CN212336117U - Position finding control rod and deep foundation pit slope top horizontal displacement monitoring system - Google Patents
Position finding control rod and deep foundation pit slope top horizontal displacement monitoring system Download PDFInfo
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- CN212336117U CN212336117U CN202020268264.6U CN202020268264U CN212336117U CN 212336117 U CN212336117 U CN 212336117U CN 202020268264 U CN202020268264 U CN 202020268264U CN 212336117 U CN212336117 U CN 212336117U
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Abstract
The utility model discloses a position finding control rod and a deep foundation pit slope top horizontal displacement monitoring system, which comprises a laser range finder, a reflection target, a position finding control rod and a rearview reflection pier; the reflection target is arranged at a design point position at the edge of the foundation pit, the design point position is taken as a vertical point, a rear-view reflection pier is arranged on a vertical line along the direction vertical to the side line of the foundation pit, the distance between the rear-view reflection pier and the reflection target is more than three times of the pit depth distance, a connecting line of the reflection target and the rear-view reflection pier is provided with a position measuring control rod, the position measuring control rod is inserted with a measuring point control panel, a laser range finder is arranged on the measuring point control panel through a supporting component, and the reflection target and the rear-view reflection pier are provided with laser receiving plates so that the laser beam is focused at the center of the laser receiving. The position finding control rod is arranged on a connecting line of the reflection target and the rearview reflection pier, construction is not influenced, the distance between the rearview reflection pier and the side of the foundation pit is increased in multiples, and the problem that the fixed pier of the distance measuring instrument is damaged by construction is effectively solved.
Description
Technical Field
The utility model belongs to the technical field of civil engineering monitoring, especially, relate to a position finding control lever and deep basal pit hillside top horizontal displacement monitoring system.
Background
With the increasing of the scale and the depth of the foundation pit, the form of a supporting structure continuously appears, foundation pit monitoring projects are increased, and according to the requirements of the existing technical specification for monitoring the building foundation pit engineering (GB50497-2009) and the technical specification for monitoring the urban rail transit engineering (GB50911-2013), the horizontal displacement detection for positioning the supporting pile (wall) is of great importance to the safety control of the whole foundation pit and is one of the conventional indexes for monitoring the safety of the foundation pits at all levels.
At present, a total station method and a laser range finder method are generally adopted for measurement, but the total station has higher technical requirements on field conditions and operators, a high-quality datum point and an observation pier need to be manufactured before measurement, the instrument and labor cost of the total station is higher, and the laser range finder method is popularized and used in the industry by virtue of the advantages of simplicity and convenience in operation, accurate measurement data and the like.
The laser range finder method is characterized in that a range finder is fixed outside a foundation pit excavation influence range (three times of the depth of a foundation pit), a reflective target is arranged on the slope top of the foundation pit, then infrared rays emitted by the laser range finder are aimed at a target center of the reflective target, or a cross wire of a display screen of the range finder is aimed at the target center to directly measure the distance between the reflective target and the infrared target, and the difference of the two distances is measured according to monitoring frequency, namely the variation of the horizontal displacement of the top of the foundation pit.
However, the laser ranging method has some problems in practical operation, and the problems are as follows:
1. with the increase of the excavation depth and scale of the foundation pit, the distance of the three times of pit depth is long, and the situation exceeds the effective measurement range of the laser range finder, so that the measured data is inaccurate;
2. there is equipment mechanical construction usually in the foundation ditch periphery, often can appear being used for the destroyed condition of the anchor block of fixed laser range finder, leads to adjacent two sets of measuring result to be discontinuous, and measuring error is big to influence the safety of foundation ditch and prevent and control.
Therefore, aiming at the technical problem, the deep foundation pit slope top horizontal displacement monitoring system capable of increasing the effective measurement range is provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a simple structure, easy operation, increase effective measuring range, measurement accuracy height, measurement are with low costs position finding control lever.
Another object of the utility model is to provide a deep basal pit hillside top horizontal displacement monitoring system.
The technical scheme of the utility model as follows:
the utility model provides a position finding control lever, includes the body of rod, installs measurement station control panel on the body of rod, sets up the supporting component on the measurement station control panel, the bottom of measurement station control panel is formed with this body of rod matched with plug, the edge of measurement point control panel is formed with ascending arch in order to be used for the location supporting component, supporting component includes the tripod and is used for supporting laser range finder's support, the pedestal mounting is in the top of tripod.
