Underground comprehensive pipeline direct-buried construction method in complex environment based on BIM

Abstract

The application discloses a kind of underground comprehensive pipeline direct-buried construction methods under complex environment based on BIM, including steps: obtaining existing pipeline information in construction area, surrounding building information and proposed comprehensive pipeline design information;According to the existing pipeline information, the surrounding building information and the proposed comprehensive pipeline design information establish underground comprehensive pipeline BIM model;Space conflict detection is carried out based on the underground comprehensive pipeline BIM model, and the position of proposed comprehensive pipeline is adjusted and optimized according to the detection result, to obtain target pipeline model;AR lofting picture is generated based on the target pipeline model, and the spatial position information of target pipeline model is fused and displayed with construction site scene by AR technology, to assist construction personnel to carry out pipeline lofting positioning;According to the fusion display result, underground comprehensive pipeline lofting is carried out, and trench excavation, pipeline laying and auxiliary structure construction are completed, and the underground pipeline construction precision is improved by the above method.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a method for direct burial of underground integrated pipelines in complex environments based on BIM. Background Technology

[0002] In the process of urban underground space development and municipal engineering construction, underground integrated pipelines are complex in type and dense in spatial distribution. New pipelines often need to be laid around existing pipelines and existing buildings.

[0003] Because underground pipelines are highly concealed, have complex spatial relationships, and the construction environment cannot be directly observed, traditional construction processes usually rely on two-dimensional design drawings or experience for pipeline layout and construction guidance.

[0004] However, in complex underground environments, relying solely on two-dimensional drawings for construction makes it difficult to intuitively reflect the three-dimensional spatial relationships between various pipelines and between pipelines and surrounding structures. This can easily lead to spatial judgment errors during construction, resulting in pipeline conflicts or insufficient construction avoidance.

[0005] On the other hand, while existing BIM-based 3D modeling technology can visualize underground pipelines and support a certain degree of conflict detection and optimization analysis, this type of information usually remains in the design stage before construction. It is difficult to achieve effective alignment and real-time mapping with the actual spatial environment on the construction site, and construction personnel still need to rely on experience to make layout judgments on site.

[0006] In addition, the location of existing underground pipelines is often uncertain during the actual construction process. Even with optimization during the design phase, construction deviations may still accumulate due to on-site errors, which in turn affect construction safety and accuracy.

[0007] Therefore, how to effectively integrate BIM models with construction site space in complex underground environments, and provide intuitive and real-time spatial location assistance and verification methods during construction to improve construction layout accuracy and construction safety, has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0008] The purpose of this invention is to overcome the shortcomings of the prior art and provide a BIM-based method for direct burial of underground integrated pipelines in complex environments, so as to solve the problems of low construction accuracy, difficulty in identifying conflicts, and lack of visualization control of the entire construction process in the prior art.

[0009] To achieve the above objectives, the technical solution adopted in this invention is a BIM-based method for direct burial of underground integrated pipelines in complex environments, comprising the following steps: Step 1: Obtain information on existing pipelines, surrounding buildings, and the proposed integrated pipeline design within the construction area; Step 2: Establish an underground integrated pipeline BIM model based on the existing pipeline information, the surrounding building information, and the proposed integrated pipeline design information; Step 3: Based on the underground integrated pipeline BIM model, perform spatial conflict detection, and adjust and optimize the location of the proposed integrated pipeline according to the detection results to obtain the target pipeline model; Step 4: Generate an AR layout image based on the target pipeline model, and use AR technology to fuse the spatial location information of the target pipeline model with the construction site scene to assist construction personnel in pipeline layout and positioning; Step 5: Based on the fusion display results, lay out the underground integrated pipelines and complete the trench excavation, pipeline laying and ancillary structure construction.

[0010] The further improvement of the BIM-based direct burial construction method for underground integrated pipelines in complex environments is that, when performing step 2 above, modeling is carried out in the order from top to bottom and from large pipes to small pipes. Among them, rainwater inlet connection pipes with gravity flow properties are modeled in priority over other municipal pipelines during the modeling process.

[0011] The further improvement of the BIM-based direct burial construction method for underground integrated pipelines in complex environments is that, when performing step 3 above, a multi-dimensional constraint analysis is conducted on the spatial relationship between the proposed integrated pipeline and existing pipelines, as well as between the proposed integrated pipeline and surrounding buildings, based on pipeline spacing constraints, burial depth constraints, and intersection avoidance rules. Conflict areas are eliminated by iteratively adjusting the spatial path parameters of the proposed integrated pipeline.

