Stud shear connector in 10 in. Concrete Deck
Stud shear connector in 10 in. Concrete Deck
(OP)
Composite deck slab 10" thick spans 8',8 ',8'(2 exterior span,1 interior span). Beam is W18x50(50 KSI) and spans 30'
(1 span only).Loading is AASHTO HL93. Recommended stud shear connectors (using 4 ksi concrete) number 56 studs
@6.4 in. on centers. Following art.4.6.2 Approximate method
(AASHTO), effective width for axle load(16000 lbf) is about
6'.Considering both axle load and Lane load, factored shear
stress is about 49 psi( effective d is 7"). Factored shear Resistance is about 126.5 psi. So factored shear stress is
less than half of shear resistance. In my thinking, the deck
does not need any stud shear connectors.
Is there any need for providing nominal stud connectors
along the span of the deck ? Away from the W beam, the studs
could only be welded to form metal. Even if the studs are
welded, would they work without distressing the metal deck ?
(1 span only).Loading is AASHTO HL93. Recommended stud shear connectors (using 4 ksi concrete) number 56 studs
@6.4 in. on centers. Following art.4.6.2 Approximate method
(AASHTO), effective width for axle load(16000 lbf) is about
6'.Considering both axle load and Lane load, factored shear
stress is about 49 psi( effective d is 7"). Factored shear Resistance is about 126.5 psi. So factored shear stress is
less than half of shear resistance. In my thinking, the deck
does not need any stud shear connectors.
Is there any need for providing nominal stud connectors
along the span of the deck ? Away from the W beam, the studs
could only be welded to form metal. Even if the studs are
welded, would they work without distressing the metal deck ?






RE: Stud shear connector in 10 in. Concrete Deck
RE: Stud shear connector in 10 in. Concrete Deck
RE: Stud shear connector in 10 in. Concrete Deck
Your span arrangement does not sound like a bridge, 8'-8'-8' with a single span at 30'. Are you saying the transverse section has three beams spaced at eight feet o.c.? And that the bridge is a single span of 30'?
RE: Stud shear connector in 10 in. Concrete Deck
Studs would either be attached to the beam directly or attached to the beam through the metal deck, but not just to the metal deck. That wouldn't help much.
RE: Stud shear connector in 10 in. Concrete Deck
Section 9.8.5.3 (LRFD 3rd Ed) addresses composite action of corrugated metal decks. I've never seen composite metal deck construction on a bridge.