CN112177063A - Foundation pit construction monitoring device and foundation pit monitoring method - Google Patents
Foundation pit construction monitoring device and foundation pit monitoring method Download PDFInfo
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- CN112177063A CN112177063A CN202011057872.3A CN202011057872A CN112177063A CN 112177063 A CN112177063 A CN 112177063A CN 202011057872 A CN202011057872 A CN 202011057872A CN 112177063 A CN112177063 A CN 112177063A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 28
- 238000010276 construction Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000012806 monitoring device Methods 0.000 title claims abstract description 15
- 238000001514 detection method Methods 0.000 claims abstract description 46
- 238000005259 measurement Methods 0.000 claims abstract description 11
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 19
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 19
- 241001330002 Bambuseae Species 0.000 claims description 19
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 19
- 239000011425 bamboo Substances 0.000 claims description 19
- 238000009412 basement excavation Methods 0.000 claims description 6
- 239000003550 marker Substances 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 3
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
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Abstract
The application relates to a foundation pit construction monitoring device and a foundation pit monitoring method, which comprise a detection target arranged in a foundation pit and a total station arranged outside the foundation pit, wherein the detection target comprises a base, an adjusting rod and a prism; the top of the base is rotatably provided with a vertical driving screw, the bottom end of the adjusting rod is provided with a thread slot matched with the driving screw, one side of the adjusting rod is fixedly connected with a limiting lantern ring, the base is fixedly provided with a limiting rod, the limiting lantern ring is sleeved on the limiting rod in a sliding manner, and the bottom end of the driving screw is connected with a driving piece; adjust the pole top and rotate and be connected with the down tube, be provided with between down tube and the regulation pole and be used for adjusting the down tube and adjust the angle positioning subassembly of contained angle size between the pole, be provided with first string rope and second string rope on the down tube, the prism is connected in first string rope bottom, and the second is hung the rope bottom and is connected with the plummet. This application has the position control that realizes swift accurate carrying on the prism, finally makes operating personnel high-efficient convenient effect when carrying out the measurement of detection target.
Description
Technical Field
The application relates to the technical field of foundation pit construction monitoring, in particular to a foundation pit construction monitoring device and a foundation pit monitoring method.
Background
For large-scale complex engineering, prototype monitoring is the key to guarantee foundation pit engineering. In order to ensure the safety and predictability of various foundation pit constructions, it is very important to make corresponding monitoring schemes and measures according to actual conditions in addition to safe and reasonable foundation pit support design schemes. By summarizing and analyzing monitoring data, the design scheme of the deep foundation pit support is optimized, and guidance and supervision are carried out in the whole construction process to ensure the construction safety.
The Chinese patent with the authorization notice number of CN106638535B retrieved now discloses a foundation pit construction site monitoring device and a method, which comprises a base, an adjusting rod and a prism; the base is used for being placed at a detection point position; the adjusting rod is fixed on the base and comprises a vertical rod and an inclined rod; the prism is arranged on the adjusting rod, and the inclined rod and the vertical rod form a specific angle exceeding 15 degrees; the prism is fixed at the top end of the inclined rod through a first hanging rope with a specific length; a plumb is hung on the upper half part of the inclined rod through a second hanging rope with adjustable length; during measurement, the height of the prism is determined through the total station, so that the plumb bob and the detection point are located at the same horizontal position, a point on the second hanging rope, which is located at the same horizontal plane as the prism, is determined, and the distance between the point and the plumb bob is determined; determining the height of the detection point according to the distance and the height of the prism, thereby determining the uplift deformation data of the detection point.
However, the above scheme has the following defects: wherein the prism that is used for the monitoring is installed on the base, but the regulation pole length on the base needs the manual work to rotate when adjusting as required and adjust pole/base and guarantee simultaneously that base/regulation pole remain motionless, and the operation is comparatively difficult, and the angle between down tube and the regulation pole top also can't be adjusted simultaneously for there is great limitation in the position control of prism, is unfavorable for the monitoring of foundation ditch, has to treat further improvement.
