A construction engineering foundation pit deformation monitoring device

Abstract

The application belongs to the technical field of foundation pit monitoring, and aims to provide a building engineering foundation pit deformation monitoring device for monitoring and predicting the deformation of the easily deformed and collapsed area on the side wall of the foundation pit. The device comprises a docking installation mechanism, a baffle connecting mechanism, a laser monitoring structure and a monitoring mechanism. Multiple docking installation mechanisms are vertically inserted into the side wall of the foundation pit and horizontally arranged. The docking installation mechanisms located on the outer sides are arranged at the safe areas on both sides of the easily deformed and collapsed area, and the baffle connecting mechanisms are connected thereto. The remaining docking installation mechanisms are arranged at the easily deformed and collapsed area, and the laser monitoring structures are connected thereto. The monitoring mechanism spans all the baffle connecting mechanisms and the laser monitoring structures, and the two ends of the monitoring mechanism are connected to the corresponding baffle connecting mechanisms. The laser monitoring structures face the monitoring mechanism. The laser monitoring structures measure at a fixed interval, and the multiple sets of measurement results are compared to monitor and predict the deformation of the foundation pit.

Description

Technical Field

[0001] This invention relates to a deformation monitoring device for foundation pits in building construction, belonging to the field of foundation pit monitoring technology. Background Technology

[0002] An excavation pit is an underground space excavated during the construction of a building (including structures) for the construction of its foundation and basement. The pit walls can be classified as vertical, sloping, stepped, or variable slope. Supports are provided on the pit walls to ensure the stability of the pit.

[0003] The typical form of foundation pit support involves drilling holes in the soil, inserting anchor bolts, and spraying concrete to form a composite support structure, which actively enhances slope stability. However, some areas have high water content, which can affect the stability of the soil in these areas after support is completed. They are prone to deformation even after support is completed, and in cases of severe deformation, collapse is highly likely. Monitoring of these areas in the foundation pit needs to be more stringent to ensure the safety of the foundation pit. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a deformation monitoring device for foundation pits in construction projects, which monitors and predicts the deformation of easily deformable and collapsible areas on the sidewalls of foundation pits.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a deformation monitoring device for foundation pits in building engineering, comprising a docking installation mechanism, a baffle connection mechanism, a laser monitoring structure, and a monitoring mechanism. Multiple docking installation mechanisms are vertically inserted into the sidewall of the foundation pit and arranged horizontally. The docking installation mechanisms located on the outer sides are set in the safety areas on both sides of the easily deformable and collapseable area, and are connected to the baffle connection mechanism. The remaining docking installation mechanisms are set in the easily deformable and collapseable area, and are connected to the laser monitoring structure. The monitoring mechanism spans all the baffle connection mechanisms, and both ends of the monitoring mechanism are connected to the corresponding baffle connection mechanisms. The monitoring mechanism includes a monitoring plate, which is a long strip plate, and the laser monitoring structure faces the monitoring plate.

[0006] The laser monitoring structure includes a sleeve and a mounting base disposed at the bottom of the sleeve. A second insert rod is fixedly fitted inside the mounting base, and the lower end of the second insert rod extends out of the mounting base.

[0007] A motor compartment is provided on the outer side of the sleeve, and a servo motor is installed inside the motor compartment. The output end of the servo motor extends into the sleeve and is connected to a half gear.

[0008] The top of the sleeve is fitted with a microprocessor and energy storage module, which is formed by the combination of a microprocessor module and a battery module. A charging port is installed on the side wall of the sleeve near the battery module.

[0009] A laser ranging sensor is installed on the top of the microprocessor and energy storage module, and a start button for the laser ranging sensor is installed on the bottom of the microprocessor and energy storage module.

[0010] An axial limiting groove is provided on the inner wall of the middle part of the sleeve. A drive frame is slidably arranged in the limiting groove. A rack that meshes with the half gear is provided on the drive frame. A top plate is installed at the end of the drive frame close to the start button.

[0011] Preferably, a pulley is provided on the surface of the drive frame that contacts the limiting groove, and an anti-slip pad is installed on the outer wall of the mounting base.

[0012] Preferably, the microprocessor and energy storage module is electrically connected to the servo motor via a power supply line, and the microprocessor and energy storage module is electrically connected to the laser rangefinder.

[0013] The servo motor starts intermittently at set intervals.

