Structures

Small scaled shear connectors in HSC/UHPC

---

Abstract

Through the use of ultra-high-performance concrete (UHPC) in composite construction, slender, wide spanning and highly sustainable composite elements can be realized. Due to its favorable ratio of strength to weight, high-strength concrete allows for a significant reduction in cross-sectional dimensions compared to normal-strength materials. For certain applications, the thicknesses of concrete slabs can thus be reduced to less than 30 mm. However, for such slender HSC/UHPC slabs the applicability of conventional shear connectors, such as headed studs, is no longer possible. The systematic connection of the cross sections requires novel, small scaled connectors transmitting shear forces in the composite connection. A novel welding method allows for the production of pin structures, which can be used as innovative small scaled shear connectors in HSC and UHPC. In this paper the local and global load carrying and deformation behavior of small-scale shear connectors is analyzed by experimental investigations.

Keywords: UHPC, high performance materials, stainless steel, slender composite structures, pin connectors

How to Cite:

Classen, M., Herbrand, M., Stark, A. & Hegger, J., (2016) “Small scaled shear connectors in HSC/UHPC”, International Interactive Symposium on Ultra-High Performance Concrete 1(1). doi: https://doi.org/10.21838/uhpc.2016.16