scholarly journals The Use of Unmanned Aerial Vehicles for Dynamic Site Layout Planning in Large-Scale Construction Projects

Buildings ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 602
Author(s):  
Ahmed W. A. Hammad ◽  
Bruno B. F. da Costa ◽  
Carlos A. P. Soares ◽  
Assed N. Haddad
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Construction Projects ◽  
Large Scale ◽  
Mixed Integer ◽  
Transport Costs ◽  
Construction Operations ◽  
Layout Planning ◽  
Mip Model ◽  
Aerial Vehicles ◽  
Site Layout

Construction sites are increasingly complex, and their layout have an impact on productivity, safety, and efficiency of construction operations. Dynamic site layout planning (DSLP) considers the adjustment of construction facilities on-site, on an evolving basis, allowing the relocation of temporary facilities according to the stages of the project. The main objective of this study is to develop a framework for integrating unmanned aerial vehicles (UAVs) and their capacity for effective photogrammetry with site layout planning optimisation and Building Information Modelling (BIM) for automating site layout planning in large construction projects. The mathematical model proposed is based on a mixed integer programming (MIP) model, which was employed to validate the framework on a realistic case study provided by an industry partner. Allocation constraints were formulated to ensure the placement of the facilities in feasible regions. Using information from the UAV, several parameters could be considered, including proximity to access ways, distances between the facilities, and suitability of locations. Based on the proposed framework, a layout was developed for each stage of the project, adapting the location of temporary facilities according to current progress on-site. As a result, the use of space was optimised, and internal transport costs were progressively reduced.

scholarly journals Conflicts resolution based construction temporary facilities layout planning in large-scale construction projects

2016 ◽  
Vol 43 (9) ◽  
pp. 783-801 ◽  
Author(s):  
Xiaoling Song ◽  
Jiuping Xu ◽  
Charles Shen ◽  
Feniosky Peña-Mora
Keyword(s):  
Construction Projects ◽  
Large Scale ◽  
Significant Contribution ◽  
Scale Construction ◽  
Construction Operations ◽  
Layout Planning ◽  
Solution Approach ◽  
Facilities Layout ◽  
Conflicts Resolution ◽  
Level Model

The construction temporary facilities layout planning (CTFLP) is important and complex in large-scale construction projects. During the CTFLP process, the general contractor has conflicts with many subcontractors regarding other pre-planning tasks, such as the transport routes planning (TRP). The resolution of the conflicts is crucial and this study attempts to determine the CTFLP considering conflicts resolution. Specifically, a novel methodology based on conflicts resolution between the CTFLP and the TRP is proposed, which can be adapted for future CTFLP based on resolving other types of conflicts. The two procedures-based methodology is composed of a bi-level model and a solution approach. The methodology is applied to a dam construction project in China to test the applicability, and the results show that it is able to obtain a satisfactory CTFLP and prevents some crucial conflicts, thus, promoting construction operations and making a significant contribution to the practice of construction projects.

scholarly journals Route Planning of Unmanned Aerial Vehicles under Recharging and Mission Time Constraints

2021 ◽  
Vol 6 (5) ◽  
pp. 1439-1459
Author(s):  
Kriangsak Phalapanyakoon ◽  
Peerapon Siripongwutikorn
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Large Scale ◽  
Programming Model ◽  
Route Planning ◽  
Time Constraint ◽  
Mixed Integer ◽  
Small Scale ◽  
Model Parameters ◽  
Aerial Vehicles ◽  
Mission Time

This paper investigates the problem of route planning for rechargeable unmanned aerial vehicles (UAV) under the mission time constraint in cases where more than one trip per round is required due to limited battery capacities. The goal is to determine the number of UAVs to be deployed and the flying paths that minimize the total mission cost. Unlike previous works, the electric cost incurred by UAV recharging proportional to actual flying distances is incorporated into our model. The problem is formulated as a mixed-integer programming model to minimize the sum of electric charging cost, the UAV usage cost, and the penalty cost from the violation of the mission time constraint. Extensive numerical experiments are conducted to examine the integrity and performance of the proposed model under various model parameters and deployment scenarios in grid areas and a real terrain area. The optimal solutions can be obtained for small-scale problem instances in a reasonable runtime. For large-scale problems, only feasible solutions can be obtained due to limited computational resources.

