PRODUCT INFORMATION
CoreBraces are uniquely suited for the cyclical loading that braces experience during a seismic event. By yielding in tension
as well as compression the braces are able to dissipate seismic energy. The tensile capacity of the braces can be closely
matched with the compressive capacity because of innovative CoreBrace technology, which resists against Euler buckling in a
unique way.
An inner, relatively slender, steel core is encased in concrete and an outer steel tube. The inner steel core carries the loads,
and the function of the concrete and steel tube is to act as a restraining mechanism for the steel core to prevent buckling
that would normally occur under large compressive loads. Special consideration needs to be paid to the area in-between the
core element and the concrete. It is important that the inner core does not adhere to the concrete. Similarly, the inner core
member cannot be confined in such a way that it is unable to yield. In order prevent adherence, ensure proper confinement and
understand the braces' behavior, numerous large-scale braces have been tested. Data gathered from the tests is used to refine
the CoreBraces, ensure optimal performance, and plan for future testing.
The testing has verified that CoreBraces demonstrate stable, repeatable behavior, with positive incremental stiffness. Conventional
braces used in practice are unable to achieve similar results. To see hysteresis loops and other data for several full-scale tests please
see our test page.
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