[0014] Preferably, the docking installation mechanism includes a mounting base inserted into the side wall of the pit, the bottom of the mounting base being a base end with a pointed tip, and the top being connected to a threaded docking rod;

[0015] The mounting base is a hollow column with multiple radially extending top rods slidably arranged through the side wall. A stop rod end is installed on one end of the extending top rod inside the mounting base, and a baffle is provided between the stop rod end and the extending top rod.

[0016] The laser monitoring structure is threadedly connected to the threaded docking rod in the corresponding docking installation mechanism via the mounting base. The second insert rod is inserted into the mounting base, and the extension top rod is pushed out of the mounting base and embedded in the side wall of the pit.

[0017] Preferably, the baffle connecting mechanism includes a mounting rod and a mounting sleeve fixed to the bottom end of the mounting rod. The mounting rod has threaded sections distributed on it. A first insert rod is fixedly fitted inside the mounting sleeve, and the lower end of the first insert rod extends out of the mounting sleeve.

[0018] The mounting sleeve is threadedly connected to the threaded rod in the corresponding docking installation mechanism. The first insert rod is inserted into the mounting base, and the extension top rod is pushed out of the mounting base and embedded in the side wall of the pit.

[0019] Preferably, the monitoring mechanism includes a monitoring plate, a slide rail, and sliders. The monitoring plate is a long strip, and a slide rail is provided on the side of the monitoring plate. Multiple sliders are slidably disposed in the slide rail.

[0020] The mounting rod passes vertically through the corresponding slider and is threadedly connected to the slider via a threaded section. The monitoring plate is supported directly opposite the laser monitoring structure, serving as the ranging reference surface for the laser ranging sensor.

[0021] Preferably, the top surface of the mounting rod is provided with a threaded groove, and a connecting screw is threadedly connected to the connecting screw through the threaded groove. A connecting seat is fixed on the connecting screw, and a hand handle is fixed on the connecting seat.

[0022] Preferably, the monitoring plate consists of multiple pieces, spliced ​​together end to end. One end of the monitoring plate is provided with a locking block, and the other end is provided with a buckle block. The locking block is provided with a protrusion, and the buckle block is provided with a locking groove. The locking block and the buckle block are connected by engaging the protrusion and the locking groove.

[0023] Preferably, it also includes a monitoring and alarm mechanism, which includes a pole and a monitoring probe. The pole is fixedly installed on the foundation pit, and the monitoring probe is installed at the top of the pole, with the monitoring probe facing the easily deformable and collapseable area.

[0024] Preferably, a display screen is also installed on the pole, and an information receiving module, an audio-visual warning module, and an information processing module are provided on the back of the display screen;

[0025] The monitoring probe is electrically connected to the information processing module, the information receiving module is electrically connected to the microprocessor and energy storage module and the information processing module, and the audible and visual alarm module is electrically connected to the information processing module.

[0026] Compared with the prior art, the present invention has the following beneficial effects.

[0027] 1. The present invention installs a docking installation mechanism on the easily deformable and collapsible area on the side wall of the foundation pit and the safe area on both sides, and then installs a laser monitoring structure and a baffle connection mechanism. The monitoring plate, which serves as the monitoring reference surface, is installed on the baffle connection mechanism. The laser monitoring structure faces the monitoring plate to monitor the easily deformable and collapsible area. Multiple sets of measurement results are compiled into a comparison table to monitor and predict the deformation of the easily deformable and collapsible area of ​​the foundation pit.

[0028] 2. In this invention, the intermittent operation of the servo motor drives the half gear to mesh with the rack. When the rack is pushed up, the drive frame is also pushed. The top plate installed on the drive frame contacts the start button, turning on the laser rangefinder sensor and realizing the intermittent timed monitoring of the laser rangefinder sensor.

[0029] 3. In this invention, by setting an extension rod inside the mounting base, the second or first insert rod can be pushed into the mounting base during the installation of the laser monitoring structure or the baffle connection mechanism. The extension rod is pushed out by pressing the end of the baffle rod. When the extension rod is pushed out, it is squeezed into the soil of the foundation pit, thereby reinforcing the installation of the mounting base.

[0030] 4. In this invention, the mounting rod in the baffle connecting mechanism is set inside the slider of the monitoring mechanism, so that the baffle connecting mechanism and the monitoring mechanism can be installed according to the specific terrain of the foundation pit; in addition, the length of the monitoring plate, which serves as the monitoring reference surface, can be adjusted more flexibly by the engagement and connection of the fastener and the locking block, and the number of monitoring plates installed can be adjusted according to the size of the easily deformable and collapseable area.

