Ultra-deep foundation pit supporting system selecting and monitoring method based on digital technology

Abstract

The invention discloses an ultra-deep foundation pit supporting system selecting and monitoring method based on the digital technology, and belongs to the technical field of building construction.By inputting the specification, the geological condition, the hydrological condition and the load condition of a foundation pit into a foundation pit supporting system, a supporting system result meeting the specification is calculated and output; a complete three-dimensional foundation pit supporting system model is rapidly created in combination with Dynamo and Revit, a supporting structure construction drawing is output, and a material list and a calculation report of a supporting structure are generated; then, construction is conducted; the foundation pit supporting system model is imported into the monitoring platform, monitoring data of the foundation pit supporting system are obtained and mapped into the foundation pit supporting system model, and the current foundation pit supporting deformation condition can be visually analyzed; a data resource library is established in the monitoring platform, the monitoring data is compared with the data resource library, and the future foundation pit deformation condition is predicted; and the monitoring platform is connected with an alarm device, and when the monitoring data reaches a threshold value or the predicted deformation condition reaches the threshold value, the alarm device starts to report early warning information.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, and particularly relates to a method for selecting and monitoring a super-deep foundation pit support system based on digital technology. Background Technique

[0002] The statements in this part only provide background technical information related to the present invention, and do not necessarily constitute prior art.

[0003] In recent years, with the continuous advancement of the urbanization process, the number of construction engineering projects has gradually increased, and the number of super-deep and complex foundation pit engineering projects has also increased accordingly.

[0004] The deep foundation pit support technology for building engineering is a very important construction technology in the construction of building foundation engineering. However, the support system for super-deep and complex foundation pits is a temporary structure with a small safety reserve and great risks. At the same time, it has characteristics such as strong regionality, strong individuality, strong spatio-temporality, and strong complexity, which bring great challenges to the construction safety and quality control on site. Digital technology is a general technology characterized by "three modernizations" (digitization, networking, and intelligence) and "three calculations" (data, algorithms, and computing power), and is the basic support technology for green digital construction.

[0005] How to use digital technology to select a suitable foundation pit support system and how to monitor and give early warnings to the foundation pit support system of the project under construction directly affect the safety and stability of the foundation engineering construction, as well as the overall progress and quality of the entire project construction. Summary of the Invention

[0006] In view of the above problems, the present invention provides a method for selecting and monitoring a super-deep foundation pit support system based on digital technology, which can select a foundation pit support system for foundation pit projects in different environments, monitor the foundation pit support system of the project under construction, and report early warning information in a timely manner.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] A method for selecting and monitoring a super-deep foundation pit support system based on digital technology includes the following steps:

[0009] Step 1: Input the specifications, geological conditions, hydrological conditions, and load conditions of the foundation pit into the foundation pit support system, calculate and output the support system results that meet the specifications; then quickly create a complete three-dimensional foundation pit support system model in combination with Dynamo and Revit, output the plan view, sectional view, and three-dimensional view of the support structure, and be able to generate a material list and calculation report of the support structure; and then carry out construction;

[0010] Step 2: Import the generated foundation pit support system model into the monitoring platform to obtain the monitoring data of the actual construction foundation pit support system. Map the monitoring data to the foundation pit support system model for intuitive analysis of the current deformation of the foundation pit support. Establish a data resource library in the monitoring platform, compare the monitoring data with the data resource library, and predict the future deformation of the foundation pit. The monitoring platform is connected to an alarm device. When the monitoring data reaches the threshold or the predicted deformation situation reaches the threshold, the monitoring platform issues a warning control instruction, and the alarm device starts to report the warning information.

[0011] Preferably, the foundation pit support system is built-in with a support member family library and an algorithm database for support members. The support member family library includes all members of the support structure type. The algorithm database extracts the design calculation rules of the support structure according to the provisions of national standards and design requirements, as well as the applicable conditions of different foundation pit support structures under different geological conditions, different depths, and different load conditions, and forms rules embedded in the system.

