Foundation pit monitoring rod piece integrating various sub-target monitoring functions

Abstract

The utility model provides a foundation pit monitoring rod piece integrating various sub-target monitoring functions, a rod body is located on the outer side of a foundation pit, the lower end of the rod body extends to the lower elevation of the foundation pit, the upper end of the rod body extends out of the upper elevation of the foundation pit in the longitudinal direction, and a plurality of displacement sensors are arranged on the upper half section of the rod body; a plurality of water level sensors are arranged on the lower half section of the rod body; the plurality of stress-strain sensors are uniformly distributed on the rod body; and the data acquisition module is correspondingly arranged at the top of the rod body and is in data connection with the displacement sensor, the water level sensor and the stress-strain sensor through data lines. Multiple monitoring elements are integrated, multiple key parameters such as foundation pit soil displacement, underground water level and supporting structure stress and strain can be monitored at the same time, the monitoring system is simplified, and the monitoring efficiency and the data accuracy are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of foundation pit monitoring, specifically relates to a kind of foundation pit monitoring pole piece of multiple sub-object monitoring functions in one. BACKGROUND

[0002] In modern civil engineering construction, foundation pit engineering as the important link of underground part construction of building, its safety is directly related to the success or failure of the whole project. Foundation pit engineering faces many risks in the construction process, such as soil deformation, which may cause surrounding buildings to tilt, ground subsidence, etc. Groundwater level changes will affect the stability of the soil, and even cause foundation pit gushing accidents. Uneven stress of supporting structure may cause supporting structure damage, and further endanger the safety of foundation pit and surrounding environment. Therefore, it is particularly necessary to accurately and comprehensively monitor the foundation pit.

[0003] The existing foundation pit monitoring technology and equipment have many shortcomings. Different monitoring sub-objects often require separate equipment and lines, for example, a separate set of equipment is required to monitor soil displacement, and another set of equipment and wiring is required to monitor groundwater level. This not only leads to a significant increase in monitoring costs, but also makes wiring extremely complex, and the integration of data from each sub-object is extremely difficult, making it difficult to achieve efficient, real-time data comparison and analysis, and unable to provide comprehensive and accurate basis for engineering decision-making in a timely manner.

[0004] Therefore, it is necessary to provide an improved technical solution to address the above-mentioned deficiencies in the prior art. UTILITY MODEL CONTENT

[0005] The utility model aims at overcoming the deficiencies in the prior art, and provides a foundation pit monitoring pole piece that integrates multiple sub-object monitoring functions.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions:

[0007] A foundation pit monitoring pole piece that integrates multiple sub-object monitoring functions, characterized by comprising:

[0008] A pole body, the pole body is located outside the foundation pit, the lower end of the pole body extends to the lower elevation of the foundation pit, and the upper end of the pole body extends out of the upper elevation of the foundation pit along the longitudinal direction;

[0009] A displacement sensor, a plurality of displacement sensors are provided on the upper half of the pole body;

[0010] A water level sensor, a plurality of water level sensors are provided on the lower half of the pole body;

[0011] A stress-strain sensor, a plurality of stress-strain sensors are uniformly distributed on the pole body;

[0012] A data acquisition module is correspondingly arranged at the top of the rod body and is in data connection with the displacement sensor, the water level sensor and the stress and strain sensor through a data line.

[0013] Preferably, the data acquisition module is correspondingly connected with a wireless transmission module, and the wireless transmission module is wirelessly connected with a data processing center.

[0014] Preferably, the rod body comprises a plurality of pipe sections which are spliced with each other, and any two adjacent pipe sections are fixed through a connecting rod which is slidingly assembled in the two pipe sections.

[0015] Preferably, the pipe section is provided with an annular supporting piece on the outer wall.

[0016] Preferably, one end of the connecting rod which extends into the pipe section is provided with a sliding flange, and the end of the pipe section is provided with an annular baffle corresponding to the sliding flange.

[0017] Preferably, the rod body is provided with mounting holes for mounting the displacement sensor, the water level sensor and the stress and strain sensor.

[0018] Preferably, the top of the rod body is provided with a mounting platform corresponding to the data acquisition module, and a top plate is connected to the mounting platform through a stand column, and the top plate is provided with a rain cover corresponding to the data acquisition module at the edge.

[0019] Preferably, the rain cover is a transparent corrugated pipe.

[0020] Beneficial effects: The application integrates multiple monitoring elements, can simultaneously realize monitoring of multiple key parameters such as soil displacement of a foundation pit, underground water level and stress and strain of a supporting structure, simplifies a monitoring system, and improves monitoring efficiency and data accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0021] The drawings accompanying the specification provide further understanding of the present application. The schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute an improper limitation on the present application. Among them:

[0022] Fig. 1 A structure diagram of a monitoring rod in the specific embodiment provided by the present application;

[0023] Fig. 2 A structure diagram of a rod body in the specific embodiment provided by the present application.

