03.03.2009 Cologne´s tunnel tube disaster
Annual IMIA Conference - Berlin, 14.09.2010
Jens Manderfeld E-TVS Essen Cologne´s tunnel tube disaster
¾ Jens Manderfeld
¾ Degree in Civil Engineering and Business Administration and Engineering
¾ 1993 - 2001 Structural Engineer / Site Manager
¾ 2002 - 2003 Gerling Risk Management Department
¾ 2003 - today HDI-Gerling Claims Management Engineering (CAR / EAR)
¾ Responsible claims manager for the project “Nord-Süd-Stadtbahn Köln”
HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -2- Berlin, 14.09.2010 Cologne´s tunnel tube disaster
International Engineering market German speaking Eng. market
Co-Insurer Lead Insurer Co-Insurer Lead Insurer Claims-dep.
Lawyer Loss Adjuster Broker Broker Experts, Experts Lawyer
Insured Insured
HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -3- Berlin, 14.09.2010 Cologne´s tunnel tube disaster
¾ General information about the project
¾ Track crossover structure (Gleiswechselbauwerk)
¾ Collapse of the archive on March 3rd 2009
¾ Possible cause of loss
¾ Further site activities
¾ Characteristic of the German CAR Wordings
HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -4- Berlin, 14.09.2010 General information about the project Location of the project
HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -5- Berlin, 14.09.2010 General information about the project
¾ Length ca. 4 km
¾ 8 underground stations
¾ Max depth: 30 meter
¾ Construction period (scheduled) 2004 – 2010
¾ Completion expected 2016
¾ Estimated constr. value / insured sum 630 Mio €
¾ Final constr. costs ? Mio €
HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -6- Berlin, 14.09.2010 Track crossover structure (Gleiswechselbauwerk) Topview
HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -7- Berlin, 14.09.2010 Track crossover structure Construction sequence 1
+47,80m
Water table
1.) Diaphragm walls down to –45m 1 1
+12,80m Water resistant layer (tertiary)
HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen +2,80m -8- Berlin, 14.09.2010 Track crossover structure Construction sequence 2
+47,80m
Water table
2.) Tunnelling works diameter 7.30m
2
+12,80m
HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen +2,80m -9- Berlin, 14.09.2010 Track crossover structure Construction sequence 3 3 +47,80m
3.) Dewatering system
3 +12,80m
HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen +2,80m -10- Berlin, 14.09.2010 Track crossover structure Construction sequences 4 - 7
6 +47,80m
5 5 4
+36,00m
4.) Excavation of 12 m 7 5.) Grouted anchor 6.) Temporary steel ceiling 7.) Concrete slab I as final concr. ceiling I +12,80m
HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen +2,80m -11- Berlin, 14.09.2010 Track crossover structure Construction sequences 8 - 9
+47,80m
+36,00m 8.) Excavation of next 8 6 m +29,95m
9.) Concrete slab II as 9 final concrete ceiling II
+12,80m
HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen +2,80m -12- Berlin, 14.09.2010 Track crossover structure Construction sequences 10 - 12
+47,80m
+36,00m 10.) Excavation of next 8 m +29,95m 11.) Dismantling of 11 tunnel tube in the crossover structure 10 12.) Bottom slab +21,80m 12 +12,80m
HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen +2,80m -13- Berlin, 14.09.2010 Track crossover structure Construction sequences 13 - 14
+47,80m
13
+36,00m
13.) Backfilling and 14 asphalt works +29,95m 14.) Final works
14 +21,80m
+12,80m Water resistant layer (tertiary)
HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen +2,80m -14- Berlin, 14.09.2010 Collapse of the archive on March 3rd 2010 Historical town archive Cologne
¾ Built in 1971
¾ Largest town archive north of the alps
¾ 30 km storage space
¾ Oldest document dates back to the year 922
¾ Contents sum insured 60 Mio. €
HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -15- Berlin, 14.09.2010 Collapse of the town archive on March 3rd 2009 Location of archive and track crossover structure
HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -16- Berlin, 14.09.2010 Collapse of the town archive on March 3rd 2009
HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -17- Berlin, 14.09.2010 Collapse of the town archive on March 3rd 2009 3.000m³ of soil (gravel)
HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -18- Berlin, 14.09.2010 Collapse of the town archive on March 3rd 2009 3.000m³ of soil (gravel)
HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -19- Berlin, 14.09.2010 Collapse of the town archive on March 3rd 2009 3.000m³ of soil (gravel)
HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -20- Berlin, 14.09.2010 Collapse of the town archive on March 3rd 2009 Demolition rubble in the structure
HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -21- Berlin, 14.09.2010 Collapse of the town archive on March 3rd 2009 Protection measures for the archive contents
HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -22- Berlin, 14.09.2010 Collapse of the town archive on March 3rd 2009 Damaged property
+47,80m
+36,00m
- Temporary steel ceiling - Debris and soil in the structure +29,95m - Cracks in concrete construction - Movement of the structure 3.000m³ - Loosening and loss of the +21,80m surrounding soil - Dewatering system +12,80m Water resistant layer (tertiary) +2,80m HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -23- Berlin, 14.09.2010 Cologne´s tunnel tube disaster Possible cause of loss
Cause is still under investigation by
¾ The public attorney's office
¾ The independent experts nominated by the court
HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -24- Berlin, 14.09.2010 Cologne´s tunnel tube disaster Possible cause of loss - Scenario I
Scenario I Removal of soil by the dewatering system has caused a local separation
HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -25- Berlin, 14.09.2010 Cologne´s tunnel tube disaster Possible cause of loss - Scenario II
Scenario II Imperfection in the diaphragm wall
HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -26- Berlin, 14.09.2010 Cologne´s tunnel tube disaster Possible cause of loss
Soil investigation 18.11.2009
HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -27- Berlin, 14.09.2010 Cologne´s tunnel tube disaster Further site activities
Next steps:
1.) Temporary structure for the recovery of remaining archives contents
2.) Temporary structure for the inspection of the diaphragm wall
3.) Reinstatement works
HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -28- Berlin, 14.09.2010 Cologne´s tunnel tube disaster Characteristic of the German CAR Wordings
Insured property in standard German wordings
¾ Construction work
¾ Building materials, prefabricated parts
¾ Temporary structures
HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -29- Berlin, 14.09.2010 Cologne´s tunnel tube disaster Characteristic of the German CAR Wordings
On application: the surrounding building ground / subsoil up to a first risk sum.
Examples for clauses:
¾ Surrounding Building ground / subsoil is insured against all kind of perils
¾ Surrounding Building ground / subsoil is insured only as a result of covered loss
¾ Surrounding Building ground / subsoil is insured only as a result of a loss
HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -30- Berlin, 14.09.2010 Cologne´s tunnel tube disaster
¾ The collapse of the archive is not the result of a typical tunnel risk
¾ The collapse of the archive is the result of an excavation pit risk
HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -31- Berlin, 14.09.2010