Disclosure of Invention
In order to realize rapid and accurate measurement of the bottom uplift of the foundation pit, the application provides a foundation pit construction monitoring device and a foundation pit monitoring method.
In a first aspect, the application provides a foundation ditch construction monitoring devices, adopts following technical scheme:
a foundation pit construction monitoring device comprises a detection target arranged in a foundation pit and a total station arranged outside the foundation pit, wherein the detection target comprises a base, an adjusting rod and a prism; the top of the base is rotatably provided with a vertical driving screw, the bottom end of the adjusting rod is provided with a threaded slot matched with the driving screw, one side of the adjusting rod is fixedly connected with a limiting sleeve ring, the base is fixedly provided with a limiting rod, the limiting sleeve ring is sleeved on the limiting rod in a sliding manner, and the bottom end of the driving screw is connected with a driving piece for driving the driving screw to rotate; the top of the adjusting rod is rotatably connected with an oblique rod, the oblique rod is rotated to be horizontal in the axial direction, an angle positioning assembly used for adjusting the size of a included angle between the oblique rod and the adjusting rod is arranged between the oblique rod and the adjusting rod, a first hanging rope and a second hanging rope are arranged on the oblique rod, the prism is connected to the bottom end of the first hanging rope, and the bottom end of the second hanging rope is connected with a plumb bob.
By adopting the technical scheme, when the bottom bulge of the foundation pit is measured, the base of the monitored target can be arranged at a designated position, the driving screw is driven to rotate by the driving piece, the adjusting rod is in threaded connection with the adjusting rod, and one side of the adjusting rod is sleeved on the limiting rod through the limiting lantern ring in a sliding manner, so that the adjusting rod can move and lift in the vertical direction, and the height of the inclined rod can be quickly adjusted; simultaneously, the bottom of down tube is connected with rotating between the regulation pole to realize rotating to appointed angle when needing under the angle locating component effect, further realize swift accurate carrying on the position control of prism, finally make operating personnel more high-efficient convenient when carrying out the measurement of detection target, also make simultaneously to measure more accurately.
Preferably, the driving part is a driving motor fixedly mounted on the base, an output shaft of the driving motor is horizontally arranged and connected with a first bevel gear at the end part, and a second transmission bevel gear meshed with the first bevel gear is coaxially mounted at the bottom end of the driving screw rod.
Through adopting above-mentioned technical scheme, utilize the transmission of first bevel gear and second bevel gear to realize that driving motor drives drive screw and rotates, and then the drive adjusts the pole and moves in vertical direction, easy to carry out, the cost is lower, is suitable for the construction to detect and makes the use.
Preferably, the base is fixedly provided with a signal receiver, the signal receiver is connected with a processor, the processor is in control connection with the driving motor, and the signal receiver is in wireless connection with a signal transmitter.
Through adopting above-mentioned technical scheme, use signal transmitter can realize the control to driving motor, and then need not the artifical drive screw that rotates of operating personnel for adjust the position control of pole can convenient and fast more.
Preferably, the top of the adjusting rod is fixedly provided with a mounting block, the mounting block is rotatably provided with a rotating column which is horizontal in the axial direction, the inclined rod is vertically connected to one end of the rotating column, and the other end of the rotating column penetrates through the mounting block and is connected with the angle positioning assembly.
Through adopting above-mentioned technical scheme, realize the rotation of down tube bottom at the regulation pole top and connect to the angle of control down tube is realized to the turned angle who rotates the post through angle positioning assembly control, makes the structure meet the list more, easily realizes.
Preferably, the angle location subassembly is including setting up stopper on the installation piece, run through on the stopper seted up with rotate the coaxial spacing circular slot of post, spacing circular slot diameter is greater than rotate the post, it stretches out to rotate the post tip spacing circular slot, the angle location subassembly still includes that the slip cover is established at the spacing section of thick bamboo on rotating the post, spacing section of thick bamboo with rotate the synchronous rotation of post, a plurality of first spouts have been seted up at the first angular interval on the circumference inner wall of spacing circular slot, first spout is followed spacing circular slot axial extension and the terminal surface of stopper is uncovered setting, be provided with on the circumference outer wall of spacing section of thick bamboo with first spout grafting complex first lug.
