TY - GEN
T1 - Extrapolation of Test Data in Time, Size and Risk
T2 - IABSE Symposium Prague 2022: Challenges for Existing and Oncoming Structures
AU - Bažant, Zdeněk P.
AU - Dönmez, A. Abdullah
N1 - Funding Information:
Ack owledmeng t: Funding under NSF Grant CMMI-149639 0 to Northwestern University is gratefully acknowledged. A.A.D also thanks for funding from Istanbul Technical University.
Funding Information:
Funding under NSF Grant CMMI-1439960 to Northwestern University is gratefully acknowledged. A.A.D also thanks for funding from Istanbul Technical University.
Publisher Copyright:
© 2022 IABSE Symposium Prague, 2022: Challenges for Existing and Oncoming Structures - Report. All rights reserved.
PY - 2022
Y1 - 2022
N2 - It is no secret that the lifetimes of concrete structures have been inadequate, and that structural failures are far too common, especially in the case of large structures of novel designs. This problem has two aspects: 1) randomness of loads such as those from traffic, environment and random vibrations, and 2) the uncertainty in material properties, role of corrosive agents, and failure mechanics. Significant progress has been achieved in the first, but less in the second, which is a problem of extrapolation. The second is just as important, yet has been mostly neglected by structural safety specialists. Only the second aspect is discussed in this lecture, and only in qualitative, non-mathematical, terms. A broad vision of the extrapolation problem is offered. Lapses of quality control are a different problem, not discussed here.
AB - It is no secret that the lifetimes of concrete structures have been inadequate, and that structural failures are far too common, especially in the case of large structures of novel designs. This problem has two aspects: 1) randomness of loads such as those from traffic, environment and random vibrations, and 2) the uncertainty in material properties, role of corrosive agents, and failure mechanics. Significant progress has been achieved in the first, but less in the second, which is a problem of extrapolation. The second is just as important, yet has been mostly neglected by structural safety specialists. Only the second aspect is discussed in this lecture, and only in qualitative, non-mathematical, terms. A broad vision of the extrapolation problem is offered. Lapses of quality control are a different problem, not discussed here.
KW - Structural lifetime
KW - concrete, durability
KW - creep
KW - extrapolation
KW - fracture, size effect
KW - shrinkage
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M3 - Conference contribution
AN - SCOPUS:85133547411
T3 - IABSE Symposium Prague, 2022: Challenges for Existing and Oncoming Structures - Report
SP - 54
EP - 66
BT - IABSE Symposium Prague, 2022
PB - International Association for Bridge and Structural Engineering (IABSE)
Y2 - 25 May 2022 through 27 May 2022
ER -