Reinforcement is one of the most crucial topics in the 21st century. It’s essential for allowing us to build taller buildings, infrastructure, and much more. There’s a growing demand for it as well, especially in parts of the world prone to seismic activity. Concrete filled steel tube (CFST) is a really popular option. Before using it or other methods though, it is important to think about the potential failure modes. Let’s have a look at two here. Then, if you want to order from the leading ERW steel tube supplier in the West Midlands, you can speak to us.
What is it?
CFST is a really interesting technique that actually dates back further than many people think (the idea is over a century old). However, it only gained so much popularity after the turn of the Millennium. As you can tell from the name, the technique involves using steel tubing. You fill it with concrete, creating a composite product. This is an alternative take on the traditional way of using concrete; leaving the concrete open but embedding rebar in it to increase the strength.
There are really important performance benefits with CFST. Notably, the confinement of the concrete helps to address two different issues with the materials. Firstly, it reduces the risk of the tubing buckling, massively improving the load bearing strength and structural integrity. Secondly, the tube confines the concrete, helping to delay cracking.
Using CFST also provides an array of other advantages. For example, it can actually lower construction costs, especially with skyscrapers and arch bridges. There are aesthetic benefits too because you have the tube rather than bare concrete. You can even opt to finish the tubing in different ways, including painting a massive selection of colours. Order from us if you want to work with the leading ERW steel tube supplier in the West Midlands.
Failure methods
As we said, when you use any method for building and reinforcement, you need to think about the failure modes. Research from 2018 had a specific look at what happens to CFST columns when there is axial compression. The findings are really interesting.
Most notably, the researchers found how important the weld strength is with CFST. If it is greater than the axial loading, the failure tends to be bending and localised buckling. On the other hand, if the weld strength is lower than the axial load, the failure is the splitting of the tubing along the weld seam.
It’s also important to consider the confinement effect. There is a chance that the operating load could cause the steel tube to break away from the concrete.
Get products from the top ERW steel tube supplier in the West Midlands
Union Steel Tubes has fantastic products clients can rely on for a variety of applications. We specialise in ERW tubing, achieving the highest standards we can by focusing on quality management, calling on our wealth of experience, and using fantastic equipment. We can cater for all kinds of needs with our massive range of options.
So, contact us today and see why we are the most reputable ERW steel tube supplier in the West Midlands. We focus on giving our clients the best service, including advice about tubing too.
