CN110158673B - Foundation pit deformation real-time monitoring system - Google Patents
Foundation pit deformation real-time monitoring system Download PDFInfo
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- CN110158673B CN110158673B CN201910502855.7A CN201910502855A CN110158673B CN 110158673 B CN110158673 B CN 110158673B CN 201910502855 A CN201910502855 A CN 201910502855A CN 110158673 B CN110158673 B CN 110158673B
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- foundation pit
- side wall
- sensor
- microprocessor
- deformation
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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
Abstract
The invention provides a real-time foundation pit deformation monitoring system which comprises a plurality of annular fixing frames fixed along the circumferential direction of the inner side wall of a foundation pit, wherein two adjacent annular fixing frames are connected through a plurality of vertical fixing rods; each annular mount is equipped with a plurality of foundation ditch deformation detecting element along its circumference is even, each foundation ditch deformation detecting element includes the sensor dead lever, be equipped with multiple spot displacement sensor and pressure sensor on the sensor dead lever respectively, the sensor dead lever is installed in the corresponding mounting hole that bores on the foundation ditch lateral wall, and the one end that is located the mounting hole entry of sensor dead lever is fixed in on the annular mount, multiple spot displacement sensor and pressure sensor respectively with microprocessor signal connection, microprocessor still with display screen and alarm signal connection. The invention can realize continuous real-time monitoring on the deformation of the side wall of the foundation pit, can accurately reflect the local and overall deformation conditions of the foundation pit, and can realize real-time monitoring and timely early warning on dangerous parts of the foundation pit.
Description
Technical Field
The invention relates to the field of constructional engineering, in particular to a foundation pit deformation real-time monitoring system.
Background
During construction, a foundation pit is usually excavated first, and deformation monitoring of the foundation pit is one of essential monitoring items in the construction process. The foundation pit monitoring technology has become an important guarantee means for building construction, how to effectively and rapidly monitor the safety of the foundation pit to become a difficult point and a key point for building construction, the current foundation pit deformation monitoring mostly adopts instruments such as a total station, a level gauge and an inclinometer, manual timing measurement and reading are needed, the labor intensity is increased, relatively continuous real-time monitoring on the deformation of the side wall of the foundation pit is difficult to realize, the local and integral deformation conditions of the foundation pit are difficult to be simultaneously and accurately reflected, and each dangerous part of the foundation pit cannot be monitored in real time, and a dangerous source can be timely found and early-warned in time.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provides a foundation pit deformation real-time monitoring system which can realize relatively continuous real-time monitoring on the deformation of the side wall of the foundation pit, can accurately reflect the local and overall deformation conditions of the foundation pit and can realize real-time monitoring and timely early warning on each dangerous part of the foundation pit.
The technical scheme of the invention is as follows: a foundation pit deformation real-time monitoring system comprises a plurality of annular fixing frames fixed along the circumferential direction of the inner side wall of a foundation pit, wherein the annular fixing frames are distributed along the depth direction of the foundation pit, and two adjacent annular fixing frames are connected through a plurality of vertical fixing rods; each annular fixing frame is uniformly provided with a plurality of foundation pit deformation detection units along the circumferential direction, each foundation pit deformation detection unit comprises a sensor fixing rod, a multipoint displacement sensor and a pressure sensor are respectively arranged on the sensor fixing rods, the sensor fixing rods are arranged in corresponding mounting holes drilled on the side wall of the foundation pit, one ends of the sensor fixing rods, which are positioned at the inlets of the mounting holes, are fixed on the corresponding annular fixing frames, the multipoint displacement sensors and the pressure sensors are respectively in signal connection with a microprocessor through signal lines, and the microprocessor is also in signal connection with a display screen and an alarm; the multipoint displacement sensor, the pressure sensor, the alarm and the microprocessor are electrically connected with the power supply module through leads; the multipoint displacement sensor is used for detecting the displacement value of the side wall of the foundation pit where the multipoint displacement sensor is located in real time and sending the displacement value to the microprocessor in real time; the pressure sensor is used for detecting a pressure value applied to the side wall of the foundation pit where the pressure sensor is located in real time and sending the pressure value to the microprocessor in real time; the microprocessor is used for receiving the displacement value and the pressure value in real time, comparing the received displacement value with a displacement set value in real time, comparing the received pressure value with a pressure set value in real time, controlling the alarm to give a first alarm when the displacement value exceeds the displacement set value, and controlling the alarm to give a second alarm when the pressure value exceeds the pressure set value; the display screen is used for displaying the position information of the foundation pit deformation detection unit with the alarm condition in the foundation pit.
