BIM (Building Information Modeling)-based medical building filler wall anti-cracking construction method

Abstract

The invention discloses a BIM (Building Information Modeling)-based anti-crack construction method for a medical building infilled wall. The method comprises the following steps: integrating professional models based on BIM; performing finite element analysis on the BIM model, and identifying a potential cracking risk area; the constructed nodes are optimized; the arrangement of the building blocks is optimized; the pipeline hole is positioned; a drawing is generated based on the BIM model, visual technical disclosure is carried out, and autoclaved aerated concrete blocks are adopted for wall building; performing digital maintenance; and process data is digitized. The construction method has the beneficial effects that the building blocks are optimally arranged through the BIM technology, the number of mortar joints and stress concentration points are remarkably reduced, and the generation probability of shrinkage cracks is fundamentally reduced; precise butt joint of the wall body and the complex medical pipeline is achieved, damage to integrity, sound insulation and fireproof performance of the wall body due to later digging is avoided, cleanliness and safety of a medical space are guaranteed, and applicability of a medical building is improved.

Description

Technical Field

[0001] This application belongs to the field of medical building construction technology, specifically involving a BIM-based method for crack-resistant construction of infill walls in medical buildings, wherein the infill walls are constructed using autoclaved aerated concrete blocks. Background Technology

[0002] Autoclaved aerated concrete (AAC) blocks are widely used in non-load-bearing infill walls of medical buildings due to their advantages such as lightweight, thermal insulation, heat insulation, and fire resistance. However, medical buildings have complex functions, and the interior walls need to accommodate large amounts of medical gases, air conditioning, electrical systems, intelligent systems, and water supply and drainage pipes, resulting in numerous openings and stress concentrations in the walls. In traditional construction, the blocks are arranged haphazardly, with numerous and uneven mortar joints. Coupled with material shrinkage and improper construction techniques, this easily leads to cracking of the plaster layer, affecting the cleanliness, aesthetics, and safety of the medical environment. Summary of the Invention

[0003] The purpose of this application is to provide a BIM-based construction method for crack-resistant infill walls in medical buildings. BIM technology can integrate information from multiple disciplines such as architecture, structure, and MEP to achieve three-dimensional visualization design and construction simulation. Applying it to the detailed design, layout optimization, and crack prevention of autoclaved aerated concrete block walls can fundamentally improve construction quality and meet the high standards required for medical buildings.

[0004] The objective of this application is achieved through the following technical solution: A BIM-based construction method for crack-resistant infill walls in medical buildings includes the following steps: Step S1: Integrate the various professional models based on BIM; Step S2: Perform finite element analysis on the BIM model to identify potential cracking risk areas; Step S3: Optimize the constructed nodes; Step S4: Optimize the block layout; Step S5: Locate the pipeline opening; Step S6: Generate drawings based on the BIM model and conduct visualization technology briefing; use autoclaved aerated concrete blocks for wall construction. Step S7, Digital Maintenance; Step S8: Process data digitization.

[0005] Furthermore, in step S1, the BIM model integrating architecture, structure, medical ventilation, purification, medical equipment, and electromechanical pipelines is integrated, and the wall positioning, thickness, and relative relationship with structural beams, columns, and door and window openings are checked to ensure the accuracy of the design conditions.

[0006] Furthermore, in step S2, the stress distribution of the wall under temperature and humidity changes and material shrinkage is simulated using finite element analysis software to identify potential cracking risk areas.

[0007] Furthermore, in step S3, the crack-resistant structure at the junction of the wall and the concrete structure, and the walls of different materials is refined in the BIM model. The setting of door and window lintels and structural columns is optimized to ensure that they are coordinated with the block module and reduce on-site cutting.

[0008] Furthermore, in step S3, mortar joint reinforcement bars or alkali-resistant mesh fabric flanges are installed at the junctions of the wall and the concrete structure, or at the junctions of walls of different materials.

[0009] Furthermore, in step S4, a three-dimensional layout design is carried out for each layer of blocks, following the principle of staggered joints and overlapping of inner and outer sections; large-sized main blocks are prioritized for layout to minimize the number of auxiliary blocks and the total length of mortar joints; non-whole blocks are symmetrically arranged in the middle of the wall or on both sides of door and window openings to avoid too many short blocks and dense mortar joints in stress concentration areas.

[0010] Furthermore, in step S5, all through-wall pipes and boxes are precisely located, and their positions and reinforcement measures are clearly defined in the block layout model. This generates a block layout diagram and a comprehensive pipe opening diagram with precise opening positions and dimensions, guiding precise on-site cutting and avoiding arbitrary excavation later.

