A collision analysis method and system for pipe jacking construction based on BIM

Abstract

The present invention relates to the field of pipe jacking construction, and more specifically, to a collision analysis method and system for pipe jacking construction based on BIM. The method comprises: obtaining a BIM model of pipe jacking construction; dividing the construction area into sub-areas, and calculating the soil stability of the sub-areas; determining the difficulty of jacking in the sub-areas based on the soil stability and the obtained formation pressure; updating the repulsive field function in the artificial potential field, and searching for the best pipe jacking route in the BIM model through the updated artificial potential field. Through the technical solution of the present invention, the accuracy of the analysis results of pipe jacking construction can be improved, and the construction efficiency can be improved.

Description

Technical Field

[0001] The present invention relates to the field of pipe jacking construction, and more specifically, to a collision analysis method and system for pipe jacking construction based on BIM. Background Art

[0002] Building Information Modeling (BIM) technology is a revolutionary method for building design, construction and management. By creating and using digital information models, BIM technology can achieve integrated management of construction projects, improve design efficiency, reduce construction errors, and optimize facility operations.

[0003] Pipe jacking construction is a trenchless underground pipeline laying technology that uses pipe jacking equipment to push the pipeline into the ground section by section by excavating a small area on the surface to complete the laying of underground pipelines. This technology has significant advantages in urban underground pipeline construction, such as reducing the impact on traffic and the environment. However, collision problems during pipe jacking construction, such as conflicts between pipelines and existing underground facilities, are common technical difficulties in construction.

[0004] The existing Chinese patent application document with publication number CN115130349A discloses a collision analysis method for pipe jacking construction based on BIM. The method establishes a three-dimensional pipeline model of the surrounding underground pipelines within the pipe jacking construction range; determines the maximum impact cross section of the pipe jacking to be constructed within the pipe jacking construction range; determines the three-dimensional pipe jacking disturbance model of the pipe jacking to be constructed with the construction line of the pipe jacking to be constructed as the trajectory and the maximum impact cross section of the pipe jacking to be constructed as the section; determines the collision information of the three-dimensional pipe jacking disturbance model and the three-dimensional model of the surrounding underground pipelines within the pipe jacking construction range.

[0005] However, the above application documents are rather one-sided in their consideration of factors that may affect pipe jacking construction, and only consider the impact of underground pipelines on construction. This will lead to inaccurate analysis results of pipe jacking construction, resulting in long work cycles, large consumption of engineering resources, and other problems. Summary of the invention

[0006] In order to solve the problem of inaccurate analysis results of pipe jacking construction, the present invention proposes a collision analysis method and system for pipe jacking construction based on BIM.

[0007] In a first aspect, the present invention discloses a collision analysis method for pipe jacking construction based on BIM, comprising: obtaining a BIM model of pipe jacking construction; dividing a construction area into sub-areas, and calculating soil stability of the sub-areas; determining the difficulty of jacking in the sub-areas based on soil stability and the obtained formation pressure; updating a repulsive field function in an artificial potential field, and searching for an optimal pipe jacking route in the BIM model through the updated artificial potential field; wherein the repulsive field function in the artificial potential field satisfies the relationship:

[0008] ,in, Indicates sub-area The repulsive field function, represents the proportionality coefficient, represents a vector, Indicates sub-area The difficulty of jacking, Indicates sub-area The pipeline safety level, The coefficient that indicates the influence of jacking difficulty and pipeline safety level on jacking. Indicates sub-area location, Indicates the top pipe position.

[0009] By constructing a BIM model for pipe jacking construction, refined management of the construction area is achieved. The influence of formation pressure on the difficulty of pipe jacking construction is taken into account. Excessive formation pressure may cause soil instability, causing landslides or ground subsidence. Therefore, a reasonable assessment of formation pressure is crucial to determining the pipe jacking path and construction method. By updating the repulsive field function in the artificial potential field, the force of the pipe jacking machine underground can be simulated, thereby optimizing the pipe jacking route.

[0010] Preferably, the soil stability satisfies the relationship:

[0011] , Indicates sub-area soil stability, Indicates sub-area Medium soil type The proportion of represents the logarithmic function, Represents an exponential function.

[0012] It reflects the inherent stability of the soil. Gravel soils usually have a high stability index due to their good drainage and structural stability, while clay and sandy soils may have a low stability index due to variations in their particle characteristics and water content.

[0013] Preferably, the soil stability further comprises: respectively calculating the gravel ratio and the sand ratio in the sub-areas, and taking the ratio of the gravel ratio to the sand ratio as the soil stability.

[0014] Preferably, the soil stability also satisfies the relationship:

[0015] , Indicates sub-area soil stability, Indicates sub-area Medium soil type The proportion of Indicates sub-area The proportion of gravel in represents the logarithmic function, Represents an exponential function.

