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Shayan Jorjam, Mohammed Mawlana and Amin Hammad
The traditional method of installing underground utilities (e.g., water, sewer, gas pipes, electrical cables) by burying them under roads has been used for decades. However, the repeated excavations related to this method cause problems, such as traffic ...
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Zhe Xu, Bing Guan, Lixin Wei, Shuangqing Chen, Minghao Li and Xiaoyu Jiang
The development of hydrogen-blended natural gas (HBNG) increases the risk of gas transportation and presents challenges for pipeline security in utility tunnels. The objective of this study is to investigate the diffusion properties of HBNG in utility tu...
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María Elena Tejeda-del-Cueto, Manuel Alberto Flores-Alfaro, Miguel Toledo-Velázquez, Lorena del Carmen Santos-Cortes, José Hernández-Hernández and Marco Osvaldo Vigueras-Zúñiga
The objective of this study is to develop a genetic algorithm that uses the IGP parameterization to increase the lift coefficient (CL) of three airfoils to be used on wings of unmanned aerial vehicles (UAVs). The geometry of three baseline airfoils was m...
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Fang-Le Peng, Yong-Kang Qiao and Chao Yang
Safety issues are a major concern for the long-term maintenance and operation of utility tunnels, of which the focal point lies in the reliability of critical facilities. Conventional evaluation methods have failed to reflect the time-dependency and obje...
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Quan Cheng, Zhengwei Li, Shaowei Deng, Haibo Jiang, Yueqiang Tian and Jiayue Geng
In this paper, a bending test of a precast ultra-high-performance concrete (UHPC) diaphragm slab was carried out. The test revealed that the flexural failure process of specimens under the action of a positive bending moment can be divided into three sta...
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Maria Uggla, Perola Olsson, Barzan Abdi, Björn Axelsson, Matthew Calvert, Ulrika Christensen, Daniel Gardevärn, Gabriel Hirsch, Eric Jeansson, Zuhret Kadric, Jonas Lord, Axel Loreman, Andreas Persson, Ola Setterby, Maria Sjöberger, Paul Stewart, Andreas Rudenå, Andreas Ahlström, Mikael Bauner, Kendall Hartman, Karolina Pantazatou, Wenjing Liu, Hongchao Fan, Gefei Kong, Hang Li and Lars Harrieadd Show full author list remove Hide full author list
Three-dimensional city models are increasingly being used for analyses and simulations. To enable such applications, it is necessary to standardise semantically richer city models and, in some cases, to connect the models with external data sources. In t...
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Yutao Feng, Weibin Li and Nan Lu
In this paper, the mechanical properties of hollow precast utility tunnels are studied by experimental and numerical methods. Through full-scale experiments, the failure modes of ordinary and hollow utility tunnels are studied, and the failure stages of ...
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Isam Shahrour, Hanbing Bian, Xiongyao Xie and Zixin Zhang
This paper presents a smart solution for the utility tunnel, which allows hosting a wide range of water and energy utilities in an accessible underground space. It is well known that utility tunnels offer major advantages such as the possibility to inspe...
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