In the technical scheme, the support comprises a base plate, a laser range finder clamping groove, a horizontal fine tuning screw and a vertical fine tuning screw, the base plate is L-shaped, the horizontal fine tuning screw is arranged on the side face of the L-shaped base plate, the vertical fine tuning screw is arranged on the top end of the L-shaped base plate, and the laser range finder clamping groove is formed in the base plate along the horizontal direction, so that the laser range finder is clamped in the laser range finder clamping groove.
In the technical scheme, the circumference diameter of the tripod in the opening state is equal to the inner diameter of the measuring point control disc.
A deep foundation pit slope top horizontal displacement monitoring system comprises a position finding control rod, a laser range finder, a reflection target and a rearview reflection pier;
the laser range finder is arranged on the measuring point control panel through a supporting component, and laser receiving plates are arranged on the reflection target and the rear view reflection pier and used for reflecting laser beams emitted by the laser range finder to enable the laser beams to be focused on the center of the laser receiving plates.
In the technical scheme, 2 reflection targets are arranged on each horizontal monitoring line, the two reflection targets are respectively arranged on two sides of a foundation pit and located at safe distances on two sides of the foundation pit, each reflection target comprises an inserted bar used for fixing and a support frame arranged at the top of the inserted bar, a pointed end is formed at the bottom of the inserted bar and used for being inserted into soil, the inserted bar is hollow inside, a directional groove is formed inside the inserted bar, and a laser receiving plate is arranged on the support frame.
In the above technical solution, the support frame includes a fixed plate and a movable plate disposed at one side of the fixed plate, and the bottom of the movable plate is connected to the fixed plate to form a clamping plate structure, and the movable plate forms a hollow frame to enable the laser receiving plate to be inserted into the movable plate, so that the light beam of the laser range finder is focused on the laser receiving plate.
In the technical scheme, the rear-view reflection pier is a cylindrical or cubic concrete foundation which is poured in advance and is used for arranging the laser receiving plate.
In the technical scheme, the laser range finder adopts a handheld laser range finder, and the precision is 0.1 mm.
In the above technical solution, the laser receiving plate is printed with a cross-shaped centering mark.
In the technical scheme, the laser receiving plate is adhered to the reflection target and the rearview reflection pier through nail-free glue. The utility model has the advantages and positive effects that:
1. the position measuring control rod is arranged on a connecting line of the reflection target and the rearview reflection pier, so that construction is not influenced, the distance between the rearview reflection pier and the side of the foundation pit is increased in multiples, and the problem that the range finder fixing pier is damaged by construction in a conventional laser range finding method is effectively solved.
2. The laser range finder is located in the middle of the rear-view reflection pier and the reflection target, and can effectively ensure that the measurement distance does not exceed the range of the range finder, so that the accuracy of the measurement result is ensured, and the horizontal displacement change condition of the slope top of the foundation pit can be truly reflected.
3. The positioning control points are simple and convenient to arrange, can be replenished in time even if damaged, the measuring point control panel can be repeatedly recycled, the manufacturing cost is low, the manufacture is simple, and the rearview reflection piers can be recycled and reused.
Drawings
FIG. 1 is a schematic structural view of a deep foundation pit slope top horizontal displacement monitoring system of the present invention;
FIG. 2 is a schematic structural view of the support in the present invention;
FIG. 3 is a schematic structural diagram of a reflective target according to the present invention;
fig. 4 is a schematic structural diagram of the middle measuring point control panel of the present invention.
In the figure:
1. laser range finder 2, reflection target 3 and position finding control rod
4. Measuring point control panel 5, rear-view reflection pier 6 and support
7. Tripod 8, inserted bar 9, support frame
10. Laser receiving board
Detailed Description
The present invention will be described in further detail with reference to specific examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the present disclosure, as defined by the following claims.
