To apply final as-built BIM models to facility management (FM) during the operation phase, it is important for owners to obtain an accurate, final as-built model from the general contractors (GCs) ...following project closeout. Confirming the accuracy of the final as-built BIM model is one of the most important works executed by owners to meet the accuracy requirement of final as-built models for FM. However, many practical problems arise relating to the management of final as-built models such as final as-built model mismatch, the lack of available final as-built models, and the entry of incorrect non-geometric information into the final as-built models. To solve these practical problems, this study develops a Final As-built BIM Model Management (FABMM) system for owners to handle final as-built BIM model inspection, modification, and confirmation (BMIMC) work beyond project closeout. The proposed approach and system can be used to manage the status and results of BMIMC management work for the final as-built BIM model to be performed. The proposed approach and system were applied in a case study in a selected building in Taiwan to verify and demonstrate its practical effectiveness. This study identifies the benefits, limitations, and conclusions of the FABMM system, and presents suggestions for its further application.
BIM model to support O&M tasks Carvalho, Ana Thereza; Calejo, Rui; Santos, José ...
Journal of information technology in construction,
01/2023, Letnik:
28
Journal Article
Recenzirano
Odprti dostop
Technological evolution and BIM have changed the design development process in the construction industry. The operation and maintenance (O&M) phase requires building information throughout its ...service life, which was previously paper based, making it difficult to carry out maintenance activities. BIM assists in the management, storage, and digital sharing of information generated. However, only part of the information generated is required for the maintenance phase of the building. Although a subset of the IFC schema already exists to describe the data exchange between the BIM model and maintenance software, the data are generic and not well defined according to each the element source of maintenance (ESM). Therefore, through a literature review of existing studies on the use of BIM to support O&M processes, this paper aims to design an information flow to integrate maintenance information into the BIM model. The information is based on six main maintenance acts (inspection, cleaning, proactive measure, correction, replacement, and terms of use) and organized in an external sheet. The building will be divided into ESM according to its function in the building to facilitate the maintenance information flow between sheets and the BIM model.
To improve the accuracy of predicting the shear bearing capacity of prestressed high-strength concrete beams with web reinforcement, shorten the prediction time, and improve the quality of ...engineering construction, a BIM model is proposed to predict the shear bearing capacity of prestressed high-strength concrete beams with web reinforcement. For the first time, specimens of prestressed high-strength concrete beams with web reinforcement were made, and their mechanical performance parameters, test points, and loading schemes were determined; Secondly, use the MCT file in Midas Civil to create a finite element model, and then combine the revit parameter model method to establish a BIM based finite element model; Finally, through the data conversion program between the created Revit model and ANSYS, a BIM based mechanical analysis model is generated to predict the shear bearing capacity of prestressed high-strength concrete beams with web reinforcement. The results show that this method can obtain high-quality three-dimensional renderings, with a standard deviation of 0.118 between the predicted shear bearing capacity and the experimental value, and a prediction time of about 0.5 s, which is lower than the expected results. This method has high prediction accuracy and efficiency, which can provide reliable technical reference for construction projects and improve the safety of building structures.
AbstractIn construction projects, when resources assigned to two or more simultaneous activities share the same workspace, they generate time-space conflicts associated with congestion, safety, and ...quality issues. The use of building information modeling (BIM) methodologies, particularly four-dimensional (4D) models, offers the possibility to facilitate the identification of these types of conflicts. Existing literature has proposed formal methods for conflict detection; however, these largely focus on automating computational analyses without providing a practical and useful procedure for planners. Moreover, previous research has not evaluated the impact of using formal conflict detection methodologies. To address these gaps, this study proposes and evaluates the use of a formal conflict detection methodology in workspaces based on 4D-BIM. The research methodology includes a first stage that develops and validates the formalized conflict detection methodology through a literature review and interviews with field professionals. The second stage quantifies the impact of using the proposed methodology through an experiment that compares the effectiveness and efficiency of a group of planners in detecting conflicts using 4D-BIM models with and without the proposed methodology. The results demonstrate that the formalized methodology enhances the planning process by increasing the detection of conflicts from 18% to 82%. Additionally, the formalized methodology reduces review time by 23% and enhances user experience. These findings contribute to improving the planning process by managing and reducing time-space conflicts in construction schedules. Consequently, the construction process will become more efficient by averting issues related to productivity, safety, and quality based on the identification of workspace conflicts. Last, the proposed methodology contributes to a better adoption of BIM by providing a structured procedure for using the 4D-BIM model to support planning processes.
Practical ApplicationsThis study lays the groundwork for companies aiming to enhance their conflict detection processes and refine planning and conflict management procedures. The practical contributions include achieving greater effectiveness and efficiency in identifying conflicts in workspaces. The proposed formalized methodology enhances productivity, reduces safety-related risks, and prevents quality issues in building projects by managing and mitigating time-space conflicts in construction programs. Additionally, the research contributes to the enrichment of BIM application in construction activity planning. It formalizes the use of BIM through a conflict detection methodology, particularly in the analysis of construction programs and the identification of workspace conflicts. The results further strengthen the application of the BIM methodology by facilitating the design of BIM processes associated with planning, incorporating the methodology proposed in this research. Furthermore, the study encourages the adoption of BIM in construction activity planning by evaluating the positive impact of the proposed formalized methodology, providing evidence for its implementation in organizations and highlighting its potential benefits in terms of effectiveness and efficiency.