[0011] Furthermore, in step S6, the block layout diagram and 3D node details generated by the BIM model are used to provide visual technical instructions to the construction team, ensuring that each worker understands the intention of the brick layout and the key points of quality control.

[0012] Furthermore, in step S6, the masonry construction process strictly follows the block layout diagram output from the BIM model, controlling the mortar joint thickness; special masonry mortar and plastering mortar matching the autoclaved aerated concrete blocks are used, and their performance indicators should meet the standards; plastering is carried out in layers, and the next layer can only be applied after the bottom layer has set; alkali-resistant glass fiber mesh is pressed into the plaster layer to further enhance crack resistance.

[0013] Furthermore, in step S7, after plastering is completed, timely spraying for moisturizing and maintenance is carried out, and the maintenance time is not less than 7 days; the temperature and humidity of the maintenance environment are monitored using IoT devices.

[0014] Furthermore, in step S8, key nodes and image data of bricklaying, plastering, and curing during the construction process are associated with BIM model components to form a traceable digital as-built archive.

[0015] The beneficial effects of this application are: (1) By optimizing the layout of blocks using BIM technology, the number of mortar joints and stress concentration points are significantly reduced, which fundamentally reduces the probability of shrinkage cracks.

[0016] (2) It achieves precise connection between the wall and complex medical pipelines, avoids damage to the integrity of the wall and its sound insulation and fire resistance due to later excavation, ensures the cleanliness and safety of the medical space, and improves the applicability of medical buildings.

[0017] (3) Visualized handover and precise material cutting reduced on-site cutting and waste, achieved standardized and refined construction, effectively controlled construction deviations, and improved construction efficiency and quality.

[0018] (4) The complete BIM model and construction process data provide a reliable wall information foundation for the intelligent operation and maintenance of medical buildings, forming digital assets.

[0019] The aforementioned main solution and its various further alternatives can be freely combined to form multiple solutions, all of which are solutions that can be adopted and are claimed in this application; furthermore, the (non-conflicting alternatives) can also be freely combined with each other and with other alternatives. Those skilled in the art, after understanding the solution of this application, will realize from the prior art and common general knowledge that there are many combinations, all of which are technical solutions to be protected by this application, and will not be exhaustively listed here. Attached Figure Description

[0020] Figure 1 This is a flowchart illustrating the process of this application. Detailed Implementation

[0021] The following non-limiting embodiments are used to illustrate this application.

[0022] Example 1 refer to Figure 1 As shown, a BIM-based construction method for crack-resistant infill walls in medical buildings includes the following steps: Step S1, integrating various professional models based on BIM.

[0023] Integrate the BIM model of architecture, structure, medical ventilation, purification, medical equipment, and electromechanical pipelines, and verify the wall positioning, thickness, and relative relationship with structural beams, columns, and door and window openings to ensure the accuracy of design conditions.

[0024] Step S2 involves performing finite element analysis on the BIM model to identify potential cracking risk areas. Using finite element analysis software, the stress distribution of the wall under temperature and humidity changes and material shrinkage is simulated to identify potential cracking risk areas.

[0025] Step S3: Optimize the structural nodes. Refine the crack-resistant structure at the junction of walls and concrete structures, and walls of different materials in the BIM model. Optimize the setting of door and window lintels and structural columns to ensure that they are coordinated with the block module and reduce on-site cutting.

[0026] Reinforcing mortar joints or alkali-resistant mesh fabric are installed at the junctions of walls and concrete structures, and at the junctions of walls of different materials.

[0027] Step S4 involves optimizing the block layout. A three-dimensional layout design is performed for each course of blocks, adhering to the principles of staggered joints and overlapping. Larger main blocks are prioritized for optimal layout, minimizing the number of auxiliary blocks and the total length of mortar joints. Non-whole blocks are symmetrically placed in the middle of the wall or on both sides of door and window openings to avoid excessive short blocks and dense mortar joints in stress concentration areas.

[0028] Step S5: Locate the pipe openings. Accurately locate all through-wall pipes and boxes, and clearly define their positions and reinforcement measures in the block layout model. Generate a block layout drawing and a comprehensive pipe opening drawing with precise opening positions and dimensions to guide accurate on-site cutting and avoid arbitrary excavation later.

[0029] Step S6: Generate drawings based on the BIM model and conduct visualization technical briefing. Autoclaved aerated concrete blocks are used for wall construction. The block layout diagram and 3D node details generated by the BIM model are used to conduct visualization technical briefing for the construction team to ensure that each worker understands the brick layout intention and key points of quality control.

