Construct cross-structures safely and reliably without excavation! It minimizes deformation and suppresses subsidence of the upper pavement.
The "PCR Method for Roads" is a construction technique that allows for the parallel advancement of small-element PCR girders underground while utilizing the railway and road above. This method introduces prestressing to safely and reliably construct crossing structures without excavation. Depending on the support method of the PCR girder and the arrangement of PC steel materials, various forms such as lower girders, box-shaped tunnels, and circular tunnels can be selected. Since it is a pushing method using small elements, the thrust force is small, resulting in a compact reaction force facility. 【Features (Constructability)】 ■ Minimal impact on the upper road surface ■ Small thrust force, leading to a compact reaction force facility ■ No transportation of soil ■ Capable of handling gravel, cobblestones, and obstacles, ensuring high pushing accuracy ■ Smaller work yard can be accommodated *For more details, please refer to the PDF materials or feel free to contact us.
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【Other Features (Cost-effectiveness)】 ■ Omission of auxiliary processes such as temporary supports and temporary receiving ■ Reduction of soil cover allows for cost reduction and shorter construction time ■ Can be manufactured concurrently with shaft construction work ■ Possible in a short time due to PC connections *For more details, please refer to the PDF materials or feel free to contact us.
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【Achievements】 ■ Chiba City, Chiba Prefecture: Outer Bōsō Expressway ■ Ōtsuki City, Yamanashi Prefecture: Chūō Expressway ■ Sayama City, Saitama Prefecture: National Route 16 ■ Tomakomai City, Hokkaido: National Route 234, etc. *For more details, please refer to the PDF document or feel free to contact us.
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Company information
Oriental Shiraishi Co., Ltd. is a company primarily engaged in the construction and manufacturing sales of prestressed concrete, as well as the construction of pneumatic caissons and repair and reinforcement construction. We contribute to the development of social infrastructure by utilizing special technologies in a setting that looks towards the great nature, the earth, and the future of cities.