Concetti e metodi del Performance- Based Wind Engineering (PBWE) - Francesco Petrini

Concetti e metodi del Performance-

Based Wind Engineering

(PBWE)

Francesco Petrini

Structural Engineer, Ph.D., P.E.

--School of Civil and Industrial Engineering, Sapienza Università di Roma

Co-founder and Director,StroNGER S.r.l.,

--e-mail: [email protected]

[email protected]

09 December 2014

Giornata di studio in onore di Marcello Ciampoli

Facoltà di Ingegneria, Aula del Chiostro

Via Eudossiana, 18; ROMA

Why I am speaking about

Marcello Ciampoli today

Giornata per Marcello, Roma 09 Dec 2014 Francesco Petrini

Spin-off

company

2012IABMAS’11

(Italy) – SS Chair

20132011

20102009200720062005

Overview of my career development (2005-2014)O

ct 2

00

4

Publ

Oct

20

07

Ma

r 2

00

6

No

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00

8

PhD StudentPG

Assistant

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Aerodynamics and AeroelasticityJa

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7

Jan

20

09

P.E

.

Ma

r 2

00

5

No

v 2

00

5

Jan

20

05

Jan

20

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Jun

20

07

Jan

20

08

(Sapienza University of Rome)

Jun

20

05

PBD for WindM

ar

20

12

Ma

r 2

01

1

Associate Researcher

PBD for Wind, Earthquake, Fire, Blast

Resilience

Energy Harvesting

Ma

y 2

01

1

ICASP’11

(Swizerland) – MS ChairJun

20

11

Jan

20

11

Ag

o 2

01

1

Ap

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2

Jan

20

13

PMC’12 (USA) – SS Chair

Jan

20

12

ASCE E&S ’10 (USA)

Ph

D d

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ree

Jan

20

10

Post-Doc Research Associate

Ma

r 2

01

0

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(Sapienza

University

of Rome)(Sapienza University of Rome)

2008

Jun

20

13

Jan

20

14

ICOSSAR 2013

(USA) – MS Chair

Gu

est

Ed

ito

r

Spin-off company

Spin-off

company

2012IABMAS’11

(Italy) – SS Chair

20132011

20102009200720062005

Overview of my career development (2005-2014)O

ct 2

00

4

Publ

Oct

20

07

Ma

r 2

00

6

No

v 2

00

8

PhD StudentPG

Assistant

Ma

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00

9A

pr

20

09

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20

09

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P.E

.

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No

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5

Jan

20

05

Jan

20

06

Jun

20

07

Jan

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Jun

20

05

PBD for WindM

ar

20

12

Ma

r 2

01

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Resilience

Energy Harvesting

Ma

y 2

01

1

ICASP’11

(Swizerland) – MS ChairJun

20

11

Jan

20

11

Ag

o 2

01

1

Ap

r 2

01

2

Jan

20

13


Jan

20

12


Ph

D d

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Jan

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10


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Publ

(Sapienza

University


2008

Jun

20

13

Jan

20

14

ICOSSAR 2013

(USA) – MS Chair

Gu

est

Ed

ito

r

Spin-off company

MARCELLO

Spin-off

company

2012 20132011

20102009200720062005

Oct

20

04

Publ

Oct

20

07

Ma

r 2

00

6

No

v 2

00

8

PhD StudentPG

Assistant

Ma

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.

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No

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5

Jan

20

05

Jan

20

06

Jun

20

07

Jan

20

08

Jun

20

05

PBD for WindM

ar

20

12

Ma

r 2

01

1



Resilience

Energy Harvesting

Ma

y 2

01

1

Jun

20

11

Jan

20

11

Ag

o 2

01

1

Ap

r 2

01

2

Jan

20

13

Jan

20

12


Ph

D d

eg

ree

Jan

20

10


Ma

r 2

01

0

Au

g2

01

0

Publ

(Sapienza

University


2008

Jun

20

13

Jan

20

14

ICOSSAR 2013

(USA) – MS Chair

Gu

est

Ed

ito

r

Spin-off company

IABMAS’11

(Italy) – SS ChairICASP’11

(Swizerland) – MS Chair


Marcello’s influence in my career development (2005-2014)


MARCELLO

Performance-Based Wind Engineering

(PBWE)