[0012] The further improvement of the BIM-based direct burial construction method for underground integrated pipelines in complex environments is that, when performing step 4 above, the three-dimensional spatial coordinate data in the target pipeline model is converted into layout control point data under the construction coordinate system, and a mapping relationship is established between the BIM model coordinate system and the geographical coordinate system of the construction site, so as to achieve spatial alignment between the virtual model and the real scene.

[0013] The further improvement of the BIM-based direct burial construction method for underground integrated pipelines in complex environments is that, when performing step 5 above, the AR-overlayed construction site image is spatially compared with the excavation range determined by the layout; it is confirmed whether there is any proximity risk between the construction excavation range and existing pipelines and surrounding buildings due to construction layout deviations or site environment errors; and areas with proximity risks are highlighted to guide construction personnel to avoid existing pipelines and buildings during the excavation process.

[0014] The further improvement of the BIM-based direct burial construction method for underground integrated pipelines in complex environments is that, after completing step 5 above, AR equipment is used to spatially overlay the actual pipeline location after completion with the target pipeline model; by comparing the position between the actual construction results and the target pipeline model, it is determined whether the construction completion results meet the design requirements, and areas where the deviation exceeds the preset allowable range are visually marked.

[0015] Compared with the prior art, the advantages of the present invention are: 1. By constructing a BIM model of underground integrated pipelines and conducting spatial conflict detection and optimization adjustments on this basis, the spatial relationship between the proposed integrated pipelines and existing pipelines and surrounding buildings can be uniformly coordinated during the design phase, thereby reducing pipeline conflicts and spatial interference issues and improving the rationality and design reliability of the underground integrated pipeline layout.

[0016] 2. By introducing the target pipeline model into the AR layout system, the spatial integration display of the construction site and the BIM model is realized, enabling construction personnel to intuitively obtain the spatial location information of the proposed pipeline, thereby improving the accuracy of construction layout; at the same time, during the construction process, the AR overlay display provides visual prompts for construction deviations, and after the construction is completed, the deviation of the construction results is identified through AR overlay comparison, thereby improving the control capability of the construction process and the intuitiveness and accuracy of construction quality acceptance. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall process of the present invention.

[0019] Figure 2 This is a schematic diagram of the conflict detection and target pipeline model optimization process of the present invention. Detailed Implementation

[0020] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0021] The following detailed description of the BIM-based direct burial construction method for underground integrated pipelines in complex environments, in conjunction with the accompanying drawings and specific embodiments, further illustrates this invention.

[0022] Please see Figures 1-2 As shown, the BIM-based direct burial construction method for underground integrated pipelines in complex environments includes the following steps: Step 1: Obtain information on existing pipelines, surrounding buildings, and the proposed integrated pipeline design within the construction area; Step 2: Establish an underground integrated pipeline BIM model based on the existing pipeline information, the surrounding building information, and the design information of the proposed integrated pipeline; Step 3: Based on the underground integrated pipeline BIM model, spatial conflict detection is carried out, and the location of the proposed integrated pipeline is adjusted and optimized according to the detection results to obtain the target pipeline model; Step 4: Generate an AR layout image based on the target pipeline model, and use AR technology to integrate the spatial location information of the target pipeline model with the construction site scene to assist construction personnel in pipeline layout and positioning; Step 5: Based on the fusion display results, lay out the underground integrated pipelines and complete the trench excavation, pipeline laying and ancillary structure construction.

[0023] Preferably, when performing step 2 above, the modeling is carried out in the order from top to bottom and from large pipe to small pipe. Among them, the rainwater inlet connection pipe with gravity flow properties is modeled in priority over other municipal pipelines during the modeling process.

[0024] Specifically, during the modeling process, the existing pipeline data is first organized by category, and then entered into the BIM model one by one. The pipeline route, elevation and connection relationship are marked in the model so that different pipelines can be displayed in layers in the same model. For gravity flow pipelines, the upstream and downstream relationship is determined first according to the design elevation during modeling, and then the slope is checked according to the ground elevation to avoid reverse slope.

