Deep foundation pit engineering monitoring device
By using a combination of support columns and tension sensors in deep foundation pit engineering, the problem of easy damage to monitoring devices during collapse was solved, enabling continuous monitoring and early warning, and ensuring construction safety.
Patent Information
- Application Number
- CN202520490937.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-03-20
AI Technical Summary
Existing monitoring devices for deep foundation pit projects are easily damaged when the soil collapses, leading to monitoring interruptions, failure to provide timely early warning information, and impacting construction safety.
A monitoring device for deep foundation pit engineering was designed, which adopts a support mechanism and a connection mechanism. The support column and the lower insertion column are inserted into the soil layer to form a stable support frame. Combined with a tension sensor and connecting steel cable, the device can realize real-time monitoring and early warning of the foundation pit.
When the foundation pit collapsed, the device remained intact, enabling continuous monitoring and providing early warnings, thus improving the stability and timeliness of monitoring and preventing further deterioration of the accident.
Smart Images
Figure CN223880396U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to deep foundation pit engineering technical field, concretely is a deep foundation pit engineering monitoring device. BACKGROUND
[0002] Deep foundation pit engineering refers to the deep foundation pit excavation and support engineering in the urban construction and underground space development for building high-rise buildings, subway stations, underground garages and other underground structures, which usually involves the foundation pit with a depth of more than 5 meters or even dozens of meters, and the geological conditions, surrounding environment, underground water level and other factors need to be considered comprehensively during the construction process, and various support structures (such as underground continuous wall, pile anchor support, internal support, etc.) are used to ensure the stability and safety of the foundation pit. Deep foundation pit engineering has the characteristics of complex technology, high construction difficulty and high risk, and has high requirements for design, construction and monitoring, and is one of the important topics in civil engineering field. Deep foundation pit engineering monitoring operation refers to the process of real-time, systematic observation and data analysis on the key parameters such as deformation, stress and underground water level of the foundation pit and surrounding environment during the construction of deep foundation pit, in order to evaluate the stability of the foundation pit and the safety of the support structure, and to discover potential risks in time and take corresponding measures.
[0003] It is found that, as an important part of underground space development, deep foundation pit engineering involves large-scale excavation operation on the original foundation during the construction process, forming a deep foundation pit structure. In order to ensure the stability of the foundation pit, support structures are usually arranged on the inner wall of the foundation pit. However, despite the strict support measures, soil collapse accidents still frequently occur during the construction of deep foundation pit, which not only may cause huge economic losses, but also may cause serious personnel casualties. The existing deep foundation pit engineering monitoring device is usually arranged on the ground surface above the foundation pit for real-time monitoring of the foundation pit and surrounding environment. However, in actual construction, when the soil collapse occurs in the foundation pit, part of the monitoring device will be directly brought down or damaged due to the movement of the collapsed soil, resulting in interruption of the monitoring work. The failure of such monitoring device not only cannot provide early warning information in the early stage of soil collapse, but also makes the construction team miss the opportunity to take emergency remedial measures during the collapse process. In fact, soil collapse is a gradual process, and there is a certain time window between local instability and complete collapse. If timely monitoring and effective measures can be taken during this period, the accident can often be avoided from further deterioration. However, the monitoring device is damaged due to collapse, which seriously affects its continuous monitoring ability during the soil collapse process and weakens the timeliness and effectiveness of engineering safety management.
[0004] Therefore, the utility model designs a deep foundation pit engineering monitoring device to solve the above problems. UTILITY MODEL CONTENTS
[0005] The utility model discloses a deep foundation pit engineering monitoring device to solve the problem in the above background technology.
[0006] To realize above -mentioned purpose, the utility model provides the following technical scheme:
[0007] A deep foundation pit engineering monitoring device, including total station monitoring appearance, the lower portion of total station monitoring appearance is provided with support mechanism, the outer side of support mechanism is provided with connecting mechanism, support mechanism includes support stand, support rod and instrument carrier pole, the lower end of total station monitoring appearance is installed with instrument carrier pole, the lower end of instrument carrier pole is installed with support rod, the left end of support rod is fixedly installed with support stand, connecting mechanism includes first connecting aluminium pole, mounting seat, tension sensor body and connecting steel cable, first connecting aluminium pole is arranged between every two support stands, is installed with mounting seat on first connecting aluminium pole, is fixedly installed with tension sensor body on the outer wall of mounting seat, the one end away from mounting seat of tension sensor body is fixedly connected with connecting steel cable.
