Abstract

Fragility assessment requires characterization of a component or system's performance through a performance function/limit-state equation. The exceedance of limit-state is representative of failure or damage state. For the purposes of evaluating piping fragility, characterizing the behavior of T-joints through an appropriate performance function is critical, as failures in piping are generally localized at the location of T-joints, elbows, and nozzles. Past studies have utilized a monotonic rotation-based performance function. However, the existing criteria does not account for the effect of cyclic behavior. As observed during prior experimental studies, the T-joint behavior under cyclic loading is different from that under monotonic loading, and therefore, it is important to include the effects of cyclic behavior while characterizing a performance function. Moreover, the monotonic rotation-based performance function could not replicate all the leakage locations observed during experimental studies on a full-scale two-story piping system. Therefore, it is important to develop a new limit-state for accurate piping fragility assessment. This paper presents the development of a new limit state which considers the cyclic behavior of a T-joint and quantifies the number of cycles to failure.

References

References
1.
Ju
,
B. S.
, and
Gupta
,
A.
,
2015
, “
Seismic Fragility of Threaded Tee-Joint Connections in Piping Systems
,”
Int. J. Pressure Vessels Piping
,
132–133
, pp.
106
118
.10.1016/j.ijpvp.2015.06.001
2.
Ryu
,
Y.
,
Gupta
,
A.
,
Woo
,
Y. J.
, and
Ju
,
B. S.
,
2016
, “
A Reconciliation of Experimental and Analytical Results for Piping Systems
,”
Int. J. Steel Struct.
,
16
(
4
), pp.
1043
1055
.10.1007/s13296-016-0019-6
3.
Soroushian
,
S.
,
Zaghi
,
A. E.
,
Maragakis
,
M.
,
Echevarria
,
A.
,
Tian
,
Y.
, and
Filiatrault
,
A.
,
2015
, “
Analytical Seismic Fragility Analysis of Fire Sprinkler Piping Systems With Threaded Joints
,”
Earthquake Spectra
,
31
(
2
), pp.
1125
1155
.10.1193/083112EQS277M
4.
Tian
,
Y.
,
Filiatrault
,
A.
, and
Mosqueda
,
G.
,
2014
, “
Experimental Seismic Fragility of Pressurized Fire Suppression Sprinkler Piping Joints
,”
Earthquake Spectra
,
30
(
4
), pp.
1733
1748
.10.1193/111011EQS278M
5.
Ryu
,
Y.
, and
Matzen
,
V.
,
2016
, “
The Nonlinear Behavior of Threaded Piping Connections: Application Using a Modified Ramberg-Osgood Model
,”
Ocean Eng.
,
127
, pp.
1
6
.10.1016/j.oceaneng.2016.09.030
6.
ATC
,
1985
, “
Earthquake Damage Evaluation Data for California
,” Applied Technology Council, Redwood City, CA, Standard No.
ATC-13
.https://www.atcouncil.org/pdfs/atc13.pdf
7.
Federal Emergency Management Agency/National Institute of Building Science
,
1999
, “HAZUS Earthquake Loss Estimation Methodology-Technical Manual,” Federal Emergency Management Agency/National Institute of Building Science, Washington, DC.
8.
Kircher
,
C.
,
Whitman
,
R.
, and
Holmes
,
W.
,
2006
, “
HAZUS Earthquake Loss Estimation Methods
,”
Nat. Hazards Rev.
,
7
(
2
), pp.
45
59
.10.1061/(ASCE)1527-6988(2006)7:2(45)
9.
Ju
,
B. S.
,
Gupta
,
A.
, and
Ryu
,
Y.
,
2017
, “
Piping Fragility Evaluation: Interaction With High-Rise Building Performance
,”
ASME J. Pressure Vessel Technol.
,
139
(
3
), p.
031801
. to10.1115/1.4034406
10.
ASME
,
2013