O

f(IM|O)

f(IM)f(IP|IM,SP)

f(IP)

f(EDP|IM,IP,SP)

G(EDP)

f(DM|EDP)

G(DM)

f(DV|DM)

G(DV)

Hazard analysis

Interaction

analysisStructural analysis Damage analysis Loss analysis

IM: intensity

measure

IP: interaction

parametersEDP: engineering

demand param.DM: damage

measure

DV: decision

variable

Select

O, DO: location

D: design

Environme

nt info

Decision-

making

D

f(SP|D)

f(SP)

Structural

characterization

SP: structural

system parameters

Structural

system

info

PBWE- FrameworkG(DV) = ∫…∫ G(DV|DM) · f(DM|EDP) · f(EDP|IM, IP, SP) · f(IP||||IM,SP) ·

· f(IM) · f(SP) · dDM · dEDP · dIP · dIM · dSP

Interaction Parameters

Structural Parameters

Intensity measure IM IPSP

Engineering Demand Parameters

EDPDamage Measure DM

Decision Variable DV

Ciampoli M., Petrini F., Augusti G., (2011). “Performance-Based Wind Engineering: towards a general procedure”,

Structural Safety, 33 (6), 367-378

G(·|·) is a conditional

complementary

cumulative distribution

function

f(·|·) is a conditional

probability density

function = progress with respect to the Performance-Based Seismic Design

*

* *

Extension of the Performance-Based

Seismic Design procedure proposed by PEER Research center

PB

WE

–T

he

fra

me

wo

rk


Performance-Based Wind Engineering (PBWE)-

Uncertainties propagation

PB

WE

–T

he

co

nce

pt

Petrini F.(2009). “A probabilistic approach to Performance-Based Wind Engineering”, Ph.D. dissertation, department of

Structural and Geotechnical Engineering, Sapienza University of Rome, Rome, Italy

ENVIRONMENT

Wind

action

Structural

systems

Non

environmental

actions

EXCHANGE ZONE

Site-specific

Wind

Aerodynamic and

aeroelastic

phenomenaWind site

basic

parameters

Environmental

effects (e.g.

waves)

Structural

system as modified

by service loads

STRUCTURAL SYSTEM

Vm

Mean wind velocity profile

Vm+ v(t)

Turbulent wind velocity profileriv

er

Vm

Mean wind velocity profile

Vm+ v(t)

Turbulent wind velocity profileriv

erriv

er

ENVIRONMENT EXCHANGE ZONE


Types of uncertainties

ENVIRONMENT

Wind

action

Structural

systems

Non

environmental

actions

EXCHANGE ZONE

1. Aleatory

2. Epistemic

3. Model

Interaction

parametersStructural parameters

Site-specific

Wind

Aerodynamic and

aeroelastic

phenomenaWind site

basic

parameters

Intensity measure

1. Aleatory

2. Epistemic

3. Model

1. Aleatory

2. Epistemic

3. Model

Environmental

effects (e.g.

waves)

Structural

system as modified

by service loads

( )IM ( )IP ( )SP

STRUCTURAL SYSTEM

( ) ( ) ( ) ( )SPPIMPSP,IMIPPSP,IP,IMP ⋅⋅=

Performance-Based Wind Engineering (PBWE)-

Uncertainties propagation

Petrini, F. & Ciampoli M., 2012, Performance-based wind design of tall buildings, Structure & Infrastructure

Engineering, 8(10), 954-966.

PB

WE

–T

he

co

nce

pt


PBWE

Applications


0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

0 5 10 15 20 25 30 35

P(Av > av*|Vm(zdeck))

Vm(zdeck) [m/s]



Performance Evaluation (EDP=Vertical acceleration)

Fra

gil

ity

cu

rve

s P

(ED

P|

IM)

Fail

ure

pro

ba

bil

ity

G(E

DP

)

PBWE-Application on a long span suspension bridge

Vento = f(s,t)

Vento = f(s,t)

Vento = f(s,t)

Vento = f(s,t)

EDPs

0.07

1.1

Different

threshold

values

PB

WE

–T

he

fir

st a

pp

lica

tio

n


PBWE-Application on an High-rise building

Ciampoli M, Petrini F. (2011). “Performance-Based Aeolian Risk assessment and reduction for tall buildings”,

Probabilistic Engineering Mechanics, 28, 75–84.

