1. An intelligent monitoring and early warning system for a construction site deep foundation pit based on a digital twin technology is characterized by comprising a monitoring point creating module, a monitoring point management module, an information acquisition module, a threshold management module and a monitoring and early warning module;

the monitoring point creating module is used for receiving basic information, environmental information, soil property information and construction progress planning of any deep foundation pit in an externally-introduced construction area, analyzing the introduced data, analyzing all monitoring objects contained in the deep foundation pit, monitoring parameters and corresponding parameter thresholds of each monitoring object, creating a new monitoring point by combining the basic information and the analysis result of the deep foundation pit, and allocating unique monitoring point numbers and monitoring object numbers to the monitoring points and the monitoring objects;

the monitoring point management module is used for managing monitoring points and monitoring objects with different numbers, and the types of the monitoring objects comprise a supporting structure, underground water conditions, foundation pit bottom and surrounding soil bodies, surrounding buildings, surrounding pipelines and facilities;

the monitoring and early warning module receives displacement and settlement data sent by sensors arranged on each monitored object, wherein the displacement and settlement data comprise horizontal displacement and vertical displacement of a foundation pit, horizontal displacement of a deep layer of the foundation pit, tension of an anchor cable of the foundation pit, internal force of a supporting pile structure of the foundation pit and water level of the foundation pit, and the data of the monitored point and the monitored object are processed by combining environmental information;

and the threshold management module calls an early warning algorithm corresponding to the deep foundation pit to analyze and process the early warning algorithm according to the current progress, the displacement and settlement data sent by the current information acquisition module and the current threshold of the monitoring point and the monitoring object sent by the environment information and threshold management module.

2. The intelligent monitoring and early warning system for the deep foundation pit of the construction site based on the digital twin technology as claimed in claim 1, wherein the basic information of the deep foundation pit comprises the physical parameter information of the pit body of the deep foundation pit, the related information of the fixed structural member and the related information of the contained monitoring equipment; the physical parameter information comprises an enclosing wall and a peripheral pipeline; the related information of the fixed structural part comprises an upright post, an anchor rod and a soil nail; the relevant information of the monitoring equipment comprises an inclinometer, a level gauge and a total station.

3. The intelligent monitoring and early warning system for the deep foundation pit in the construction site based on the digital twin technology as claimed in claim 1, wherein the environmental information is divided into weather information and related information of other items having disturbance influence on the deep foundation pit, including groundwater conditions, soil at the bottom and periphery of the foundation pit, peripheral buildings, peripheral pipelines and facilities.

4. The intelligent monitoring and early warning system for the deep foundation pit of the construction site based on the digital twin technology as claimed in claim 1, wherein the soil property information comprises the soil property of the deep foundation pit, the surrounding soil property and the soil property information changed in excavation.

5. The intelligent monitoring and early warning system for the deep foundation pit of the construction site based on the digital twin technology as claimed in claim 1, wherein the process of calling the early warning algorithm corresponding to the deep foundation pit to analyze and process the early warning algorithm according to the displacement and settlement data sent by the current progress and current information acquisition module, the environmental information and the current threshold of the monitoring point and the monitoring object sent by the threshold management module comprises the following steps:

step 1, measuring and collecting comprehensive element information of the deep foundation pit, wherein the information comprises foundation soil texture, excavation depth, foundation and importance of adjacent earth surface and underground building foundation and underground pipeline information. Inputting the information into a monitoring system to generate a targeted and personalized deep foundation pit monitoring threshold;

and 2, comparing the current situation of the deep foundation pit with an alarm threshold value based on the real-time information collected by the sensor, and automatically deciding an alert state. The alert states include red alert, yellow alert, and green normal states. The red warning indicates that various signs of overall instability of the corresponding foundation pit supporting structure appear, and emergency engineering measures are adopted for emergency rescue or personnel equipment are evacuated; the yellow alert indicates that some signs of potential and local instability have occurred corresponding to the foundation pit supporting structure, and preparation for starting a plan should be undertaken in addition to normal engineering measures; the green regular state represents generally implemented or operating as normal engineering measures.