[0012] Preferably, the results output by the foundation pit support system include the foundation pit coordinate information and the corresponding support member coordinate information.

[0013] Preferably, Step 1 includes the following sub-steps:

[0014] S11: Construct a foundation pit support system;

[0015] S12: Input the specifications, geological conditions, hydrological conditions, and load conditions of the foundation pit into the foundation pit support system and output the calculation results;

[0016] S13: Dynamo converts the output calculation results into coordinate data recognizable by Revit software, creates a foundation pit model, simultaneously reads the model files of the corresponding support members, and places the corresponding model files at the corresponding coordinates according to the output coordinate information; quickly create a complete three-dimensional foundation pit support system model.

[0017] Preferably, Step 1 also includes the following sub-steps:

[0018] S14: Select the model generated by Revit through Dynamo, modify the parameters in Dynamo, and customize the nodes to adjust the support structure in the model; combine with Python scripts to add materials that meet the construction requirements to the support structure;

[0019] S15: Check the three-dimensional foundation pit support system model to ensure that it meets the design requirements; if it does not meet the requirements, continue to modify the parameters in Dynamo, customize the nodes to adjust the support structure, and combine with Python scripts to replace the materials of the support structure until it meets the design requirements.

[0020] Preferably, Step 1 also includes the following sub-steps:

[0021] S16. Obtain the coordinate, range, elevation and other information of the actual environmental characteristics around the foundation pit under construction, generate a foundation pit environment model, combine it with the generated foundation pit support system model, and analyze whether the current form and size of the support components meet the requirements; if not, corresponding adjustments are also required.

[0022] S17. After the foundation pit support system model meets the above requirements, determine the three-dimensional model of the foundation pit support, and at the same time output the plan view, sectional view and three-dimensional view of the support structure of the foundation pit, and generate a material list and a calculation report of the support structure; then prepare for construction.

[0023] Preferably, step two includes the following sub-steps:

[0024] S21. Establish a database of data resources of foundation pit support deformation cases in past foundation pit construction on the monitoring platform, which is used to compare and analyze with the monitoring data of the foundation pit support of the current project under construction, and predict whether the future deformation of the foundation pit support of the project under construction will reach the threshold.

[0025] S22. During the process of constructing the foundation pit support system, arrange various sensors such as stress sensors, strain sensors, settlement sensors, pore water pressure sensors, temperature sensors, etc. at corresponding positions for monitoring; through the monitoring of a variety of multiple sensors arranged on site, data collection is carried out from different angles; the positions of these sensors are correspondingly set with mapping points on the foundation pit support system model; these sensors are connected to the monitoring platform through communication to achieve data transmission.

[0026] Preferably, the data in the database includes the construction information conditions, construction environment conditions, and foundation pit support theory of past cases, and also includes the time-varying characteristics of foundation pit excavation in past cases, as well as the time-varying characteristics and strength changes of the support structure during the subsequent construction process, which are used as the basic data for judging the stability of the foundation pit.

[0027] Preferably, step two also includes the following sub-steps:

[0028] S23. Through the mapping of on-site monitoring data at each point on the foundation pit support system model, visually analyze whether the current foundation pit support has reached the threshold and whether there is a risk of deformation; when there is a risk of deformation, the monitoring platform issues a warning control instruction, and the alarm device starts to report the warning information.

[0029] Preferably, step two also includes the following sub-steps:

[0030] S24. Compare and analyze the monitoring data of the foundation pit support of the current under-construction project with the data in the data resource library to predict whether the future deformation of the foundation pit support of the under-construction project will reach the threshold. When it is predicted that the threshold will be reached, that is, when there is a deformation risk in the future, the monitoring platform issues a warning control instruction, and the alarm device starts to report the warning information.