[0024] In the figure: 1, rod body; 2, foundation pit; 3, water level sensor; 4, stress and strain sensor; 5, displacement sensor; 6, mounting platform; 7, rain cover; 8, data acquisition module; 9, top plate; 101, pipe joint; 102, connecting rod; 103, sliding flange; 104, supporting piece. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below, obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0026] In the description of the present application, the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" and the like is the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and does not require the present application to be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application. The terms "connected", "connected" used in the present application should be understood broadly, for example, it can be fixed connection, or detachable connection; it can be directly connected, or indirectly connected through intermediate components. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0027] The present application will be described in detail below with reference to the drawings and in combination with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0028] As shown in Figs. 1-2 A foundation pit 2 monitoring rod piece integrating multiple sub-object monitoring functions, comprising a rod body 1, a displacement sensor 5, a water level sensor 3, a stress and strain sensor 4 and a data acquisition module 8, the rod body 1 is located outside the foundation pit 2, specifically located 1-3m outside the outer side, the lower end of the rod body 1 extends to the lower elevation of the foundation pit 2, and the upper end of the rod body 1 extends out of the upper elevation of the foundation pit 2 along the longitudinal direction; wherein the rod body 1 is made of high-strength, corrosion-resistant alloy material to ensure long-term stable operation in complex foundation pit 2 environment. Its shape can be an elongated cylinder, the length is determined according to the actual depth requirement of the foundation pit 2, for example, the common foundation pit 2 depth is 10 meters, the rod body 1 length is set to 12 meters, and the diameter is about 15 centimeters. This shape and size design not only facilitates the installation and embedding of the rod piece, but also ensures good stability in the soil.

[0029] The upper half of the rod body 1 is provided with a plurality of displacement sensors 5, which can accurately perceive the displacement change of the rod with the soil body. The displacement sensors 5 are installed at different depth positions of the upper half of the rod body 1 and are tightly connected with the rod body 1 through bolts or other forms, preferably 3, and the longitudinal spacing can be 1-2 meters. The lower half of the rod body 1 is provided with a plurality of water level sensors 3, which are close to the bottom elevation of the foundation pit 2 and are located at different heights, adopt waterproof packaging, monitor the underground water level by sensing the humidity change of the surrounding soil body, preferably 3, and the longitudinal spacing can be 1-2 meters. A plurality of stress and strain sensors 4 are uniformly distributed on the rod body 1. The stress and strain sensor 4 is inlaid on the side of the rod close to the foundation pit 2. The stress and strain sensor 4 utilizes the principle of strain gauge to monitor the stress and strain of the rod transmitted by the supporting structure in real time.

[0030] The data acquisition module 8 is correspondingly arranged at the top of the rod body 1 and is connected with the displacement sensor 5, the water level sensor 3 and the stress and strain sensor 4 through data lines. The sensors are connected through internal lines and work cooperatively to collect and transmit the data collected by each sensor. The data acquisition module 8 usually includes units such as analog-to-digital converters (ADCs) and the working principle mainly depends on the cooperative work of the sensors and the ADCs. The sensors are responsible for capturing external physical parameters and converting them into voltage or current signals, while the ADCs further convert these analog signals into digital signals. The data acquisition module 8 can quickly collect the data of each sensor at a preset frequency. The collected data is first stored in a small local storage chip to prevent data loss. At the same time, the rod is equipped with a wireless transmission module, and the data acquisition module 8 is correspondingly connected with the wireless transmission module. The wireless transmission module is wirelessly connected with the data processing center and uses advanced wireless communication technology for data transmission, so as to regularly send the stored data to the remote data processing center. The data processing center analyzes and processes the received data to generate intuitive charts and reports for engineers to view and make decisions. In this way, the key parameters of the foundation pit 2 can be monitored in real time and comprehensively, and potential risks can be found in time. For example, when the soil displacement or the stress and strain of the supporting structure are abnormal, an alarm can be sent quickly to give engineers valuable time to take appropriate measures. The more comprehensive data provided by the rod can help engineers make more scientific and reasonable engineering decisions, thereby significantly improving the safety and reliability of the foundation pit 2 project.

[0031] In an optional embodiment, in order to ensure the adaptability of the rod body 1 to the soil body outside the foundation pit 2, the rod body 1 is provided with a plurality of pipe sections 101 that are spliced with each other. Each pipe section 101 has a length of 50-100 cm. Any two adjacent pipe sections 101 are fixed through connecting rods 102. The connecting rod 102 is a hollow rod body 1 with a length displacement of 20-50 cm. The two ends of the connecting rod 102 are respectively slidably assembled in two pipe sections 101. In this way, the connecting rod 102 can deform with the soil body during the settlement and deformation of the soil body, thereby ensuring the accuracy of the monitoring.