[0025] By organizing existing pipeline data by category and entering it into the BIM model line by line, different types of pipelines can be represented in a layered manner, thereby improving the clarity of model information. By marking pipeline routes, elevations, and connection relationships, the spatial relationships of pipelines are made clearer, reducing the workload of subsequent conflict judgment. By determining the upstream and downstream relationships of gravity flow pipelines and checking the slope in conjunction with ground elevation, reverse slope problems can be avoided, improving the rationality of modeling and the feasibility of construction.

[0026] Specifically, when there are multiple types of pipelines in the same construction area, rainwater and drainage pipelines should be modeled first, and then other power and communication pipelines should be added.

[0027] By prioritizing the modeling of rainwater and drainage pipelines within the same construction area, and then supplementing them with power and communication pipelines, the spatial relationship between gravity flow and drainage systems can be determined first, thereby improving the rationality of the modeling and reducing the workload of subsequent adjustments and conflict corrections.

[0028] Preferably, when performing step 3 above, based on pipeline spacing constraints, burial depth constraints and intersection avoidance rules, a multi-dimensional constraint analysis is performed on the spatial relationship between the proposed integrated pipeline and existing pipelines, as well as between the proposed integrated pipeline and surrounding buildings, and conflict areas are eliminated by iteratively adjusting the spatial path parameters of the proposed integrated pipeline.

[0029] Specifically, during the conflict detection process, pipelines are compared segment by segment. When the horizontal or vertical distance between two pipelines is less than a preset safety value, the location is marked as a conflict point. During the adjustment process, the pipeline path near the conflict point is locally modified to bypass existing pipelines or adjust the burial depth, while maintaining the overall pipeline direction without significant changes. After multiple adjustments, the adjusted pipelines are re-inspected to prevent new intersections or close proximity issues from arising at other locations after local modifications.

[0030] By performing conflict detection on pipelines segment by segment and marking conflict locations, the accuracy of conflict identification is improved; by making local adjustments to pipeline paths near conflict points and controlling changes in the overall direction, the stability of the pipeline layout is maintained while eliminating conflicts; and by conducting overall review and inspection after multiple adjustments, new intersection or proximity problems caused by local modifications are effectively avoided, thus improving the reliability and completeness of conflict handling.

[0031] Preferably, when performing step 4 above, the three-dimensional spatial coordinate data in the target pipeline model is converted into layout control point data under the construction coordinate system, and a mapping relationship is established between the BIM model coordinate system and the construction site geographic coordinate system to achieve spatial alignment between the virtual model and the real scene.

[0032] Specifically, during the surveying operation, the BIM model is imported into the GeoBIM software on a PC, and the coordinate data of key points for layout are extracted from the BIM model. This key point coordinate data is then loaded into a mobile terminal, and a data connection is established between the mobile terminal and a total station. The total station uses laser technology to perform real-time positioning measurements of the prism and obtain the actual spatial coordinates of the prism on the construction site. At the same time, the mobile terminal compares the measured position with the theoretical layout points in the BIM model to generate layout deviation feedback information. This allows construction personnel to adjust the prism position on-site based on the deviation information. As the prism's position on the construction site changes, the total station updates the measurement results in real time and displays them synchronously on the mobile terminal, thereby realizing a dynamic correspondence between the actual spatial coordinates of the construction site and the virtual coordinates of the BIM model.

[0033] By importing key point data from the BIM model layout into a mobile terminal and linking it with a total station, unified management of measurement data is achieved; the total station is used to locate the prism in real time and obtain the spatial coordinates on site, improving the real-time performance and accuracy of measurements; by comparing the measured locations with the theoretical layout points in BIM and providing feedback on deviations, timely adjustments to the construction layout are achieved; and by updating and synchronously displaying the measurement results in real time, dynamic correspondence between the coordinates on the construction site and the BIM model is achieved, improving the continuity and controllability of the layout process.

[0034] Preferably, when performing step 5 above, the AR-overlaid construction site image is spatially compared with the excavation range determined by the layout; it is confirmed whether there is any proximity risk between the construction excavation range and existing pipelines and surrounding buildings due to construction layout deviations or site environment errors; and areas with proximity risks are highlighted to guide construction personnel to avoid existing pipelines and buildings during the excavation process.

[0035] Specifically, before actual excavation, the ground is marked according to the layout points, and then mechanical excavation is carried out; during the excavation process, if the marked position is found to be inconsistent with the AR display position, construction is suspended and the layout point position is reconfirmed; when approaching areas with proximity risks, the excavation depth is reduced and excavation is carried out in layers.