[0031] 5. In this invention, a monitoring probe is used to monitor the easily deformable and collapsible area in real time. The information receiving module receives and processes the ranging results of the laser ranging sensor, and statistically records the measurement data of multiple laser ranging sensors. Multiple measurements are used to form a comparison table, and the information is transmitted back together to monitor the foundation information and deformation of the foundation pit in real time. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the embodiments will be briefly introduced below.

[0033] Figure 1 This is a schematic diagram of the overall installation state of the present invention.

[0034] Figure 2 This is a schematic diagram of the installation of the monitoring mechanism and the laser monitoring structure in this invention.

[0035] Figure 3 This is a schematic diagram showing the positional relationship between the monitoring mechanism and the laser monitoring structure in this invention.

[0036] Figure 4 This is a schematic diagram of the laser monitoring structure in this invention.

[0037] Figure 5 This is a schematic diagram of the installation of the servo motor in this invention.

[0038] Figure 6 This is a schematic diagram of the installation of the laser ranging sensor in this invention.

[0039] Figure 7 This is a schematic diagram of the drive frame in this invention.

[0040] Figure 8 This is a schematic diagram of the installation of the charging port in this invention.

[0041] Figure 9 This is a schematic diagram of the docking and installation mechanism in this invention.

[0042] Figure 10 This is a schematic diagram of the internal structure of the docking and installation mechanism in this invention.

[0043] Figure 11 This is a schematic diagram showing the connection between the laser monitoring structure and the docking installation mechanism in this invention. Figure 1 .

[0044] Figure 12 This is a schematic diagram showing the connection between the laser monitoring structure and the docking installation mechanism in this invention. Figure 2 .

[0045] Figure 13 This is a cross-sectional view showing the connection between the laser monitoring structure and the docking installation mechanism in this invention.

[0046] Figure 14 This is a schematic diagram of the baffle connection mechanism in this invention.

[0047] Figure 15 This is a schematic diagram showing the connection between the baffle connection mechanism and the docking installation mechanism in this invention.

[0048] Figure 16 This is a schematic diagram of the monitoring mechanism in this invention.

[0049] Figure 17 This is a schematic diagram showing the connection between the monitoring mechanism and the baffle connection mechanism in this invention.

[0050] Figure 18 This is a schematic diagram of the monitoring and alarm mechanism in the present invention. Figure 1 .

[0051] Figure 19 This is a schematic diagram of the monitoring and alarm mechanism in this invention. Figure 2 .

[0052] Figure 20 This is a schematic diagram of the operation process of the present invention.

[0053] In the diagram: 1. Monitoring mechanism; 101. Monitoring plate; 102. Slide rail; 103. Slider; 104. Locking block; 105. Protrusion; 106. Buckle; 107. Slot;

[0054] 2. Baffle connecting mechanism; 201. Mounting rod; 202. Threaded section; 203. Threaded groove; 204. Mounting sleeve; 205. First insertion rod; 206. Connecting seat; 207. Connecting screw; 208. Hand handle;

[0055] 3. Laser monitoring structure; 301. Sleeve; 302. Mounting base; 303. Anti-slip pad; 304. Second insertion rod; 305. Motor compartment; 306. Servo motor; 307. Power supply cable; 308. Microprocessor and energy storage module; 309. Start button; 310. Laser rangefinder sensor; 311. Half gear; 312. Drive frame; 313. Rack; 314. Pulley; 315. Top plate; 316. Charging port; 317. Limiting groove;

[0056] 4. Connecting installation mechanism; 401. Mounting base; 402. Threaded connecting rod; 403. Base end; 404. Extending top rod; 405. Retaining ring; 406. Stop rod end;

[0057] 5. Monitoring and alarm mechanism; 501. Pole; 502. Monitoring probe; 503. Display screen; 504. Information receiving module; 505. Audible and visual warning module; 506. Information processing module. Detailed Implementation

[0058] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0059] The present invention provides the following embodiments.

[0060] like Figure 1 , Figure 2 , Figure 3 As shown, the present invention discloses a foundation pit deformation monitoring device for building engineering, comprising a docking installation mechanism 4, a baffle connection mechanism 2, a laser monitoring structure 3, and a monitoring mechanism 1. Multiple docking installation mechanisms 4 are vertically inserted into the side wall of the foundation pit and arranged horizontally. The docking installation mechanisms 4 located on the outer sides are set in the safety area on both sides of the easily deformable and collapseable area, and are connected to the baffle connection mechanism 2. The remaining docking installation mechanisms 4 are set in the easily deformable and collapseable area, and are connected to the laser monitoring structure 3. The monitoring mechanism 1 spans all the baffle connection mechanisms 2, and both ends of the monitoring mechanism 1 are connected to the corresponding baffle connection mechanism 2. The monitoring mechanism 1 includes a monitoring plate 101, which is a long strip plate. The laser monitoring structure 3 is directly opposite the monitoring plate 101.

