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A platform for research: civil engineering, architecture and urbanism
Semi-automatic construction of pile-supported subgrade adjacent to existing railway
Abstract 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.
Highlights A Benoto pile-plank-supported subgrade is proposed for displacement mitigation of adjacent subgrade. A height-limited two-part piling equipment is developed for the Benoto pile adjacent to existing track. A semi-automatic construction system of the Benoto piles based on fiber-optical monitoring technique is proposed. The application effect of the semi-automatic construction system is verified by a series of in-situ tests.
Semi-automatic construction of pile-supported subgrade adjacent to existing railway
Abstract 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.
Highlights A Benoto pile-plank-supported subgrade is proposed for displacement mitigation of adjacent subgrade. A height-limited two-part piling equipment is developed for the Benoto pile adjacent to existing track. A semi-automatic construction system of the Benoto piles based on fiber-optical monitoring technique is proposed. The application effect of the semi-automatic construction system is verified by a series of in-situ tests.
Semi-automatic construction of pile-supported subgrade adjacent to existing railway
Shan, Yao (author) / Xiao, Weixiong (author) / Xiang, Ke (author) / Wang, Binglong (author) / Zhou, Shunhua (author)
2021-12-01
Article (Journal)
Electronic Resource
English
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