[0008] Optionally, the support mechanism further comprises a lower insertion column and a protective carrier plate, the lower end of the support stand is fixedly installed with the lower insertion column, the middle part of the lower insertion column is fixedly installed with the protective carrier plate, and four groups of the support stand, the lower insertion column and the protective carrier plate are inserted into the soil.
[0009] Optionally, two support rods are fixedly installed on the support stand, and the two support rods and the support stand form a triangular structure.
[0010] Optionally, a threaded rod is arranged at the connection position of the two support rods, the threaded rod is fixedly installed on the instrument carrier pole, and a limiting nut is arranged on the outer side of the threaded rod.
[0011] Optionally, the connecting mechanism further comprises a second connecting aluminum rod, a first connecting screw rod and a second connecting screw rod, the right side of the first connecting aluminum rod is provided with the second connecting aluminum rod, the left end of the second connecting aluminum rod is fixedly installed with the first connecting screw rod, and the right end of the first connecting aluminum rod is fixedly installed with the second connecting screw rod.
[0012] Optionally, a plurality of groups of the first connecting aluminum rod, the second connecting aluminum rod, the first connecting screw rod and the second connecting screw rod are distributed between two groups of the support mechanism from left to right, and the end, away from the tension sensor body, of the connecting steel cable is fixedly connected with a connecting plate.
[0013] Compared with the prior art, the utility model has the advantages that:
[0014] 1. The utility model discloses a support mechanism is provided with, and the support column is in-depth stable soil layer with lower column, and the anti-overturning moment of cooperation protection load board transverse extension makes the survival rate of whole structure in the collapse greatly promotes, the triangular structure that support rod and instrument carrier pole constitute, through the screw rod and the limiting nut realizes the pitch angle fine adjustment of total station monitoring appearance, and the monitoring distance and the anti -vibration demand are taken into account, even if the foundation pit is completely collapsed, the external support mechanism can still keep integrity because of being far away from the collapse area, as the temporary observation platform after the disaster, continues to provide residual structure displacement data.
[0015] 2. The utility model discloses a connecting mechanism is provided with, and the first connecting aluminum pole is connected with the second connecting aluminum pole through the screw rod and forms the light frame, and the combination of tension sensor body and connecting steel cable can trigger the early warning in the deformation initial stage of support structure, and the response is quick. ACCURACY OF DRAWINGS
[0016] Fig. 1 It is the structure schematic diagram of the utility model three -dimensional front view;
[0017] Fig. 2 It is the structure schematic diagram of the utility model plane front view;
[0018] Fig. 3 It is the structure schematic diagram of the utility model three -dimensional section view;
[0019] Fig. 4 It is the structure schematic diagram of the utility model three -dimensional bottom view;
[0020] Fig. 5 It is the structure schematic diagram of the utility model three -dimensional plan view;
[0021] Fig. 6 It is the structure schematic diagram of the utility model plane plan view.
[0022] In the drawing: 1, total station monitoring appearance, 2, support mechanism, 201, support column, 202, lower column, 203, protection load board, 204, support rod, 205, instrument carrier pole, 206, screw rod, 207, limiting nut, 3, connecting mechanism, 301, first connecting aluminum pole, 302, second connecting aluminum pole, 303, first connecting screw, 304, second connecting screw, 305, mounting seat, 306, tension sensor body, 307, connecting steel cable, 308, connecting plate. DETAILED DESCRIPTION
[0023] In the description of the utility model, it is necessary to understand that the orientation or positional relation indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or positional relation based on the orientation or positional relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "a plurality of" is two or more, unless otherwise specified.
[0024] In the description of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood through specific circumstances.
[0025] The technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.
