scholarly journals 4D modelling using virtual collaborative planning and scheduling

2021 ◽  
Vol 26 ◽  
pp. 763-782 ◽  
Author(s):  
Mikael Viklund Tallgren ◽  
Mattias Roupé ◽  
Mikael Johansson

During the last decades, the introduction of Building Information Models (BIM) has opened new possibilities to ensure better communication and a shared understanding between stakeholders in construction projects. Similar benefits have been found in 4D simulations of the schedule. While BIM and 4D use has seen a steady increase, the potential benefits have not fully been realised, primarily due to tools not supporting and enabling the full potential of collaborative stakeholder involvement in scheduling. The benefits of 4D simulations come from improving communication between stakeholders. While traditional 4D modelling connects an existing BIM model with an existing schedule, a move from this type of passive 4D visualisation toward social co-creation enables all stakeholders to be involved in the scheduling process. This connection is further enhanced with the use of Virtual Reality (VR). Recent research has shown VR to enhance understanding and perception of the space and details and, thus, a better understanding of the project. This paper maps collaborative planning and scheduling method and traditional 4D scheduling using process modelling. This mapping is followed by implementing the 4D collaborative planning and scheduling method in the virtual project planning system with support for a multi-user interactive VR environment. The system enables social co-creation both during the planning and scheduling and during 4D modelling; it improves understanding of the project and the planning and scheduling.

2006 ◽  
Vol 33 (9) ◽  
pp. 1172-1194 ◽  
Author(s):  
Rong-yau Huang ◽  
Kuo-Shun Sun

Most construction repetitive scheduling methods developed so far have been based on the premise that a repetitive project is comprised of many identical production units. Recently, Huang and Sun (2005) developed a workgroup-based repetitive scheduling method that takes the view that a repetitive construction project consists of repetitive activities of workgroups. Instead of repetitive production units, workgroups with repetitive or similar activities in a repetitive project are identified and employed in the planning and scheduling. The workgroup-based approach adds more flexibility to the planning and scheduling of repetitive construction projects and enhances the effectiveness of repetitive scheduling. This work builds on previous research and develops an optimization model for workgroup-based repetitive scheduling. A genetic algorithm (GA) is employed in model formation for finding the optimal or near-optimal solution. A chromosome representation, as well as specification of other parameters for GA analysis, is described in the paper. Two sample case studies, one simple and one sewer system project, are used for model validation and demonstration. Results and findings are reported.Key words: construction scheduling, repetitive project, workgroup, optimization, genetic algorithm.


2021 ◽  
Vol 8 (7) ◽  
pp. 491-498
Author(s):  
Ahmad Sholichan ◽  
Albert Eddy Husin

Time delays and cost overrun are still a "scourge" in construction projects. The most important factors that cause these two risks are ineffective project planning and scheduling, and inaccurate quantity taking off. Thus, it is most appropriate to carry out mitigation since the project planning period. With the fact of increasing stadium construction in various countries, with iconic and futuristic design, and containing national pride, must be a serious concern so that the risk of time delay & cost overrun can be reduced. Because stadiums are like that usually involve a complex structural system, complicated installation technique with strict network diagrams. The M-PERT & BIM 5D - Based Quantity Take Off method has the potential to mitigate and minimize this risk. This study, with the RII simulation, reveals the critical success factor for applying the potential of this method, especially in stadium structural work. These factors can become a serious concern for construction practitioners, especially in Indonesia, who are and will build stadium projects. Keywords: Structure; Stadium; M-PERT; BIM 5D; RII.


Author(s):  
Sudarshan S ◽  
Geena George

Planning and scheduling is extremely important role in construction projects thank to the increasing difficulties during this field. Construction Planning is that the necessary warning to Scheduling and determining general sequence, defining labour tasks, construction methods and assigning responsibilities, inappropriate planning can cause major delays with the project work. For the planning and scheduling work requires huge amount of  paperwork, which makes the management very burdensome. These problems may be solved employing a  project management software which helps to grant a planned approach to planning. Nowadays use of project management (PM) software as a tool for managing and organizing work has gained its importance in construction industry and continues to grow at a faster pace in other industries also. During this study, attempt is made  to check project management software such as MS project and Primavera and their feasibility is studied.


