foundation improvement of historical buildings by micro ... · 7th ism workschop 2006,...

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Foundation improvement ofhistorical buildings by micro piles

Museum Island Berlin,St. Kolumba Cologne

Dipl.-Ing. Klaus DietzDr.-Ing. André Schürmann

Dietz Geotechnik Consult GmbH, Hilden, GermanyStump Spezialtiefbau GmbH, Langenfeld, Germany

7th ISM workschop 2006, Schrobenhausen 2

structuring

1. introduction

2. micro pile as foundation improvement element

3. case histories3.1 Museum Island, Berlin3.2 St. Kolumba, Cologne

4. conclusions


Stump-system steel-tube pile

Stump-system composite pile


Load bearing systems and wall connections

Wall-recess

tensionanchor

micro pile

mortar connectionbeam

plug in girder


Museum Island, Berlin

New Museum

Erected 1841 – 1855

Destroyed WW II

Renovation 1990 - 2009


Museum Island, Berlin

New Museum


„Mudde“muddy soil

dense-medium sand


History of St. Kolumba

church before WW II church short before renovation


concept of new

Diözesanmuseum

above the ruins

of St. Kolumba

by

Peter Zumtor


Foundation concept new Diözesanmuseum

cross section digging field

RB +12,919

OK Kuppel+12,919

+0,073

bestehende Kapelle

Ø 298,5 x 30 mm

GEWI-PfahlØ 32 mm

GEWI-PfahlØ 63,5 mm

GEWI-Mehrstabpfahl2 x 40 mm + 1 x 50 mmGEWI-Pfahl Ø63,5 mm

Ø 298,5 x 30 mm

Grabungsfeld

RB +12,919


preparing investigations

before

masonry core

after grouting

test drilling


preparing investigations

execution of pile test

Kraft - Verschiebungsdiagramm, Pfahl G1

0

5

10

15

20

25

30

0 500 1000 1500 2000 2500 3000 3500 4000

Kraft [kN]

Ver

schi

ebun

g [m

m]

proaf load 4000 kNpile test equipment

disp

lace

men

t[m

m]

Load displacement diagram, test pile G1Load [kN]


View arrangement of implants and nailcolumns

internal column

support constructionimplant


implant in theoutside walls(cross section and view, detail implantcoupling)

Steel tupe 298,5x 30mm

Steel tubeextension

Reinforcedconrete Beam

Masonrynew building

GEWI single bar-or multi bar-pile

Bend securingGEWI-pile2x 32mm

Ground level

High-quality steel tube

Existing masonryof ruin

Top ofexcavation

Old foundation arch

Gravel

VaultPre-stabilizationof masonry

+7,14m top of implant

Bottom level implant

Cross-section View


view masonry column and cross section implant

Steel tube (298,5 x 30 mm)Special-steel-protection tube (330 x 5 mm)

GEWI-pile

grout

Steel-tubeProtection tube

Cross section


5

1

2

3

4

Pile production


Core drilling through the old walls


drilling for pile installation


foundation nailcolumns digging field

□ 350/350/30 mm+12,26

10 StahlrohrØ 289,5 x 30mm

10 Brandschutz

420/420/60 mm

Ankerbolzen

Pagel Verguss

7036

36

verdichtete Anschüttung (Kies)

Kontermutter

AnkermutterAnkerplatte

Sauberkeitsschicht

KunststoffripprohrDistanzhalter

Bohrung Ø 220 mm

GEWI-Pfahl Ø 63,5 mmmit doppeltem Korrosionsschutz

Pfahlneigung 10° zur Vertikalen

Einb

i nd e

t i efe

t =

6 m im

ge w

a ch s

e ne n

Kie

s /S a

n d

Einbindetiefe t = 6m im gewachsenen Kies/Sand


Drilling for micro piles at the chapel and on the digging field


conclusions

• introduction of project specific measures• quality safety programme


Thank you for yourattention

foundation improvement of historical buildings by micro ... · 7th ism workschop 2006,...

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