PC-Wall
PC-Wall is a construction method for underground retaining structures, such as retaining walls, by pressing square prestressed concrete (PC) hollow precast members into the ground in a line. The PC-Wall method is widely used in retaining walls for roads, reservoirs, underground adjustment reservoirs, and various ground retaining structures such as retaining walls to prevent landslides or to enable land development. The PC-Wall can apply curved lines or different coping level heights for retaining wall construction. The PC-Wall can be applied as a bridge foundation and retaining wall with a smaller size for bridges, and its construction time and cost can be reduced. Research, development, and promotion of the PC-Wall method is done by the Precast Concrete Walls Association.
PC precast hollow member
NETIS Registration
NETIS Registration No. : KT - 990077 - A Expired of published period
Features
- PC-Wall can be applied in a self-standing wall structure up to 9 m tall with a cross-sectional shape from 500 mm to 900 mm.
- PC-Wall has high bending rigidity compared with steel pipe sheet pilings.
- PC-Wall can be constructed more quickly compared with cast-in-place pilings to replace temporary earth retaining walls.
- PC-Wall can be constructed in narrow urban construction sites because it does not disturb the ground behind the structure as it is constructed.
- Construction of PC-Wall causes less noise and vibration, and it can be applied in hard ground conditions together with the pre-boring cement milk method.
- PC-Wall can be constructed as spliced pilings because it can be applied to the construction of joints that are as strong as the main structure. It can be also applied to longer PC-Wall concrete members when applied in soft ground conditions. Its maximum length to date is 70 m.
- PC-Wall can be constructed by dividing and connecting its concrete members quickly when transportation of PC-Wall concrete members is difficult.
Press-in of PC-Wall member
Road wall
River revetment
Underground reservoir