Improvement of the occupant comfort by a TMD

TMD Design Parameters

γ = mTMD/mtot β = ωTMD/ ω1 ξ* = damping of TMD

Parametric analysis

Effects on risk

90

0.125 0.145 0.165 0.185

β = 0.70 ; ξ* = 1% - 10% β = 0.80 ; ξ* = 1% - 10%

β = 0.90 ; ξ* = 1% - 10% β = 1.02 ; ξ* = 1% - 10%

β = 1.10 ; ξ* = 1% - 10% β = 1.20 ; ξ* = 1% - 10%

β = 1.30 ; ξ* = 1% - 10% Uncontrolled

Apartment Office

aL

p[m

m/s

2]

n [Hz]

β = ξ* =

β = ξ* =

β = ξ* =

β = ξ* =

β = ξ* =

β = ξ* =

β = ξ* =

γ = 1/150

w(t;z2)Vm(z2)

Vm (z1)

Vm (z3)

V(t;z2)

v(t;z2)u(t;z2)

X

Z

Y

θ

B1

B2

H

aLp

TMD

EDP = peak across-wind acceleration at the top floor ( )aLpP

BW

E –

Th

e a

dva

nce

d a

pp

lica

tio

n


PBWE-Application on an Offshore Wind Turbine

x,x’

z’

y’

Waves

Current

P

(t)vP

(t)w P

(t)u P

Turbulent

windP

Mean

wind

Vm(zP)

z

yH

h

vw(z’)

Vcur(z’)

d

Terrain

Performance evaluation

Acro

ss win

d d

irectio

n

1°1°1°1°

rp

1°1°1°1°

rp

EDP = peak displacement

at the hub (rp)

G[E

DP

]

EDP [m]

The structural response is

obtained by analyses in the

frequency domain, while the

statistical characterization of

the response is obtained using

Monte Carlo simulation

Ciampoli M., Petrini F. (2010). Performance-Based Design of Offshore Wind Turbines, 2th biennial ASCE Aerospace

Division International Conference (Earth & Space 2010), Honolulu, USA, 14 – 17 March 2010. ISBN 978-0-7844-1096-7

PB

WE

–T

he

evo

luti

on


What’s Next?

Marcello’s influence to my actual work


PBE- in a Multi-Hazard environment

Ma

rce

llo

’s in

flu

en

ce t

o m

y a

ctu

al w

ork

O

f(IM|O)

f(IM)

f(IP|IM,SP)

f(IP)

f(EDP|IM,IP,SP)

G(EDP)

f(DM|EDP)

G(DM)

f(DV|DM)

G(DV)

Hazard analysis

(Considering

concurrence

between hazards) Interaction

analysisStructural analysis Damage

analysisLoss analysis

IM: intensity

measures

IP: interaction

parameters

EDP: engineering

demand parametersDM: damage

measures

DV: decision

variables

Select

O, De

O: location

De: design

Environment

info Decision-

making

De

f(SP|De)

f(SP)

Structural

characterization

SP: structural

parametersStructural

system

info

De(DM)

In case of hazards chain

ENVIRONMENT

Hurricane

action

Original

structure

Non

environmental

actions

STRUCTURAL SYSTEM

Structure-

Environment

Interaction

Wind

(Aeolian hazard)

Water bodies

(Flood hazard) Modified

structural

systemSources of

windborne debris

(Windborne

debris hazard)

Rain

(Rainfall hazard)

W

F

D

RA

IM S

A

SPIP

EXCHANGE ZONE

= Interaction= It results

Site-specific

Hazard

= Uncertainty propagation

Developed in collaboration with: Michele Barbato, Louisiana State UniversityW, F, D, RA = Intensity Measure vectors for individual hazards,

S, A = vector of stochastic parameters describing the structural system

Guest Editor for a special issue on PBE


Ma

rce

llo

’s in

flu

en

ce t

o m

y a

ctu

al w

ork

Michele Barbato

Associate Professor

Louisiana State University and

A&M College

Baton Rouge, LA 70803, USA

[email protected]

Alessandro Palmeri

Senior Lecturer

Loughborough University

Sir Frank Gibb Building,

Loughborough LE11 3TU, UK

[email protected]

Francesco Petrini


Sapienza Università di Roma

Via Eudossiana 18

00184 Rome, ITALY

[email protected]

33 contribution have been presented

Special Issue of Engineering Structures (Elsevier) on:

Performance-Based Engineering

Guest Editor

Marcello taught me

how to write a good paper ….