[0036] By using ground marking before excavation, real-time comparison of AR images during construction, and layered shallow excavation in risk areas, we can promptly correct layout deviations, effectively avoid the risk of excavation operations disturbing or damaging existing pipelines and structures, and significantly improve the safety and construction accuracy of trench excavation operations in complex environments.

[0037] Preferably, after performing step 5 above, the actual pipeline location after completion is displayed in space by using AR equipment and the target pipeline model; by comparing the position between the actual construction results and the target pipeline model, it is determined whether the construction completion results meet the design requirements, and areas where the deviation exceeds the preset allowable range are visually marked.

[0038] Specifically, during acceptance, the constructed area is rescanned on-site, and the scan results are compared with the BIM model to check whether the pipelines deviate from the design position. For positions with large deviations, they are marked with different colors in the AR screen to indicate that rework or correction is required. The acceptance results are recorded in the BIM model as reference data for subsequent maintenance or secondary construction.

[0039] By scanning the actual scene on-site and combining it with AR visualization comparison and color-coded reminders of deviation areas, the construction quality can be judged intuitively and pipeline installation deviations can be accurately identified. At the same time, the acceptance data is synchronously entered into the BIM model, which not only ensures the accuracy and reliability of the acceptance results, but also provides a complete data basis for the later pipeline operation, maintenance, renovation and expansion.

[0040] It should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding and reading. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0041] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A method for direct burial of underground integrated pipelines in complex environments based on BIM, characterized in that, Including the following steps: Step 1: Obtain information on existing pipelines, surrounding buildings, and the proposed integrated pipeline design within the construction area; Step 2: Establish an underground integrated pipeline BIM model based on the existing pipeline information, the surrounding building information, and the proposed integrated pipeline design information; Step 3: Based on the underground integrated pipeline BIM model, perform spatial conflict detection, and adjust and optimize the location of the proposed integrated pipeline according to the detection results to obtain the target pipeline model; Step 4: Generate an AR layout image based on the target pipeline model, and use AR technology to fuse the spatial location information of the target pipeline model with the construction site scene to assist construction personnel in pipeline layout and positioning; Step 5: Based on the fusion display results, lay out the underground integrated pipelines and complete the trench excavation, pipeline laying and ancillary structure construction.

2. The method for direct burial of underground integrated pipelines in complex environments based on BIM as described in claim 1, characterized in that, When performing step 2 above, modeling is carried out in the order from top to bottom and from large pipe to small pipe. Among them, rainwater inlet connection pipes with gravity flow properties are modeled in priority over other municipal pipelines.

3. The method for direct burial of underground integrated pipelines in complex environments based on BIM as described in claim 1, characterized in that, When performing step 3 above, based on pipeline spacing constraints, burial depth constraints and intersection avoidance rules, a multi-dimensional constraint analysis is conducted on the spatial relationship between the proposed integrated pipeline and existing pipelines, as well as between the proposed integrated pipeline and surrounding buildings. The spatial path parameters of the proposed integrated pipeline are iteratively adjusted to eliminate conflict areas.

4. The method for direct burial of underground integrated pipelines in complex environments based on BIM as described in claim 1, characterized in that, When performing step 4 above, the three-dimensional spatial coordinate data in the target pipeline model is converted into layout control point data under the construction coordinate system, and a mapping relationship is established between the BIM model coordinate system and the construction site geographic coordinate system to achieve spatial alignment between the virtual model and the real scene.

5. The method for direct burial of underground integrated pipelines in complex environments based on BIM as described in claim 1, characterized in that, When performing step 5 above, the AR-overlaid construction site image is spatially compared with the excavation area determined by the layout; it is confirmed whether there is any risk of proximity between the construction excavation area and existing pipelines and surrounding buildings due to construction layout deviations or site environment errors; and areas with proximity risks are highlighted to guide construction personnel to avoid existing pipelines and buildings during the excavation process.

6. The method for direct burial of underground integrated pipelines in complex environments based on BIM as described in claim 1, characterized in that, After completing step 5 above, the actual pipeline location after completion is displayed in space by using AR equipment and the target pipeline model; by comparing the position between the actual construction results and the target pipeline model, it is determined whether the construction results meet the design requirements, and areas where the deviation exceeds the preset allowable range are visually marked.

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