•A BIM and knowledge graph-based framework for automatic model auditing and QTO.•A data model and mechanisms to obtain graph representations and embeddings from BIM.•An improved transR model to ...obtain better knowledge graph embeddings.•A self-evolving mechanism to automatically determine mistake elements.•100% sensitivity and 94% specificity on average in testing BIM models.
Model auditing is a critical step before conducting Building Information Modeling (BIM)-based Quantity Take-off (QTO) because these models may contain various human errors and mistakes, leading to insufficient semantic information and inconsistent modeling style in BIM models. The traditional object-oriented approach has difficulties in representing unstructured BIM data (e.g., interrelationships), while rule-based methods involve tremendous human efforts to develop rule sets, lacking flexibility for different requirements. Therefore, this study aims to establish a novel data-driven framework based on BIM and knowledge graph (KG) to represent unstructured BIM data for automatic inferences of auditing results of BIM model mistakes. It starts by establishing a BIM-KG data model via identifying required information for auditing purposes. Subsequently, BIM data is automatically transformed into the BIM-KG representations, the embeddings of which are trained using a knowledge graph embedding model. Automatic mechanisms are then developed to utilize the computable embeddings to effectively identify mistake BIM elements. The framework is validated using illustrative examples and the results show that 100% mistake elements can be identified successfully without human intervention.
To deeply analyze the performance of paper-cutting elements in interior space design, this paper explores the artistic expression of paper-cutting elements. The BIM model is constructed based on the ...TVL algorithm, and a noise-reducing style migration method with an additional total variable loss function is used to fuse the texture features of a specific paper-cutting style so that the paper-cutting texture is generated in the target object area more intensively. The algorithm is supplemented with a U-shaped network structure to obtain the mask map of the target object, modify and expand the ScanNet training data set, and input a content map and a style map to generate the stylized paper cutout image automatically. The results show that compared with other elements, the stability of paper-cut elements reaches 96.31%, the image smoothness reaches 89.34%, and the retention of significant regions reaches 93.26%. In modern design, the peak signal-noise of paper-cut elements improved by 13.418d on average, the structural similarity also improved by 0.34807, and the recognition rate of paper-cut elements in the furnishing category reached 95%. Applying paper-cut art in interior space design can give interior furnishing design better visual effects, provide inspiration and ideas for interior space design innovation, and contribute to improving aesthetics.
The complicated requirements of projects and the increasing number of project participants have resulted in numerous, iterative BIM data exchange processes for diverse domain professionals. When BIM ...data are imported into and exported from BIM authoring tools, the seamless sharing and consistent maintenance of BIM data throughout a building project require homogeneous BIM data exchange standards and robust validation frameworks. Several versions of the Industry Foundation Class (IFC) schema provide the schematic foundation of BIM data exchange standards. In addition, diverse disciplines have developed the Model View Definition (MVD), which refers to data exchange specifications defined as a subset of the IFC schema. However, BIM data validation against the requirements of the MVD and the limitations of this data evaluation process have not been thoroughly investigated, which results in syntactic problems, semantic errors, and unintended geometrical transformation. In an effort to address these issues, the research study involves the development of the MVD-based rule-checking features on the IfcDoc tool and includes the in-depth discussion of the complexity and challenges of BIM data validation following the Precast Concrete National BIM Standard. In addition, this paper describes identified knowledge regarding BIM data validation using the MVD relating to procedures, scope, and complexity, and includes the challenges and limitations of automated rule-based BIM data checking to which future researchers can refer in order to avoid revealed problems in their MVD development and evaluation processes.
•Challenges and limitations in validating Building Information Modeling data•Rule checking processes pertaining to MVD criteria•Approaches to improve the interoperable environment of BIM data•Implementation of an MVD validation process and its case study•Recommendations for advanced BIM validation processes to avoid MVD checking problems
In recent years, scaffolding has been widely used in construction in advanced industrial countries in Europe, the Americas, and Asia as a temporary facility for new construction and demolition ...projects. However, in the complex environment of a construction site, temporary facilities such as scaffolding are only managed by the governments of these various countries via the legal system and are inspected through manual observation, resulting in numerous occupational hazards. Today, the lack of attention to temporary structures such as multi-degree-of-freedom discrete structures (e.g. scaffolding) has resulted in a failure to effectively improve the safety, quality, and performance of scaffolded temporary structures. In this study, the scaffolding system of a costly construction site in Taiwan is used as a case study. A BIM model of scaffolding is built based on the unique geographical location of Taiwan and external factors such as earthquakes and typhoons. The study even uses ETABS structural software to identify the structure of scaffolding and analyze the important monitoring points in order to establish a 'scaffolding intelligent monitoring system' to effectively control the hazards of scaffolding as a medium, thus achieving the goal of construction safety during construction phase.
At present, the information management of highway construction is still at different levels. Poor information coordination ability. Lack of adequate information technology support. BIM technology is ...used to realize cooperation and information integration among various disciplines. According to the characteristics of highway construction, this paper constructs the decomposition code of the BIM model by the particle swarm method. This model can better reflect the whole process of highway project cost control characteristics. The corresponding relationship between the “three-level list” and the BIM code is constructed. This paper makes a comprehensive analysis and discussion on the mapping between it and the “item list” in the three types of lists. Thus, BIM can be efficiently connected with the three-level list in the construction of bridge projects. It can better adapt to engineering construction and other engineering management requirements.
