Omega sheet pile is often used for beach erosion protection, used to stabilize ground slopes, especially roads, and used to support trenches and other excavated walls and cofferdams. When the height of the wall is less than 3 m, it is usually cantilevered. However, for larger wall heights, the Omega sheet pile usually uses one or more anchors to anchor it.
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Introduce the different characteristics of omega sheet pile in detail
The construction sequence of different omega sheet piles
What is the construction method of omega sheet pile?
The wooden Omega sheet pile comes in various sizes and forms. The nature of the site conditions determines the specific type of choice. If water tightness is required to a large extent, use overlapped sheet piles. In this case, each pile consists of two wooden boards, which are nailed together or bolted together.
Wakefield Omega sheet pile is made of three wood boards with a thickness of 5 cm, 8 cm or 10 cm. The plank and the middle plank are offset and nailed together to form a tongue on one edge and a groove on the other edge. The planks are connected by using a pair of staggered bolts, which are centered at the midpoint of the 80 cm center.
Steel plate Omega sheet pile, a rolled steel profile is composed of a plate called a web, with integral interlocking devices on each edge. The interlocking device includes a groove, one of its legs has been properly flattened. This flattening forms a tongue that fits into the groove of the second piece.
It can be seen from the above that the Omega sheet pile needs to be reinforced to avoid cracks due to rough handling or shrinkage stress. In order to reduce the possibility of damage caused by driving impact, the stirrups should be close to the top and bottom of the pile.
The pile is usually angled at its feet to facilitate driving the pile tightly on the already driven pile. Reinforced concrete sheet piles are large and heavy, so they are gradually replaced by Omega sheet piles.
If only a small height of the embankment is to be supported, a single row or double row of planks erected correctly will function as sheet piles. If complete water tightness or pressure retention of the material is required, Wakefield or tongue and grooved sheets are usually used.
In order to facilitate pile driving, the pile is usually ground into an inclined plane. If the Omega sheet piles hits a hard ground, it will not only help piling, but also prevent bruising.
Facts have proved that the piling ability of triple piles is stronger. The formation of tongue-and-groove joints is not wasted, and the warping tendency of the pile is small. The Omega sheet piles is light in weight, so the equipment required for piling is also light. This is considered to be an important advantage of wood piles over other material piles.
In the structure of Omega sheet piles, the sheet pile can be driven into the ground and then the backfill can be placed on the ground, or the sheet pile can be driven into the ground first, and then the soil in front of the sheet pile can be dredged.
In either case, the soil used to backfill the sheet pile wall is usually granular. The soil may be sandy or clay. The soil surface on the water side is called the mud line or dredging line. The construction method is as follows:
Dredge the in-situ soil before and after the proposed structure
Piling board
Backfill to the height of the anchor point, then place the anchor point system
Backfill to the top of the wall