[0032] In the embodiment, the outer wall of the pipe section 101 is provided with an annular supporting sheet 104, the supporting sheet 104 is a horizontally extending metal sheet fixed on the outer wall of the pipe section 101 by welding, each pipe section 101 is provided with at least one supporting sheet 104, thereby increasing the contact area between the pipe section 101 and the soil, and the deformation of each pipe section 101 is more accurate. In order to maintain the integrity of the rod body 1, the end of the connecting rod 102 extending into the pipe section 101 is provided with a sliding flange 103, and the end of the pipe section 101 is provided with an annular baffle corresponding to the sliding flange 103. In this way, in the initial state, the distance between the two adjacent pipe sections 101 is not less than 5 cm, so that the rod body 1 can be stretched and contracted according to the actual length of the foundation pit 2, thereby adapting to different environments of the foundation pit 2. The rod body 1 is provided with a mounting hole for installing the displacement sensor 5, the water level sensor 3 and the stress and strain sensor 4.

[0033] In an optional embodiment, the top of the rod body 1 is provided with a mounting platform 6 corresponding to the data acquisition module 8, the mounting platform 6 is a metal disc, a stand is arranged above the mounting platform 6, and a top plate 9 is connected to the stand, thereby forming a mounting station corresponding to the data acquisition module 8. The top plate 9 is a conical structure, and a rain cover 7 corresponding to the data acquisition module 8 is arranged at the edge of the top plate 9. The rain cover 7 is a transparent corrugated pipe, so that the rain cover 7 can be pulled down according to actual needs, and the data acquisition module 8 is protected by the rain cover 7 to avoid rain erosion.

[0034] A lithium battery is arranged on the mounting station for supplying power to each sensor and the data acquisition module 8. An audible and light warning device is arranged on the top plate 9, which can send warning information when the monitored data reaches a threshold value.

[0035] The data acquisition frequency can be set according to different stages of the construction of the foundation pit 2. In the initial stage of construction, the frequency can be set to be low, such as once per hour. In the key stage of the construction of the foundation pit 2, the frequency can be increased to once per minute. The data processing and analysis method adopts a professional data analysis software to analyze the collected data in real time, draw a change curve, compare with a preset safety threshold, and judge the safety state of the foundation pit 2. In terms of regular inspection and calibration of the equipment, an appearance inspection is performed once a week, and a sensor calibration is performed once a month, so as to ensure that the monitoring rod is always in a good working state.

[0036] The above only describes the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application is within the protection scope of the pending claims of the present application.

Claims

1. A foundation pit monitoring pole member integrating multiple sub-object monitoring functions, characterized in that, The utility model relates to a kind of monitoring system of foundation pit, including: Rod body, the rod body is located foundation pit outside, the lower end of the rod body extends to the lower elevation of foundation pit, the upper end of the rod body is stretched out the upper elevation of foundation pit along longitudinal direction; Displacement sensor, the upper half of the rod body is equipped with multiple displacement sensors; Water level sensor, the lower half of the rod body is equipped with multiple water level sensors; Stress strain sensor, multiple stress strain sensors are uniformly distributed on the rod body; Data acquisition module, the data acquisition module is correspondingly set in the top of the rod body, and is connected with the displacement sensor, water level sensor and stress strain sensor by data line.

2. The pit monitoring pole integrating multiple seed monitoring functions according to claim 1, wherein, The data acquisition module is correspondingly connected with wireless transmission module, and the wireless transmission module is connected with data processing center wirelessly.

3. The pit monitoring pole of claim 1, wherein, The rod body includes multiple mutually spliced pipe sections, any two adjacent pipe sections are fixed by connecting rod, and the two ends of the connecting rod are respectively slidably assembled in the two pipe sections.

4. The pit monitoring pole of claim 3, wherein, The outer wall of the pipe section is provided with an annular supporting sheet.

5. The pit monitoring pole of claim 3, wherein, One end of the connecting rod extending into the pipe section is provided with a sliding flange, and the end of the pipe section is provided with an annular baffle corresponding to the sliding flange.

6. The pit monitoring pole of claim 1, wherein, The rod body is provided with a mounting hole for mounting the displacement sensor, water level sensor and stress strain sensor.

7. The pit monitoring pole of claim 1, wherein, The top of the rod body is provided with a mounting platform corresponding to the data acquisition module, and a top plate is connected above the mounting platform by a stand column, and the edge of the top plate is provided with a rain cover corresponding to the data acquisition module.

8. The pit monitoring pole integrating multiple seed monitoring functions according to claim 7, characterized in that, The rain cover is a transparent corrugated pipe.

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