The microprocessor is also in signal connection with a wireless communication module, and the wireless communication module is in signal connection with a construction monitoring system and a handheld wireless receiving end for construction supervision respectively; the microprocessor passes through wireless communication module sends the displacement value and the pressure value that each foundation ditch deformation detecting element detected in real time to construction monitored control system and construction are kept watch on with handheld wireless receiving terminal, simultaneously works as when displacement value or pressure value exceed corresponding set value the microprocessor passes through wireless communication module to construction monitored control system and construction are kept watch on with handheld wireless receiving terminal and send alarm information.
The annular fixing frame is provided with a plurality of connecting holes along the circumferential direction, and the annular fixing frame is fixed on the side wall of the foundation pit in a mode that the connecting nails penetrate into the connecting holes and are wedged into the side wall of the foundation pit; the annular fixing frame comprises a plurality of sections of connecting sections which are sequentially connected together through screws to form the annular fixing frame; the vertical fixed rods are also connected with the corresponding annular fixed frames through screws.
The connecting section is a strip-shaped steel plate or a threaded steel bar, and the lug handle with a threaded hole for screw thread connection is welded on the strip-shaped steel plate or the threaded steel bar.
And after filling slurry into a gap between the sensor fixing rod and the inner side wall of the mounting hole channel, sealing the inlet of the mounting hole channel by adopting cement.
The invention has the beneficial effects that: the embodiment of the invention provides a real-time foundation pit deformation monitoring system, wherein a stable net rack can be formed on the inner wall of a foundation pit in the circumferential direction through each annular fixing frame and each vertical fixing rod, and a fixed reference body can be well provided for the local side wall of the foundation pit by means of the net rack fixed on the integral side wall of the foundation pit, so that the deformation displacement of the local side wall of the foundation pit, namely the deformation pressure, the displacement and the like generated inside the foundation pit can be conveniently and automatically measured on the basis of the integral net rack and by matching with each foundation pit deformation detection unit distributed on the side wall of the foundation pit, and meanwhile, the deformation condition of the foundation pit can be timely obtained through a field alarm, wireless data transmission and alarm. Therefore, the invention can realize relatively continuous real-time monitoring on the deformation of the side wall of the foundation pit, can accurately reflect the local and overall deformation conditions of the foundation pit, and can realize real-time monitoring and timely early warning on each dangerous part of the foundation pit.
Drawings
FIG. 1 is a block diagram of the electrical system connections of the present invention;
FIG. 2 is a schematic view of a stable grid structure formed on the interior of a foundation pit by a plurality of annular fixing frames and a plurality of vertical fixing rods according to the present invention;
fig. 3 is a schematic view of the connection of the foundation pit deformation detection unit, the inner wall of the foundation pit and the annular fixing frame according to the invention.
Detailed Description
An embodiment of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the embodiment.