Through adopting above-mentioned technical scheme, utilize and rotate the synchronous pivoted spacing section of thick bamboo setting of sliding on rotating the post of post, after spacing section of thick bamboo slided to spacing circular slot, first lug on it makes spacing section of thick bamboo obtain the rotation restriction with the grafting effect of first spout down, the rotation of rotating the post promptly obtains the restriction, thereby when the post is rotated to a certain angle promptly to needs the down tube, rotatable rotation post and to suitable angle, slide into spacing circular slot with spacing section of thick bamboo again and can realize the angle fixation between down tube and the installation piece, the regulative mode is swift simple, operating personnel can very convenient and fast's completion when needs change angle.
Preferably, the rotation post stretches out set up the second spout along axial extension on the cylinder outer wall of stopper, spacing section of thick bamboo slides to paste and touches be equipped with on the circumference inner wall of rotation post and slide to insert to connect to second lug in the second spout, the second spout is close to the one end of stopper stretches into in the spacing circular slot, work as the second lug slides extremely the second spout is kept away from during the one end of stopper, spacing section of thick bamboo is whole to be in outside the spacing circular slot.
Through adopting above-mentioned technical scheme, utilize the second lug of spacing section of thick bamboo to stretch into the synchronous rotation that realizes spacing section of thick bamboo and rotation post in the second spout of rotating the strip, and second spout one end stretches into spacing circular slot, makes spacing section of thick bamboo can slide smoothly to spacing circular slot in, realizes fixed rotation post, and spacing section of thick bamboo can wholly extract spacing circular slot simultaneously, realizes relieving the rotation restriction that rotates the post, and then adjusts the angle between down tube and the regulation pole as required.
In a second aspect, the present application provides a foundation pit monitoring method, which adopts the following technical scheme:
a foundation pit monitoring method comprises the following steps:
s1, arranging a monitoring target in the center of the foundation pit;
s2, arranging a plurality of detection points around the center of the foundation pit, and burying a marker post at each detection point;
s3, setting a reference point at a position which is not influenced by the foundation pit;
s4, before each measurement, the total station corrects the position coordinates of the total station through a datum point;
s5, adjusting the adjustable rod and the diagonal rod to enable the prism to be located in the view of the total station;
s6, determining the height of the prism through a total station;
s7, changing the length of the second hanging rope to enable the plumb bob and the detection point to be located at the same horizontal position;
s8, determining a point on the second hanging rope, which is on the same horizontal plane as the prism, through a level meter, and determining the distance between the point and the plumb bob;
s9, calculating the difference between the height of the prism and the distance, and determining the height of the detection point;
s10, determining the uplift heights of other detection points through the height difference between the marker posts of the other detection points and the center detection point of the foundation pit;
s11, determining deformation data of all detection points at the bottom of the foundation pit according to the measured heights of all the detection points and the initial heights of the detection points;
and S12, recording the measured deformation data, monitoring the deformation data, and alarming when the deformation data exceeds a threshold value.
Through adopting above-mentioned technical scheme, realize accurate swift monitoring point to in the foundation ditch and detect, and then can be on foundation ditch basis safe effectual other construction work that carries on after finishing the foundation ditch monitoring.
Preferably, the step 11 further includes recording the excavation depth at each measurement, calculating a ratio between the difference of the uplift amount and the difference of the excavation depth, and alarming when the ratio exceeds a specific threshold.
By adopting the technical scheme, the safety of the foundation pit is effectively prevented and controlled, and the smooth development of subsequent work is ensured.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the monitoring target in the foundation pit can be quickly and conveniently adjusted and positioned, so that subsequent monitoring can be conveniently and smoothly carried out;
2. the monitoring and calculation of the foundation pit are fast and accurate, and the safety of foundation pit construction is further effectively guaranteed.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;
fig. 2 is a schematic structural diagram of an angle positioning assembly according to an embodiment of the present application.