[0061] like Figure 4 As shown, the laser monitoring structure 3 includes a sleeve 301 and a mounting base 302 disposed at the bottom of the sleeve 301. A second insert rod 304 is fixedly fitted inside the mounting base 302 and the lower end of the second insert rod 304 extends out of the mounting base 302.

[0062] like Figure 5 As shown, a motor compartment 305 is provided on the outer side of the sleeve 301, and a servo motor 306 is installed in the motor compartment 305. The output end of the servo motor 306 extends into the sleeve 301 and is connected to a half gear 311.

[0063] like Figure 4As shown, a microprocessor and energy storage module 308 is fixedly fitted inside the top of the sleeve 301. The microprocessor and energy storage module 308 is formed by combining a microprocessor module and a battery module. A charging port 316 is installed on the side wall of the sleeve 301 near the battery module.

[0064] like Figure 6 As shown, a laser rangefinder 310 is mounted on the top of the microprocessor and energy storage module 308, and a start button 309 for the laser rangefinder 310 is mounted on the bottom of the microprocessor and energy storage module 308.

[0065] like Figure 4 , Figure 7 As shown, an axial limiting groove 317 is formed on the inner wall of the middle part of the sleeve 301. A drive frame 312 is slidably arranged in the limiting groove 317. A rack 313 that meshes with the half gear 311 is provided on the drive frame 312. A top plate 315 is installed at the end of the drive frame 312 close to the start button 309. The limiting groove 317 can be two symmetrical grooves. The drive frame 312 is portal-shaped. The rack 313 is arranged on one side of the drive frame 312. In addition, a counterweight structure can be provided at the bottom of the drive frame 312, so that the sliding of the drive frame 312 can be more stable. The top plate 315 can be elastic.

[0066] like Figure 7 As shown, a pulley 314 is provided on the surface of the drive frame 312 that contacts the limiting groove 317, and an anti-slip pad 303 is installed on the outer wall of the mounting base 302. The anti-slip pad 303 facilitates the rotation operation of the mounting base 302.

[0067] like Figure 8 As shown, the microprocessor and power storage module 308 is electrically connected to the servo motor 306 via the power supply line 307, and the microprocessor and power storage module 308 is electrically connected to the laser range sensor 310.

[0068] The servo motor 306 is started intermittently at regular intervals.

[0069] In this invention, the battery module in the microprocessor and energy storage module 308 provides power for the operation of the servo motor 306, ensuring that the servo motor 306 can operate intermittently. During the intermittent operation of the servo motor 306, the laser range sensor 310 on the laser monitoring structure 3 can be started intermittently.

[0070] The toothless side of the half gear 311 faces the rack. When the servo motor 306 starts, it drives the half gear 311 to rotate one revolution. When the toothed side of the half gear 311 meshes with the rack 313, the rack 313 moves upward. Then the half gear 311 disengages from the rack 313, and the drive frame 312 loses its driving force.

[0071] The rack 313 and the drive frame 312 are integrally welded and fixed. The drive frame 312 is slidably set in the limiting groove 317. The rack 313 drives the integrated drive frame 312 to slide in the limiting groove 317. The limiting groove 317 can limit the sliding drive frame 312, ensuring that the drive frame 312 advances along the limiting groove 317. When the drive frame 312 moves upward, the top plate 315 set on it will directly contact and press the start button 309, turning on the laser range sensor 310 to measure the distance between it and the monitoring mechanism 1.

[0072] When the sidewall of the foundation pit is sloping, the laser monitoring structure 3, when perpendicular to the sidewall, is not horizontal but inclined. Thus, when the half-gear 311 disengages from the rack 313, the drive frame 312 slides down and resets under its own weight and the action of the bottom counterweight. The top plate 315 moves away from the start button 309, and the laser rangefinder 310 stops measuring distance. In this way, the intermittent rotation of the servo motor 306 achieves intermittent, timed monitoring by the laser rangefinder 310. The pulley 314 ensures smooth upward or downward movement of the drive frame 312.

