The LP/IP hybrid method for construction time-cost trade-off analysis

Burns, Scott; Liu, Liang Y.; Feng, Chung Wei

doi:10.1080/014461996373511

Cited by 93 publications

(41 citation statements)

References 7 publications

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“…The model derives the schedule for equipment rental and transient resources and can be used as an estimating method for multi-project resource planning and sharing. Burns et al (1996) present an algorithm using integer linear programming to efficiently obtain optimal resource selection that optimizes time/cost of construction project. Feng et al (1997) present a genetic algorithm based heuristic for construction Time-cost trad-off optimization.…”

Section: Literature Reviewmentioning

confidence: 99%

Integrated multi-resource planning and scheduling in engineering project

Issa¹,

Tu²

2017

10.5267/j.jpm

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Planning and scheduling processes in project management are carried out sequentially in practice, i.e. planning project activities first without visibility of resource limitation, and then scheduling the project according to these pre-planned activities. This is a need to integrate these two processes. In this paper, we use Branch and Bound approach for generating all the feasible and non-feasible project schedules with/without activity splitting, and with a new criterion called "the Minimum Moments of Resources Required around X-Y axes (MMORR)", we select the best feasible project schedule to integrate plan processing and schedule processing for engineering projects. The results illustrate that this integrated approach can effectively select the best feasible project schedule among alternatives, improves the resource utilization, and shortens the project lead time.

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Section: Literature Reviewmentioning

confidence: 99%

Integrated multi-resource planning and scheduling in engineering project

Issa¹,

Tu²

2017

10.5267/j.jpm

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“…In addition, the method is currently only applicable to repetitive activities, that is, those one-off activities need to be dealt with separately. Burns et al (1996) propagated a hybrid optimization approach that integrates LP and IP for determining the time-cost trade-off solution of a construction scheduling problem. The method is applied in two stages: (1) using LP to generate a lower bound of the minimum direct curve; and (2) using IP to find the exact solutions.…”

Section: Subject Tomentioning

confidence: 99%

A review of methods and algorithms for optimizing construction scheduling

Zhou

Love

Wang

et al. 2013

Journal of the Operational Research Society

117

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Optimizing construction project scheduling has received a considerable amount of attention over the past 20 years. As a result, a plethora of methods and algorithms have been developed to address specific scenarios or problems. A review of the methods and algorithms that have been developed to examine the area of construction schedule optimization (CSO) is undertaken. The developed algorithms for solving the CSO problem can be classified into three methods: mathematical, heuristic and metaheuristic. The application of these methods to various scheduling problems is discussed and implications for future research are identified.

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“…The project manager is faced with a problem of wellbalancing between time and cost criteria. The interdependence of these two elements represents a challenge for the planners to organize project activities and find a plan which will optimize the time-cost ratio [8]. Primarily, they must opt for one of the project scheduling approaches: non-delay approach, based on the activity execution of the project estimated time without deferring other activities or delay approach, based on delaying non-critical activities using their slack (float) [9].…”

Section: Introductionmentioning

confidence: 99%

Minimization of direct costs in the construction of torrent control structures

et al. 2017

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Original scientific paperThe most important elements in the planning of the implementation of the torrent (flood) control projects which need to be estimated are time, costs (budget) and resource required. These three elements are interactive: a shorter duration of structure construction causes additional resources engagement and increased costs, and vice versa -greater costs provide a shorter duration of construction. This paper analysis direct project cost minimization for four torrent control projects. The construction duration and the dynamic plan of project activities have been determined using the CPM method of network planning. The optimization problem -minimization of direct cost of construction subject to constraints such as: given deadline, precedence constraints, and upper and lower bounded duration time of activities is solved using linear programming and Matlab toolbox. Our results show that applied methods ensure significant cost savings, which is an important challenge in the construction management. Keywords: cost minimization; CPM method; linear programming; torrent control Minimiziranje direktnih troškova izgradnje objekata za zaštitu od poplavaIzvorni znanstveni članak Najvažniji elemeni u planiranju provedbe projekata kontrole od bujica (poplava) su procjena vremena, troškova (buđžeta) i resursa. Ova tri elementa su interaktivna: kraće trajanje izgradnje strukture uzrokuje angažman dodatnih resursa i povećanje troškova i obrnuto, veći troškovi dovode do kraćeg trajanja gradnje. Ovaj rad se bavi minimiziranjem direktnih troškova projekta na primjeru četiri projekta kontrole bujičnih poplava. Trajanje gradnje i dinamički plan projektnih aktivnosti su određeni pomoću CMP metode mrežnog planiranja. Optimizacijski problem -minimiziranje direktnih troškova gradnje, uz ograničenja kao što su: zadan rok, redoslijed aktivnosti, gornja i donja ograničenja vremena trajanja aktivnosti, riješen je primjenom linearnog programiranja i sučelja Matlaba. Dobiveni rezultati pokazuju da primijenjene metode osiguravaju značajne uštede što je važan izazov organizacije građenja.

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The LP/IP hybrid method for construction time-cost trade-off analysis

Cited by 93 publications

References 7 publications

Integrated multi-resource planning and scheduling in engineering project

Integrated multi-resource planning and scheduling in engineering project

A review of methods and algorithms for optimizing construction scheduling

Minimization of direct costs in the construction of torrent control structures

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