Reference numerals: 1. a base; 2. adjusting a rod; 3. a diagonal bar; 4. a triangular bracket; 5. a drive screw; 6. a connecting rod; 7. a limiting lantern ring; 8. a limiting rod; 9. a drive motor; 10. a first bevel gear; 11. a second bevel gear; 12. mounting blocks; 13. a limiting block; 14. a limiting circular groove; 15. a first chute; 16. a first bump; 17. a second chute; 18. a second bump; 19. a first hanging rope; 21. a second hanging rope; 22. a prism; 23. a plumb bob; 24. rotating the column; 25. a limiting cylinder.
Detailed Description
The present application is described in further detail below with reference to the accompanying drawings.
The embodiment of the application discloses foundation ditch construction monitoring devices, refer to fig. 1, including arranging the detection target in the foundation ditch in and arranging the total powerstation (not shown in the figure) that carries out the measurement to the detection target outside the foundation ditch in. The detection target comprises a base 1, an adjusting rod 2 and an inclined rod 3 rotatably arranged at the top end of the adjusting rod 2. A triangular support 4 used for being stably placed is installed at the bottom of the base 1, a vertical driving screw rod 5 is rotatably connected to the top of the base 1, and the bottom end of the driving screw rod 5 is rotatably connected with the base 1 through a bearing. The bottom end of the adjusting rod 2 is provided with a thread slot which is in thread fit with the driving screw 5, a connecting rod 6 is radially distributed on one side of the adjusting rod 2, and one end of the connecting rod 6, which is far away from the adjusting rod 2, is provided with a hollow limiting lantern ring 7 which is parallel to the adjusting rod 2; meanwhile, the base 1 is vertically and fixedly connected with a limiting rod 8 at one side of the driving screw 5, and the limiting rod 8 penetrates through the limiting sleeve ring 7 and is in sliding fit with the limiting sleeve ring 7. When the driving screw 5 rotates, the adjusting lever 2 is driven to move up and down. And in order to adjust the height of the adjusting rod 2 more conveniently and rapidly, a driving piece for driving the adjusting rod to rotate is connected to the bottom end of the driving screw rod 5. The driving piece is a driving motor 9 fixedly installed on the base 1, a first bevel gear 10 is coaxially installed at the bottom end of the driving screw rod 5, a second bevel gear 11 meshed with the first bevel gear 10 is fixedly connected to the tail end of an output shaft of the driving motor 9, and then the driving screw rod 5 can be driven to rotate after the driving motor 9 is started, namely, the adjustment of the adjusting rod 2 in the vertical direction is achieved.
In order to facilitate the use of the driving motor 9, a signal receiver (not shown in the figure) is fixedly mounted on the base 1, the signal receiver is connected with a processor (not shown in the figure), the processor is in control connection with the driving motor 9, and the signal receiver is wirelessly connected with a signal transmitter (not shown in the figure).
Referring to fig. 2, a mounting block 12 is fixedly arranged at the top of the adjusting rod 2, an axial horizontal rotating column 24 is rotatably arranged on the mounting block 12, the inclined rod 3 is vertically connected to one end of the rotating column 24, and the other end of the rotating column 24 penetrates through the mounting block 12 and is connected with the angle positioning assembly. The angle positioning component comprises a limiting block 13 integrally formed on the mounting block 12, a limiting circular groove 14 coaxial with the rotating column 24 is formed in the limiting block 13 in a penetrating mode, the diameter of the limiting circular groove 14 is larger than that of the rotating column 24, and the end portion of the rotating column 24 extends out of the limiting circular groove 14. The angle positioning assembly further comprises a limiting cylinder 25 which is sleeved on the rotating column 24 in a sliding mode, the limiting cylinder 25 and the rotating column 24 rotate synchronously, a plurality of first sliding grooves 15 are formed in the circumferential inner wall of the limiting circular groove 14 at equal angular intervals, the first sliding grooves 15 axially extend along the limiting circular groove 14 and are arranged in an open mode on the end face of the limiting block 13, and first protruding blocks 16 which are matched with the first sliding grooves 15 in an inserting mode are arranged on the circumferential outer wall of the limiting cylinder 25.