[0031] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0032] In the present invention, the specifications, geological conditions, hydrological conditions, and load conditions of the foundation pit are input into the foundation pit support system, and the support system results that meet the specifications are calculated and output. Combined with Dynamo and Revit, a complete three-dimensional foundation pit support system model is quickly created, enabling the selection of foundation pit support systems for foundation pit projects in different environments. By importing the foundation pit support system model into the monitoring platform, the monitoring data of the foundation pit support system is obtained and mapped to the foundation pit support system model, enabling intuitive analysis of the current deformation of the foundation pit support. A data resource library is established in the monitoring platform, and the monitoring data is compared with the data resource library to facilitate the prediction of future foundation pit deformation. The monitoring platform is connected to the alarm device. When the monitoring data reaches the threshold or the predicted deformation reaches the threshold, the alarm device can start to report the warning information. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings forming a part of this specification are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0034] Figure 1 It is a schematic flow chart of the selection of the foundation pit support system according to the embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs.

[0036] The following combines the accompanying drawings to describe the present invention in detail. A method for selecting and monitoring a super-deep foundation pit support system based on digital technology disclosed in this embodiment includes the following steps:

[0037] Step 1: Input the specifications of the foundation pit (information such as design boundary range, elevation, slope, etc.), geological conditions, hydrological conditions, and load conditions into the foundation pit support system, calculate and output the support system results that meet the specifications; then, in combination with Dynamo and Revit, quickly create a complete 3D foundation pit support system model, output the plan view, sectional view, and 3D solid view of the support structure, and be able to generate a material list and calculation report of the support structure; then proceed with the construction.

[0038] Specifically, the foundation pit support system has a built-in support member family library and an algorithm database for support members; among them, the support member family library includes all components of the support structure type, such as steel sheet piles, cast-in-place piles, SMW method piles, wales, cross braces, steel pipes, columns, and other accessory components.

[0039] The algorithm database can extract the design calculation rules of the support structure, the applicable conditions of different foundation pit support structures under different geological conditions, different depths, and different load conditions according to the provisions of national standards and design requirements, and form rules embedded in the system. In this embodiment, national standards can be adopted such as: "Code for Design of Building Foundation" GB 50007—2011, "Technical Specification for Building Foundation Pit Support" JGJ120 - 2012, etc.

[0040] As Figure 1 shown, input the specifications of the foundation pit, geological conditions, hydrological conditions, and load conditions into the foundation pit support system. The system selects different support members according to the specifications, geological conditions, hydrological conditions, and load conditions of the foundation pit, and at the same time determines the support system that meets the specification requirements according to the rules set in the algorithm database, and outputs the calculation results including the foundation pit coordinate information and the corresponding support member coordinate information.

[0041] Dynamo and Revit can quickly create a 3D foundation pit support system. Specifically, Dynamo is a visual programming software that runs on the Revit software platform and serves parameterized design (when encountering complex problems that cannot be handled by Dynamo nodes, Python can be used to solve them); Dynamo converts the coordinate results output by the foundation pit support system into coordinate data recognizable by the Revit software, creates a foundation pit model, and at the same time reads the model files of the corresponding support members, and places the corresponding model files on the corresponding coordinates according to the output coordinate information. Thus, a complete 3D foundation pit support system model is quickly created, and then the plan view, sectional view, and 3D solid view of the support structure of the foundation pit are output, and a material list and calculation report of the support structure can be generated.

[0042] It is understandable that the model file of the support component family library is created in the Revit software in advance. The size, specification, style and other features of the model file can be parameterized through Dynamo, and different parameter information can be input to generate a model file of corresponding specifications.

[0043] Furthermore, after creating a complete three-dimensional foundation pit support system model, you can select the model generated by Revit through Dynamo, and then modify the parameters and custom nodes in Dynamo to adjust the support structure in the model; combined with Python scripts, add materials that meet construction requirements to the support structure.

[0044] Furthermore, after creating a complete three-dimensional foundation pit support system model, it is necessary to check the support structure to ensure that it meets the design requirements; if it does not meet the requirements, it is necessary to continue to modify the parameters in Dynamo, customize the nodes to adjust the support structure, and combine Python scripts to change the material of the support structure until it meets the design requirements.