[0030] During masonry construction, the bricklaying must be strictly carried out according to the block layout diagram output from the BIM model, controlling the mortar joint thickness (horizontal joint ≤15mm, vertical joint ≤20mm) and fullness (≥90%). Specialized masonry mortar and plastering mortar compatible with autoclaved aerated concrete blocks should be used, and their performance indicators should meet the standards. Plastering should be done in layers, with the next layer only applied after the previous layer has set. Alkali-resistant fiberglass mesh is pressed into the finishing layer to further enhance crack resistance.

[0031] Step S7, Digital Maintenance: After plastering is completed, promptly spray with moisturizing agent for at least 7 days. Monitor the temperature and humidity of the maintenance environment using IoT devices.

[0032] Step S8: Digitize process data. Link key nodes and image data of bricklaying, plastering, and curing during construction with BIM model components to form a traceable digital as-built archive.

[0033] The foregoing basic examples and their further alternative examples can be freely combined to form multiple embodiments, all of which are embodiments that can be adopted and claimed in this application. In the scheme of this application, each alternative example can be arbitrarily combined with any other basic example and alternative example.

[0034] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A BIM-based construction method for crack-resistant infill walls in medical buildings, characterized in that, Includes the following steps: Step S1: Integrate the various professional models based on BIM; Step S2: Perform finite element analysis on the BIM model to identify potential cracking risk areas; Step S3: Optimize the constructed nodes; Step S4: Optimize the block layout; Step S5: Locate the pipeline opening; Step S6: Generate drawings based on the BIM model and conduct visualization technology briefing; use autoclaved aerated concrete blocks for wall construction. Step S7, Digital Maintenance; Step S8: Process data digitization.

2. The BIM-based construction method for crack-resistant infill walls in medical buildings according to claim 1, characterized in that: Step S1 involves integrating the BIM model of the building, structure, medical ventilation, purification, medical equipment, and electromechanical pipelines, and verifying the wall positioning, thickness, and relative relationship with structural beams, columns, and door and window openings to ensure the accuracy of the design conditions.

3. The BIM-based construction method for crack-resistant infill walls in medical buildings according to claim 1, characterized in that: In step S2, the stress distribution of the wall under temperature and humidity changes and material shrinkage is simulated using finite element analysis software to identify potential cracking risk areas.

4. The BIM-based construction method for crack-resistant infill walls in medical buildings according to claim 1, characterized in that: Step S3 involves refining the crack-resistant design at the junction of walls and concrete structures, and walls of different materials in the BIM model, optimizing the setting of door and window lintels and structural columns, ensuring their coordination with the block module, and reducing on-site cutting.

5. The BIM-based construction method for crack-resistant infill walls in medical buildings according to claim 1, characterized in that: In step S4, a three-dimensional layout design is carried out for each layer of blocks, following the principle of staggered joints and overlapping. Large-sized main blocks are prioritized for layout to minimize the number of auxiliary blocks and the total length of mortar joints. Non-whole blocks are symmetrically arranged in the middle of the wall or on both sides of door and window openings to avoid too many short blocks and dense mortar joints in stress concentration areas.

6. The BIM-based construction method for crack-resistant infill walls in medical buildings according to claim 1, characterized in that: Step S5 involves accurately locating all through-wall pipes and boxes, clarifying their positions and reinforcement measures in the block layout model, and generating a block layout diagram and a comprehensive pipe opening diagram with precise opening positions and dimensions to guide precise on-site cutting and avoid arbitrary excavation later.

7. The BIM-based construction method for crack-resistant infill walls in medical buildings according to claim 1, characterized in that: In step S6, the block layout diagram and 3D node details generated by the BIM model are used to provide visual technical instructions to the construction team, ensuring that each worker understands the intention of the brick layout and the key points of quality control.

8. The BIM-based construction method for crack-resistant infill walls in medical buildings according to claim 1 or 7, characterized in that: In step S6, the masonry construction process strictly follows the block layout diagram output from the BIM model, controlling the mortar joint thickness; special masonry mortar and plastering mortar matching the autoclaved aerated concrete blocks are used, and their performance indicators should meet the standards; plastering is carried out in layers, and the next layer can only be applied after the bottom layer has set; alkali-resistant glass fiber mesh is pressed into the plaster layer to further enhance crack resistance.

9. The BIM-based construction method for crack-resistant infill walls in medical buildings according to claim 1, characterized in that: In step S7, after plastering is completed, timely spraying for moisturizing and maintenance is carried out, and the maintenance time is not less than 7 days; the temperature and humidity of the maintenance environment are monitored using IoT devices.

10. The BIM-based construction method for crack-resistant infill walls in medical buildings according to claim 1, characterized in that: Step S8 involves linking key nodes and image data of bricklaying, plastering, and curing during the construction process with BIM model components to form a traceable digital as-built archive.

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