… and he did it in a very “soft” way


Bullshits VS Brilliant things

He

ta

ug

ht

me

ho

w t

o w

rite

a g

oo

d p

ap

er



Io: “Professore, e adesso cosa facciamo?” ;

“Professor, how can we arrange this?


Ricevemmo una review “non proprio” positiva

The Reviewer was not so happy about the manuscript

Bullshits VS Brilliant things

Marcello: “è semplice: le stronzate dell’articolo le hai scritte tutte tu, e

le cose intelligenti io, quindi lascia fare me, che tu meno fai e meglio è”;

“it is very simple: the bullshits in the paper are all from

your side, the brilliant parts are from my side… so: leave it

to me please”



Io: “Professore, e adesso cosa facciamo?” ;

“Professor, how can we arrange this?


Ricevemmo una review “non proprio” positiva

The Reviewer was not so happy about the manuscript

He

ta

ug

ht

me

ho

w t

o w

rite

a g

oo

d p

ap

er

Fatal combination of circumstances!Ciampoli M., Petrini F. (2010). Performance-Based Design of Offshore Wind Turbines, 2th biennial ASCE Aerospace Division International

Conference (Earth & Space 2010), Honolulu, USA, 14 – 17 March 2010. ISBN 978-0-7844-1096-7

... 15 Marzo 2010, Eravamo alle Hawaii per un convegno, lui era uscito dalla sala e si era

infilato in un bellissimo negozio, io lo avevo seguito……….

…. March 15°, 2010. We were in Hawaii Islands for a Conference, He Escape

from the conference hall and entered in a wonderful shop. I was with him ….

Io: “Professore, domani abbiamo la presentazione, non è meglio che

ci prepariamo?” ;

“Professor, we will present our work tomorrow, maybe is

better if we go back for preparing it”


Cre

dit

ca

rd!

Fatal combination of circumstances!Ciampoli M., Petrini F. (2010). Performance-Based Design of Offshore Wind Turbines, 2th biennial ASCE Aerospace Division International

Conference (Earth & Space 2010), Honolulu, USA, 14 – 17 March 2010. ISBN 978-0-7844-1096-7

Io: “Professore, domani abbiamo la presentazione, non è meglio che

ci prepariamo?” ;

“Professor, we will present our work tomorrow, maybe is

better if we go back for preparing it”

Marcello: “senti: siamo alle Hawaii, è il giorno del mio compleanno, e

la mia carta di credito è piena….questa è una terribile combinazione di

eventi!”

” listen me: we are in Hawaii Islands, today is my birthday,

and my credit card is full …. Thi is a fatal combination of

circumstances!. ”


Cre

dit

ca

rd!

... 15 Marzo 2010, Eravamo alle Hawaii per un convegno, lui era uscito dalla sala e si era

infilato in un bellissimo negozio, io lo avevo seguito……….

…. March 15°, 2010. We were in Hawaii Islands for a Conference, He Escape

from the conference hall and entered in a wonderful shop. I was with him ….

What is your research topic?Petrini F., Ciampoli M., (2012). “Performance-based wind design of tall buildings”, Structure & Infrastructure Engineering - Maintenance,

Management, Life-Cycle Design & Performance, 8 (10), 954-966. DOI: 10.1080/15732479.2011.574815

Io: “Professore, qual’è il topic di ricerca della professoressa -----?” ;

“Marcello, what is the research topic of professor -----?”


... Eravamo nella sua stanza a lavorare al paper. Entra in ufficio una professoressa molto

bella e vestita benissimo, per chiedergli delle cose. Dopo che se ne era andata...

…. We was warking on the paper in his room. At a certain point entered a very

beautiful women (that is professor in our department) in the office, asking for something ….

Petrini F., Ciampoli M., (2012). “Performance-based wind design of tall buildings”, Structure & Infrastructure Engineering - Maintenance,

Management, Life-Cycle Design & Performance, 8 (10), 954-966. DOI: 10.1080/15732479.2011.574815

Io: “Professore, qual’è il topic di ricerca della professoressa -----?” ;

“Marcello, what is the research topic of professor -----?”

