Subway station foundation pit settlement monitoring device

Abstract

The utility model belongs to the technical field of subway monitoring, and discloses a subway station foundation pit settlement monitoring device which comprises a supporting mechanism, the supporting mechanism comprises two steel pipes matched with the shape of the section of the top of a foundation pit and a plurality of steel bars, the two steel pipes are fixedly connected with the two sides of the foundation pit, and the steel bars are arranged in a criss-cross mode to form a steel bar net. The reinforcing mesh is fixedly connected between the two steel pipes, the multiple monitoring mechanisms are arranged on the reinforcing mesh at intervals, each monitoring mechanism comprises a connecting rod, a connecting sleeve and a laser transmitter, the connecting sleeve is connected with the reinforcing mesh, one end of the connecting rod is slidably connected with the connecting sleeve, and the other end of the connecting rod extends into a soil layer; the laser transmitter is installed at the end, close to one end of the connecting sleeve, of the connecting rod. Through the arrangement of the supporting mechanism, a soil layer at the top of a foundation pit can be supported, more evacuation time can be won for constructors, through the arrangement of the monitoring mechanism, settlement can be effectively monitored in real time, and construction safety is ensured.

Description

Technical Field

[0001] This utility model relates to the field of subway monitoring technology, specifically to a device for monitoring settlement of subway station foundation pits. Background Technology

[0002] During the construction of subway station foundation pits, settlement monitoring is required to ensure the stability and safety of the pits. Most current foundation pit settlement monitoring devices can only monitor, such as the patent application with publication number CN118031901A, but lack effective protective measures. In the event of settlement collapse, they cannot provide sufficient evacuation time for construction personnel. Utility Model Content

[0003] To address the technical problems in the existing technology, this utility model provides a settlement monitoring device for subway station foundation pits, including a support mechanism. The support mechanism includes two steel pipes that match the cross-sectional shape of the top of the foundation pit and multiple reinforcing bars. The two steel pipes are fixedly connected to both sides of the foundation pit. The multiple reinforcing bars are arranged in a crisscross pattern to form a reinforcing mesh, which is fixedly connected between the two steel pipes. The device also includes multiple monitoring mechanisms, which are spaced apart on the reinforcing mesh. Each monitoring mechanism includes a connecting rod, a connecting sleeve, and a laser emitter. The connecting sleeve is connected to the reinforcing mesh. One end of the connecting rod is slidably connected to the connecting sleeve, and the other end extends into the soil layer at the top of the foundation pit. The laser emitter is installed at the end of the connecting rod near the connecting sleeve.

[0004] Preferably, the connecting sleeve is slidably connected to the reinforcing mesh, and the connecting sleeve is provided with a fixing buckle. When the fixing buckle is engaged with the reinforcing mesh, the connecting sleeve does not slide.

[0005] Preferably, the connecting sleeve is further provided with a developing plate, which is connected to the connecting sleeve by a fixing rod, and the side of the developing plate near the connecting sleeve is set perpendicular to the emission port of the laser emitter.

[0006] Preferably, the developing plate is provided with size scale lines, and the zero mark of the size scale lines is at the same horizontal height as the port of the connecting sleeve.

[0007] Preferably, the developing plate is further provided with an alarm component, which includes an alarm bell and a photosensitive switch. The photosensitive switch is connected to the main power supply circuit of the alarm bell. The photosensitive switch is installed on the size scale line and is located at the end away from the steel mesh at the zero scale. When the laser emitted by the laser emitter comes into contact with the photosensitive switch, the alarm bell works; otherwise, it does not work.

[0008] Preferably, the connecting rod has a stop block at one end located inside the soil layer, and the size of the stop block is larger than the inner diameter of the connecting sleeve.

[0009] Beneficial effects:

[0010] 1. In this utility model, the support mechanism, which includes two steel pipes matching the cross-sectional shape of the top of the foundation pit and multiple steel bars arranged in a crisscross pattern to form a steel mesh, can support the top soil layer of the foundation pit. In the event of settlement and collapse, it can buy more evacuation time for construction personnel. The monitoring mechanism can monitor the settlement in real time and effectively to ensure construction safety. Specifically, when settlement occurs, the soil layer will cause the connecting rod to move down, causing the laser emitter at the bottom of the connecting rod to slide along the connecting sleeve and slide out of the connecting sleeve. At this time, the construction personnel can confirm that there is a collapse or settlement at this location or in the surrounding area by observing the laser.

[0011] 2. In this utility model, by setting the connecting sleeve and the steel mesh to slide together, the distance between the laser emitter and the port of the connecting sleeve can be adjusted, thereby realizing the adjustment of the settlement monitoring level. By setting the fixing buckle, the connecting sleeve can be easily locked. Specifically, the closer the laser emitter is to the port, the higher the settlement monitoring level, and even a small degree of collapse can be detected. Conversely, the farther away the laser emitter is from the port, the lower the settlement monitoring level.

