (1) is arranged on the mounting rack (21);
an angle measuring device (3), the angle measuring device (3) being used for measuring the inclination angle of the mounting frame (21);
foundation ditch horizontal displacement monitoring devices still includes laser mark target (4), laser mark target (4) set up in outside the influence range of foundation ditch, be used for the reflection the laser that laser rangefinder (1) launched.
2. The foundation pit horizontal displacement monitoring device of claim 1, wherein the mounting frame (21) comprises a first connecting plate (211), a plurality of first adjusting holes (2111) are formed in the first connecting plate (211), the base (22) comprises a second connecting plate (221), a plurality of second adjusting holes (2211) are formed in the second connecting plate (221), and a fastener can be selectively connected with one of the first adjusting holes (2111) and one of the second adjusting holes (2211) to adjust the inclination angle of the mounting frame (21) relative to the base (22).
3. The foundation pit horizontal displacement monitoring device as claimed in claim 2, wherein the first connecting plate (211) is provided with a first pre-installation hole (2112), the second connecting plate (221) is provided with a second pre-installation hole (2212), and a connecting member is arranged in the first pre-installation hole (2112) and the second pre-installation hole (2212) in a penetrating manner, so that the mounting frame (21) is rotatably connected to the base (22).
4. The foundation pit horizontal displacement monitoring device of claim 2, characterized in that, the mounting bracket (21) still includes the first mounting panel (212) that is the contained angle setting with first connecting plate (211), laser rangefinder (1) is connected on first mounting panel (212), angle measuring device (3) measures the inclination of first mounting panel (212) relative to the horizontal plane.
5. The foundation pit horizontal displacement monitoring device of claim 2, characterized in that the base (22) further comprises a second mounting plate (222) arranged at an angle to the second connecting plate (221), the second mounting plate (222) being connected to the crown beam (100).
6. The foundation pit horizontal displacement monitoring device of claim 5, wherein the crown beam (100) is provided with a mounting pier (200), and the second mounting plate (222) is connected to the mounting pier (200).
7. The foundation pit horizontal displacement monitoring device of claim 6, wherein the mounting pier (200) is a concrete structure.
8. The foundation pit horizontal displacement monitoring device of claim 1, further comprising a total station for measuring the displacement of the laser target (4) to correct the horizontal displacement of the foundation pit.
9. The foundation pit horizontal displacement monitoring device according to claim 8, characterized in that the laser target (4) is triangular prism-shaped, and three sides of the laser target (4) are all reflecting surfaces (41).
10. The foundation pit horizontal displacement monitoring device of any one of claims 1-9, further comprising:
the data acquisition module is used for acquiring a distance value measured by the laser ranging device (1) and an inclination angle value measured by the angle measuring device (3);
and the calculation module is used for calculating the horizontal displacement of the foundation pit according to the distance value measured by the laser ranging device (1) and the inclination angle value measured by the angle measurement device (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020864673.2U CN212477846U (en) | 2020-05-21 | 2020-05-21 | Foundation pit horizontal displacement monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020864673.2U CN212477846U (en) | 2020-05-21 | 2020-05-21 | Foundation pit horizontal displacement monitoring device |
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| CN212477846U true CN212477846U (en) | 2021-02-05 |
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| CN202020864673.2U Active CN212477846U (en) | 2020-05-21 | 2020-05-21 | Foundation pit horizontal displacement monitoring device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112964191A (en) * | 2021-03-25 | 2021-06-15 | 四川合众精准科技有限公司 | Micro-deformation laser collimation measurement method |
| CN113653107A (en) * | 2021-08-05 | 2021-11-16 | 中国建筑第八工程局有限公司 | Foundation pit monitoring method and system based on 5G + informatization |
| CN114182767A (en) * | 2021-12-23 | 2022-03-15 | 上海先行建设监理有限公司 | Device and method for monitoring construction of deep foundation pit adjacent to existing railway |
-
2020
- 2020-05-21 CN CN202020864673.2U patent/CN212477846U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112964191A (en) * | 2021-03-25 | 2021-06-15 | 四川合众精准科技有限公司 | Micro-deformation laser collimation measurement method |
| CN112964191B (en) * | 2021-03-25 | 2022-11-04 | 四川合众精准科技有限公司 | Micro-deformation laser collimation measurement method |
| CN113653107A (en) * | 2021-08-05 | 2021-11-16 | 中国建筑第八工程局有限公司 | Foundation pit monitoring method and system based on 5G + informatization |
| CN114182767A (en) * | 2021-12-23 | 2022-03-15 | 上海先行建设监理有限公司 | Device and method for monitoring construction of deep foundation pit adjacent to existing railway |
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