Marcello: “VECCHIO PORCOi!”

” You are a PIG! ”


... Eravamo nella sua stanza a lavorare al paper. Entra in ufficio una professoressa

BELLISSIMA e vestita benissimo, per chiedergli delle cose. Dopo che se ne era andata...

…. We was warking on the paper in his room. At a certain point entered a very

beautiful women (that is professor in our department) in the office, asking for something ….

What is your research topic?

Mentale Vs FisicoCiampoli M, Petrini F. (2011). “Performance-Based Aeolian Risk assessment and reduction for tall buildings”,


... Avevo inviato di Venerdi a Marcello una prima bozza del paper, per farglielo leggere il

week-end……. Al lunedi gli busso in ufficio……….

…. I had prepared a very first draft of the paper, in order to allow him to read

the draft during the week-end…. The successive Monday in his hoffice….

Io: “Professore: ha letto la bozza del paper che le ho mandato?”

“Did you read the draft of the paper?

Marcello: “Ma certo!”;

“yes of course!”

Io: “Bè? Che ne pensa?”

“And what is your feeling about it?


He

ta

ug

ht

me

ma

ny

th

ing

s, t

he

im

po

rta

nce

of

no

t ta

kin

g m

yse

lf t

oo

se

rio

usl

y

Mentale Vs Fisico

Marcello: “Guarda: sono arrivato a leggere fino a pag. 2, poi ero

talmente stufo di masturbarmi mentalmente per capire cosa volevi dire

col tuo inglese, che ho preferito andare in bagno e farlo fisicamente…”

” ……. ” I AM NOT ABLE TO TRANSLATE IT IN ENGLISH!

Ciampoli M, Petrini F. (2011). “Performance-Based Aeolian Risk assessment and reduction for tall buildings”,


Io: “Professore: ha letto la bozza del paper che le ho mandato?”

“Did you read the draft of the paper?

Marcello: “Ma certo!”;

“yes of course!”

Io: “Bè? Che ne pensa?”

“And what is your feeling about it?


... Avevo inviato di Venerdi a Marcello una prima bozza del paper, per farglielo leggere il

week-end……. Al lunedi gli busso in ufficio……….

…. I had prepared a very first draft of the paper, in order to allow him to read

the draft during the week-end…. The successive Monday in his hoffice….

He

ta

ug

ht

me

ma

ny

th

ing

s, t

he

im

po

rta

nce

of

no

t ta

kin

g m

yse

lf t

oo

se

rio

usl

y

Era terribile andare in giro con lui

He

wa

s te

rrib

le!

... Era capace di attaccare discorso con tutti! ……….

…. He was able to start a conversation with anyone….

Marcello MarcelloNOT Marcello

I am not still angry……

My r

eg

ret

... Durante l’ultimo periodo, Marcello era un pò arrabbiato con me … ancora oggi non ne conosco il vero

motivo. Lo avevo invitato piu volte a prendere un caffè insieme, per capire. Ma lui aveva (molto signorilmente)

declinato. Alla fine avevo deciso di non insistere, e di aspettare il tempo di cui aveva bisogno per perdonarmi e

spiegarmi…… ma purtroppo questo tempo non ce lo abbiamo avuto.

Anche io mi ero arrabbiato con lui! Ma voglio dirgli che ora non lo sono più!

During the last period, I realized that he was little bit

angry with me. I never understood the motivation

and he did not explain me. I tried to take a coffee

with him in order to speak about it, but he declined

(always in a very polite way). I finally decided to not

make pressure on him and to allow him to

take his time. But, unfortunately this time was not

allowed. I was also angry with him!

But I would like to say that I am not still angry

with him NOW!


…. now I am grateful

Ack

no

wle

dg

me

nts


Un caro ringraziamento a MARCELLO CIAMPOLI,

che mi ha insegnato veramente tanto sulla ricerca ma che, soprattutto,

mi ha insegnato che non bisogna mai prendersi troppo sul serio.

I would like to give my acnowledgments to Marcello Ciampoli He taught me

many things regarding the scientific research, but the most valuable of

these is the importance of not taking myself too seriously

Francesco Petrini

(09/12/2014)