[0016] Taking the proportion of gravel with the highest stability index in the sub-area as soil stability can obtain more accurate soil stability test results.

[0017] Preferably, the jacking difficulty includes: calculating and normalizing the pressure difference between the formation pressure of the sub-area and the standard formation pressure, and mapping the ratio of the normalized pressure difference to the soil stability through negative correlation as the jacking difficulty of the sub-area.

[0018] Preferably, the jacking difficulty also includes: calculating the pressure difference between the formation pressure of the sub-area and the standard formation pressure and normalizing it; calculating the water content difference between the water content of the sub-area and the standard water content and normalizing it; multiplying the normalized pressure difference and the normalized water content difference, and mapping the ratio of the product to the soil stability through negative correlation as the jacking difficulty of the sub-area.

[0019] By calculating the difference between the formation pressure in the sub-area and the standard formation pressure, the effect of formation pressure on construction difficulty can be quantified. The normalization of soil moisture content helps to evaluate the effect of soil moisture on construction.

[0020] Preferably, searching for the best pipe jacking route in the BIM model through an artificial potential field includes: adding the updated repulsive field function to the original gravitational field function to obtain an artificial potential field function; and using a gradient descent algorithm on the artificial potential field function to find the best pipe jacking route in the BIM model.

[0021] In a second aspect, the present invention discloses a collision analysis system for pipe jacking construction based on BIM, comprising: a processor; and a memory, wherein the memory stores computer instructions, and when the computer instructions are executed by the processor, the system executes the above-mentioned collision analysis method for pipe jacking construction based on BIM.

[0022] Beneficial effects of the present invention:

[0023] 1. By obtaining the BIM model of the construction area and dividing it into sub-areas, the soil stability of each sub-area can be accurately calculated, which provides an important basis for evaluating the difficulty of pipe jacking construction. The calculation of soil stability not only takes into account the proportion of soil types, but also introduces the ratio of gravel to sand, as well as the concept of information entropy, which increases the scientificity and accuracy of the evaluation.

[0024] 2. By comprehensively considering factors such as soil stability, ground pressure and water content, the difficulty of jacking in the sub-area was determined, which helped the construction team to better plan the construction path and method. By updating the repulsive field function in the artificial potential field and combining it with the gravitational field function, the gradient descent algorithm was used to search for the best jacking route in the BIM model. This method can effectively avoid collisions with existing underground facilities and ensure construction safety.

[0025] 3. Predicting and avoiding potential risks during the construction process, through accurate collision analysis, can reduce accidents and losses during construction, and improve construction efficiency and quality. Real-time monitoring and dynamic adjustment during the construction process make construction management more intelligent and automated. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0027] Figure 1 It is a flow chart of a collision analysis method for pipe jacking construction based on BIM according to an embodiment of the present invention. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0029] It should be understood that when the terms "first", "second", etc. are used in the claims, descriptions, and drawings of the present invention, they are only used to distinguish different objects, rather than to describe a specific order. The terms "include" and "comprise" used in the description and claims of the present invention indicate the presence of the described features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their collections.

[0030] The present invention provides a collision analysis method for pipe jacking construction based on BIM. Figure 1 As shown, a collision analysis method for pipe jacking construction based on BIM includes steps S1 to S4, which are described in detail below.

[0031] S1, obtain the BIM model of pipe jacking construction.

[0032] In one embodiment, during the pipe jacking construction process, obtaining pipeline information and soil information of the construction area is crucial to ensure the smooth progress of the project. Pipeline information includes the location and type of underground pipelines, such as drainage pipes, cable pipes, etc. This information helps to understand the importance of pipelines and issues that need to be paid attention to during construction. Soil types include clay, sand or gravel, etc. Their different friction and stability have a direct impact on the difficulty of jacking. Soil moisture content is also an important factor. Wet soil may cause higher friction resistance and instability. In addition, formation pressure, including groundwater level, also has a significant impact on pipe jacking construction, and detailed investigation and evaluation are required before construction.

[0033] With this information, a detailed pipe jacking construction BIM model can be constructed, which can fully and accurately reflect all stages of the project construction and realize the monitoring and control of the construction process. The construction of the BIM model needs to follow the principles of consistency, rationality and accuracy, ensure the consistency between the model and the actual project, reflect the real information of the application object, and accurately set it according to the actual situation of the actual construction project design. Such a model not only helps with pre-construction planning and design, but also enables real-time monitoring and data analysis during the construction process, including construction progress, quality control, safety assessment, etc., providing all-round construction management and control.

[0034] S2, divide the construction area into sub-areas and calculate the soil stability of the sub-areas.

