A senior high school in ZD city plans to build student apartments in the northeast corner of its campus to address accommodation challenges. The construction must consider the surrounding environment, and traditional building methods are not feasible within the site’s spatial constraints. Therefore, prefabricated building structures will be used.
The apartment building will have six floors, no basement, a total floor area of 9,800 m², and a height of 24 meters. It will accommodate approximately 1,000 students. This project features a fully assembled concrete frame structure. Except for the cast-in-place bathroom and roof elements, all components are prefabricated. On-site management will focus on applying BIM technology to ensure the project is completed on time while maintaining quality and quantity standards.
Assembly Site Management
Based on the engineering requirements and component dimensions of prefabricated buildings, suitable lifting machinery and equipment should be selected. Using the visual and 3D simulation capabilities of the building information model, collaborate with the design team to plan optimal locations for lifting machinery. This prevents the need to disassemble equipment later due to assembly failures caused by size conflicts, avoiding unnecessary waste.
Efficient site planning can reduce the number of machines needed onsite, saving costs. For assembly sites, this includes managing lifting equipment, internal structural assembly, and masonry work.
Dynamic simulations using BIM help promptly identify assembly issues. Installation and masonry workers gain a better understanding of the building’s internal structure by observing simulated construction, improving overall efficiency. Simulated construction also enables visual supervision and helps avoid space shortages in assembly areas. BIM serves both as a simulation and management tool and should be fully leveraged.
Assembly Progress Management
Managing assembly progress for prefabricated buildings should be done on a BIM platform. Progress tracking involves calculating assembly work for components and masonry based on the building information model. A component assembly management plan should be developed and adjusted according to actual site conditions.
The platform can number components, simulate assembly, and refine management plans to resolve issues discovered during simulations. Using 3D simulation, site managers can intuitively identify problems during component construction.
If deviations occur during component lifting, BIM technology enables analysis and correction of errors through reassembly. Managers can also compare multiple correction plans and choose the most effective one.
Daily assembly data can be analyzed to monitor progress and simulate the project timeline. Deviations from the schedule are recorded in the BIM system with color-coded indicators for easier tracking and follow-up.
By combining assembly progress with fund management, BIM facilitates dynamic on-site management of prefabricated building projects.
Assembly Cost Management
Cost management in prefabricated building projects centers on component assembly. Since component manufacturing is a standardized and programmed process, changes after signing manufacturing contracts are generally not allowed.
BIM models provide data on construction and assembly quantities, helping calculate costs for various components and accessories. This data supports on-site management decisions.
Using BIM technology to monitor and compare costs related to components, assembly, and financing enables comprehensive project planning and investment analysis.
Construction management should reflect actual site conditions, systematically oversee cost control, and supervise both assembly and masonry productivity to ensure high-quality project completion.
Source: Heilongjiang Science, Issue 6, 2022
Author: Tang Jihua
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