6. The intelligent monitoring and early warning system for the deep foundation pit of the construction site based on the digital twin technology as claimed in claim 1, wherein the intelligent system for monitoring and early warning of the deep foundation pit displays the parameters and early warning information of each deep foundation pit and the monitored object through a graphical interface.

7. The intelligent monitoring and early warning system for the deep foundation pit of the construction site based on the digital twin technology as claimed in claim 1, wherein the intelligent system for monitoring and early warning of the deep foundation pit communicates with a specified mobile terminal through a communication module, and adjusts/releases the early warning state of the corresponding monitored object according to the control command sent by the mobile terminal.

Background

The excavation depth of the foundation pit in the engineering is more than 5 meters and also comprises 5 meters, which belongs to a deep foundation pit, but if the excavation depth is not more than 5 meters, the conditions of the surrounding environment and the geology are more complicated, which can also be called as the deep foundation pit. As deep foundation pit engineering not only need be relevant with the geological conditions, still have very big relation with other buildings adjacent with the foundation pit, when carrying out foundation pit construction, also need protect the safety of building and some facilities around, consequently, deep foundation pit monitoring is just very important, present deep foundation pit monitoring divide into manual monitoring and intelligent monitoring, traditional manual monitoring needs monitoring personnel to have very strong professional ability, and manual monitoring often has higher error rate, and automatic monitoring function often all is relative single, can only monitor displacement and settlement value of deep foundation pit universal structural component, and in order to ensure the monitoring effect, can often establish the lower with the threshold value, lead to the wrong report early warning to appear frequently, the fortune dimension cost has been increased. Therefore, a customized system is urgently needed at present, and a risk early warning system capable of predicting and accurately warning the state of the deep foundation pit at any time and any place according to the characteristics of different deep foundation pits is needed.

Disclosure of Invention

The invention aims to solve the technical problem that a digital twin technology platform is provided as a basis for overcoming the defects of the prior art, an integrated platform of the internet of things is used as a support, intelligent stress sensing equipment is combined with a networking monitoring platform to monitor the monitoring state of an on-site deep foundation pit supporting system in real time, and a risk early warning system which can know the supporting state of the deep foundation pit at any time and any place to predict and accurately monitor the supporting state of the deep foundation pit is provided.

In order to achieve the purpose, the invention provides the following technical scheme:

an intelligent monitoring and early warning system for a deep foundation pit in a construction site based on a digital twin technology comprises a monitoring point creating module, a monitoring point management module, an information acquisition module, a threshold management module and a monitoring and early warning module.

The monitoring point creating module is used for receiving basic information, environment information, soil property information and construction progress planning of any deep foundation pit in an externally-introduced construction area, analyzing the introduced data, analyzing all monitoring objects contained in the deep foundation pit, monitoring parameters and corresponding parameter thresholds of each monitoring object, creating a new monitoring point by combining the basic information and the analysis result of the deep foundation pit, and distributing unique monitoring point numbers and monitoring object numbers for the monitoring points and the monitoring objects.

The monitoring point management module is used for managing monitoring points and monitoring objects with different numbers, and the types of the monitoring objects comprise a supporting structure, underground water conditions, foundation pit bottom and surrounding soil bodies, surrounding buildings, surrounding pipelines and facilities.

The monitoring and early warning module receives displacement and settlement data sent by sensors installed on each monitored object, the displacement and settlement data comprise horizontal displacement and vertical displacement of a foundation pit, deep horizontal displacement of the foundation pit, tension of an anchor cable of the foundation pit, internal force of a foundation pit support pile structure and water level of the foundation pit, and the data of the monitored point and the monitored object are processed by combining environmental information.

And the threshold management module calls an early warning algorithm corresponding to the deep foundation pit to analyze and process the early warning algorithm according to the current progress, the displacement and settlement data sent by the current information acquisition module and the current threshold of the monitoring point and the monitoring object sent by the environment information and threshold management module.

Further, the basic information of the deep foundation pit comprises physical parameter information of a pit body of the deep foundation pit, relevant information of a fixed structural part and relevant information of contained monitoring equipment; the physical parameter information comprises an enclosing wall and a peripheral pipeline; the related information of the fixed structural part comprises an upright post, an anchor rod and a soil nail; the relevant information of the monitoring equipment comprises an inclinometer, a level gauge and a total station.

