Experimental investigation and theoretical analysis of hybrid notch-screw shear connectors used in timber-UHPC composite structures

The composite structure comprising glued laminated timber (GLT) and Ultra-high-performance concrete (UHPC), known as (GUCC), offers a sustainable construction solution by reducing deadweight, enhancing durability, and increasing span capacity compared to the traditional glulam-concrete composite structures. This paper presents an experimental investigation into the shear behaviour of hybrid notch-screw (HNS) shear connectors used in GUCC. Eight sets of push-out specimens, varying in screw numbers, notch length, notch depth, and timber length in front of the notch, were prepared and subjected to direct shear testing under monotonic loading conditions. The experimental investigation findings revealed that the…

• NN
  National Natural Science Foundation of China

  Award: 52478135
• NS
  Natural Science Foundation of Chongqing

  Award: CSTB2024NSCQ-MSX0572
• KP
  Key Project of Application Development Plan of Chongqing City
• NK
  National Key Research and Development Program of China

  Award: 2021YFF0500804