[0073] When the pit sidewall is a vertical pit wall, the laser monitoring structure 3 itself is in a horizontal state. At this time, the drive frame 312 cannot be reset by gravity. The servo motor 306 can be set to rotate one revolution forward and one revolution backward each time. In this way, the drive frame 312 can be driven to move up and down to reset.

[0074] like Figure 9 , Figure 10 As shown, the docking installation mechanism 4 includes a mounting base 401 inserted into the side wall of the pit. The bottom of the mounting base 401 is a base end 403 with a pointed tip, and the top is connected to a threaded docking rod 402.

[0075] The mounting base 401 is a hollow column with multiple radially extending top rods 404 slidably disposed through its side wall. A stop end 406 is installed on one end of the extending top rod 404 inside the mounting base 401, and a baffle 405 is provided between the stop end 406 and the extending top rod 404. The extending top rod 404 extends out of the mounting base 401 and can be inserted into the soil to make the mounting base 401 more stable. The baffle 405 is used to prevent the extending top rod 404 from detaching from the mounting base 401.

[0076] like Figure 11 , Figure 12 , Figure 13As shown, the laser monitoring structure 3 is threadedly connected to the threaded docking rod 402 in the corresponding docking installation mechanism 4 via the mounting base 302. The second insert rod 304 is inserted into the mounting base 401, and the extension push rod 404 is pushed out of the mounting base 401 and embedded in the side wall of the pit. In this way, the laser monitoring structure 3 is stably installed on the side wall of the pit and can also be displaced with the deformation of the easily deformable area.

[0077] like Figure 14 , Figure 15 As shown, the baffle connecting mechanism 2 includes a mounting rod 201 and a mounting sleeve 204 fixed to the bottom end of the mounting rod 201. The mounting rod 201 has threaded sections 202 distributed on it. A first insert rod 205 is fixedly fitted inside the mounting sleeve 204, and the lower end of the first insert rod 205 extends out of the mounting sleeve 204.

[0078] The mounting sleeve 204 is threadedly connected to the threaded connecting rod 402 in the corresponding docking mounting mechanism 4. The first insert rod 205 is inserted into the mounting base 401, and the extension push rod 404 is pushed out of the mounting base 401 and embedded in the side wall of the pit. In this way, the baffle connecting mechanism 2 is firmly installed on the side wall of the pit. Since it is installed in a safe area, the baffle connecting mechanism 2 will not be displaced, and the monitoring mechanism 1 installed on it will also not be displaced.

[0079] like Figure 16 , Figure 17 As shown, the monitoring mechanism 1 includes a monitoring plate 101, a slide rail 102 and a slider 103. The monitoring plate 101 is a long strip plate, and the slide rail 102 is provided on the side of the monitoring plate 101. Multiple sliders 103 are slidably disposed in the slide rail 102.

[0080] The mounting rod 201 passes vertically through the corresponding slider 103 and is threadedly connected to the slider 103 via the threaded section 202. The monitoring plate 101 is supported on the opposite side of the laser monitoring structure 3, serving as the ranging reference surface of the laser ranging sensor 310.

[0081] like Figure 14 As shown, a threaded groove 203 is provided on the top surface of the mounting rod 201, and a connecting screw 207 is threadedly connected through the threaded groove 203. A connecting seat 206 is fixed on the connecting screw 207, and a hand handle 208 is fixed on the connecting seat 206.

[0082] The mounting rod 201 is connected to the slider 103 via a threaded section 202. During installation, the mounting rod 201 is screwed into the slider 103; during disassembly, the mounting rod 201 is screwed out of the slider 103. A handle 208, connected to the top of the mounting rod 201, is threaded into the threaded groove 203 via a connecting screw 207. The handle 208 can be removed when assembling or disassembling the mounting rod 201 and slider 103, without affecting the flexible installation of the baffle connecting mechanism 2 and the monitoring mechanism 1. Furthermore, the slider 103 can slide and adjust its position within the slide rail 102, making the installation of the monitoring plate 101 more flexible. The position of the baffle connecting mechanism 2 can be adjusted according to the set installation point (where the docking installation mechanism 4 is inserted), ensuring that the baffle connecting mechanism 2 can be accurately inserted into the corresponding docking installation mechanism 4.

[0083] The baffle connection mechanism 2 fixes the monitoring plate 101, which serves as the monitoring reference surface, and fixes both ends of the monitoring plate 101 in the safe areas on both sides of the easily deformable and collapseable area. The laser monitoring structure 3 is set in the easily deformable and collapseable area to monitor the easily deformable and collapseable area in real time. After multiple sets of laser monitoring structures 3 are installed and measured, a comparison table is formed to monitor and predict the deformation of the foundation pit in real time.

