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61,533 result(s) for "Airport construction"
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The application of rapid-setting materials in non-suspending airport construction: a review
With the development of globalization, civil aviation plays an increasingly important role in various types of transportation methods. As airports are vital hubs for civil aviation, their renovation and expansion will significantly affect the operational efficiency and security of civil aviation. The traditional airport construction method requires the interruption of airport operations, which has a great negative impact on the continuous operation of air transportation. Non-suspending construction can ensure that renovation, expansion and routine structural safety detections are conducted without interrupting the orderly operation of the airports, which greatly improves the operational efficiency and security of airport operations. As a kind of advanced construction material, rapid-setting materials mainly include rapid-setting cement and rapid-setting asphalt, which are characterized by the advantages of shortened setting time, high early strength, low life-cycle cost and accelerated construction progress. In the early stages, rapid-setting materials were used for road pavement repair. In recent years, rapid-setting materials have also been broadly used in non-suspending airport construction. The application of rapid-setting materials in non-suspending airport construction can further shorten the duration of construction, improve the efficiency of airport renovation and expansion, and ensure the continuous operation and security of the airport. Therefore, this paper systematically reviews the application of rapid-setting materials in non-suspending airport construction from three aspects, which are material properties, functioning mechanisms and case studies, then the main challenges encountered at this stage are summarized, and future development prospects are also outlooked. Thus, this review is expected to provide new design methods for modern, intelligent and efficient airport construction.
Short review of concepts and practices in green airports in China
Becoming a green airport is an inevitable trend of future airport construction. In recent years much effort has been put towards developing green airports in China. This paper reviewed the evolution of the concepts of green airports, analyzed the domestic green airport projects according to the publicity material, to provide some useful suggestions for the future development of green airports in China.
Project ambidexterity: case of recovering schedule delay in a brownfield airport project in India
Planning deficiencies and consequent execution delays are likely to persist in infrastructure development projects. However, recovery of schedule delay is a less researched area. This case research, using a two-stage inquiry modeled on the grounded theory, studied the schedule delay recovery during the execution phase of a brownfield airport construction project. The analyses generated contextual evidence and ambidexterity was found to be the key underlying phenomenon for successful recovery measures. The empirical learning was validated with literature and can be used by practitioners looking to institute schedule recovery measures.
Airports and environmental sustainability: a comprehensive review
Over 2500 airports worldwide provide critical infrastructure that supports 4 billion annual passengers. To meet changes in capacity and post-COVID-19 passenger processing, airport infrastructure such as terminal buildings, airfields, and ground service equipment require substantial upgrades. Aviation accounts for 2.5% of global greenhouse gas (GHG) emissions, but that estimate excludes airport construction and operation. Metrics that assess an airport's sustainability, in addition to environmental impacts that are sometimes unaccounted for (e.g. water consumption), are necessary for a more complete environmental accounting of the entire aviation sector. This review synthesizes the current state of environmental sustainability metrics and methods (e.g. life-cycle assessment, Scope GHG emissions) for airports as identified in 108 peer-reviewed journal articles and technical reports. Articles are grouped according to six categories (Energy and Atmosphere, Comfort and Health, Water and Wastewater, Site and Habitat, Material and Resources, Multidimensional) of an existing airport sustainability assessment framework. A case study application of the framework is evaluated for its efficacy in yielding performance objectives. Research interest in airport environmental sustainability is steadily increasing, but there is ample need for more systematic assessment that accounts for a variety of emissions and regional variation. Prominent research themes include analyzing the GHG emissions from airfield pavements and energy management strategies for airport buildings. Research on water conservation, climate change resilience, and waste management is more limited, indicating that airport environmental accounting requires more analysis. A disconnect exists between research efforts and practices implemented by airports. Effective practices such as sourcing low-emission electricity and electrifying ground transportation and gate equipment can in the short term aid airports in moving towards sustainability goals. Future research must emphasize stakeholder involvement, life-cycle assessment, linking environmental impacts with operational outcomes, and global challenges (e.g. resilience, climate change adaptation, mitigation of infectious diseases).
Research on the Key Technology of Prefabrication and Assembling of the Viaduct Substructure in the Urban Central Area of the Middle Earthquake Region
Facing the difficulty of construction of viaducts in the central area of the city with short construction period and large daytime traffic. Relying on the Nairobi Airport viaduct project in Kenya, the problems in the construction of this project and the special seismic intensity of the area were analyzed. The key technologies in the design and construction of the bridge substructure using prefabricated assembly technology were studied, and a reasonable substructure analysis was put forward. Block principle and assembly connection plan, and focus on the key construction technology of pier column and cap beam assembly. Through the research on the key technology of substructure design and prefabrication assembly and the application of engineering examples, the problem of viaduct construction in urban restricted road sections in the earthquake zone with moderate intensity is effectively solved.
Maritime airports in Japan: location and construction features
The article deals with the experience of creating airports on artificial islands in Japan. On the basis of ministerial and departmental statistics, available on the Statistics Bureau of Japan portal and on the websites of regional services of individual prefectures, the role of these airports in solving the country’s transport problems is considered. A definition of a maritime airport has been formulated and their share in the total number of airports, passenger and cargo turnover of all airports in the country has been determined. The peculiarities of seaports localization are revealed. The main phases of Kansai airport construction and the “three airport problem in the Kansai region” are considered.
Research on FOD Detection System of Airport Runway Based on Artificial Intelligence
With the rapid development of the global aviation industry, the number and scale of construction of civil airports around the world are increasing. In this context, the difficulty of aviation safety assurance work has also increased. Foreign object debris on the airport runway is one of the important factors affecting aviation safety and security. Any foreign material, debris or small objects that appear on the airport runway may pose a serious threat to the ground operation safety of the aircraft. Therefore, research on FOD detection is very important.
Effect of high-pressure sintering on snow density evolution: experiments and results
Very few studies have emphasized the effects of high-pressure sintering on snow density evolution, even though snow as a type of engineering material is widely used in construction engineering in cold regions for snow pavement, snow runway and polar infrastructure. This study presents new experimental results of snow densification under high pressures of up to 100 MPa for a temperature range from −3.5 to −17.3°C and uniaxial compression at the temperature of −10°C and constant strain rates from 5 × 10−4 to 10−1 s−1. Results reveal that density evolution of snow to ice under high-pressure sintering can be achieved in a wide temperature range within a duration as short as 5 min. The compressive strength of snow-sintered ice was ~1.2–2.2 times as large as that of water-frozen ice reported by previous work. The orthogonal experiment showed that pressure is a more significant factor affecting the final density in comparison with sintering temperature and time. The increased rates of ice fabrication, low limitations on temperature and reliable sintered snow strength indicate that snow-ice engineering, such as airport construction in Greenland and Antarctica, can be improved by high-pressure sintering of snow to overcome the harsh environment.