Further, the environmental information is divided into weather information and related information of other projects having disturbance influence on the deep foundation pit, including groundwater conditions, the bottom and surrounding soil of the foundation pit, surrounding buildings, surrounding pipelines and facilities.

Further, the soil property information includes the soil property of the deep foundation pit, the surrounding soil property and the soil property information changed in excavation.

Further, the process of the threshold management module calling the early warning algorithm corresponding to the deep foundation pit to analyze and process the displacement and settlement data according to the current progress and the displacement and settlement data sent by the current information acquisition module, and combining the environmental information and the current threshold of the monitoring point and the monitoring object sent by the threshold management module comprises the following steps:

step 1, measuring and collecting comprehensive element information of the deep foundation pit, wherein the information comprises foundation soil texture, excavation depth, foundation and importance of adjacent earth surface and underground building foundation and underground pipeline information. And inputting the information into a monitoring system to generate a targeted and personalized deep foundation pit monitoring threshold.

And 2, comparing the current situation of the deep foundation pit with an alarm threshold value based on the real-time information collected by the sensor, and automatically deciding an alert state. The alert states include red alert, yellow alert, and green normal states. The red warning indicates that various signs of overall instability of the corresponding foundation pit supporting structure appear, and emergency engineering measures are adopted for emergency rescue or personnel equipment are evacuated; the yellow alert indicates that some signs of potential and local instability have occurred corresponding to the foundation pit supporting structure, and preparation for starting a plan should be undertaken in addition to normal engineering measures; the green regular state represents generally implemented or operating as normal engineering measures.

Furthermore, the intelligent system for monitoring and early warning of the deep foundation pit displays the parameters and early warning information of each deep foundation pit and the monitored object through a graphical interface.

Furthermore, the intelligent system for monitoring and early warning of the deep foundation pit communicates with the appointed mobile terminal through the communication module, and adjusts/removes the early warning state of the corresponding monitored object according to the control instruction sent by the mobile terminal.

The invention has the beneficial effects that:

1. the digital twin technology is adopted to realize real-time supervision on the deep foundation pit in the project, and automatic early warning is carried out by monitoring the state change of a deep foundation pit supporting system, so that responsible persons can respond actively.

2. And (3) combining different characteristics of each deep foundation pit, and carrying out unified monitoring and management on different deep foundation pits by comparing the parameter changes of the input and collection monitoring points and the monitored objects.

3. The monitoring points and the monitoring objects are analyzed according to different characteristics of the deep foundation pit, and the threshold management algorithm of each monitoring point is obtained through analysis, so that the early warning value is customized according to the characteristics of the deep foundation pit, the problems of personnel professional limitation and high manual error rate caused by traditional manual monitoring are solved, and the problems of single intelligent monitoring and frequent early warning are solved.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.

Drawings

FIG. 1 is a schematic view of the working principle of the intelligent monitoring and early warning system for the deep foundation pit of the construction site based on the digital twin technology.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1, the embodiment provides an intelligent monitoring and early warning system for a deep foundation pit in a construction site based on a digital twin technology, which includes a monitoring point creating module, a monitoring point management module, an information acquisition module, a threshold management module, and a monitoring and early warning module.

Monitoring point creating module

The monitoring point creating module is used for receiving basic information, environmental information, soil property information and construction progress planning of any deep foundation pit in a construction area led in from the outside; the basic information of the deep foundation pit comprises physical parameter information of the pit body, relevant information of the contained fixed structural part and relevant information of the contained mobile equipment. Analyzing the basic information of the introduced deep foundation pit, analyzing to obtain all monitoring objects contained in the deep foundation pit, monitoring parameters and corresponding parameter thresholds of each monitoring object, creating a new monitoring point by combining the basic information and the analysis result of the deep foundation pit, and allocating unique monitoring point numbers and monitoring object numbers to the monitoring points and the monitoring objects.