Referring to fig. 1-3, an embodiment of the present invention provides a real-time monitoring system for foundation pit deformation, referring to fig. 2, including a plurality of annular fixing frames 1 fixed along a circumferential direction of an inner side wall of a foundation pit 8, where the plurality of annular fixing frames 1 are arranged along a depth direction of the foundation pit 8, and two adjacent annular fixing frames 1 are connected by a plurality of vertical fixing rods 7; each annular fixing frame 1 is uniformly provided with a plurality of foundation pit deformation detection units along the circumferential direction, referring to fig. 3, each foundation pit deformation detection unit comprises a sensor fixing rod 2, the sensor fixing rod 2 is respectively provided with a multipoint displacement sensor 4 and a pressure sensor 3, the sensor fixing rod 2 is arranged in a corresponding mounting hole 6 drilled on the side wall 8-1 of the foundation pit, one end of the sensor fixing rod 2 positioned at the inlet of the mounting hole 6 is fixed on the corresponding annular fixing frame 1, referring to fig. 1, the multipoint displacement sensor 4 and the pressure sensor 3 are respectively in signal connection with a microprocessor 10 through signal lines, and the microprocessor 10 is also in signal connection with a display screen and an alarm 11; the multipoint displacement sensor 4, the pressure sensor 3, the alarm 11 and the microprocessor 10 are electrically connected with the power module 9 through leads; the multipoint displacement sensor 4 is used for detecting the displacement value of the side wall 8-1 of the foundation pit where the multipoint displacement sensor is located in real time and sending the displacement value to the microprocessor 10 in real time; the pressure sensor 3 is used for detecting a pressure value applied to the side wall 8-1 of the foundation pit where the pressure sensor is located in real time and sending the pressure value to the microprocessor 10 in real time; the microprocessor 10 is configured to receive the displacement value and the pressure value in real time, compare the received displacement value with a displacement setting value in real time, compare the received pressure value with a pressure setting value in real time, control the alarm 11 to send a first alarm sound when the displacement value exceeds the displacement setting value, and control the alarm 11 to send a second alarm sound when the pressure value exceeds the pressure setting value; the display screen is used for displaying the position information of the foundation pit deformation detection unit with the alarm condition in the foundation pit 8. Through each annular mount and vertical dead lever of this embodiment can form a stable rack in the inner wall circumference of foundation ditch, rely on this rack of being fixed in on the whole lateral wall of foundation ditch to provide a fixed reference body well to the local lateral wall of foundation ditch, therefore based on this whole rack and cooperate each foundation ditch deformation detecting element that distributes on the lateral wall of foundation ditch to measure the deformation displacement of the local lateral wall of foundation ditch that can be convenient automatic promptly inside produced deformation pressure, displacement etc., simultaneously can be timely through on-the-spot alarm learn the foundation ditch deformation situation, this embodiment can realize relatively continuous real-time supervision to the deformation of foundation ditch lateral wall, can accurately reflect the local and whole deformation situation of foundation ditch simultaneously, can accomplish real-time supervision to each dangerous position of foundation ditch, timely early warning.
Further, referring to fig. 1, the microprocessor 10 is further connected with a wireless communication module 13 through signals, and the wireless communication module 13 is respectively connected with a construction monitoring system 14 and a handheld wireless receiving end 12 for construction supervision through signals; the microprocessor 10 passes through wireless communication module 13 sends the displacement value and the pressure value that each foundation ditch deformation detection unit detected in real time to construction monitored control system 14 and construction are managed with handheld wireless receiving terminal 12, works as simultaneously when displacement value or pressure value exceed corresponding set value microprocessor 10 passes through wireless communication module 13 to construction monitored control system 14 and construction are managed with handheld wireless receiving terminal 12 and are sent alarm information. The microprocessor is a single chip microcomputer or a PLC controller, the handheld wireless receiving end is a tablet personal computer or a mobile phone, and the wireless communication module is a 3G or 4G wireless communication module. The embodiment transmits the local deformation condition of the foundation pit to the construction monitoring system and the handheld wireless receiving end for construction supervision in real time in a wireless information sending mode, and can give a remote alarm prompt in time when the monitoring value reaches the set alarm value, so that the abnormal deformation condition of the foundation pit can be found in time.