, “
American Society of Mechanical Engineers Rules for Construction of Nuclear Facility Components, ASME Boiler & Pressure Vessel Code, Section III
,”
ASME
,
New York
.
11.
Tian
,
Y.
,
Filiatrault
,
A.
, and
Mosqueda
,
G.
,
2015
, “
Seismic Response of Pressurized Fire Sprinkler Piping Systems—I: Experimental Study
,”
J. Earthquake Eng.
,
19
(
4
), pp.
649
673
.10.1080/13632469.2014.994147
12.
Jeon
,
B. G.
,
Kim
,
S.
,
Yun
,
D.
, and
Hahmn
,
D.
,
2019
, “
A Quantitative Limit State of the Carbon Steel Pipe Tee in the Nuclear Power Plants Under in-Plane Cyclic Loading
,”
Transactions of 25th International Conference in Structural Mechanics in Reactor Technology
(
SMiRT 25
),
Charlotte, NC
, Aug. 4–9.https://www.smirt25.org/
13.
Kanvinde
,
A. M.
, and
Deierlein
,
G. G.
,
2007
, “
Cyclic Void Growth Model to Assess Ductile Fracture Initiation in Structural Steels Due to Ultra-Low Cycle Fatigue
,”
J. Eng. Mech.
,
133
(
6
), pp.
701
712
.10.1061/(ASCE)0733-9399(2007)133:6(701)
14.
Coffin Jr
,
L. F.
,
1971
, A Note on Low Cycle Fatigue Laws, Defense Technical Information Center, Fort Belvoir, VA, pp.
388
402
.
15.
Manson
,
S. S.
,
1954
, “
Behavior of Materials Under Conditions of Thermal Stress
,” National Advisory Commission on Aeronautics/Lewis Flight Propulsion Laboratory,
Cleveland, OH
, Report No.
1170
.https://ntrs.nasa.gov/search.jsp?R=19930092197
16.
Usami
,
T.
,
Wang
,
C.
, and
Funayama
,
G.
,
2012
, “
Developing High-Performance Aluminum Alloy Buckling-Restrained Braces Based on Series of Low-Cycle Fatigue Tests
,”
Earthquake Eng. Struct. Dyn.
,
41
(
4
), pp.
643
661
.10.1002/eqe.1149
17.
Tateishi
,
K.
,
Hanji
,
T.
, and
Minami
,
K.
,
2007
, “
A Prediction Model for Extremely Low Cycle Fatigue
,”
Int. J. Fatigue
,
29
(
5
), pp.
887
896
.10.1016/j.ijfatigue.2006.08.001
18.
Zhou
,
Y.
,
Ou
,
Y.
,
Lee
,
G. C.
,
Connor
., and
O'Connor
,
J. S.
,
2010
, “
Mechanical and Low-Cycle Fatigue Behavior of Stainless Reinforcing Steel for Earthquake Engineering Applications
,”
Earthquake Eng. Eng. Vib.
,
9
(
3
), pp.
449
457
.10.1007/s11803-010-0028-y
19.
Jiao
,
Y.
,
Kishiki
,
S.
,
Yamada
,
S.
,
Diana
,
E.
,
Konishi
,
Y.
,
Hoashi
,
Y.
, and
Terashima
,
M.
,
2015
, “
Low Cycle Fatigue and Hysteretic Behavior of U-Shaped Steel Dampers for Seismically Isolated Buildings Under Dynamic Cyclic Loading
,”
Earthquake Eng. Struct. Dyn.
,
44
(
10
), pp.
1523
1538
.10.1002/eqe.2533
20.
Pirondi
,
A.
, and
Bonora
,
N.
,
2003
, “
Modelling Ductile Damage Under Fully Reversed Cycling
,”
Comput. Mater. Sci.
,
26
, pp.
129
141
. Volume10.1016/S0927-0256(02)00411-1
21.
Gilmore
,
A. T.
, and
Jirsa
,
J. O.
,
2007
, “
Energy Demands for Seismic Design Against Low-Cycle Fatigue
,”
Earthquake Eng. Struct. Dyn.
,
36
(
3
), pp.
383
404
.10.1002/eqe.663
22.
FEMA,
2007
, “
Interim Testing Protocols for Determining the Seismic Performance Characteristics of Structural and Nonstructural Components
,”
FEMA
,
Oakland, CA
, FEMA 461.https://www.atcouncil.org/pdfs/FEMA461.pdf
23.
Mazzoni
,
S.
,
Mckenna
,
F.
,
Scott
,
M. H.
, and
Fenves
,
G. L.
,
2006
, “
OpenSees Command Language Manual
,” Open System for Earthquake Engineering Simulation (OpenSees), OpenSees, Berkeley, CA, accessed May 2, 2020, https://opensees.berkeley.edu/
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