BIM reinforcement for infrastructureSimon Solbjørg | Aas-Jakobsen

CIVIL CONSTRUCTIONCONTINUUM CONFERENCE

13. – 14. November 2017 | Copenhagen

BIM reinforcement for infrastructure

Oslo Airport Gardermoen Bergen Airport Flesland Main plate Munch Museum

Mustad Concrete Tunnel Kommisrud Railway Culvert

My guiding thought

Give me six hours to chop down a tree and I will spend the first four sharpening the axe.

Abraham Lincoln

Mustad Concrete Tunnel

Mustad Concrete Tunnel

Mustad Concrete Tunnel

Mustad Concrete Tunnel• Client: Mustad Eiendom

• Owner: Statens Vegvesen (Norwegian Public Roads Administration)

• Contractor: Skanska

• Type of construction: Cast in place reinforced concrete tunnel

• Amount of concrete: 25.000 m3

• Amount of rebars: 5 150 tons

Mustad Concrete Tunnel• Complicated geometry

• Great slopes in both directions >= 8%

• Sharp slope changes

• Small radiuses, r<20m

• Intersections with all of the above challenges

• A four five meter transitions from rectangular to curved cross section.

“BIM” vs 2D• Started out as a AutoCAD 2D/3D DWG

project.

• To reinforce this in AutoCAD was time consuming and difficult.

• I claimed this would be faster in Tekla Structures. • And, I was right.

“BIM” reinforcement workflow

• 3D DWG as a reference in Tekla.

• Remodel the tunnel with Tekla native objects

• Automated reinforcement (with custom components) wherever possible

• Automated reinforcement marks (by classifying the rebars)

• Drawings entirely based on the Tekla model

• Automated Rebar schedules from Tekla

We intend to cut all the rusty steps in the future!

Classification• Two concepts: PREFIX and CLASS

• Prefix to determine position of the reinforcement.• Construction number (i.e. K51)

• Section number (i.e. 03)

• Object type (i.e. wall, slab etc.)

• If listed by meters “L”

• Class for enriching the drawings and IFC models• Barcode concept

Showcase Mustad

• Present the Tekla model

• Present the classification system

• Present some basic custom components

• Present inquire and rebar marks from drawings

• Present a few examples of custom components (sharpening the axe)

Showcase InterCity

• Present the Tekla model

• Present the cast unit concept

• Present a few custom components

The two pillars of efficient BIM reinforcement

• Automated modelling• Reduces time spent modelling with maybe 90 %• Precludes human error

• “Never trust a man to do a machines job” – The Matrix

• Leads to uniform solutions• Perfect positioning and classification of the rebars

• Precise classification in order to• Achieve correct marks in the drawings and IFCs• Use filters efficiently• Subdivide the rebar schedule