Furthermore, the annular fixing frame 1 is provided with a plurality of connecting holes along the circumferential direction, and the annular fixing frame 1 is fixed on the side wall 8-1 of the foundation pit in a mode that the connecting nails 5 penetrate into the connecting holes and are wedged into the side wall 8-1 of the foundation pit; the annular fixing frame 1 comprises a plurality of sections of connecting sections which are sequentially connected together through screws to form the annular fixing frame 1; the vertical fixing rod 7 is also connected with the corresponding annular fixing frame 1 through a screw.
Furthermore, the connecting section is a strip-shaped steel plate or a threaded steel bar, and lugs with threaded holes for screw thread connection are welded on the strip-shaped steel plate or the threaded steel bar.
Further, slurry is injected into a gap between the sensor fixing rod 2 and the inner side wall of the mounting hole 6 for filling, and cement is used for sealing the inlet of the mounting hole 6.
In summary, a stable net rack can be formed on the inner wall of the foundation pit in the circumferential direction through the annular fixing frames and the vertical fixing rods, and a fixed reference body can be provided for the local side wall of the foundation pit well by means of the net rack fixed on the integral side wall of the foundation pit, so that deformation displacement of the local side wall of the foundation pit, namely deformation pressure, displacement and the like generated inside the foundation pit can be conveniently and automatically measured based on the integral net rack and matched with the foundation pit deformation detection units distributed on the side wall of the foundation pit, and meanwhile, the deformation condition of the foundation pit can be timely known through a field alarm, wireless data transmission and alarm. Therefore, the invention can realize relatively continuous real-time monitoring on the deformation of the side wall of the foundation pit, can accurately reflect the local and overall deformation conditions of the foundation pit, and can realize real-time monitoring and timely early warning on each dangerous part of the foundation pit.
The above disclosure is only for a few specific embodiments of the present invention, however, the present invention is not limited to the above embodiments, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.
Claims (3)
1. The foundation pit deformation real-time monitoring system is characterized by comprising a plurality of annular fixing frames (1) fixed along the circumferential direction of the inner side wall of a foundation pit (8), wherein the plurality of annular fixing frames (1) are distributed along the depth direction of the foundation pit (8), and two adjacent annular fixing frames (1) are connected through a plurality of vertical fixing rods (7); the annular fixing frame (1) is provided with a plurality of connecting holes along the circumferential direction, and the annular fixing frame (1) is fixed on the side wall (8-1) of the foundation pit in a mode that a connecting nail (5) penetrates into the connecting holes and is wedged into the side wall (8-1) of the foundation pit; the annular fixing frame (1) comprises a plurality of sections of connecting sections which are sequentially connected together through screws to form the annular fixing frame (1); the vertical fixing rod (7) is also connected with the corresponding annular fixing frame (1) through a screw; each annular fixing frame (1) is uniformly provided with a plurality of foundation pit deformation detection units along the circumferential direction, each foundation pit deformation detection unit comprises a sensor fixing rod (2), the sensor fixing rods (2) are respectively provided with a multipoint displacement sensor (4) and a pressure sensor (3), the sensor fixing rods (2) are arranged in corresponding mounting holes (6) drilled in the side wall (8-1) of the foundation pit, one ends of the sensor fixing rods (2) positioned at the inlets of the mounting holes (6) are fixed on the corresponding annular fixing frames (1), the multipoint displacement sensors (4) and the pressure sensors (3) are respectively in signal connection with a microprocessor (10) through signal lines, and the microprocessor (10) is further in signal connection with a display screen and an alarm (11); the multipoint displacement sensor (4), the pressure sensor (3), the alarm (11) and the microprocessor (10) are electrically connected with the power module (9) through leads; the multipoint displacement sensor (4) is used for detecting the displacement value of the side wall (8-1) of the foundation pit where the multipoint displacement sensor is located in real time and sending