LEE- Proje ve Yapım Yönetimi-Yüksek Lisans

Bu koleksiyon için kalıcı URI

http://hdl.handle.net/11527/19432

Gözat

Konu "building information modeling" ile LEE- Proje ve Yapım Yönetimi-Yüksek Lisans'a göz atma
  • Öge
    An investigation into the current status of adoption of ipd characteristics and bim in construction projects to overcome process and team-related problems
    (Graduate School, 2022-02-09) Çetin, Hakan Taha ; Sertyeşilışık, Begüm ; 502171410 ; Project and Construction Management
    Unless project teams are efficient, construction projects can encounter many problems and obstacles in the process. Project delivery systems (PDS) determine the relationships of project stakeholders and their engagement time. Traditional PDS in the construction industry (CI) are well-known with their adverse effects on the process and the team, which have become the chronic problems of the industry due to excessive use of traditional contracts. Many reasons especially technological advancements like BIM (Building Information Modeling), and demand for more reliable PDSs have led CI professionals to search for alternative and effective ways to collaborate. AIA (the American Institute of Architects) introduced the IPD (Integrated Project Delivery) to respond to the demand and need in the CI. IPD can contribute the CI by eliminating/minimizing the obstacles that prevent team integration. IPD principles have taken their place in the current practices of construction projects, with the effect of same motivations that led to the emergence of the IPD in the first place. Projects are fundamental elements for organizations to cope with competitive market conditions. Various systems, like CSFs (Critical Success Factors), have been developed to evaluate and estimate the projects' outputs appropriately. Although various CSF lists have been prepared in construction projects, the lists prepared for traditional PDSs are not compatible with the IPD because of the different characteristics of the IPD. An IPD-specific CSF list covering the BIM and IPD team aspects is needed to reveal the level of importance of the factors on achieving project success. This dissertation aims to investigate the adoption status of IPD principles in current construction projects, examine the impact of these principles on the process and team-related problems frequently encountered by the industry, and prepare the CSFs preliminary list for IPD projects. With this aim, the following objectives have been adressed: to determine the process and team related problems of the CI and examine their occurrence in construction projects; to determine the adoption of the IPD, BIM and IPD team characteristics in construction projects; and to determine the adoption of the IPD, BIM and IPD team characteristics in construction projects, respectively. With the in-depth literature review, team and process-related problems and characteristics related to IPD, BIM, and IPD teams have been examined. In line with the first two objectives, online questionnaire surveys and interviews have been conducted with IPD and BIM experts and/or academics having publications on related subjects. Furthermore, for the accomplishment of the objectives 3, 4 and 5, the 4-round and 3 group Delphi method has been performed under 3 different category as IPD, BIM, and IPD team-related factors with IPD and BIM experts and/or academics having publications on the related topic. The data obtained from the online questionnaire survey, interviews and the delphi method have been evaluated in 4 different categories based on the objectives of the research. First of all, the findings revealed that the frequency of encountering team-related problems is less frequent than process-related problems. There is strong correlation between ineffective teams and other problems. Furthermore, according to the online questionnaire survey and interviews results, it has been revealed that the adoption status of BIM-related characteristics is high, and BIM is an essential driver for the adoption and implementation of IPD. The CSFs preliminary list has been further developed based on the findings of the 4 round and 3 group delphi surveys covering the aspects of IPD, BIM, and IPD teams. The prepared list has revealed the collaboration-related characteristics of IPD, administrative issues and organizational needs for BIM implementation, and team environment among the main CSFs. The CSFs preliminary list includes the factors that can be taken into account in the adoption and implementation of IPD and BIM projects. The complete application of these factors does not mean that project success can be achieved. Although these CSFs preliminary list may contribute to the process, they cannot influence the projects' output alone as each project consists of several sources and interconnected activities that have varying levels of impact on success. Project dynamics are constantly changing with the effect of new systems. Various additions, corrections, and/or removals can be made to the list over time, taking into account the changing conditions and the needs of projects. These CSFs preliminary list can be used as a preliminary checklist for the stakeholders who plan to adopt the IPD and BIM, and for academics and researchers in the relevant field.
  • Öge
    Digital twin for enhanced construction project management during construction
    (Graduate School, 2022-12-09) Aktürk, Berkay ; Çakmak, Pınar Fatma ; 502191402 ; Project and Construction Management
    The construction industry has a bad reputation worldwide in terms of productivity and efficiency. Insomuch that, it accounts for a large share of global economic costs. Therefore, a proper management is vital for the construction industry. In order to intensify, increase and improve the quality, value and scope of its management approach, the industry has started to seek the solution in digital tools in recent years. The adoption of Building Information Modeling (BIM) by the construction industry has acted as a spur for the attempt to digitize the industry. Thus, fresher, more sophisticated ideas started to emerge. The concept of the digital twin, which made its first waves in a space program, has grown rapidly and quickly entered other industries as well as the construction industry, along with the technological trends related to the Industry 4.0. The digital twin is a virtual system that connects design, construction, and operation by using a combination of technologies to data-link its physical and real assets bidirectionally. While the adoption of BIM in the construction industry is not yet complete, the digital twin is considered a closed box for industry professionals and it does not have many practical applications or case studies. At this point, this thesis research aims to shed a light on the interaction of the digital twin and BIM from a construction project management perspective; to investigate the influences of the digital twin during construction. To answer key questions, -namely (1) "What are the characteristics and practices of the digital twin in the construction industry?"; (2) "What are the functions and applications of the digital twin in the construction from a management perspective?"; (3) "To what extent and how can the digital twin support BIM in the construction?"