Example 1
As shown in the figure, the deep foundation pit slope top horizontal displacement monitoring system comprises a laser range finder 1, a reflection target 2, a position finding control rod 3 and a rear-view reflection pier 5;
each horizontal monitoring line is provided with 2 reflecting targets 2, the two reflecting targets 2 are respectively arranged at the two sides of the foundation pit and are positioned at the safe distance of the two sides of the foundation pit, the reflecting targets 2 are arranged at the design points of the edge of the foundation pit, the design point position is taken as a vertical point, a rear-view reflection pier 5 is arranged on a vertical line along a direction vertical to the side line of the foundation pit, the distance between the rear-view reflection pier 5 and the reflection target 2 is more than three times of the pit depth distance, a position measuring control rod 3 is arranged on a connecting line of the reflection target 2 and the rear-view reflection pier 5, a position measuring control panel 4 is inserted in the position measuring control rod 3, the laser range finder 1 is arranged on the measuring point control panel 4 through a supporting component, and the reflection target 2 and the rearview reflection pier 5 are provided with laser receiving plates 10 for reflecting laser beams emitted by the laser range finder 1 so that the laser beams are focused at the center of the laser receiving plates 10.
Further, each of the reflective targets 2 comprises an insertion rod 8 for fixing and a support frame 9 installed on the top of the insertion rod 8, the bottom of the insertion rod 8 is formed with a pointed end for inserting into the soil, the inside of the insertion rod 8 is hollow, a directional groove is formed inside the insertion rod 8, and a laser receiving plate 10 is arranged on the support frame 9; the support frame 9 includes a fixed plate and a movable plate disposed at one side of the fixed plate, and the bottom of the movable plate is connected to the fixed plate to form a clamping plate structure, and the movable plate forms a hollow frame so that the laser receiving plate 10 is inserted into the movable plate, and the light beam of the laser range finder 1 is focused on the laser receiving plate 10.
Furthermore, the bottom of the position measuring control rod 3 is inserted into the ground, the bottom of the measuring point control panel 4 is provided with a plug matched with the position measuring control rod 3, the edge of the measuring point control panel 4 is provided with an upward bulge for positioning the support assembly, the support assembly comprises a tripod 7 and a support 6 for supporting the laser range finder 1, and the support 6 is installed at the top of the tripod 7; the diameter of the circumference of the tripod 7 in the open state is equal to the inner diameter of the measuring point control disc 4, so that the tripod 7 is in the open state to ensure that the position of the laser distance measuring instrument 1 is unchanged during each measurement.
Further, the support 6 comprises a base plate, a clamping groove of the laser range finder 1, a horizontal fine tuning screw and a vertical fine tuning screw, the base plate is L-shaped, the horizontal fine tuning screw is arranged on the side face of the L-shaped base plate, the vertical fine tuning screw is arranged on the top end of the L-shaped base plate, and the clamping groove of the laser range finder 1 is formed in the base plate along the horizontal direction, so that the laser range finder 1 is clamped in the clamping groove of the laser range finder 1.
Further, the rear-view reflection pier 5 is a concrete foundation of a cylinder or a cube that is poured in advance for arranging the laser receiving panel 10.
Further, the laser range finder 1 adopts a handheld laser range finder 1, and the precision is 0.1 mm.
Furthermore, the bottom of the position measuring control rod is inserted into a position measuring control pile poured in advance, the foundation is reinforced, and an insertion pipe is reserved on the position measuring control pile and used for being matched with and inserted into the position measuring control rod.
The measuring point control panel 4 is simple in structure, can be taken away from the site after measurement, and is convenient to carry.
Example 2
On the basis of the embodiment 1, the using method of the deep foundation pit slope top horizontal displacement monitoring system comprises the following steps:
(1) arranging a measuring point control panel 4 on a position measuring control rod 3, opening a tripod 7 and fixing the tripod on the measuring point control panel 4, and installing a laser range finder 1 on a support 6 on the tripod 7 so as to ensure that the position of the laser range finder 1 is unchanged during each measurement;
(2) pouring concrete into a cylindrical shape at the rearview reflection pier 5, installing a laser receiving plate 10 on the rearview reflection pier 5, and installing the laser receiving plate 10 on the reflection target 2, wherein the position of the laser receiving plate 10 is vertical to the measuring line;
(3) after a visible lens of the laser range finder 1 is used for searching the reflection target 2 and the rear-view reflection pier 5, the centering cross wire is aligned to the centers of the rear-view reflection pier 5 and the laser receiving plate 10 of the reflection target 2 through the horizontal fine tuning screw and the vertical fine tuning screw, the distance between the laser range finder 1 and the reflection target 2 and the distance between the laser range finder 1 and the rear-view reflection pier 5 are respectively measured, the two distances are summed, and the difference value between the two distances and the next measurement distance is used as the change value of the horizontal displacement of the slope top of the foundation pit.