[0012] 3. In this utility model, the setting of the developing plate can improve the brightness of the laser emitted by the laser emitter, making it easier for construction personnel to detect; the setting of the size scale lines can confirm the specific depth of settlement, and the setting of the zero scale position can facilitate the calculation of the depth of settlement.

[0013] 4. In this utility model, by setting an alarm component including an alarm bell and a photosensitive switch, an audible alarm can be triggered when the settlement exceeds the photosensitive switch, making it easier for construction personnel to detect and further ensuring construction safety. The installation position of the photosensitive switch can be set at the warning depth of the settlement.

[0014] 5. In this utility model, the setting of the stop block can prevent the connecting rod from detaching from the connecting sleeve during collapse. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model when no settlement occurs;

[0017] Figure 2 This is a schematic diagram of the overall structure of this utility model when settlement occurs;

[0018] Figure 3 for Figure 2 Detailed structural diagram of point A in the middle;

[0019] Figure 4 This is a schematic diagram of the installation structure of the support mechanism of this utility model;

[0020] Figure 5 This is a sectional view of the installation structure of the connecting rod and connecting sleeve of this utility model.

[0021] In the diagram: 1. Support mechanism; 11. Steel pipe; 12. Reinforcing bar; 2. Connecting rod; 21. Stop block; 3. Connecting sleeve; 4. Laser emitter; 5. Developing plate; 51. Dimension scale line; 6. Photosensitive switch. Detailed Implementation

[0022] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0023] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0026] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0027] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0028] This utility model provides a device for monitoring settlement of foundation pits in subway stations, such as... Figure 1 , Figure 2 , Figure 4 , Figure 5As shown, the structure includes a support mechanism 1, which is installed at the top of the foundation pit. Depending on the actual situation, the support mechanism 1 can also be installed in other locations prone to collapse. The support mechanism 1 includes two steel pipes 11 matching the cross-sectional shape of the top of the foundation pit and multiple reinforcing bars 12. The two steel pipes 11 are fixedly connected to both sides of the foundation pit, and the multiple reinforcing bars 12 are arranged in a crisscross pattern to form a reinforcing mesh. The reinforcing mesh is fixedly connected between the two steel pipes 11. The structure also includes multiple monitoring mechanisms, which are spaced apart on the reinforcing mesh. The mechanism includes a connecting rod 2, a connecting sleeve 3, and a laser emitter 4. The connecting sleeve 3 is connected to the steel mesh. One end of the connecting rod 2 is slidably connected to the connecting sleeve 3, and the other end extends into the soil layer at the top of the foundation pit. The laser emitter 4 is horizontally installed at the end of the connecting rod 2 near the connecting sleeve 3. The laser emitter 4 is always in working condition. When it is inside the connecting sleeve 3, the laser cannot be detected by the construction personnel due to the obstruction of the connecting sleeve 3. When it is removed from the connecting sleeve 3, the emitted laser can be detected by the construction personnel immediately.

[0029] In this embodiment, the support mechanism 1, consisting of two steel pipes 11 matching the cross-sectional shape of the top of the foundation pit and multiple reinforcing bars 12 arranged in a crisscross pattern to form a reinforcing mesh, can support the top soil layer of the foundation pit. In the event of settlement and collapse, it can support the collapsed soil layer, thereby buying more evacuation time for construction personnel. The monitoring mechanism can monitor the settlement in real time and effectively, ensuring construction safety. Specifically, when settlement occurs, the soil layer will cause the connecting rod 2 to move downward, causing the laser emitter 4 at the bottom of the connecting rod 2 to slide along the connecting sleeve 3 and slide out of the connecting sleeve 3. At this time, the construction personnel can confirm that there is a collapse and settlement at this location or in the surrounding area by observing the laser. The depth of settlement can be preliminarily confirmed by the distance between the laser and the port of the connecting sleeve 3.

[0030] Preferred, such as Figure 4 , Figure 5 As shown, the connecting sleeve 3 is slidably connected to the reinforcing mesh. The connecting sleeve 3 is provided with a fixing buckle. When the fixing buckle is engaged with the reinforcing bar 12, the connecting sleeve 3 does not slide.

[0031] In this embodiment, by setting the connecting sleeve 3 to slide the steel mesh, the distance between the laser emitter 4 and the port of the connecting sleeve 3 can be adjusted, thereby adjusting the settlement monitoring level. The connecting sleeve 3 can be easily locked by setting the fixing buckle. Specifically, the closer the laser emitter 4 is to the port, the higher the settlement monitoring level, and the smaller the degree of collapse, the lower the settlement monitoring level.