[0045] Furthermore, the above generated foundation pit support system model does not take into account the actual environment around the foundation pit of the project under construction, so it is necessary to build an actual foundation pit environment model and import it into the above generated foundation pit support system model, and then conduct comprehensive analysis and adjustment. The foundation pit environment model is used to simulate the complex geology, water level and other complex environments around the current project under construction.

[0046] Take a certain project under construction as an example. The project has the following characteristics:

[0047] 1. There are subway stations and subway running passages around the buildings currently under construction;

[0048] 2. There are normal roads around the buildings of the current construction project;

[0049] 3. There are completed high-rise buildings around the buildings currently under construction;

[0050] 4. There is no planned land for construction at the edge of the red line of the building currently under construction;

[0051] 5. There are mountains near the buildings of the current construction project, which have abundant groundwater and the groundwater level changes during the flood season.

[0052] Obtain the coordinates, range, elevation and other information of the above features, generate a foundation pit environment model, and combine it with the generated foundation pit support system model to analyze whether the current support component form and size meet the requirements; if not, corresponding adjustments are also required.

[0053] Finally, after the foundation pit support system model meets the above requirements, determine the 3D model of the foundation pit support, and at the same time output the plan view, sectional view and 3D solid view of the support structure of the foundation pit, and generate the material list and calculation report of the support structure; then prepare for construction.

[0054] Specifically, Step 1 has the following sub-steps:

[0055] S11. Construct a foundation pit support system including a support member library and an algorithm database of support members;

[0056] S12. Input the specifications, geological conditions, hydrological conditions, and load conditions of the foundation pit into the foundation pit support system, and output the calculation results including the foundation pit coordinate information and the corresponding support member coordinate information;

[0057] S13. Dynamo converts the coordinate results output by the foundation pit support system into coordinate data recognizable by Revit software, creates a foundation pit model, reads the model files of the corresponding support members at the same time, and places the corresponding model files on the corresponding coordinates according to the output coordinate information; quickly create a complete 3D foundation pit support system model;

[0058] S14. Select the model generated by Revit through Dynamo, modify the parameters in Dynamo, and customize the nodes to adjust the support structure in the model; combine with Python scripts to add materials that meet the construction requirements to the support structure;

[0059] S15. Check the 3D foundation pit support system model to ensure that it meets the design requirements; if it does not meet the requirements, continue to modify the parameters in Dynamo, customize the nodes to adjust the support structure, and combine with Python scripts to replace the materials of the support structure until it meets the design requirements;

[0060] S16. Obtain the coordinates, scope, elevation and other information of the actual surrounding environment characteristics of the foundation pit of the project under construction, generate a foundation pit environment model, and combine it with the generated foundation pit support system model to analyze whether the current support member form and size can meet the requirements; if it does not meet the requirements, corresponding adjustments are also required;

[0061] S17. When the foundation pit support system model meets the above requirements, determine the 3D model of the foundation pit support, and at the same time output the plan view, sectional view and 3D solid view of the support structure of the foundation pit, and generate the material list and calculation report of the support structure; prepare for construction.

[0062] Step 2: Import the foundation pit support system model generated in Step 1 into the monitoring platform to obtain the monitoring data of the actual foundation pit support system during construction. Map the monitoring data to the foundation pit support system model to facilitate the intuitive analysis of the current deformation of the foundation pit support. At the same time, a data resource library is established in the monitoring platform. Compare the monitoring data with the data resource library to predict the future deformation of the foundation pit. The monitoring platform is connected to an alarm device. When the monitoring data reaches the threshold or the predicted deformation reaches the threshold, the monitoring platform issues a warning control instruction, and the alarm device starts to report the warning information.

[0063] By monitoring and predicting the deformation of the foundation pit support, safety warnings and emergency guidance are carried out to ensure the personal safety of the construction personnel on the project site and the pedestrians around. In this embodiment, the monitoring platform is a computer.