For realizing spacing section of thick bamboo 25 and the synchronous rotation of rotating post 24, it sets up along axially extended second spout 17 on the cylinder outer wall of stopper 13 to rotate post 24, spacing section of thick bamboo 25 slides to be pasted and is equipped with the second lug 18 that slides and insert to connect to in second spout 17 on the circumference inner wall that rotates post 24, second spout 17 is close to the one end of stopper 13 and stretches into in the spacing circular slot 14, it is worth explaining, the length that second spout 17 stretches out spacing circular slot 14 satisfies, when second lug 18 slides to the one end that stopper 13 was kept away from to second spout 17, spacing section of thick bamboo 25 wholly is outside spacing circular slot 14, make spacing section of thick bamboo 25 not influenced with the rotation that rotates post 24.
Furthermore, after the limiting cylinder 25 slides into the limiting circular groove 14, the limiting cylinder 25 is limited in rotation under the insertion effect of the first bump 16 and the first sliding groove 15, namely, the rotation of the rotating column 24 is limited, so that when the inclined rod 3 is required, namely, the rotating column 24 reaches a certain angle, the rotating column 24 can be rotated to a proper angle, and then the limiting cylinder 25 slides into the limiting circular groove 14, so that the angle fixation between the inclined rod 3 and the mounting block 12 can be realized.
Referring to fig. 1, a first hanging rope 19 and a second hanging rope 21 are bound on the diagonal rod 3, the bottom end of the first hanging rope 19 is connected with a prism 22, and the bottom end of the second hanging rope 21 is connected with a plumb bob 23.
The implementation principle of the foundation pit construction monitoring device in the embodiment of the application is as follows: when the bottom uplift of the foundation pit is measured, the base 1 of a monitoring target can be placed at a designated position, the driving motor 9 drives the driving screw 5 to rotate, the adjusting rod 2 is in threaded connection with the adjusting rod, and one side of the adjusting rod is sleeved on the limiting rod 8 in a sliding mode through the limiting lantern ring 7, so that the adjusting rod 2 can be moved and lifted in the vertical direction, and the height of the inclined rod 3 can be quickly adjusted; meanwhile, the bottom end of the inclined rod 3 is rotatably connected with the adjusting rod 2, the inclined rod 3 is rotated to a proper angle when needed under the action of the angle positioning assembly, the position of the prism 22 is further adjusted quickly and accurately, and finally an operator is enabled to be more efficient and accurate when measuring a detection target.
The embodiment of the application further discloses a foundation pit monitoring method, which comprises the following steps:
s1, arranging a monitoring target in the center of the foundation pit;
s2, arranging a plurality of detection points around the center of the foundation pit, and burying a marker post at each detection point;
s3, setting a reference point at a position which is not influenced by the foundation pit;
s4, before each measurement, the total station corrects the position coordinates of the total station through a datum point;
s5, adjusting the adjustable rod 2 and the diagonal rod 3 to enable the prism 22 to be located in the view of the total station;
s6, determining the height of the prism 22 through a total station;
s7, changing the length of the second hanging rope 21 to enable the plumb bob 23 and the detection point to be located at the same horizontal position;
s8, determining a point on the second hanging rope 21, which is on the same horizontal plane as the prism 22, through a level meter, and determining the distance between the point and the plumb bob 23;
s9, calculating the difference between the height of the prism 22 and the distance, and determining the height of the detection point;
s10, determining the uplift heights of other detection points through the height difference between the marker posts of the other detection points and the center detection point of the foundation pit;
s11, determining deformation data of all detection points at the bottom of the foundation pit according to the measured heights of all the detection points and the initial heights of the detection points; and recording the excavation depth of each measurement, calculating the ratio of the difference value of the uplift amount to the difference value of the excavation depth, and alarming when the difference value exceeds a specific threshold value.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. A foundation pit construction monitoring device comprises a detection target arranged in a foundation pit and a total station arranged outside the foundation pit, wherein the detection target comprises a base (1), an adjusting rod (2) and a prism (22); the method is characterized in that: the top of the base (1) is rotatably provided with a vertical driving screw (5), the bottom end of the adjusting rod (2) is provided with a thread slot matched with the driving screw (5), one side of the adjusting rod (2) is fixedly connected with a limiting lantern ring (7), the base (1) is fixedly provided with a limiting rod (8), the limiting lantern ring (7) is sleeved on the limiting rod (8) in a sliding manner, and the bottom end of the driving screw (5) is connected with a driving piece for driving the driving screw to rotate; adjust pole (2) top and rotate and be connected with down tube (3), down tube (3) rotate the axial level, down tube (3) with adjust and be provided with between pole (2) and be used for adjusting down tube (3) and adjust the angle positioning assembly of contained angle size between pole (2), it hangs rope (21) to be provided with first string rope (19) and second on down tube (3), prism (22) connect in first string rope (19) bottom, the second is hung rope (21) bottom and is connected with plummet (23).
