Papers by Amirhooshang Fakhimi
Proceedings of the 33rd International Symposium on Automation and Robotics in Construction (ISARC)
As buildings have become more complex, the construction industry has become more specialized, but... more As buildings have become more complex, the construction industry has become more specialized, but it is under greater pressure to become more efficient, productive and integrated. Thus, all recent and novel attempts including Lean Construction (LC) philosophy, Integrated Project Delivery (IPD) method and recently Building Information Modeling (BIM) technology are greatly aiding to improve productivity and efficiency via enhanced collaboration and integration. They have been very useful and resulted many benefits, but their drawbacks and challenges prevent them to take fully satisfying results from their individual implementation. The objective of this paper is to investigate if LC, IPD and BIM can play all together complementary and synergistically, then to draw benefits and challenges of their collaboration. The research is archival in nature and an extensive literature review has been conducted on the implementation of LC, IPD and BIM in the complex project settings. No trilateral collaboration is found and so this study is focused on bilateral collaboration experiences to perceive the demarche of their combination. This paper presents a combination scheme for LC, IPD and BIM in an effort to provide pragmatic solutions to the complex project problems. Challenges, which need to be addressed, are also highlighted.
Science and Technology for the Built Environment , 2017
Construction industry in comparison to other industries has achieved less productivity and effect... more Construction industry in comparison to other industries has achieved less productivity and effectivity during the last few decades. Lean Construction (LC) philosophy, Integrated Project Delivery (IPD) method and recently Building Information Modeling (BIM) technologies helped raising the productivity and effectivity of the construction industry via introducing new and improved processes. Adopting and implementing BIM provides accurate digital information to undertake efficient and effective planning and execution of the complex construction projects. Today, use of BIM in architecture, engineering and construction (AEC) industries has been institutionalized insofar as some developed countries developed their BIM guidelines and instructions. It is believed that BIM as a mighty conceptual strategy could be implemented in the lifecycle of Non-Building projects, too. To steer the researchers and practitioners' directions, this paper aims to explain capabilities of BIM when used for Non-Building projects especially in the process plants and the Oil, Gas and Petrochemical (OGP) projects. To achieve the mentioned goals, a widespread literature survey on adopting and implementing BIM in the AEC industry lifecycle including the benefits, barriers and challenges as well as expert interviews with OGP industry firms were conducted. Finally, Challenges and prerequisites that should be addressed before getting full benefits of BIM in the OGP industry are highlighted.
As buildings have become more complex, the construction industry has become more specialized, but... more As buildings have become more complex, the construction industry has become more specialized, but it is under greater pressure to become more efficient, productive and integrated. Thus, all recent and novel attempts including Lean Construction (LC) philosophy, Integrated Project Delivery (IPD) method and recently Building Information Modeling (BIM) technology are greatly aiding to improve productivity and efficiency via enhanced collaboration and integration. They have been very useful and resulted many benefits, but their drawbacks and challenges prevent them to take fully satisfying results from their individual implementation. The objective of this paper is to investigate if LC, IPD and BIM can play all together complementary and synergistically, then to draw benefits and challenges of their collaboration. The research is archival in nature and an extensive literature review has been conducted on the implementation of LC, IPD and BIM in the complex project settings. No trilateral collaboration is found and so this study is focused on bilateral collaboration experiences to perceive the demarche of their combination. This paper presents a combination scheme for LC, IPD and BIM in an effort to provide pragmatic solutions to the complex project problems. Challenges, which need to be addressed, are also highlighted.
Conference Presentations by Amirhooshang Fakhimi
Optimisation has attracted the attention of human since ancient times, during which the activitie... more Optimisation has attracted the attention of human since ancient times, during which the activities were inconsiderable and resources were unlimited. Extension of activities and their cost, time and resources limitations have caused researchers pay their attention to optimising the activities. Optimum alternative should be feasible, economical, functional and effective as possible. "Structural optimisation" is the technical term for the application of optimisation on structures. The last decades has seen a rapid development in optimisation techniques to solve related problems in structural design. However, recent surveys have shown insufficient penetration of optimisation methods in concrete structures. Due to the complexities of the design and construction of structures, optimisation techniques faced serious obstacles until the modern (meta-heuristic) methods of optimisation were developed. Applying such methods became quite widespread in various problems, including those of concrete structures, the optimisation of which were highly problematic and sometimes impossible before the introduction of these methods. The goal of concrete structure optimisation is often the minimization of the costs including the costs of concrete material, reinforcing bars, formwork, and pre-stressed cables. In a limited number of cases, the geometry and shape of structures were optimised. In this paper, an updated and extensive literature review is presented and due to the wide variety of meta-heuristic algorithms, appropriate concrete structure optimisation algorithms for practical practitioner are addressed. This research illustrated shortage of the concrete structure optimisation cases, researches and required direction of future studies in this regards. Researchers have been seeking the best responses to human problems for ages and optimization has been utilized as a set of principles and approaches to find the most appropriate answer in this regard. Approaches applied in optimization of complex problem have been developed through knowledge improvements. Meta-heuristics algorithms (MAs) are the latest category of approaches used by researchers to optimize complex and non-linear polynomial (NP-Hard) problems. These approaches are not able to provide global optimum, but they provide an acceptable solution for problems at a reasonable cost in a short time. Main difference of various meta-heuristic methods is their ability to solve certain types of problems and achieve closer answer to the global optimum at a lower cost in a shorter time (Cercevic,2014). Today, application domain of optimization techniques has been spread due to the development of knowledge and computer numerical analysis techniques; so that optimization objectives have changed from one target to multiple targets and subjects of problems have got closer to the reality. In primary problems, the main purpose of optimization solving problem was finding the minimum weight, while structural optimization is not only aimed at the weight and factors such as construction cost, time and quality, different construction methods, etc. could also be considered as objects. The development and many introduced techniques have caused a difficulty in selecting appropriate MAs to optimize a problem. Lots of existing methods (Figure 1), the diversity of their names (Table 1) and the provision of new algorithms have made the user confuse while solving a optimization problem; so that selection of appropriate algorithm for a
, Javad Majrouhi Sardrood, Ali mazrouie,S.R. Ghoreishi and S. Azhar The construction industry has... more , Javad Majrouhi Sardrood, Ali mazrouie,S.R. Ghoreishi and S. Azhar The construction industry has become more complex and endeavoured to become more efficient, productive and integrate through intensified collaboration and integration. Integrated Project Delivery (IPD) attempts to overcome fragmentation of the construction process and almost in parallel Lean Constriction (LC) make an effort to eliminate project's waste to bridge this gap. Recently Building Information Modeling (BIM) technologies are greatly aiding to improve productivity and efficiency. They are implemented individually and even side by side. From them, IPD has made an appropriate contractual infrastructure and claimed to utilize LC and BIM. The objective of this paper is to investigate if IPD made adequate infrastructure to incorporate LC and BIM , then to draw benefits and challenges of this connection and collaboration. The research is archival in nature and an extensive literature review has been conducted on the implementation of IPD, LC and BIM in the complex project settings. No IPD formation that joined LC and BIM is found , this study is focused to perceive the demarche of IPD and its incorporation with LC and BIM. This paper used from purposed combination scheme combining IPD , LC and BIM to show readiness of IPD to utilizing LC and BIM for improving the complex project problems. Perquisites and challenges, which need to be addressed, are also highlighted.
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Papers by Amirhooshang Fakhimi
Conference Presentations by Amirhooshang Fakhimi