Plastic steel sheet piles are a new type of high-strength, environmentally friendly material made from polymer-reinforced composite materials. Their shape is designed based on mechanical principles, featuring a high-moment-of-inertia cross-section and multidirectional interlocking joints. When assembled, they form a continuous, high-strength structure with excellent lateral bending resistance, capable of replacing traditional concrete and steel sheet piles.

1. In agricultural water conservancy, plastic-steel sheet piles are used for constructing and maintaining irrigation channels, waterways, and small-to-medium reservoir dams, as well as reinforcing riverbank protection. They effectively enhance erosion resistance and anti-slip stability. For instance, in the Yellow River’s Ningxia section remediation project, high-strength plastic-steel composite sheet piles significantly increased the stability safety factor of embankment soil and gabion structures. Their performance was particularly outstanding in maintaining bank stability during construction flow conditions and after erosion stabilization.

‌2. In construction engineering,‌ plastic-steel sheet piles are widely used in structures such as foundation pit support, slope protection, retaining walls, and perimeter walls. They are also suitable for foundation treatments like diaphragm walls and cofferdams. Their environmental friendliness and outstanding physical properties make them an ideal choice.‌

3. In transportation engineering, disaster prevention and mitigation, and marine development, plastic steel sheet piles also play a vital role. For instance, in deep foundation pit support for land reclamation projects, stability is ensured through verticality control and correction measures. Regarding construction techniques, patented technologies like installation guides prevent deformation caused by direct contact with hydraulic pile drivers, enhancing installation precision.