The key factor of BIM implementation is the standardization and automation framework of construction drawing. For pragmatic reasons, the framework should not only support basic finite element analysis, drawing and estimation software but also different versions of AutoCAD. Technically speaking, automation, individuation, interaction and platform adaptability of the framework are the keys. Automation means high drawing speed and better drawing quality; individuation means the construction drawing framework is adaptable to different ways of drawing expression; platform adaptability means the framework is compatible for other drawing software; interaction means related drawings can modify themselves when a structure component is modified. In the end of the article, the process of implementation of standardization and automation framework is introduced.
Research and Application of Parameterized Rebar Modeling for Prefabricated Building Component based on Revit
The 3D rebar modeling in Revit has been a difficult problem for the designers in the deepening design of prefabricated building component.This paper presents a parametric rebar modeling method for prefabricated building componentthrough the research on the arrangement ruleof rebar.Based on the rebar modeling method and Revit secondary development technology, a set of design-aided software is developed.It is proven through engineering applications that this method can effectively reduce the work load on rebar modeling, which saves a lot of time and money.This method can be used as a rapid modeling reference of 3D reinforced prefabricated construction design.
With the development of mobile Internet, cloud computing and Internet of things, the means of building information management are also widening.GDAD-PCMIS is a Bim-based PC building collaborative management system, which can be used for the whole life-cycle of PC building induding the design, component processing and construction. The system uses the corresponding coding system to reduce the BIM model information, which is later stored in the network database for management applications.Based on the data, the system for the multi-type, multi-unit collaborative process and management points between the project treasury and project progress control system core, supplemented by design financing, meeting information, document management, schedule planning Content, through the mobile side and the computer side for information exchange and full-cycle management.At the same time, the participating units can also use API interface to get access to the internal management system data, and can furtherly mine the value of BIM model information.
The development route for BIM is to gradually realize BIM through improvement of existing professional software with P-BIM thinking. Piled foundation P-BIM software is based on P-BIM design. This paper explores its design process, data interface and main functions. Using this software, contractors can get instant quantities of piles and communicate, coordinate and solve problems immediately with the designers and Party A. Besides, the government departments can supervise the construction quality and safety in an efficient way.
The problem of efficiency of girder reinforcement design in Revit environment is a top concern of structural majors.This paper presents an Advanced Plane Integral Drawing Method and a set of assistant software for this method which is developed based on Revit secondary development technology.This paper also presents a set of methods for structural engineers to add reinforcement tags, to link calculation results, to mark all the girder spans, to add reinforcement information to girder elements directly, and etc.Operation process and operation mode of this method is almost the same to the traditional method, and this method satisfies the need for repeated modifications.This method not only inherits the traditional design habits and examining habits and shortens engineer′s adaptation period, but also improves engineer′s working efficiency.Besides, because every girder element is provided with complete reinforcement information, 3D reinforcement can be easily generated by software.
Due to low efficiency and unreasonable work flow in BIM practice, civil engineers encounter difficulties during the transformation from traditional 2D design to 3D parametric design. This paper conducts an in-depth research on these two problems, finds out solutions and works out a lot of assisted plugins, which increases the efficiency of building BIM model, solves the cooperation problem of multi-specialty under Revit platform, and finally realizes the whole process design of BIM.
In this paper, the BIM technology is applied in the design of high-rise residential buildings, to launch analysis and research on several key technologies. A BIM-based multi-disciplinary modeling architectural form and a datum-providing method in collaborative process are introduced in the paper, and a GDAD-PCMIS collaborative management system is developed to meet the needs of multi-party collaboration. A shape-nesting plan-design module is developed, which is able to form various building plans through combining different flexible modules with the fixed modules. An application method of component part based on linkage function is proposed to ensure the unity of component detail drawings and 3D models, as well as a prefabricated component part library is established to embody the accumulation of the component parts. The cost composition of the prefabricated building is also discussed to analyze the impacts of different prefabricated component combinations on the economic benefits of the buildings. The assistive calculation software on the prefabrication rate and assembly rate is also developed to enhance the design efficiency of prefabricated high-rise residential buildings.
This paper analyzes the reasons that affect the efficiency of structural design, and proposes a BIM forward designing method based on Revit. The BIM model standard data of structural design is studied in depth, and conclusion is made that the standard data satisfies the design habits for structural construction drawings throughout the country.Currently, the key technologies for BIM forward designing method include Revit rapid modeling, BIM model calculation and BIM plotting. This paper solves the three key technologies through investigation and implements them through software development. According to the method proposed in this paper, the design efficiency and quality can be significantly improved by using Revit instead of AutoCAD for structural design, and the problems of BIM application in the whole process of structure design can be solved. The research of this paper will promote the development of BIM application in the whole industry.
As is normally understood, the forward design is to generate 2D drawings directly form 3D models that conforms to the drawing specifications in each stage, where a rich family library will act as the soul. As a popular modeling software in the civil construction field, Revit acts as a platform serving for various engineering projects with 3D modeling visualization and 2D drawing representation. The Revit models are mainly consisted of elements of the family in the software. This paper starts from the family, the basic element for forward design implementation based on 3D BIM model, and analyzes the functions of existing family bank management tools and the problems existed in decentralized management families. Suggestions on the construction requirements of family bank management tools are put forward, and then demonstrated through a case study of machinery and equipment families. How to improve the maintenance and updating of family components in the operation process of building will be discussed, in order to promote the development of BIM forward design technology by point and area.
With the continuous development of computer processing capability and software functions, applications related to the BIM-based 3D design of the AEC industry been gradually popularized.There have been many practical BIM-based methods in in volume scheme selection, construction submission and concept design, construction drawing design of each specialties, 3D deepening design, and etc.However, it is still difficult to realize the BIM-based forward collaborative design in full-process and multi-professional, and the main reasons are due to the inapplicability of present BIM model storage mode for the traditional design architecture, ineffective resolution results of the BIM models, and inadequately extensive software functions due to over-dependence on foreign BIM software.This paper summarizes the current working situation, analyzes the requirements and challenges from CAD design to BIM forward design, and proposes a "digital-analog separation" BIM forward with relational database+model drawing file manager as the core.The architecture of the design platform uses the architecture to perform separate storage management of non-geometric information such as design results, school approval notes, and progress control.The unique ID values are connected to make the geometric model and non-geometric information combined into an organic whole in order to achieve integrated management.
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