A dynamic anchor is a load-bearing industrial fastening used in securing objects such as machinery or plant to concrete structures, plus to reinforce such structures and help them in withstanding seismic movements or varying dynamic loads. Fabricated from
zinc plated stainless steel or carbon steel, dynamic anchors are an essential component of the civil engineering industry today as the need for assured structural safety is increasing more and more than yesteryears.
How does a dynamic anchor work?
Sometimes, anchors are cast right into concrete during the process of pouring or more typically the anchors are post installed afterwards through drilling into the precast concrete structure. These post-installation anchors are often chemical or mechanical when it comes to design, and they are usually suitable for use in non-cracked and cracked concrete.
When it comes to mechanical anchors, like dynamic undercut anchor, they often work by using an enlarged opening that’s inside a drilled hole in creating an interlocking effect between the anchor and the concrete. A dynamic undercut anchor can be loaded immediately and are less sensitive when it comes to installation. A dynamic undercut anchor is also is inexpensive as an installed fixing.
On the other hand, chemical anchors require a mortar-based adhesive added to that drilled hole before inserting the anchor. Once the motor sets, it will create a sealed bond between that hole and the anchor. Increasing the depth and diameter of the drilled hole will maximise and increase the anchor’s load-bearing capacity.
Chemical anchors can be placed towards the edge of the concrete substrate and through masonry block. This non-expanding nature of this chemically-held rod significantly reduces the likelihood of the surrounding concrete having a crack. This can be used in securing railings onto concrete stairs or shallower slabs, and similar applications. Chemical anchoring also allows you to make adjustments to the alignment of the studs while the chemical is still curing.
How do dynamic anchors resist shock loads?
Typically, shock loads are occurrences of short-duration but cause a high-force impact on structures, like the ones experienced in an explosion, lift failure or a vehicular collision. Structures utilising anchors that are designed to automatically resist shock loads are more likely to withstand and resist the effects of this type of impact and also minimises the resulting risks to the surrounding structure or people.