- a comprehensive synthesis of the literature on the digital twin through the lens of construction project management is carried out as the first step. Scopus database was selected for data extraction by realizing the knowledge gap about the construction, a detailed background analysis was performed to find out the digital twin characteristics, practices, their relationship with BIM, and finally functions and applications of both in construction. As a result of the literature analysis, the topics that can benefit from digital applications within the construction management services provided during the construction phase of the project life cycle are site progress monitoring, resource allocation and waste management, clash detection, decision-making, communication and collaboration, cost management, scheduling, risk management, logistics and supply chain, and safety detection. As the second step, a questionnaire survey was conducted to measure the influence of digital twin services in the literature on parallel BIM uses intending to understanding the importance of these services for professionals. The first part of the questionnaire captures general information about the respondents and the second part gathers information about the influence of Digital Twin services on BIM uses on a 5-point Likert scale (1 = not effective, 5 = extremely effective). The study adopted purposive sampling as the sampling method, 108 industry experts were reached and 70 responses were collected with a response rate of 65%. The data obtained through the questionnaire were analyzed by applying statistical tests through the SPSS 27 program. First, Cronbach's alpha reliability test was used to assess the data's reliability. With a value of 0.893, the study's Cronbach's alpha (α) score was found to be quite acceptable. Secondly, it was observed that the results were normally distributed with the Skewness-Kurtosis normality distribution test, which determined whether the further analyzes would be parametric or not. Third, Pearson's correlation test was applied to measure the relationship between variables. Finally, the variables were divided into meaningful groups in accordance with the aim of the study. Based on experts' opinions, results were analyzed by performing independent-samples t-test and one-way ANOVA. In the scaling of the influence of the specified digital twin services on parallel BIM uses, all services have received mean scores to be considered high. According to the results, the service with the highest impact on BIM applications was communication and collaboration, while logistics and supply chain and safety detection shared the lowest mean score. These findings suggest that digital twin services during construction have a substantial impact on BIM because they transcend beyond their current uses. Additionally, almost all digital twin services that find applications in construction have a high correlation with each other. This is an indication that elements should be considered as a whole and a two-way network for enhanced management during construction. By dividing the participants into two groups, whether they are digital twin users or not, and whether they are domestic or international, it was analyzed whether these aspects affected their perspectives by performing independent sample t-tests. Although there was found a statistically significant difference in the "scheduling" variable between domestic and international participants, the fact that both groups had a high mean score showed that the experts thought that the digital twin had a significant impact on 4D BIM applications. In the first ANOVA test that divided the participants into more than two groups according to their organizational structure, "decision making", "risk management", and "logistics and supply chain" were the digital twin services that have seen a statistically significant difference between groups. Another digital twin service "scheduling", which has seen a significant difference, was observed in analyzes where participants were grouped according to their years of experience. Levene's test was applied to measure the homogeneity of variances related to variables and Games-Howell, Gabriel's and Tukey's post-hoc analyzes were performed to find out which groups caused the identified difference. In addition, even though each group approaches the project with different risks, different objectives and different perspectives, the fact that there are differences of opinion for only a few services in this combination of relationships has been an indication that the positive influence of the digital twin has been accepted by the stakeholders of the industry. This study reviewed and analyzed the characteristics and current applications of technologies and concepts of the digital twin in the construction industry, and has contributed to and strengthened the digital twin body of knowledge which is limited within the construction project management framework. Additionally, by revealing the topics that digital applications can offer benefits within the construction management services provided during the construction phase of the project life cycle; the influence and potential of the digital twin on BIM uses have been demonstrated. Experts agree that digital twin services that offer many uses during the construction go beyond parallel BIM uses and offer several benefits for construction project management. Thus, it has been shown that the digital twin can be a tool for enhanced construction project management, which can get rid of the low efficiency and lack of productivity that the construction industry is still experiencing. This study serves as a source of motivation for researchers working in the field of digital construction and a guide for industry professionals and institutions with question marks about concepts and outcomes.