[0035] It should be noted that in pipe jacking construction, the influence of soil type on soil stability is crucial. For example, gravel soil usually has good drainage performance and structural stability due to its large particles, which makes it less likely to collapse during pipe jacking construction and provides a relatively stable environment for construction. In contrast, clay has high plasticity and plasticity due to its small and compact particles, which may cause it to exhibit greater friction during construction, but it may also cause stability problems, especially when the water content is high. Sandy soil has large particles and is not easy to combine. Although it has good drainage, its bearing capacity is relatively poor. It may encounter fluidity problems during construction, which requires a higher degree of soil compaction.

[0036] In one embodiment, the construction area is divided into a plurality of sub-areas, and the sub-areas have the same size.

[0037] Calculate soil stability. Soil stability satisfies the relationship:

[0038] , Indicates sub-area soil stability, Indicates sub-area Medium soil type The proportion of represents the logarithmic function, Represents an exponential function.

[0039] In one embodiment, soil stability further includes: calculating the gravel ratio and sand ratio in the sub-areas respectively, and taking the ratio of the gravel ratio to the sand ratio as the soil stability.

[0040] In one embodiment, soil stability also satisfies the relationship:

[0041] , Indicates sub-area soil stability, Indicates sub-area Medium soil type The proportion of Indicates sub-area The proportion of gravel in represents the logarithmic function, Represents an exponential function.

[0042] S3, determine the jacking difficulty of the sub-area based on soil stability and obtained formation pressure.

[0043] It should be noted that the formation pressure has a huge impact on pipe jacking construction. Excessive formation pressure will increase the resistance encountered by the pipe jacking machine during the jacking process, which may cause the pipe jacking machine to fail to advance smoothly, or require greater jacking force to push the pipe forward, thereby increasing the difficulty and cost of construction. Excessive formation pressure may cause the destruction of the soil structure and reduce the stability of the soil. In this case, the soil layer may not provide sufficient support, thereby increasing the risk of landslides or ground subsidence during construction. Uneven distribution of formation pressure may cause the pipe jacking machine to deviate during the jacking process, affecting the straightness and elevation control of the pipeline, and thus affecting the construction accuracy and the final pipeline quality.

[0044] In one embodiment, the jacking difficulty includes: calculating and normalizing the pressure difference between the formation pressure of the sub-area and the standard formation pressure, and mapping the ratio of the normalized pressure difference to the soil stability through negative correlation as the jacking difficulty of the sub-area.

[0045] In one embodiment, the influence of soil moisture content on pipe jacking construction is significant. When the soil moisture content is too high, the viscosity and friction of the soil will increase, which will not only lead to an increase in the jacking pressure, but also may lead to an increase in the friction between the pipeline and the surrounding soil, thereby increasing the difficulty of jacking. In addition, the soil with high moisture content has poor stability and may cause the flow or sliding of the soil during the construction process, increasing the risk of landslides and ground subsidence. For example, when long-distance pipe jacking construction is carried out in a collapsible loess area, due to the large pores in the loess structure itself and the presence of chemical components such as soluble salts, the collapsibility of the soil body will cause significant additional sinking after being affected by water, resulting in uneven settlement of the foundation, posing a threat to engineering safety.

[0046] The difficulty of jacking also includes: calculating the pressure difference between the formation pressure of the sub-area and the standard formation pressure and normalizing it; calculating the water content difference between the sub-area and the standard water content and normalizing it; multiplying the normalized pressure difference and the normalized water content difference, and mapping the ratio of the product to the soil stability through negative correlation as the difficulty of jacking in the sub-area.

[0047] S4, updating the repulsive field function in the artificial potential field, and searching for the best pipe jacking route in the BIM model through the updated artificial potential field.

[0048] In one embodiment, in pipe jacking construction, it is crucial to classify underground pipelines into safety levels to ensure construction safety and efficiency. Cable pipelines are usually given a higher safety level because they involve power transmission, which requires additional precautions to be taken during construction, such as maintaining a greater safety distance to avoid possible damage to cables during construction, thereby preventing serious safety accidents such as electrical short circuits and fires. These measures are crucial to ensuring public safety and the stable operation of the power system.

[0049] Drainage pipes, while also being secure and leakproof, may have a relatively low safety rating because they primarily involve the transport of water rather than the high-risk transmission of electricity. However, even drainage pipes require appropriate precautions to be taken during pipe jacking to ensure construction safety and the integrity of the pipes.

[0050] The repulsive field function in the artificial potential field is updated according to the starting point, end point, jacking difficulty of different sub-areas and the safety level of the pipeline.

[0051] The gravitational field function is:

[0052] ,in, Indicates sub-area The gravitational field function, represents the proportional gain coefficient, Represents a vector.

[0053] The repulsive field function satisfies the relationship:

[0054] ,in, Indicates sub-area The repulsive field function, represents the proportionality coefficient, represents a vector, Indicates sub-area The difficulty of jacking, Indicates sub-area The pipeline safety level, The coefficient that indicates the influence of jacking difficulty and pipeline safety level on jacking. Indicates sub-area location, Indicates the top pipe position.