Revealing Safety Risks of Unmanned Aerial Vehicles in Construction

2021 ◽  
pp. 036119812110171
Author(s):  
Mostafa Namian ◽  
Mohammad Khalid ◽  
George Wang ◽  
Yelda Turkan
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Construction Projects ◽  
The United States ◽  
Extensive Literature ◽  
Effective Strategies ◽  
Aerial Vehicles ◽  
Safety Risks ◽  
Potential Safety ◽  
Post Hoc

Unmanned aerial vehicles (UAVs) have gained their prevalent recognition in construction because of their exceptional advantages. Despite the increasing use of UAVs in the industry and their remarkable benefits, there are serious potential safety risks associated that have been overlooked. Construction is one of the most hazardous industries in the United States. In addition to the ordinary hazards normally present in dynamic construction workplaces, UAVs can expose workers to a wider range of never-before-seen safety risks that must be recognized and controlled. The industry is not equipped with safety measures to prevent potential accidents, because of scarce research on drone-associated hazards and risks. The aim of this research was to (1) identify the UAV-associated hazards in construction that may expose personnel and property to potential harms, and (2) study the relative impact of each hazard and the associated safety risks. In Phase I, the researchers conducted an extensive literature review and consulted with a construction UAV expert. In Phase II, the researchers obtained data from 54 construction experts validating and evaluating the identified hazards and risks. The results revealed that adopting UAVs can expose construction projects to a variety of hazards that the industry is not familiar with. “Collision with properties,”“collision with humans,” and “distraction” were identified as the top three safety risks. Moreover, the study introduces effective strategies, such as having qualified crew members, proper drone model selection, and drone maintenance, to mitigate the safety risks. Finally, a post-hoc case study was investigated and presented in this article.

scholarly journals Methodological Ambiguity and Inconsistency Constrain Unmanned Aerial Vehicles as A Silver Bullet for Monitoring Ecological Restoration

2019 ◽  
Vol 11 (10) ◽  
pp. 1180 ◽  
Author(s):  
Todd M. Buters ◽  
Philip W. Bateman ◽  
Todd Robinson ◽  
David Belton ◽  
Kingsley W. Dixon ◽  
...  
Keyword(s):  
Machine Learning ◽  
Unmanned Aerial Vehicles ◽  
Ecological Restoration ◽  
Large Scale ◽  
Ecological Monitoring ◽  
Policy Framework ◽  
Strong Positive Correlation ◽  
Aerial Vehicles ◽  
The Future ◽  
Thermal Cameras

The last decade has seen an exponential increase in the application of unmanned aerial vehicles (UAVs) to ecological monitoring research, though with little standardisation or comparability in methodological approaches and research aims. We reviewed the international peer-reviewed literature in order to explore the potential limitations on the feasibility of UAV-use in the monitoring of ecological restoration, and examined how they might be mitigated to maximise the quality, reliability and comparability of UAV-generated data. We found little evidence of translational research applying UAV-based approaches to ecological restoration, with less than 7% of 2133 published UAV monitoring studies centred around ecological restoration. Of the 48 studies, > 65% had been published in the three years preceding this study. Where studies utilised UAVs for rehabilitation or restoration applications, there was a strong propensity for single-sensor monitoring using commercially available RPAs fitted with the modest-resolution RGB sensors available. There was a strong positive correlation between the use of complex and expensive sensors (e.g., LiDAR, thermal cameras, hyperspectral sensors) and the complexity of chosen image classification techniques (e.g., machine learning), suggesting that cost remains a primary constraint to the wide application of multiple or complex sensors in UAV-based research. We propose that if UAV-acquired data are to represent the future of ecological monitoring, research requires a) consistency in the proven application of different platforms and sensors to the monitoring of target landforms, organisms and ecosystems, underpinned by clearly articulated monitoring goals and outcomes; b) optimization of data analysis techniques and the manner in which data are reported, undertaken in cross-disciplinary partnership with fields such as bioinformatics and machine learning; and c) the development of sound, reasonable and multi-laterally homogenous regulatory and policy framework supporting the application of UAVs to the large-scale and potentially trans-disciplinary ecological applications of the future.

scholarly journals Economic efficiency of innovations in construction: the use of the pilotless equipment

2018 ◽  
Vol 251 ◽  
pp. 05006
Author(s):  
Maxim Kristal ◽  
Tatiana Kisel
Keyword(s):  
Automatic Control ◽  
Unmanned Aerial Vehicles ◽  
Fuel Consumption ◽  
Economic Efficiency ◽  
Construction Projects ◽  
Modern Science ◽  
Road Construction ◽  
Accident Rate ◽  
Aerial Vehicles ◽  
Human Labour

The developments in the field of pilotless transport and equipment act as one of the modern and most perspective directions of the development of modern science and technology. The vehicles, equipped with the system of automatic control, are able to move in the space on the basis of the set algorithm of actions and the instant analysis of the surrounding situation. Thus, they have great prospects of the use in various spheres and will allow to lower the expenses of human labour, accident rate and fuel consumption. The identification of prospects and directions of the use of the pilotless and automated vehicles in construction projects is carried out in this article on the example of road construction. Studying of the existing developments of the pilotless equipment has already allowed to simulate the process of carrying out some earthwork with the use of (Unmanned aerial vehicles) UAVs. As the introduction of the pilotless vehicles and equipment demands some investment expenses, the economic efficiency of the project is calculated. The result of the calculation of the economy, gained with the use of the pilotless equipment has proved the efficiency of such investments.

Sign in / Sign up

Export Citation Format

Share Document