[0064] Specifically, Step 2 has the following sub-steps:

[0065] S21. Establish a data resource library of foundation pit support deformation cases in past foundation pit construction on the monitoring platform. The data includes the construction information conditions, construction environment conditions, and foundation pit support theories of past cases, as well as the time-varying characteristics of foundation pit excavation in past cases, and the time-varying characteristics and strength changes of the support structure during subsequent construction, as the basic data for judging the stability of the foundation pit. The data resource library is used to compare and analyze with the monitoring data of the foundation pit support of the current project under construction to predict whether the future deformation of the foundation pit support of the project under construction will reach the threshold.

[0066] S22. During the construction of the foundation pit support system, arrange various sensors such as stress sensors, strain sensors, settlement sensors, pore water pressure sensors, and temperature sensors at corresponding positions for monitoring. Through the monitoring of various sensors arranged on-site, data collection is carried out from different angles. Mapping points corresponding to the positions of these sensors are set on the foundation pit support system model. These sensors are connected to the monitoring platform through communication to achieve data transmission.

[0067] S23. Intuitively analyze whether the current foundation pit support reaches the threshold and whether there is a deformation risk through the mapping of on-site monitoring data at each point on the foundation pit support system model. When a deformation risk occurs, the monitoring platform issues a warning control instruction, and the alarm device starts to report the warning information.

[0068] S24. Compare and analyze the data resource library with the monitoring data of the foundation pit support of the current project under construction to predict whether the future deformation of the foundation pit support of the project under construction will reach the threshold. When it is predicted that the threshold will be reached, that is, when there is a deformation risk in the future, the monitoring platform issues a warning control instruction, and the alarm device starts to report the warning information.

[0069] Although the specific implementation manners of the present invention have been described above in conjunction with the accompanying drawings, they are not limitations on the protection scope of the present invention. Those skilled in the art should understand that, based on the technical solutions of the present invention, various modifications or deformations that can be made by those skilled in the art without creative efforts are still within the protection scope of the present invention.

Claims

1. A method for selecting and monitoring a super-deep foundation pit support system based on digital technology, characterized in that, It includes the following steps: Step 1: Input the specifications, geological conditions, hydrological conditions, and load conditions of the foundation pit into the foundation pit support system, calculate and output the support system results that meet the specifications; then, quickly create a complete 3D foundation pit support system model by combining Dynamo and Revit, output the plan view, sectional view, and 3D solid view of the support structure, and be able to generate the material list and calculation report of the support structure; Then carry out the construction; Step 2: Import the generated foundation pit support system model into the monitoring platform to obtain the monitoring data of the actual construction foundation pit support system, map the monitoring data to the foundation pit support system model for intuitive analysis of the current deformation situation of the foundation pit support; establish a data resource library in the monitoring platform, compare the monitoring data with the data resource library to predict the future deformation situation of the foundation pit; the monitoring platform is connected to the alarm device. When the monitoring data reaches the threshold or the predicted deformation situation reaches the threshold, the monitoring platform issues a warning control instruction, and the alarm device starts to report the warning information.

2. The method for selecting and monitoring a super-deep foundation pit support system based on digital technology according to claim 1, characterized in that The foundation pit support system has a built-in support component family library and an algorithm database for support components; the support component family library includes all components of the support structure type; the algorithm database extracts the design calculation rules of the support structure, the applicable conditions of different foundation pit support structures under different geological conditions, different depths, and different load conditions according to the provisions of national standards and design requirements, and forms rules embedded in the system.

3. The method for selecting and monitoring a super-deep foundation pit support system based on digital technology according to claim 1, characterized in that, The results output by the foundation pit support system include the foundation pit coordinate information and the corresponding support component coordinate information.

