formand for s1992 - velkommen til dansk … stresses from prestressing torsion tsd shear vsd bending...

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DS/EN 1992-1-1 DK NA, REVISION 2017

OG

REVISION AF EUROCODE

Bent Feddersen, RambøllFormand for S1992

Dansk Betondag/DK NA og Eurocoderevision/BF/2017.10.05

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DS/EN 1992-1-1 DK NA:2017 Rustfri armering


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DS/EN 1992-1-1 DK NA:2017 Fuger og U-bøjler


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3

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fcc

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DS/EN 1992-1-1 DK NA:2017 Kombineret V, M, N og T


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Dansk Betondag/DK NA og Eurocoderevision/BF/2017.10.05Dansk Betondag/DK NA og

Eurocoderevision/BF/2017.10.05

8Dansk Betondag/DK NA og Eurocoderevision/BF/2017.10.05

The cross section is transformed into an effective cross section. Each individual thin wall of the effective cross section has its own thickness. bi and hi is the distance from centre to centre of the thin walls.

z

y

NSd

TSd

VSdy

VSdz

MSdyMSdz

h

b

hi

bi

to

tu

thtv

The section forces is distributed to the effective cross section as a statically admissible stress distribution.

The stresses in each wall are handled as plane stress fields.


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+

-

MSdy

otihibSdyM

−

utihibSdyM

+-

MSdz

htihibSdzM

vtihibSdzM

−


+ +

VSdz

+

+

++

+

SdzVvtibih

htb2

)( −SdzV

htibihvtb

2)( −

SdzVotibih

htb2

)( −SdzV

otibihvtb

2)( −

SdzVutibih

htb2

)( −SdzV

utibihvtb

2)( −

+

+

VSdy

+ +

+ +

SdyVutibih

oth2

)( −

SdyVotibih

uth2

)( −

SdyVvtibih

oth2

)( −

SdyVvtibih

uth2

)( −

SdyVhtibih

oth2

)( −

SdyVhtibih

uth2

)( −

TSd

+

+

+

+

utihibSdT

2

otihibSdT

2

vtihibSdT

2 htihibSdT

2

NSdo, NSdu, NSdv, NSdh and NSdm can be chosen freely as long as following conditions are fulfilled:

NSd = Nsdo + Nsdu + Nsdv + Nsdh + Nsdm

(h – to) Nsdo = (h – tu) Nsdu

(h – tv) Nsdv = (h – th) Nsdh

Note that the part of NSd to be carried by the thin walls reduce the longitudinal reinforcement, if it is a compression force.

NSd

+

+

+

+

+

otibSdoN

utibSduN

vtihSdvN

htihSdhN

−− ),max(2),max(2 htvtbutoth

SdmN

Stresses from prestressing Torsion TSd

Bending MSdShear VSd 10

Bridge


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DS/EN 1992-1-1 DK NA:2017 Betons trækstyrke


Tøjning

Revnevidde

Urevnet

Udviklende revnefase- revner dannes- revnevidde ~ konstant

Fuldt udviklet revnesystem- revner dannes ikke længere- revnevidde vokser med voksende tøjning

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DS/EN 1992-1-1 DK NA:2017 Betons trækstyrke


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DS/EN 1992-1-1 DK NA:2017 Trykarmering


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DS/EN 1992-1-1 DK NA:2017 U-bøjler langs rand


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DS/EN 1992-1-1 DK NA:2017 Robusthed


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DS/EN 1992-1-1 DK NA:2017 Robusthed


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DS/EN 1992-1-1 DK NA:2017 Miljøklasser


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Konstruktionsdel PMP MMP AMP EAMPFunderingspæl XC2, XA1 XC2, XA2Fundamenter under terrænFundamenter over terræn


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NYE EUROCODES


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Revision generelt

Tidsplan


Eurocodes udkommer som en samlet pakke 2020.

De enkelte Eurocodes færdiggøres i etaper.

Nationale annekser

Omfang skal reduceres.

TBBST har meldt ud, at de kun vil acceptere få nationale bestemmelser om nogen!

Betonområdet


Organisation CEN

LinhJesper Frøbert

Jacob Wittrup

Claus V. Nielsen

TG10

“Durability”

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2

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Betonområdet


Fremover vil betonområdet bestå af følgende konstruktionsnormer:

DS/EN 1992-1-1, General rules and rules for buildings, bridges and civil engineering structures(afsluttes april 2018)

DS/EN 1992-1-2, Structural fire design(afsluttes ?)

Tidsplan


DS/EN 1992-1-1, Høringsudkast april 2017Høringsudkast oktober 2017April 2018, PT afleverer endelig udgave

DS/EN 1992-1-2, Høringsudkast ?Høringsudkast ??, PT afleverer endelig udgave

Betonområdet

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DS/EN 1992-1-1

Indholdsfortegnelse


Kapitel Titel1 General2 Basis of design3 Materials4 Durability and cover to reinforcement5 Structural analysis6 Ultimate Limit States (ULS)7 Serviceability Limit States (SLS)8 Detailing of reinforcement and past-tensioning tendons9 Detailing of members and particular rules10 Additional rules for precast concrete elements and structures12 Plain and lightly reinforced concrete structures

DS/EN 1992-1-1Indholdsfortegnelse


Annex TitelA Modification of partial factors for materialsB Creep, shrinkage and elastic strainC Durability and service life designD Guidance to restrict early age crackingE Additional rules for fatigue verificationF Non-linear analysis proceduresG Design of membrane-, shell- and slab elements at ULSH Guidance on design of concrete structures for water-tightnessI Assessment of resistance of existing concrete structuresJ Strengthening of existing concrete structures with FRPK Bridges, particular design conditionsL Fibres reinforced concreteM Lightweight aggregate concrete structuresN Simplified approaches for second order effects

En gang i fremtiden

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DS/EN 1992-1-1

Indholdsfortegnelse



DS/EN 1992-1-1

Indholdsfortegnelse



Durability and service life design

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DS/EN 1992-1-1

Indholdsfortegnelse



Geometric imperfections

Linear elastic analysisPlastic analysis• Plastic analysis of beams, frames and

slabs• Analysis with stress fields and strut-

and-tie models• Non-linear analysis

DS/EN 1992-1-1

Indholdsfortegnelse



• Bending in slabs• Shear, shear and none-shear reinforced

(cirkulære tværsnit)• Shear at interfaces• Torsion• Combined actions (V, M, N og V, M, N, T)• Punching shear• Design with strut-and-tie and stress fields

(inkluderer stringermetode og homogenespændingsfelter)

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DS/EN 1992-1-1

Indholdsfortegnelse



• Cracks for temperature, shrinkage and creep.

• Cracks in early age concrete.• Biaxial stress fields

DS/EN 1992-1-1

Indholdsfortegnelse



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DS/EN 1992-1-1

Indholdsfortegnelse



• Generelle regler for minimumsarmering for robusthed

• Minimumsarmeringsregler for konstruktionsdele




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Nuværende DS/EN 1992-3

formand for s1992 - velkommen til dansk … stresses from prestressing torsion tsd shear vsd bending...

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