by ▲ click the blue words above to pay attention to the PKPM Guli technology project information: the project includes two residential buildings, of which the 14F above the ground of the 1\building is partially with 2F commerce, and the 17F above the ground of the 2\building.
The total building area is 34126.72 ㎡, the underground building area is 11621.31 ㎡, and the aboveground building area is 22060.15 ㎡.
Types of prefabricated components: this case is shared as 1\5\residential building.
Prefabricated components include prefabricated laminated plates, prefabricated stairs, prefabricated shear walls, prefabricated partition walls, etc.
Author tangfujin, vice president of Nanjing Huazhi construction group design branch cuianping, chief engineer of digital assembly Institute of Nanjing Huazhi construction group design branch project overview design is based on standardized design – plane standardization.
Functional units such as living room, bedroom, bathroom, kitchen and elevator parts of the residential building of the project are standardized.
There are two types of residential buildings, 1\consists of type A and 2\a+a1 (lower duplex), The standardized utilization rate of building units reaches 100%.
Standard floor layout plan II elevation standardization the two residential buildings in the project are 3.1 floors high (1\1\ground floor commercial 4.5m floors high).
The number of floors and building height of each single residential building are only different.
The standard facade form is adopted to form a unified architectural style and facilitate later construction and maintenance management.
Standardization of three components prefabricated components of the project include prefabricated laminated plates, prefabricated stairs, prefabricated shear walls, etc.
According to the technical guidelines for standardized design of prefabricated components of prefabricated residential buildings in Nanjing (Trial), the prefabricated components of the project are designed in a standardized way: ① standardization of prefabricated composite plates: except for the whole plate prefabrication, the rest of the composite plates that meet the standardized length adopt the layout of 4.3.1-1 double plate splicing (type I standard plate +300+ type II standard plate) in the guidelines, and the dimensions of the standardized composite plates are selected from tables 4.3.2 and 4.3.3; Standard selection of prefabricated laminated slab ② standardization of prefabricated stairs: prefabricated stairs shall be designed with st-310-250-l (R) component dimensions in the fourth paragraph of table 5.3.1 in the guidelines; Standard selection table for prefabricated stairs detail drawing of prefabricated stair node 1 × standard floor prefabricated laminated plate and prefabricated stair surface layout 1 × standard floor prefabricated laminated plate and prefabricated stair statistical table ③ standardization of prefabricated shear wall: the length of prefabricated shear wall in this project adopts the four standardized design dimensions of 800mm, 1000mm, 1200mm and 1800mm in table 6.3.1 of the guidelines; 1\1\prefabricated shear wall layout plan 1\prefabricated shear wall standardization statistical table ④ the summary table of standardization rate of prefabricated components of the project, including prefabricated laminated plates, prefabricated shear walls and prefabricated stair components is as follows: summary table of standardization rate informatization technology – brief description of informatization technology application in the design phase of the project, BIM software is used for the design of fabricated parts: the design function of BIM software is used, It can realize the statistics of prefabricated data (Jiangsu prefabricated assembly rate, component standardization rate, prefabricated component list, etc.), and reflect the rationality of prefabricated component design in real time (3D view, collision inspection and later component deepening).
After the BIM design is completed, the prefabricated building design information model can be obtained.
The model includes Z1 and Z2 technical configurations related to the prefabrication and assembly rate, and the results of Z3 items can be imported.
The relevant data of individual prefabrication and assembly rate of each building can be calculated through the definition and statistical function of the BIM software.
At the same time, the model can actually reflect the designed prefabricated component size and distribution floors.
With the help of the digital function of BIM software, the later production and construction units can export the relevant information of each prefabricated component (such as volume, location, distribution floors, etc.) to facilitate the production and installation of prefabricated components.
II.
BIM model figure 1\3-d diagram of single model section schematic diagram quasi floor model 3-D icon quasi floor prefabricated component 3-D standardization rate calculation according to the standardization rate calculation formula in the technical guidelines for standardized design of prefabricated components of prefabricated residential buildings in Nanjing (Trial), the standardization rate calculation of various components is completed by importing the basic information table of standard components through pkpm-pc.
Calculation formula of standardization rate basic information table of standard components calculation of standardization rate (demonstration) calculation of prefabrication and assembly rate the prefabrication and assembly rate of single building of the project is 50.1%, which meets the index requirements that the prefabrication and assembly rate of single building is not less than 50%, and the application proportion of single three plates is 85.41%, which meets the index requirements that the application proportion of single “three plates” is greater than 60%.
1 \n\e buildings are delivered in hardbound, meeting the requirements of 100% delivery of finished houses.
1\1\prefabricated shear wall layout plan 1\vertical component list 1\prefabricated laminated slab, prefabricated stair surface layout plan 1\horizontal component list 1\prefabricated assembly rate and three plate application statistical table conclusion the prefabricated scheme design of the project is carried out in accordance with the technical guidelines for standardized design of prefabricated components of prefabricated residential buildings in Nanjing (Trial).
The types of prefabricated components in the guidelines can cover the basic prefabricated components in residential projects, Relevant components also meet the normal requirements for production, transportation and hoisting.
The standardized design with reference to the component selection table in the guidelines can effectively improve the universality of components among different projects, practice the design concept of “less specifications and more combinations”, and realize the organic combination of standardization and personalization of regional components.
In this project, the BIM Technology is applied to complete the project scheme design and upload it to the Nanjing prefabricated building information service and supervision platform to complete the meeting review.
During the design process, pkpm-pc can efficiently and conveniently provide various data to ensure the authenticity of the data..
