TY - JOUR
T1 - Bridging the gap between one-way and two-way shear in slabs
AU - Lantsoght, Eva O.L.
AU - Van Der Veen, Cor
AU - De Boer, Ane
AU - Alexander, Scott D.B.
N1 - Publisher Copyright:
© 2016 American Concrete Institute. All rights reserved.
PY - 2016
Y1 - 2016
N2 - The shear capacity of slabs under concentrated loads is particularly of interest for bridge decks under concentrated live loads. Often, one-way shear will be analyzed by considering the slab as a wide beam (without taking advantage of the transverse load redistribution capacity of the slab) and two-way shear by considering the punching area around the load. Since experiments have shown that the failure mode of slabs under concentrated loads is a combination of one-way and two-way shear as well as two-way flexure, a method was sought that bridges the gap between the traditional one-way and two-way shear approaches. The proposed method is a plasticity-based method. This method is based on the Strip Model for concentric punching shear and takes the effects of the geometry into account for describing the ultimate capacity of a slab under a concentrated load. The model consists of "strips" that work with arching action (one-way shear) and slab "quadrants" that work in two-way shear. As such, the resulting Extended Strip Model is suitable for the design and assessment of elements that are in the transition zone between one-way and two-way shear.
AB - The shear capacity of slabs under concentrated loads is particularly of interest for bridge decks under concentrated live loads. Often, one-way shear will be analyzed by considering the slab as a wide beam (without taking advantage of the transverse load redistribution capacity of the slab) and two-way shear by considering the punching area around the load. Since experiments have shown that the failure mode of slabs under concentrated loads is a combination of one-way and two-way shear as well as two-way flexure, a method was sought that bridges the gap between the traditional one-way and two-way shear approaches. The proposed method is a plasticity-based method. This method is based on the Strip Model for concentric punching shear and takes the effects of the geometry into account for describing the ultimate capacity of a slab under a concentrated load. The model consists of "strips" that work with arching action (one-way shear) and slab "quadrants" that work in two-way shear. As such, the resulting Extended Strip Model is suitable for the design and assessment of elements that are in the transition zone between one-way and two-way shear.
KW - Arching action, extended strip model, flexure
KW - Plasticity, one-way slabs, punching, shear, strip method, strip model
UR - http://www.scopus.com/inward/record.url?scp=85021814137&partnerID=8YFLogxK
M3 - Artículo de la conferencia
AN - SCOPUS:85021814137
SN - 0193-2527
VL - 2016-October
SP - 187
EP - 214
JO - American Concrete Institute, ACI Special Publication
JF - American Concrete Institute, ACI Special Publication
IS - SP 315
T2 - ACI-fib International Symposium on Punching Shear of Structural Concrete Slabs 2016
Y2 - 25 October 2016 through 25 October 2016
ER -