期刊
AUTOMATION IN CONSTRUCTION
卷 134, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.autcon.2021.104085
关键词
High-speed railway subgrade; Benoto pile; Construction equipment; fiber-optical sensor; Subgrade settlement
资金
- National Natural Science Foundation of China [51708424]
- Shanghai Municipal Science and Technology Major Project [2021SHZDZX0100]
- Fundamental Research Funds for the Central Universities, the People's Republic of China
This study discusses the challenges posed by the rapid expansion of China's high-speed railway network, proposing solutions to ensure the safety of existing railways in the form of a developed Benoto pile-plank-supported subgrade and a fiber-optical monitoring system. Through testing, it was found that this construction system effectively controls the deformation of existing high-speed railway subgrades.
The rapid expansion of the high-speed railway network in China leads to an increasing number of connections between new constructed infrastructures and existing ones. The construction of the infrastructure extremely adjacent to existing high-speed railways significantly threaten the operation safety of the high-speed trains. To guarantee the operation safety of the existing high-speed railways in this sensitive zone, a developed Benoto pile-plank-supported subgrade and a set of specially designed construction equipment are proposed. A fiber-optical monitoring system for foundation deformation and structural internal forces is employed to provide a data basis for parameterization of the construction equipment. In this way, an integrated semi-automatic construction system is established. The application effect of the construction system is tested in a real construction project of a pile-supported subgrade adjacent to an existing high-speed railway track. In-situ measurement data reveal that the deformation of the existing high-speed railway subgrade can be well controlled.
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