What are the advantages and disadvantages of HZ combi-walls?

No matter which kind of composite wall has its advantages and disadvantages, HZ combi-walls steel sheet piles are the same, and any product has improvements. HZ combi-walls steel sheet piles can be seen everywhere in various projects. Because people are pursuing high quality now, and HZ combi-walls steel sheet piles are much stronger than domestic traditional steel pipe piles, they are very popular. So let's talk about the advantages and disadvantages of HZ combi-walls steel sheet piles!

Here is the content list:

Preliminary understanding of HZ combi-walls

What are the advantages of using HZ combi-walls?

What are the main disadvantages of HZ combi-walls?

Preliminary understanding of HZ combi-walls

First of all, what is the HZ combi-walls? Generally speaking, the composite wall with steel pipe is an alternative to the HZ-M/AZ system. The tubular pile is the main retaining element of the HZ composite wall.

HZ combi-walls bear the horizontal load from the soil and water pressure and the vertical from the superstructure or anchoring system. The infill plate in the middle transfers the horizontal load from the trapped soil and water to the tubular pile. It should be noted that infill sheet piles are usually shorter than HZ combi-walls sheet piles.

What are the advantages of using HZ combi-walls?

First of all, the main advantage of the HZ combi-walls is the overall rigidity, which also increases its bearing strength. Stabilize the composite wall by installing horizontal pillars or anchors in the soil behind it.

Second, the HZ combi-walls provides a more cost-effective alternative to the support of the secant wall, while providing a greater load-bearing capacity than the sheet pile wall.

In addition, HZ combi-walls are effective in temporary applications, because once the steel structural elements are no longer needed, they can be easily removed and reused.

The last and most important, it also has the following advantages:

Long without joints

Economical compared with LSAW and seamless pipe

A variety of sizes to choose from

Use high-grade coils

Provide corrosion protection before delivery

King pile wall advantage

Increased wall stiffness

What are the main disadvantages of HZ combi-walls?

HZ combi-walls steel pipelines also have some shortcomings, mainly transportation (high volume factor) and the weight of each component to be driven, which may require powerful driving equipment.

Buckling and torsion of relatively slender pipes can be a problem with high-strength steels. A European project studied these complex basic phenomena and published the results a few years ago.

In addition, HZ combi-walls steel sheet pile lacks an identification system: no matter what the product is, it is difficult to identify. You must check the quality before buying, but the quality of imported steel sheet piles is not so easy to see. Therefore, teach you to identify the quality according to steel sheet piles. Weight calculation, which is also a concern for many consumers.