[0026] Please refer to Figs. 1-6The utility model discloses a deep foundation pit engineering monitoring device, including total station monitoring appearance 1, the lower portion of total station monitoring appearance 1 is provided with support mechanism 2, the outer side of support mechanism 2 is provided with connecting mechanism 3, support mechanism 2 includes support column 201, support rod 204 and instrument carrier pole 205, the lower end of total station monitoring appearance 1 is installed with instrument carrier pole 205, the lower end of instrument carrier pole 205 is installed with support rod 204, the left end of support rod 204 is fixedly installed with support column 201, support mechanism 2 still includes lower insertion column 202 and protection carrier plate 203, the lower end of support column 201 is fixedly installed with lower insertion column 202, the middle part of lower insertion column 202 is fixedly installed with protection carrier plate 203, four groups of support column 201, lower insertion column 202 and protection carrier plate 203 are inserted into the soil, two support rods 204 are fixedly installed on support column 201, two support rods 204 and support column 201 form triangular structure, the junction of two support rods 204 is provided with threaded rod 206, threaded rod 206 is fixedly installed on instrument carrier pole 205, the outer side of threaded rod 206 is provided with limit nut 207;
[0027] Support mechanism 2 and connecting mechanism 3 complement each other, and form a complete support frame in combination, support column 201, lower insertion column 202 and protection carrier plate 203 adopt the installation mode of deep into the soil, when installing, a deep groove needs to be formed in the position about 10 meters away from the edge of the deep foundation pit according to the situation of the deep foundation pit in advance, then lower insertion column 202 and protection carrier plate 203 are embedded into the deep groove, and then the soil is filled and rammed or filled with cement, so as to ensure the stability of the installation, and the position about 10 meters away from the edge of the deep foundation pit can effectively avoid that the support column 201 directly falls down due to the collapse of the deep foundation pit, according to the above operation mode, four support mechanisms 2 are fixedly installed on the soil on the upper layer of the deep foundation pit, then total station monitoring appearance 1 is installed on instrument carrier pole 205, the monitoring range of total station monitoring appearance 1 can be effectively adjusted through loose limit nut 207, the difference is that, although support column 201 is away from the edge of the deep foundation pit, support rod 204 is installed on support column 201, two support rods 204 and support column 201 form a triangular structure, which effectively shortens the distance between total station monitoring appearance 1 and the deep foundation pit, so as to ensure that total station monitoring appearance 1 can still effectively perform the monitoring operation; under the normal monitoring condition, total station monitoring appearance 1 effectively monitors the deep foundation pit, when the deep foundation pit collapses, total station monitoring appearance 1 is not directly installed at the edge of the deep foundation pit, but is installed in the air through support mechanism 2, which can effectively avoid the accidental situation that total station monitoring appearance 1 falls down before the deep foundation pit collapses, and ensure that total station monitoring appearance 1 can still perform the data monitoring operation when the deep foundation pit accidentally collapses, and rapidly transmit the data abnormal information to the engineering terminal, effectively avoid the direct impact of the collapsed soil body, and the system stability is greatly improved compared with the traditional edge fixed scheme;
[0028] The connecting mechanism 3 comprises a first connecting aluminum rod 301, a mounting seat 305, a tension sensor body 306 and a connecting steel cable 307, the first connecting aluminum rod 301 is arranged between every two support columns 201, the mounting seat 305 is arranged on the first connecting aluminum rod 301, the tension sensor body 306 is fixedly installed on the outer wall of the mounting seat 305, and the connecting steel cable 307 is fixedly connected to one end of the tension sensor body 306 away from the mounting seat 305, the connecting mechanism 3 further comprises a second connecting aluminum rod 302, a first connecting screw 303 and a second connecting screw 304, the second connecting aluminum rod 302 is arranged on the right side of the first connecting aluminum rod 301, the first connecting screw 303 is fixedly installed on the left end of the second connecting aluminum rod 302, and the second connecting screw 304 is fixedly installed on the right end of the first connecting aluminum rod 301, a plurality of groups of the first connecting aluminum rod 301, the second connecting aluminum rod 302, the first connecting screw 303 and the second connecting screw 304 are distributed between the two groups of support mechanisms 2 from left to right, and the connecting plate 308 is fixedly connected to one end of the connecting steel cable 307 away from the tension sensor body 306;
[0029] The connecting mechanism 3 is used for reinforcing the whole device, and is additionally provided with a collapse emergency structure, a plurality of groups of the first connecting aluminum rod 301 and the second connecting aluminum rod 302 are installed between the support columns 201 through the threaded connection characteristics of the first connecting screw 303 and the second connecting screw 304, four groups of the connecting mechanism 3 are respectively installed between every two support mechanisms 2 to form a complete support frame, and in addition, the collapse emergency structure is used for quickly feeding back the deformation condition of the deep foundation pit support structure; before being started, the tension sensor body 306 in the collapse emergency structure needs to be connected to an engineering control terminal in advance, when being installed, the connecting plate 308 is fixedly installed on the support structure of the deep foundation pit through a welding or bolt mounting mode, when the deformation condition of the deep foundation pit support structure occurs, there is usually a large pressure change condition, at this time, the tension sensor body 306 can directly feed back the deformation condition of the deep foundation pit support structure, so that engineering monitoring personnel can quickly take emergency measures;