[0032] Preferred, such as Figure 2 , Figure 3As shown, the connecting sleeve 3 is also provided with a developing plate 5. The developing plate 5 is connected to the connecting sleeve 3 by a fixing rod. The side of the developing plate 5 near the connecting sleeve 3 is set perpendicular to the emission port of the laser emitter 4. The developing plate 5 is provided with a size scale line 51. The zero mark of the size scale line 51 is at the same horizontal height as the port of the connecting sleeve 3.

[0033] In this embodiment, the setting of the developing plate 5 can improve the brightness of the laser emitted by the laser emitter 4, making it easier for construction personnel to spot; the setting of the size scale line 51 can confirm the specific depth of settlement, and the setting of the zero scale position can facilitate the calculation of the depth of settlement.

[0034] Preferred, such as Figure 2 , Figure 3 As shown, the developing plate 5 is also equipped with an alarm component, which includes an alarm bell and a photosensitive switch 6. The photosensitive switch 6 is connected to the main power supply circuit of the alarm bell. The photosensitive switch 6 is installed on the size scale line 51 and is located at the end away from the steel mesh at the zero scale. To ensure that the laser can effectively contact the photosensitive switch 6, the photosensitive switch 6 is located on the moving path of the laser emitter 4. The distance between the photosensitive switch 6 and the zero scale is the maximum distance allowed for settlement, i.e., the warning depth. This maximum distance can be confirmed by simulation or previous data. When the laser emitted by the laser emitter 4 contacts the photosensitive switch 6, the alarm bell is activated; otherwise, it is deactivated.

[0035] In this embodiment, by setting up an alarm component including an alarm bell and a photosensitive switch 6, an audible alarm can be triggered when the settlement exceeds the warning line, making it easier for construction personnel to detect and further ensuring construction safety.

[0036] Preferred, such as Figure 1 As shown, the connecting rod 2 has a stop block 21 at one end located inside the soil layer, and the size of the stop block 21 is larger than the inner diameter of the connecting sleeve 3.

[0037] In this embodiment, the stop block 21 is provided to prevent the connecting rod 2 from detaching from the connecting sleeve 3 during collapse.

[0038] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A device for monitoring settlement of a subway station foundation pit, comprising a support mechanism (1), wherein the support mechanism (1) comprises two steel pipes (11) matching the cross-sectional shape of the top of the foundation pit and multiple reinforcing bars (12), the two steel pipes (11) being fixedly connected to both sides of the foundation pit, and the multiple reinforcing bars (12) being arranged in a crisscross pattern to form a reinforcing mesh, the reinforcing mesh being fixedly connected between the two steel pipes (11), characterized in that, It also includes multiple monitoring mechanisms, which are spaced apart on the steel mesh. Each monitoring mechanism includes a connecting rod (2), a connecting sleeve (3), and a laser emitter (4). The connecting sleeve (3) is connected to the steel mesh. One end of the connecting rod (2) is slidably connected to the connecting sleeve (3), and the other end extends into the soil layer at the top of the foundation pit. The laser emitter (4) is installed at the end of the connecting rod (2) near the end of the connecting sleeve (3).

2. The device for monitoring settlement of subway station foundation pits according to claim 1, characterized in that, The connecting sleeve (3) is slidably connected to the steel mesh. The connecting sleeve (3) is provided with a fixing buckle. When the fixing buckle is engaged with the steel bar (12), the connecting sleeve (3) does not slide.

3. The device for monitoring settlement of subway station foundation pits according to claim 2, characterized in that, The connecting sleeve (3) is also provided with a developing plate (5). The developing plate (5) is connected to the connecting sleeve (3) by a fixing rod. The side of the developing plate (5) near the connecting sleeve (3) is set perpendicular to the emission port of the laser emitter (4).

4. The device for monitoring settlement of subway station foundation pits according to claim 3, characterized in that, The developing plate (5) is provided with a size scale line (51), and the zero mark of the size scale line (51) is at the same horizontal height as the port of the connecting sleeve (3).

5. A device for monitoring settlement of subway station foundation pits according to claim 4, characterized in that, The developing plate (5) is also provided with an alarm component, which includes an alarm bell and a photosensitive switch (6). The photosensitive switch (6) is connected to the main power supply circuit of the alarm bell. The photosensitive switch (6) is installed on the size scale line (51) and is located at the end away from the steel mesh at the zero scale. When the laser emitted by the laser emitter (4) comes into contact with the photosensitive switch (6), the alarm bell works; otherwise, it does not work.

6. The device for monitoring settlement of subway station foundation pits according to claim 1, characterized in that, The connecting rod (2) has a stop block (21) at one end inside the soil layer. The size of the stop block (21) is larger than the inner diameter of the connecting sleeve (3).

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