[0055] Size and sub-region The Euclidean distance from the position to the top tube position is equal.

[0056] The updated repulsive field function is added to the original attractive field function to obtain the artificial potential field function. The gradient descent algorithm is used to find the best pipe jacking route in the BIM model.

[0057] An embodiment of the present invention further discloses a collision analysis system for pipe jacking construction based on BIM, including a processor and a memory, wherein the memory stores computer program instructions. When the computer program instructions are executed by the processor, a collision analysis method for pipe jacking construction based on BIM according to the present invention is implemented.

[0058] The above system also includes other components well known to those skilled in the art, such as a communication bus and a communication interface, and their configuration and functions are known in the art, so they will not be described in detail here.

[0059] In the present invention, the aforementioned memory may be any tangible medium containing or storing a program, which may be used by or in combination with an instruction execution system, apparatus or device. For example, a computer-readable storage medium may be any appropriate magnetic storage medium or magneto-optical storage medium, such as a resistive random access memory RRAM (Resistive Random Access Memory), a dynamic random access memory DRAM (Dynamic Random Access Memory), a static random access memory SRAM (Static Random-Access Memory), an enhanced dynamic random access memory EDRAM (Enhanced Dynamic Random Access Memory), a high-bandwidth memory HBM (High-Bandwidth Memory), a hybrid memory cube HMC (Hybrid Memory Cube), etc., or any other medium that can be used to store the required information and can be accessed by an application, a module or both. Any such computer storage medium may be part of a device or accessible or connectable to a device.

[0060] Although this specification has shown and described a number of embodiments of the present invention, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Those skilled in the art will conceive of many modifications, changes and alternatives without departing from the ideas and spirit of the present invention. It should be understood that in the practice of the present invention, various alternatives to the embodiments of the present invention described herein may be employed.

[0061] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A collision analysis method for pipe jacking construction based on BIM, characterized in that: include: Obtain the BIM model of pipe jacking construction; The construction area is divided into sub-areas, and the soil stability of the sub-areas is calculated; the soil stability satisfies the relationship: , Indicates sub-area soil stability, Indicates sub-area Medium soil type The proportion of represents the logarithmic function, represents the exponential function; Determine the difficulty of jacking in the sub-areas based on soil stability and obtained ground pressures; Update the repulsive field function in the artificial potential field, and search for the best pipe jacking route in the BIM model through the updated artificial potential field; Among them, the repulsive field function in the artificial potential field satisfies the relationship: ,in, Indicates sub-area The repulsive field function, represents the proportionality coefficient, represents a vector, Indicates sub-area The difficulty of jacking, Indicates sub-area Pipeline safety level, The coefficient that indicates the influence of jacking difficulty and pipeline safety level on jacking. Indicates sub-area location, Indicates the top pipe position.

2. A collision analysis method for pipe jacking construction based on BIM according to claim 1, characterized in that: The soil stability also includes: The gravel ratio and sand ratio in the sub-areas were calculated separately, and the ratio of gravel ratio to sand ratio was taken as soil stability.

3. The collision analysis method for pipe jacking construction based on BIM according to claim 1 is characterized in that: The soil stability also satisfies the relationship: , Indicates sub-area soil stability, Indicates sub-area Medium soil type The proportion of Indicates sub-area The proportion of gravel in represents the logarithmic function, Represents an exponential function.

4. The collision analysis method for pipe jacking construction based on BIM according to claim 1, characterized in that: The difficulty of jacking includes: The pressure difference between the formation pressure of the sub-area and the standard formation pressure is calculated and normalized, and the ratio of the normalized pressure difference to the soil stability is used as the jacking difficulty of the sub-area through negative correlation mapping.

5. The collision analysis method for pipe jacking construction based on BIM according to claim 1 is characterized in that: The difficulty of jacking also includes: Calculate the pressure difference between the formation pressure of the sub-area and the standard formation pressure and normalize it; Calculate the difference between the moisture content of the sub-area and the standard moisture content and normalize it; The normalized pressure difference and the normalized water content difference are multiplied, and the ratio of the product to the soil stability is mapped through a negative correlation to be used as the jacking difficulty of the sub-area.

6. The collision analysis method for pipe jacking construction based on BIM according to claim 1, characterized in that: The best pipe jacking route is searched in the BIM model through the artificial potential field, including: The artificial potential field function is obtained by adding the updated repulsive field function to the original gravitational field function; The gradient descent algorithm is used for the artificial potential field function to find the optimal pipe jacking route in the BIM model.

7. A collision analysis system for pipe jacking construction based on BIM, characterized in that: include: Processor; and A memory storing computer instructions, wherein when the computer instructions are executed by a processor, the system executes a collision analysis method for pipe jacking construction based on BIM according to any one of claims 1 to 6.

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