Cold rolled steel sheet piles are used in earth retaining structures where a differential surface level is to be established. The sheet pile forms the vertical interface.
Cold rolled steel sheet piles are used for both temporary and permanent retaining walls. Structures include basements, underground car parks and abutments for bridges including integral bridges.In the China,two profiles designated as U model and and Z model are available.
Z-profiles are used for intermediate to deep wall construction as they are considered to be the most efficient type of sheet pile available. They are commonly used for cantilever and tied-back retaining wall systems. U-profile sheet piles are used for similar applications as Z-profiles, however, because the interlock between adjacent sheet piles is at the neutral axis of the section, their bending resistances are lower than that of comparable Z-profiles.
Cold formed U and Z profile sheet piles are also manufactured, however, they are primarily used for reinforcing dams and river or canal banks. They are also used for containment barriers in contaminated land and as noise barriers when sound absorbent facing is attached to the front of the pile.
Where the depth of excavation is small, cold formed trench sheet sections can be used as an alternative to U and Z sheet piles. Projects include sewerage and drainage works, and particularly sheeting for temporary works.