4. The method for selecting and monitoring a super-deep foundation pit support system based on digital technology according to claim 1, characterized in that, Step 1 includes the following sub-steps: S11. Construct the foundation pit support system; S12. Input the specifications, geological conditions, hydrological conditions, and load conditions of the foundation pit into the foundation pit support system and output the calculation results; S13. Dynamo converts the output calculation results into coordinate data recognizable by the Revit software, creates a foundation pit model, reads the model files of the corresponding support components at the same time, and places the corresponding model files at the corresponding coordinates according to the output coordinate information; Quickly create a complete 3D foundation pit support system model.

5. The method for selecting and monitoring a super-deep foundation pit support system based on digital technology according to claim 1, characterized in that, Step 1 also includes the following sub-steps: S14. Select the model generated by Revit through Dynamo, modify the parameters in Dynamo, and customize the nodes to adjust the support structure in the model; combine with the Python script to add materials that meet the construction requirements to the support structure; S15. Check the 3D foundation pit support system model to ensure that it meets the design requirements; if it does not meet the requirements, continue to modify the parameters in Dynamo, customize the nodes to adjust the support structure, and combine with the Python script to replace the materials of the support structure until it meets the design requirements.

6. The method for selecting and monitoring a super-deep foundation pit support system based on digital technology according to claim 1, characterized in that, Step 1 also includes the following sub-steps: S16. Obtain the coordinates, scope, and elevation information of the actual surrounding environment characteristics of the foundation pit under construction, generate a foundation pit environment model, combine it with the generated foundation pit support system model, and analyze whether the current support component forms and dimensions can meet the requirements; if they do not meet the requirements, corresponding adjustments are also required; S17. After the foundation pit support system model meets the above requirements, determine the three-dimensional model of the foundation pit support, and at the same time output the plan view, sectional view and three-dimensional view of the support structure of the foundation pit, and generate a material list and a calculation report of the support structure; then prepare for construction.

7. The method for selecting and monitoring a super-deep foundation pit support system based on digital technology according to claim 1, characterized in that Step 2 includes the following sub-steps: S21. Establish a database of data resources for foundation pit support deformation cases in past foundation pit construction on the monitoring platform, which is used to compare and analyze with the monitoring data of the foundation pit support of the current project under construction, and predict whether the future deformation of the foundation pit support of the project under construction will reach the threshold. S22. During the construction of the foundation pit support system, arrange various sensors such as stress sensors, strain sensors, settlement sensors, pore water pressure sensors, temperature sensors, etc. at corresponding positions for monitoring; through the monitoring of various sensors arranged on-site, data collection is carried out from different angles; the positions of these sensors are correspondingly set with mapping points on the foundation pit support system model; these sensors are connected through communication to the monitoring platform to achieve data transmission.

8. The method for selecting and monitoring a super-deep foundation pit support system based on digital technology according to claim 7, characterized in that, The data in the database of data resources include the construction information conditions, construction environment conditions, and foundation pit support theory of past cases, as well as the time-varying characteristics of foundation pit excavation in past cases, and the time-varying characteristics and strength changes of the support structure during subsequent construction, which are used as basic data for judging the stability of the foundation pit.

9. The method for selecting and monitoring a super-deep foundation pit support system based on digital technology according to claim 1, characterized in that, Step 2 also includes the following sub-steps: S23. Intuitively analyze whether the current foundation pit support has reached the threshold and whether there is a deformation risk through the mapping of each point on the foundation pit support system model by on-site monitoring data. When there is a deformation risk, the monitoring platform issues a warning control instruction, and the alarm device starts to report the warning information.

10. The method for selecting and monitoring a super-deep foundation pit support system based on digital technology according to claim 1, characterized in that, Step 2 also includes the following sub-steps: S24. Compare and analyze the monitoring data of the foundation pit support of the current project under construction with the database of data resources, and predict whether the future deformation of the foundation pit support of the project under construction will reach the threshold; when it is predicted that the threshold will be reached, that is, when there is a deformation risk in the future, the monitoring platform issues a warning control instruction, and the alarm device starts to report the warning information.

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