2. The ABC as claimed in claim 1, wherein: the driving piece is a driving motor (9) fixedly installed on the base (1), an output shaft of the driving motor (9) is horizontally arranged and is connected with a first bevel gear (10) at the end part, and a second transmission bevel gear meshed and connected with the first bevel gear (10) is coaxially installed at the bottom end of the driving screw (5).
3. The foundation pit construction monitoring device of claim 2, wherein: the base (1) is fixedly provided with a signal receiver, the signal receiver is connected with a processor, the processor is in control connection with the driving motor (9), and the signal receiver is in wireless connection with a signal transmitter.
4. The foundation pit construction monitoring device of claim 1, characterized in that: the top of the adjusting rod (2) is fixedly provided with a mounting block (12), the mounting block (12) is rotated to be provided with an axial horizontal rotating column (24), the inclined rod (3) is vertically connected with one end of the rotating column (24), and the other end of the rotating column (24) penetrates through the mounting block (12) and is connected with the angle positioning component.
5. The foundation pit construction monitoring device of claim 4, wherein: the angle positioning component comprises a limiting block (13) arranged on the mounting block (12), a limiting circular groove (14) coaxial with the rotating column (24) is arranged on the limiting block (13) in a penetrating way, the diameter of the limiting circular groove (14) is larger than that of the rotating column (24), the end part of the rotating column (24) extends out of the limiting circular groove (14), the angle positioning component also comprises a limiting cylinder (25) which is sleeved on the rotating column (24) in a sliding way, the limiting cylinder (25) and the rotating column (24) rotate synchronously, a plurality of first sliding grooves (15) are arranged on the circumferential inner wall of the limiting circular groove (14) at equal angular intervals, the first sliding groove (15) extends along the axial direction of the limiting circular groove (14) and is arranged at the end surface of the limiting block (13) in an open manner, and a first bump (16) which is in plug-in fit with the first sliding groove (15) is arranged on the circumferential outer wall of the limiting cylinder (25).
6. The foundation pit construction monitoring device of claim 5, wherein: rotate post (24) and stretch out set up on the cylinder outer wall of stopper (13) along axially extended second spout (17), spacing section of thick bamboo (25) slide to paste touch be equipped with on the circumference inner wall of rotation post (24) and slide to plug in to second lug (18) in second spout (17), second spout (17) are close to the one end of stopper (13) stretches into in spacing circular slot (14), work as second lug (18) slide to second spout (17) are kept away from during the one end of stopper (13), spacing section of thick bamboo (25) are whole to be in outside spacing circular slot (14).
7. A foundation pit monitoring method using the foundation pit construction monitoring apparatus according to any one of claims 1 to 6, characterized in that: the method comprises the following steps:
s1, arranging a monitoring target in the center of the foundation pit;
s2, arranging a plurality of detection points around the center of the foundation pit, and burying a marker post at each detection point;
s3, setting a reference point at a position which is not influenced by the foundation pit;
s4, before each measurement, the total station corrects the position coordinates of the total station through a datum point;
s5, adjusting the adjustable rod (2) and the diagonal rod (3) to enable the prism (22) to be located in the view of the total station;
s6, determining the height of the prism (22) through a total station;
s7, changing the length of the second hanging rope (21) to enable the plumb bob (23) and the detection point to be positioned at the same horizontal position;
s8, determining a point on the second hanging rope (21) which is on the same horizontal plane with the prism (22) through a level gauge, and determining the distance between the point and the plumb bob (23);
s9, calculating the difference between the height of the prism (22) and the distance, and determining the height of the detection point;
s10, determining the uplift heights of other detection points through the height difference between the marker posts of the other detection points and the center detection point of the foundation pit;
s11, determining deformation data of all detection points at the bottom of the foundation pit according to the measured heights of all the detection points and the initial heights of the detection points;
and S12, recording the measured deformation data, monitoring the deformation data, and alarming when the deformation data exceeds a threshold value.