1983 ◽  
Vol 20 (04) ◽  
pp. 332-347
Author(s):  
Henry Chen ◽  
Phil Rawstron

Methods of simulating offshore construction project activities and associated weather-related downtime are reviewed. Specific attention is given to the use of network modeling techniques to determine probable durations and risk levels for complex marine projects such as the installation of the first guyed tower production platform, and offshore mating of HIDECK, a barge-mounted integrated oil production facility with a preinstalled platform. Monte Carlo simulation techniques are used to select random variables. The environmental data derived from a spectral ocean wave model are used, while full account is taken of hydrodynamic response of the offshore systems in order to establish the limiting sea states for performing specific construction operations. Environmental data sources for such simulations are reviewed. Various methods used to determine limiting sea states are compared. The results of statistical analysis of offshore construction operations, such as module lifting, pipelaying, and saturation diving, are presented to give insight into the limitations on vessel motions during offshore construction. In summary, this paper provides a review of methodologies and data used in performing operability analyses, in order to assist engineers in assessing duration and risk for offshore construction projects.


Symmetry ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 161
Author(s):  
Xuezhang Mao ◽  
Jinghua Li ◽  
Hui Guo ◽  
Xiaoyuan Wu

In the current distributed manufacturing environment, more extensive enterprise cooperation is an effective means for shipbuilding companies to increase the competitiveness. However, considering the project scale and the uneven production capacity between the collaborative enterprises, a key issue for shipbuilding companies is to effectively combine the product-oriented project tasks and the specialized production-oriented plants. Due to information privatization, the decision-making process of project planning and scheduling is distributed and symmetric. Existing project scheduling methods and collaboration mechanisms in the shipbuilding industry are somehow inefficient. The aim of the research is to provide an assistant decision-making method to support effective task dispatching and multi-party cooperation for better utilization of the distributed resources and to help project managers control the shipbuilding process. The article initially establishes an agent-based complex shipbuilding project collaborative planning and symmetric scheduling framework, simulating the distributed collaborative decision-making process and bridging the multi-project planning with the individual project scheduling in much detail, which fills the research gap. A negotiation method based on iterative combination auction (ICA) is further proposed to solve the integration problem of project planning and task scheduling, and an illustrative example is conducted to demonstrate the effectiveness and rationality of the methods. Finally, an application case using a prototype system on shipbuilding projects collaborative planning and scheduling will be reported as a result.


Author(s):  
Mulenga Mukuka ◽  
Clinton Aigbavboa ◽  
Wellington Thwala

There are many factors that contribute to the causes of schedule overruns in construction projects. This ranges from factors inherent in the technology and its management, to those resulting from the physical, social, and financial environment. Schedule overruns can give rise to disruption of work and loss of productivity, late completion of project, increased time related costs and third party claims and abandonment or termination of contract. Schedule overruns are costly and often result in disputes and claims. Hence, the need to identify mitigation measures of construction projects overruns that will bring about the timely delivery of construction projects. This paper assesses the measures to mitigate against construction projects schedule overruns in the Gauteng Province construction industry in South African. The data used in this paper were derived from both primary and secondary sources. The primary data were collected through a questionnaire distributed to construction professionals in the study area. Data received from the questionnaires were analyzed using descriptive statistics procedures. Findings revealed that proper project planning and scheduling, effective strategic planning, site management and supervision, amongst others, were the major mitigation measures of construction projects schedule overruns in the Gauteng Province of South Africa. This study contributes to the body of knowledge on the subject of the measures of mitigating against construction project schedule overruns in the Gauteng Province construction industry.


The variants of the division of the life cycle of a construction object at the stages adopted in the territory of the Russian Federation, as well as in other countries are considered. Particular attention is paid to the exemplary work plan – "RIBA plan of work", used in England. A feature of this document is its applicability in the information modeling of construction projects (Building information Modeling – BIM). The article presents a structural and logical scheme of the life cycle of a building object and a list of works that are performed using information modeling technology at various stages of the life cycle of the building. The place of information models in the process of determining the service life of the building is shown. On the basis of the considered sources of information, promising directions for the development of the life cycle management system of the construction object (Life Cycle Management) and the development of the regulatory framework in order to improve the use of information modeling in construction are given.


2020 ◽  
Vol 53 (2) ◽  
pp. 10761-10766
Author(s):  
Walid Elmughrabi ◽  
Oumaima Ben Sassi ◽  
Thien-My Dao ◽  
Amin Chabaane

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