Example 3
On the basis of embodiment 1, the laser receiving plate 10 is printed with centering marks in a cross shape.
Further, the laser receiving plate 10 is adhered to the reflective target 2 and the rear-view reflective pier 5 by a nail-free adhesive.
The rearview reflection pier 5 can be recycled, so that the cost is saved, and the monitoring efficiency is improved.
Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All equivalent changes, modifications and the like made in accordance with the scope of the present invention should still fall within the scope of the patent coverage of the present invention.
Claims (10)
1. A position finding control lever, comprising: including the body of rod, install the measurement station control panel on the body of rod, set up the supporting component on the measurement station control panel, the bottom of measurement station control panel is formed with this body of rod matched with plug, the edge of measurement point control panel is formed with ascending arch in order to be used for the location supporting component, supporting component includes the tripod and is used for supporting laser range finder's support, the pedestal mounting is in the top of tripod.
2. Positioning lever according to claim 1, characterized in that: the support comprises a base plate, a laser range finder clamping groove, a horizontal fine tuning screw and a vertical fine tuning screw, the base plate is L-shaped, the side face of the L-shaped base plate is provided with the horizontal fine tuning screw, the top end of the L-shaped base plate is provided with the vertical fine tuning screw, and the base plate is horizontally provided with the laser range finder clamping groove so that the laser range finder is clamped in the laser range finder clamping groove.
3. Positioning lever according to claim 2, characterized in that: the circumference diameter is equal to the internal diameter of the measuring point control disc under the opening state of the tripod.
4. The utility model provides a deep basal pit hillside top horizontal displacement monitoring system which characterized in that: the positioning control rod, the laser range finder, the reflection target and the rear-view reflection pier are included according to claim 3;
the laser range finder is arranged on the measuring point control panel through a supporting component, and laser receiving plates are arranged on the reflection target and the rear view reflection pier and used for reflecting laser beams emitted by the laser range finder to enable the laser beams to be focused on the center of the laser receiving plates.
5. The deep foundation pit crest horizontal displacement monitoring system of claim 4, wherein: be equipped with 2 reflection targets on each horizontal monitoring line, two reflection targets set up respectively in the both sides of foundation ditch and are located the safe distance department of foundation ditch both sides, every the reflection target is including being used for fixed inserted bar and installing the support frame at the inserted bar top, the bottom of inserted bar is formed with the pointed end in order to be used for inserting the soil body, the inside cavity of inserted bar, and be formed with the directional groove in this inserted bar inside, set up the laser receiver board on the support frame.
6. The deep foundation pit crest horizontal displacement monitoring system of claim 5, wherein: the support frame comprises a fixed plate and a movable plate arranged on one side of the fixed plate, the bottom of the movable plate is connected with the fixed plate to form a clamping plate structure, the movable plate forms a hollow frame so that the laser receiving plate is inserted into the movable plate, and light beams of the laser range finder are focused on the laser receiving plate.
7. The deep foundation pit crest horizontal displacement monitoring system of claim 6, wherein: the rear-view reflection pier is a cylindrical or cubic concrete foundation which is poured in advance and is used for arranging the laser receiving plate.
8. The deep foundation pit crest horizontal displacement monitoring system of claim 7, wherein: the laser range finder adopts hand-held type laser range finder, and the precision is 0.1 mm.
9. The deep foundation pit crest horizontal displacement monitoring system of claim 8, wherein: the laser receiving plate is printed with a cross-shaped centering mark.
10. The deep foundation pit crest horizontal displacement monitoring system of claim 9, wherein: the laser receiving plate is adhered to the reflection target and the rearview reflection pier through nail-free glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020268264.6U CN212336117U (en) | 2020-03-06 | 2020-03-06 | Position finding control rod and deep foundation pit slope top horizontal displacement monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020268264.6U CN212336117U (en) | 2020-03-06 | 2020-03-06 | Position finding control rod and deep foundation pit slope top horizontal displacement monitoring system |
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| Publication Number | Publication Date |
|---|---|
| CN212336117U true CN212336117U (en) | 2021-01-12 |
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| CN202020268264.6U Active CN212336117U (en) | 2020-03-06 | 2020-03-06 | Position finding control rod and deep foundation pit slope top horizontal displacement monitoring system |
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| CN (1) | CN212336117U (en) |
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- 2020-03-06 CN CN202020268264.6U patent/CN212336117U/en active Active
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