the displacement value to the microprocessor (10) in real time; the pressure sensor (3) is used for detecting a pressure value applied to the side wall (8-1) of the foundation pit where the pressure sensor is located in real time and sending the pressure value to the microprocessor (10) in real time; the microprocessor (10) is used for receiving the displacement value and the pressure value in real time, comparing the received displacement value with a displacement set value in real time, comparing the received pressure value with a pressure set value in real time, controlling the alarm (11) to give a first alarm by the microprocessor (10) when the displacement value exceeds the displacement set value, and controlling the alarm (11) to give a second alarm by the microprocessor (10) when the pressure value exceeds the pressure set value; the display screen is used for displaying the position information of the foundation pit deformation detection unit with the alarm condition in the foundation pit (8); the annular fixing frames and the vertical fixing rods of the real-time foundation pit deformation monitoring system can form a stable net rack on the circumferential direction of the inner wall of the foundation pit, the net rack fixed on the integral side wall of the foundation pit can provide a fixed reference body for the local side wall of the foundation pit well, and deformation displacement of the local side wall of the foundation pit and deformation pressure and displacement generated inside the local side wall of the foundation pit can be conveniently and automatically measured based on the integral net rack and matched with the foundation pit deformation detection units distributed on the side wall of the foundation pit; the microprocessor (10) is further in signal connection with a wireless communication module (13), and the wireless communication module (13) is in signal connection with a construction monitoring system (14) and a handheld wireless receiving end (12) for construction supervision respectively; microprocessor (10) pass through wireless communication module (13) send the displacement value and the pressure value that each foundation ditch deformation detecting element detected in real time to construction monitored control system (14) and construction are kept watch on with handheld wireless receiving terminal (12), work as simultaneously when displacement value or pressure value exceed corresponding set value microprocessor (10) pass through wireless communication module (13) to construction monitored control system (14) and construction are kept watch on with handheld wireless receiving terminal (12) and send alarm information.
2. The real-time foundation pit deformation monitoring system according to claim 1, wherein the connecting section is a strip-shaped steel plate or a threaded steel bar, and an ear handle with a threaded hole for screw thread connection is welded on the strip-shaped steel plate or the threaded steel bar.
3. The real-time foundation pit deformation monitoring system as claimed in claim 1, wherein the gap between the sensor fixing rod (2) and the inner side wall of the mounting hole (6) is filled with slurry and the inlet of the mounting hole (6) is sealed by cement.
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| CN201910502855.7A CN110158673B (en) | 2019-06-11 | 2019-06-11 | Foundation pit deformation real-time monitoring system |
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| CN201910502855.7A CN110158673B (en) | 2019-06-11 | 2019-06-11 | Foundation pit deformation real-time monitoring system |
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| CN110158673B true CN110158673B (en) | 2021-07-23 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110685305B (en) * | 2019-10-22 | 2021-04-06 | 苏州常宏建筑设计研究院有限公司 | Online safety monitoring system for foundation pit |
| CN111877412A (en) * | 2020-05-26 | 2020-11-03 | 中建八局天津建设工程有限公司 | Deformation monitoring method for deep foundation pit under support system in soft soil area |
| CN112681408B (en) * | 2020-12-21 | 2022-04-22 | 深圳市科振建设工程检测有限公司 | Bridge foundation pit deviation detection device |
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| CN113235611B (en) * | 2021-05-14 | 2022-06-21 | 梁斐 | Construction method of pit foundation supporting structure in civil engineering construction process |
| CN113186997A (en) * | 2021-05-20 | 2021-07-30 | 马盼 | Multi-point position measuring device for foundation pit settlement detection |
| CN114182766B (en) * | 2021-08-11 | 2023-11-07 | 国网江苏省电力有限公司 | BIM-based foundation pit monitoring system |
| CN115262666B (en) * | 2022-08-29 | 2023-08-18 | 广东粤能工程管理有限公司 | Foundation pit engineering monitor for high-rise building |
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