1. Modeling
Engineering data analysis typically relies on construction drawings, with BIM technology used to simulate comprehensive pipelines through detailed 3D modeling. This approach helps predict potential issues and unstable factors during construction, allowing for targeted solutions. By harnessing BIM’s advantages, construction teams can anticipate and identify possible problems within integrated pipelines, detect discrepancies across different professional drawings, and develop well-informed, scientific plans to enhance construction quality and efficiency.
Utilizing BIM for 3D information modeling enables timely identification of construction issues and facilitates their resolution, ensuring smooth completion of integrated pipeline layouts. Key aspects of applying BIM technology in modeling include:
First, geophysical exploration plays a critical role. Effective 3D modeling depends on thorough site investigation and understanding. Leveraging geophysical exploration helps gather comprehensive on-site data and construction drawing information, which supports the creation of accurate 3D models and promotes optimization of construction drawings and technical details.
Second, the actual modeling process involves creating a 3D model using information technologies. Different professions and specialties require scientific adjustment and determination of data parameters. As integrated pipeline construction parameters change, modeling captures these variations promptly. Initially, BIM sets elevations for pipelines across various trades to ensure accuracy. The model is then constructed, data summarized, and preliminary 3D visualizations displayed in real time. Throughout this process, staff must document issues as they arise, categorize and analyze them, and develop refined standards and specifications accordingly.
2. Regional System Status Check
It is crucial to assess the high-cost, high-standard construction systems within the area, focusing on elements like bus ducts and gravity water pipes. These should not be placed in lower-level structures near crowded areas. Identifying major factors affecting the comprehensive pipeline and segmenting the area accordingly is essential.
For example, in underground parking construction, sequential arrangement must be considered. When clearance is insufficient, pipelines may be arranged at the same elevation, maintaining a 5-10 cm gap between the bottom of the air duct and the secondary beam. If the air duct elevation cannot be achieved, high-altitude compression is applied, with cable trays and pipelines layered above and below within the air duct’s height. It is important to avoid collisions between water and electrical systems in confined spaces between air ducts by adjusting layer positions and minimizing bends. Where possible, comprehensive hanger treatments should be applied to sprinkler main pipes with limited net height to optimize spatial layout around beams and air ducts.
3. Comprehensive Collision Analysis in Pipeline Design
Collisions often occur in mechanical and electrical pipeline designs, which can severely impact system quality and functionality. Pipeline layout professionals use 3D modeling within BIM to inspect spatial arrangements, identify collisions, and address them effectively.
Drainage pipes, HVAC ducts, electrical equipment, and other components prone to collisions with building structures are key focus areas. Due to the complexity of pipeline systems, collision detection should avoid simultaneous large-scale scans to improve quality and efficiency. Instead, focus on critical points prone to collisions and resolve these issues strategically.
Revit software is commonly employed for comprehensive collision detection in pipeline designs. It generates detailed inspection reports based on real-world data, providing inspectors with comprehensive information and valuable support.
4. Initial Deepening of Design
BIM differs fundamentally from traditional pipeline management by enabling precise elevation positioning through 3D views when layering pipelines. BIM uses techniques like motion capture, reverse motion, and additive/subtractive calculation formulas to improve elevation accuracy significantly.
With 3D visualizations, data and spatial arrangements can be adjusted promptly, reserving space for supports, hangers, construction access, maintenance, and insulation layers in advance. When design changes occur, net height issues must be reported to the project owner, with design information updated accordingly to meet requirements. Early identification and resolution of potential problems are key before structural construction begins.
5. Secondary Deepening Design
After mechanical and electrical drawings are finalized and structural construction is complete, retesting and secondary deepening design become essential to maintain the structural model’s accuracy. This phase focuses on resolving pipeline collisions by avoiding structural columns and beams, using secondary masonry, and establishing reserved hole models to optimize pipeline layouts.
The goal is to ensure architectural hole plans and mechanical-electrical drawings are accurate, laying a solid foundation for further detailed work. Navisworks software is frequently used for conflict detection, allowing parameter adjustments across different professional pipelines to complete inspection tasks.
Following retesting, Navisworks analyzes and manages potential collision issues promptly, ensuring optimized integrated pipelines. For simpler projects, software-based operations suffice, while complex areas benefit from 3D modeling and Revit-based collision detection.
When pipeline collisions with the main structure occur, the layout must be optimized according to the principle: “electricity over water, water over air, pressurized over non-pressurized, and gravity drainage with priority.” This ensures final pipeline arrangements for drainage, HVAC, fire protection, and other systems meet standards and functional requirements.
Source: Residential and Real Estate, Issue 24, 2021
Author: Liang Peng, Liuzhou Dongcheng Anju Real Estate Development Co., Ltd
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