[0030] The working principle of the utility model is: the stable deployment of support mechanism 2: four groups of support mechanism 2 are pre-buried at ten meters outside the edge of deep foundation pit, each group is composed of support column 201, lower insertion column 202 and protection load plate 203, after lower insertion column 202 is embedded in pre-dug deep groove, is fixed through cement or rammed soil, protection load plate 203 expands the stress area horizontally, enhances the anti-overturning capacity, support rod 204 and instrument load rod 205 are connected through threaded rod 206 and limiting nut 207, not only shorten the distance between total station monitoring instrument 1 and deep foundation pit, but also adjust the instrument pitch angle through adjusting limiting nut 207, ensure that the monitoring range covers the key area of supporting structure; dynamic monitoring and reinforcement of connecting mechanism 3: the modular connection frame is composed of first connecting aluminum rod 301, second connecting aluminum rod 302 and first connecting screw 303, second connecting screw 304 between adjacent support mechanism 2, improve overall rigidity, one end of connecting cable 307 is welded or bolted on supporting structure through connecting plate 308, the other end is connected with tension sensor body 306, when the supporting structure is deformed due to collapse, the tension change of connecting cable 307 is captured in real time by tension sensor body 306, the data is analyzed through engineering terminal, if it exceeds the preset threshold (such as support displacement is greater than or equal to 8mm), the early warning signal is triggered immediately; continuous monitoring of collapse process: in the early stage of collapse, support mechanism 2 avoids direct impact because of being far away from the collapse area (ten meters away), total station monitoring instrument 1 continuously records the displacement image of supporting structure; at the same time, the tension sensor body 306 of connecting mechanism 3 synchronously feeds back the sudden change of cable tension (such as sudden increase of more than 20kN), the double data sources cross-verify the collapse expansion trend.
[0031] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A monitoring device for deep foundation pit engineering, comprising a total station monitoring instrument (1), characterized in that: A support mechanism (2) is provided below the total station monitoring instrument (1), and a connecting mechanism (3) is provided on the outside of the support mechanism (2). The support mechanism (2) includes a support column (201), a support rod (204), and an instrument carrier rod (205). The lower end of the total station monitoring instrument (1) is equipped with an instrument carrier rod (205), and the lower end of the instrument carrier rod (205) is equipped with a support rod (204). The left end of the support rod (204) is fixedly equipped with a support column (201). The connecting mechanism (3) The device includes a first connecting aluminum rod (301), a mounting base (305), a tension sensor body (306), and a connecting steel cable (307). A first connecting aluminum rod (301) is provided between every two support columns (201). A mounting base (305) is installed on the first connecting aluminum rod (301). A tension sensor body (306) is fixedly installed on the outer wall of the mounting base (305). A connecting steel cable (307) is fixedly connected to one end of the tension sensor body (306) away from the mounting base (305).
2. The deep foundation pit engineering monitoring device according to claim 1, characterized in that: The support mechanism (2) further includes a lower insertion column (202) and a protective carrier plate (203). The lower end of the support column (201) is fixedly installed with the lower insertion column (202), and the middle part of the lower insertion column (202) is fixedly installed with the protective carrier plate (203). The four sets of the support columns (201), lower insertion columns (202) and protective carrier plates (203) are inserted into the soil.
3. The deep foundation pit engineering monitoring device according to claim 1, characterized in that: The two support rods (204) are fixedly installed on the support column (201), and the two support rods (204) and the support column (201) form a triangular structure.
4. The deep foundation pit engineering monitoring device according to claim 3, characterized in that: A threaded rod (206) is provided at the connection of the two support rods (204). The threaded rod (206) is fixedly installed on the instrument carrier rod (205). A limit nut (207) is provided on the outside of the threaded rod (206).
5. The deep foundation pit engineering monitoring device according to claim 1, characterized in that: The connecting mechanism (3) further includes a second connecting aluminum rod (302), a first connecting screw (303), and a second connecting screw (304). The second connecting aluminum rod (302) is provided on the right side of the first connecting aluminum rod (301), the first connecting screw (303) is fixedly installed on the left end of the second connecting aluminum rod (302), and the second connecting screw (304) is fixedly installed on the right end of the first connecting aluminum rod (301).
6. The deep foundation pit engineering monitoring device according to claim 1, characterized in that: Multiple sets of first connecting aluminum rods (301), second connecting aluminum rods (302), first connecting screws (303) and second connecting screws (304) are distributed from left to right between the two sets of support mechanisms (2), and the end of the connecting steel cable (307) away from the tension sensor body (306) is fixedly connected to a connecting plate (308).