[0084] like Figure 16 As shown, the monitoring plate 101 consists of multiple pieces, spliced ​​end to end. One end of each monitoring plate 101 has a locking block 104, and the other end has a fastening block 106. The locking block 104 has a protrusion 105, and the fastening block 106 has a slot 107. The locking block 104 and the fastening block 106 are connected by the protrusion 105 and the slot 107. All monitoring plates 101 can be equipped with slide rails 102 and sliders 103, which improves component uniformity and facilitates assembly. Alternatively, slide rails 102 and sliders 103 can be provided only on the two outermost monitoring plates 101 on both sides, supported by the baffle connecting mechanism 2. The monitoring plate 101 in the middle serves as a reference surface for cooperation with the laser monitoring structure 3, and therefore does not require slide rails 102 and sliders 103.

[0085] The locking block 104 can be a V-shaped structure with an open front and a closed rear, which can improve the stability of its docking with the buckle block 106, and at the same time make it easy to separate the locking slot 107 from the protrusion 105 by pinching the locking block 104. Multiple monitoring plates 101 are connected to each other through the locking blocks 104 and buckle blocks 106 at both ends, and the length of the monitoring plates 101 can be adjusted to adapt to different sizes of easily deformable and collapsible areas.

[0086] like Figure 18 , Figure 19 , Figure 20As shown, the present invention also includes a monitoring and alarm mechanism 5, which comprises a pole 501 and a monitoring probe 502. The pole 501 is fixedly installed on the foundation pit, and the monitoring probe 502 is installed at the top of the pole 501, facing the easily deformable and collapsible area. The monitoring probe 502 monitors the easily deformable and collapsible area in real time, and the monitoring screen can be viewed in the monitoring room, enabling immediate monitoring of the easily deformable and collapsible area when managing the construction site.

[0087] The pole 501 is also equipped with a display screen 503, and the back of the display screen 503 is provided with an information receiving module 504, an audio-visual warning module 505 and an information processing module 506.

[0088] The monitoring probe 502 is electrically connected to the information processing module 506, the information receiving module 504 is electrically connected to the microprocessor and power storage module 308 and the information processing module 506, and the audible and visual warning module 505 is electrically connected to the information processing module 506.

[0089] After the laser rangefinder 310 measures the distance between itself and the monitoring plate 101, the microprocessor and power storage module 308 transmits the data to the information processing module 506 via the information receiving module 504. The information processing module 506 statistically records the data, compares multiple measurements, and monitors the deformation. When the deformation reflected by the data exceeds the alarm point, a signal is transmitted to the audible and visual alarm module 505, which activates the audible and visual alarm. The monitoring probe 502 also issues an alarm on the monitored screen and displays the warning information on the display screen 503. After receiving the warning, construction personnel in the easily deformable and collapse-prone area of ​​the foundation pit evacuate, and relevant personnel reinforce the easily deformable and collapse-prone area.

[0090] The working principle of this invention is as follows.

[0091] In some areas of the foundation pit, the moisture content is high and the soil is too loose. Although anchor rods are inserted into the soil and shotcrete is sprayed to form a composite support structure, the safety of this section cannot be fully guaranteed. Therefore, docking installation mechanism 4 is installed in this easily deformable and collapseable area and the safety areas on both sides to accommodate the installation of laser monitoring structure 3 and baffle connection mechanism 2.

[0092] Installing holes of corresponding diameter are made at the locations corresponding to the easily deformable and collapsible areas. At the same time, installing holes of corresponding diameter are also made in the safety areas on both sides of the easily deformable and collapsible areas. The docking installation mechanism 4 is installed in the corresponding installation holes for subsequent installation.

[0093] Install the laser monitoring structure 3 on the docking installation mechanism 4 in the easily deformable and collapseable area: Take out the laser monitoring structure 3, insert the second insertion rod 304 into the installation base 401, the second insertion rod 304 presses against the end of the stop rod 406 when inserted, push the extension rod 404 outward and insert it into the soil, at the same time hold the anti-slip pad 303 and rotate the installation base 302 to install and dock it with the threaded docking rod 402.