Taking a subway deep foundation pit as an example, a plurality of deep foundation pits are dug simultaneously in subway construction, and each deep foundation pit has a certain difference. Firstly, splitting and analyzing the basic information of each introduced deep foundation pit, analyzing to obtain a monitoring object, a monitoring parameter and a corresponding parameter threshold value contained in each deep foundation pit, and allocating unique monitoring point numbers and monitoring object numbers for the monitoring points and the monitoring objects.

Second, monitoring point management module

The monitoring point management module is used for managing monitoring points and monitoring objects with different numbers.

The monitored objects include the following: supporting structure, groundwater conditions, foundation pit bottom and surrounding soil, surrounding buildings, surrounding pipelines and facilities.

Third, monitoring and early warning module

The monitoring and early warning module receives displacement and settlement data sent by sensors installed on each monitored object, the displacement and settlement data comprise horizontal displacement and vertical displacement of a foundation pit, deep horizontal displacement of the foundation pit, tension of an anchor cable of the foundation pit, internal force of a foundation pit support pile structure and water level of the foundation pit, and the data of the monitored point and the monitored object are processed by combining environmental information. The intelligent system for monitoring and early warning of the deep foundation pit displays parameters and early warning information of each deep foundation pit and a monitored object through a graphical interface, communicates with a specified mobile terminal through a communication module, and adjusts/removes the early warning state of the corresponding monitored object according to a control instruction sent by the mobile terminal.

For example, when a subway is constructed, a deep foundation pit A and a deep foundation pit B are excavated, all monitoring objects contained in the deep foundation pit A and the deep foundation pit B, and monitoring parameters and corresponding parameter thresholds of the monitoring objects of the deep foundation pit A and the deep foundation pit B are obtained through analysis of a monitoring point creation module and are respectively set as A1 and A2 … … An; b1 and B2 … … Bn. Supposing that data of an A4 monitoring object in the deep foundation pit A changes, the monitoring and early warning module processes the data of A4 in the deep foundation pit A by combining with environmental information, when real-time parameters obtained by analysis exceed a current displacement threshold value, the monitoring and early warning module pushes the alarm state and the alarm position of A4 in the deep foundation pit A to a mobile terminal or a web end, the mobile terminal or the web end can automatically refresh the data of A4 in the deep foundation pit A in real time, at the moment, a graphical interface can display the early warning state of the A deep foundation pit and the early warning information and the position of the A4 monitoring object, and sends related early warning information of A4 to a responsible person, and the responsible person carries out rectification according to the related information.

Fourth, threshold value management module

The threshold management module calls an early warning algorithm corresponding to the deep foundation pit to analyze and process the deep foundation pit according to the current progress, the displacement and settlement data sent by the current information acquisition module and the current threshold of the monitoring point and the monitoring object sent by the environment information and threshold management module, wherein the analyzing and processing process comprises the following steps:

step 1, measuring and collecting comprehensive element information of the deep foundation pit, wherein the information comprises foundation soil texture, excavation depth, foundation and importance of adjacent earth surface and underground building foundation and underground pipeline information. And inputting the information into a monitoring system to generate a targeted and personalized deep foundation pit monitoring threshold.

And 2, comparing the current situation of the deep foundation pit with an alarm threshold value based on the real-time information collected by the sensor, and automatically deciding an alert state. The alert states include red alert, yellow alert, and green normal states. The red warning indicates that various signs of overall instability of the corresponding foundation pit supporting structure appear, and emergency engineering measures are adopted for emergency rescue or personnel equipment are evacuated; the yellow alert indicates that some signs of potential and local instability have occurred corresponding to the foundation pit supporting structure, and preparation for starting a plan should be undertaken in addition to normal engineering measures; the green regular state represents generally implemented or operating as normal engineering measures.

For example, in building construction, when a deep foundation pit gradually stores water due to rainfall, the threshold management module automatically adjusts the early warning threshold in combination with the weather change condition in the environmental information, the information acquisition module acquires continuous rainfall within the following 3 days, and the possible situation that the water level line exceeds the early warning value exists, the monitoring early warning module adjusts the threshold information, and the threshold of the water level line is properly adjusted to enable managers to carry out danger avoiding arrangement in advance; conversely, if rainfall is brief, the water line threshold may not be changed.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.