Current BIM (information model building, building information model) technology has become the research and application of information technology in the field of construction, BIM technology in the application of the construction site has been gradually excavated.
1 aluminum template introduction
1.1 why use aluminum formwork
Aluminum template, also known as aluminum alloy template, as the name suggests is the construction of aluminum alloy. Aluminum alloy formwork system is installed, convenient disassembly, turnover times up to 120 times, the appearance quality of concrete can reach the effect of clear water concrete and its formation, perpendicularity to the concrete structure engineering construction quality acceptance norms "requirements, and other features, is the Ministry of construction to promote energy saving and environmental protection products.
In aluminum alloy template processing, increase oxidation treatment and powder spraying process, can effectively solve the quality problems of high temperature oxidation of aluminum mold used for the first time stage of concrete surface pores and pits, peeling. Concrete appearance quality can be guaranteed, improve the overall quality of the project.
Aluminum template design, research and development and application of construction, the construction industry a great of development, the gold standard aluminum template is in accordance with the needs of society, to create a professional green construction, green building, energy saving and environmental protection and efficient construction industry leading architectural aluminum template.
Compared with the traditional operation of the plywood template, aluminum alloy template has the following characteristics:
1) is conducive to environmental protection, saving wood, to protect the forest;
2) template can be used for many times, good surface forming;
3) the smallest size error;
4) less debris, easy to pile up;
5) construction waste less, conducive to the construction of civilization.
1.2 defects in traditional construction methods
But the traditional aluminum template with pattern just plane labeling the number size of aluminum mold, but not very good detail stitching, learning cost is higher, placed in the relationship of workers can not be a good understanding of aluminum mold and due to the presence of electromechanical hole and the inclined beam, plane cannot expression the position relation. And as the template and assembled figure there are deviations from the location of the scene has a lot of free cutting aluminum mold behavior. Integrated down aluminum mold cost, duration and other benefits may not be much higher than wood.
2 project profile
Reitaku financial business district project general contracting project is located in the Beijing Fengtai District, Lize business district core area, Lai chack bridge (West Sanhuan) and vegetable farmers camp bridge (West Second Ring Road). The project is on the north side of Lai Road, East Road, lotus river, site planning land area of about 45 thousand square meters. Four high-rise office buildings were F02-1# (32 floors) building height of 150 meters, F02-2# layer (25) building height of 120 meters, F03# layer (42) building height of 199.9 meters, F05 layer (31) of the building height of 150 meters, six storey commercial podium and a four story commercial and parking field basement composition. The total construction area of 513153 square meters, including building area of 379900 square meters, ground, underground construction area of 133253 square meters.
3 construction process
The project F02-1#, F02-2# tower for core tube structure, by considering from F02-1#, F02-2# Building 2 layer upwards to the top using aluminum template, which F02-1# tower template total area for 97738.12 square, among them can use aluminum template area of 5400.39 square, after much time optimization F02-1# tower eventually with 2129 square meters in area. 94147.07 square F02-2# tower template with a total area of, which can use aluminum template area of 34204.60 sqm, F02-2# tower with board area for 1827 square meters, due to aluminum template can many times turnover, aluminum template phase compared with the wood template save nearly 75%.
Aluminum formwork construction process is:
Installation wall column formwork, installation beam formwork, installation slab formwork, inspection of verticality, check smooth degree, check pin is correctly wedging, transfer of roof steel banding, wall column reinforcement, pouring concrete wall column positioning line, elevation copy flat, caving
4 project based on BIM technology innovation for Lize aluminum formwork construction
4.1 model optimization process
In order to reduce the field workers for aluminum template learning cost, Lize BIM project team led by the chief engineer of the project of aluminum template CAD deepen map of BIM 3D modeling and optimization.
First of all, through the Revit 2014 software to produce aluminum template of the standard parametric model family, to facilitate the BIM model of the aluminum template stitching, the number of statistics, but also further improve the project BIM family library.
Followed by the use of Revit software reference CAD drawings of aluminum mold BIM splicing, due to CAD drawing plane cannot very good reflect aluminum template 3D placement and due to CAD drawing plane characteristics, position in relation to the portal structure and beam position and aluminum template is bound to be errors. The BIM team found that many errors in the process of aluminum template splicing and optimized to solve, reducing the site of the construction rework, saving the labor force.
Again through the BIM software detail table function statistics F02-1 and F02-2 standard layer of aluminum template specific quantity, and with the materials of the quantity of materials, find out the quantity error.
Finally, using 3DMAX software before BIM model animation video, in order to facilitate the aluminum template for clarification and reduce the cost of workers' learning.
4.2 visualization.
The full visual effect of the application of BIM software, the process method of visualization of construction personnel work, specific practices:
4.2.1 for workers of standard layer of whole construction technics animation disclosure (through the 3DMAX software to make animation clarification videos).
4.2.2 based on the BIM software, the corresponding main details process of construction workers.
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