[0094] Install the baffle connecting mechanism 2 on the monitoring mechanism 1: First, assemble the monitoring mechanism 1 and install multiple monitoring plates 101 together. Adjust the number of monitoring plates 101 installed according to the specifications of the easily deformable and collapseable area. During installation, insert the locking block 104 at the end of the monitoring plate 101 into the buckle block 106, so that the protrusion 105 directly snaps into the slot 107, thereby achieving the tightness and limit of the two connected monitoring plates 101. After completion, install the baffle connecting mechanism 2 on the monitoring plates 101 at both ends. Align the mounting rod 201 from bottom to top with the threaded hole on the slider 103, and then screw the mounting rod 201 so that the threaded section 202 on it is threadedly connected to the slider 103. Then, take out the connecting seat 206 and install the connecting screw 207 on it into the threaded groove 203 to tighten it.

[0095] After the baffle connecting mechanism 2 is installed on the slider 103, it is installed onto the docking installation mechanism 4 located in the safe areas on both sides of the easily deformable and collapsible area. The slider 103 is pushed to move the installation rod 201, aligning it with the docking installation mechanism 4. The installation sleeve 204 is then threaded onto the threaded docking rod 402. Simultaneously, the first insert rod 205 is inserted into the installation base 401, pressing against the extension rod 404 and pushing it outwards to improve the stability of the docking installation mechanism 4. After completion, the baffle connecting mechanism 2 supports the monitoring plate 101 on the side wall of the pit. It should be ensured that the laser monitoring structure 3 is directly facing the monitoring plate 101 so that the laser ranging sensor 310 on it can measure the distance between it and the monitoring plate 101. The distance between the laser ranging sensor 310 and the monitoring plate 101 can be calibrated first, and the initial data recorded. The servo motor 306 in the laser monitoring structure 3 starts intermittently at timed intervals. When it starts, it drives the top plate 315 to open the start button 309 of the laser range sensor 310, so that the laser range sensor 310 can monitor the distance between itself and the monitoring plate 101 at timed intervals. By comparing the data, the deformation of the easily deformable and collapseable area of ​​the foundation pit can be reflected.

[0096] Finally, the monitoring and alarm mechanism 5 is assembled and fixed on the foundation pit. The monitoring probe 502 is pointed towards the easily deformable and collapsible area to observe, monitor, and record the environment of the foundation pit. This completes the installation of all devices in this invention. After the laser rangefinder 310 measures the distance between itself and the monitoring plate 101, the microprocessor and power storage module 308 transmits the data to the information processing module 506 through the information receiving module 504. The information processing module 506 statistically records the data, compares multiple measurements, and monitors the deformation. When the deformation reflected by the data exceeds the alarm point, the audible and visual alarm module 505 starts to sound an alarm, the monitoring probe 502 also sounds an alarm on the monitored screen, and displays the warning information on the display screen 503.

[0097] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A device for monitoring the deformation of foundation pits in building construction, characterized in that, The system includes a docking installation mechanism (4), a baffle connection mechanism (2), a laser monitoring structure (3), and a monitoring mechanism (1). Multiple docking installation mechanisms (4) are vertically inserted into the side wall of the pit and arranged horizontally. The docking installation mechanisms (4) located on the outer sides are set in the safety area on both sides of the easily deformable and collapseable area, and the baffle connection mechanism (2) is connected to them. The remaining docking installation mechanisms (4) are set in the easily deformable and collapseable area, and the laser monitoring structure (3) is connected to them. The monitoring mechanism (1) spans all the baffle connection mechanisms (2), and the two ends of the monitoring mechanism (1) are connected to the corresponding baffle connection mechanism (2). The monitoring mechanism (1) includes a monitoring plate (101), which is a long strip plate. The laser monitoring structure (3) is directly opposite the monitoring plate (101). The laser monitoring structure (3) includes a sleeve (301) and a mounting base (302) disposed at the bottom of the sleeve (301). A second insert rod (304) is fixedly fitted inside the mounting base (302) and the lower end of the second insert rod (304) extends out of the mounting base (302). A motor compartment (305) is provided on the outer side of the sleeve (301), and a servo motor (306) is installed in the motor compartment (305). The output end of the servo motor (306) extends into the sleeve (301) and is connected to a half gear (311). The top of the sleeve (301) is fitted with a microprocessor and energy storage module (308), which is formed by combining a microprocessor module and a battery module. A charging port (316) is installed on the side wall of the sleeve (301) close to the battery module. A laser rangefinder (310) is mounted on the top of the microprocessor and energy storage module (308), and a start button (309) for the laser rangefinder (310) is mounted on the bottom of the microprocessor and energy storage module (308). An axial limiting groove (317) is provided on the inner wall of the middle part of the sleeve (301). A drive frame (312) is slidably arranged in the limiting groove (317). A rack (313) that meshes with the half gear (311) is provided on the drive frame (312). A top plate (315) is installed at the end of the drive frame (312) close to the start button (309).