8. The foundation pit monitoring method according to claim 7, wherein: in the step 11, the method further includes recording the excavation depth at each measurement, calculating a ratio between the difference of the uplift amount and the difference of the excavation depth, and alarming when the ratio exceeds a specific threshold value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011057872.3A CN112177063A (en) | 2020-09-30 | 2020-09-30 | Foundation pit construction monitoring device and foundation pit monitoring method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011057872.3A CN112177063A (en) | 2020-09-30 | 2020-09-30 | Foundation pit construction monitoring device and foundation pit monitoring method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112903006A (en) * | 2021-01-08 | 2021-06-04 | 常州天姆智能科技有限公司 | Be used for intelligent foundation ditch detecting system |
| CN113062372A (en) * | 2021-03-29 | 2021-07-02 | 广州地铁设计研究院股份有限公司 | Automatic deformation monitoring facilities of subway foundation pit |
| CN114370072A (en) * | 2021-12-24 | 2022-04-19 | 扬州市开元岩土工程检测有限公司 | A detection system that is convenient for measuring the deformation of foundation pits |
| CN114485456A (en) * | 2021-12-17 | 2022-05-13 | 卜庆斌 | Depth measuring device for foundation pit monitoring and measuring method thereof |
| CN115748478A (en) * | 2022-11-24 | 2023-03-07 | 中铁二局集团有限公司 | Bridge continuous beam hanging basket template positioner, hanging basket and using method thereof |
| CN117470312A (en) * | 2023-11-03 | 2024-01-30 | 国网安徽省电力有限公司濉溪县供电公司 | A power grid planning measurement device |
| CN120176538A (en) * | 2025-05-23 | 2025-06-20 | 中铁二局集团有限公司 | A tunnel foundation pit guide and measurement device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112903006A (en) * | 2021-01-08 | 2021-06-04 | 常州天姆智能科技有限公司 | Be used for intelligent foundation ditch detecting system |
| CN113062372A (en) * | 2021-03-29 | 2021-07-02 | 广州地铁设计研究院股份有限公司 | Automatic deformation monitoring facilities of subway foundation pit |
| CN114485456A (en) * | 2021-12-17 | 2022-05-13 | 卜庆斌 | Depth measuring device for foundation pit monitoring and measuring method thereof |
| CN114485456B (en) * | 2021-12-17 | 2024-03-15 | 永信和瑞工程咨询有限公司 | Depth measuring device for foundation pit monitoring and measuring method thereof |
| CN114370072A (en) * | 2021-12-24 | 2022-04-19 | 扬州市开元岩土工程检测有限公司 | A detection system that is convenient for measuring the deformation of foundation pits |
| CN115748478A (en) * | 2022-11-24 | 2023-03-07 | 中铁二局集团有限公司 | Bridge continuous beam hanging basket template positioner, hanging basket and using method thereof |
| CN115748478B (en) * | 2022-11-24 | 2024-01-23 | 中铁二局集团有限公司 | Bridge continuous beam hanging basket template positioner, hanging basket and using method thereof |
| CN117470312A (en) * | 2023-11-03 | 2024-01-30 | 国网安徽省电力有限公司濉溪县供电公司 | A power grid planning measurement device |
| CN117470312B (en) * | 2023-11-03 | 2024-06-11 | 国网安徽省电力有限公司濉溪县供电公司 | A measuring device for power grid planning |
| CN120176538A (en) * | 2025-05-23 | 2025-06-20 | 中铁二局集团有限公司 | A tunnel foundation pit guide and measurement device |
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Application publication date: 20210105 |