2. The foundation pit deformation monitoring device for building engineering according to claim 1, characterized in that: A pulley (314) is provided on the surface of the drive frame (312) that contacts the limiting groove (317), and an anti-slip pad (303) is installed on the outer wall of the mounting base (302).

3. A foundation pit deformation monitoring device for building engineering according to claim 1 or 2, characterized in that: The microprocessor and energy storage module (308) is electrically connected to the servo motor (306) via a power supply line (307), and is electrically connected to the laser rangefinder (310).

4. The foundation pit deformation monitoring device for building engineering according to claim 1, characterized in that: The docking installation mechanism (4) includes a mounting base (401) inserted into the side wall of the pit. The bottom of the mounting base (401) is a base end (403) with a pointed tip, and the top is connected to a threaded docking rod (402). The mounting base (401) is a hollow column, and multiple radial extension rods (404) are slidably arranged through the side wall. A stop rod end (406) is installed on one end of the extension rod (404) inside the mounting base (401), and a baffle (405) is provided between the stop rod end (406) and the extension rod (404). The laser monitoring structure (3) is threadedly connected to the threaded docking rod (402) in the corresponding docking installation mechanism (4) through the mounting base (302). The second insert rod (304) is inserted into the mounting base (401), and the extension top rod (404) is pushed out of the mounting base (401) and embedded in the side wall of the pit.

5. The foundation pit deformation monitoring device for building engineering according to claim 4, characterized in that: The baffle connecting mechanism (2) includes a mounting rod (201) and a mounting sleeve (204) fixed at the bottom of the mounting rod (201). The mounting rod (201) has threaded sections (202) distributed on it. A first insert rod (205) is fitted and fixed inside the mounting sleeve (204), and the lower end of the first insert rod (205) extends out of the mounting sleeve (204). The mounting sleeve (204) is threadedly connected to the threaded docking rod (402) in the corresponding docking mounting mechanism (4). The first insert rod (205) is inserted into the mounting base (401), and the extension top rod (404) is pushed out of the mounting base (401) and embedded in the side wall of the pit.

6. The foundation pit deformation monitoring device for building engineering according to claim 5, characterized in that: The monitoring mechanism (1) also includes a slide (102) and a slider (103). The side of the monitoring plate (101) is provided with a slide (102), and multiple sliders (103) are slidably disposed in the slide (102). The mounting rod (201) passes vertically through the corresponding slider (103) and is threadedly connected to the slider (103) through the threaded section (202). The monitoring plate (101) is supported on the opposite side of the laser monitoring structure (3) as the ranging reference surface of the laser ranging sensor (310).

7. The foundation pit deformation monitoring device for building engineering according to claim 5, characterized in that: The mounting rod (201) has a threaded groove (203) on its top surface, and a connecting screw (207) is threadedly connected through the threaded groove (203). A connecting seat (206) is fixed on the connecting screw (207), and a hand handle (208) is fixed on the connecting seat (206).

8. A deformation monitoring device for foundation pits in building engineering according to claim 6, characterized in that: The monitoring plate (101) consists of multiple pieces, spliced ​​together end to end. One end of the monitoring plate (101) is provided with a locking block (104), and the other end is provided with a fastening block (106). The locking block (104) is provided with a protrusion (105), and the fastening block (106) is provided with a slot (107). The locking block (104) and the fastening block (106) are engaged and connected through the protrusion (105) and the slot (107).

9. A deformation monitoring device for foundation pits in building engineering according to claim 1, characterized in that: It also includes a monitoring and alarm mechanism (5), which includes a pole (501) and a monitoring probe (502). The pole (501) is fixedly installed on the foundation pit, and the monitoring probe (502) is installed at the top of the pole (501). The monitoring probe (502) is set towards the easily deformable and collapseable area.

10. A deformation monitoring device for foundation pits in building engineering according to claim 9, characterized in that: The pole (501) is also equipped with a display screen (503), and the back of the display screen (503) is provided with an information receiving module (504), an audio-visual warning module (505) and an information processing module (506). The monitoring probe (502) is electrically connected to the information processing module (506), the information receiving module (504) is electrically connected to the microprocessor and energy storage module (308) and the information processing module (506), and the sound and light warning module (505) is electrically connected to the information processing module (506).

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