Yanyan Sha, Jørgen Amdahl, Ole Øiseth

Department of Marine TechnologyCentre for Autonomous Marine Operations and Systems (AMOS)

Norwegian University of Science and Technology (NTNU)

• Kristiansand to Trondheim• 1100km• 8 fjord crossings• Travel time: 21 hours

Trondheim

Kristiansand

600 m

5 km

?• Long travel time• Fixed time schedule• Weather dependent

• Reduced travel time• 24/7• Weather independent• Scenery

FERRY Bridge

wide deep

Ground

wide deep

Fjord? ?

wide deep

Pontoon-supported floating bridge TLP suspension bridge Submerged floating tunnel

• Wave loads

• Wind loads

• Ship collision loads

• Ship collision with bridge substructures

• Ship collision with bridge superstructures

• Ship collision with bridge substructures

Ship collision with bridge substructures

Ship collision with bridge superstructures

Collisions energy, forceRisk analysis Structural design

0.122sP DWT V

P V KM

AASHTO

Eurocode

Ship bow collision:

Ship forecastle collision:

BH BH SP R P AASHTO

Forecastle

bow

Bulb

Deckhouse ?

Collision tests Numerical simulations

s bE E E

Bjørnafjorden

Cruise ship bow

Reinforced concrete pontoonBridge girder

Container ship

Structural deformation Pontoon response

Container Cruise Ice-strengthened

Plate

thickness

Impact

height

Stiffener

thickness

Steel

grade

1. Y. Sha and J. Amdahl (2018) Local and global responses of a floating bridge under ship collisions. Journal of Offshore Mechanics and Arctic Engineering (Under review). 2. Y. Sha, J. Amdahl, A. Aalberg, Z. Yu (2017). Numerical investigations of the dynamic response of a floating bridge under environmental loadings. Ships and Offshore Structures (Under review). 3. Z. Yu, J. Amdahl, Y. Sha. (2017). Large inelastic deformation resistance of stiffened panels subjected to lateral loading. Marine Structures (Under review). 4. C. Dørum, M. Storheim and Y. Sha. (2017 ) Multi-span suspension bridge on floating foundations- behaviour under ship impact. Proceedings of the 39th IABSE Symposium. Vancouver, Canada. 5. Y. Sha, J. Amdahl and C. Dørum. (2017) Dynamic responses of a floating bridge subjected to ship collision load on bridge girders. Procedia Engineering. 6. O. Moe, Y. Sha, J. Veie and J. Amdahl. (2017) Analysis of tether anchored floating suspension bridge subjected to large ship collisions. Procedia Engineering 7. Y. Sha, J. Amdahl. A. Aalberg and Z. Yu. (2017) Numerical investigation on dynamic response of a floating bridge under wind and wave loadings. Proceedings of the Second International Conference on

Ships and Offshore Structures. Shenzhen, China. 8. Y. Sha and J. Amdahl. (2017) Ship collision analysis of a floating bridge in Ferry-Free E39 project. 36th International Conference on Ocean, Offshore and Arctic Engineering. Trondheim, Norway. 9. Y. Sha and J. Amdahl. (2016 ) Design of Floating Bridge Girders against Accidental Ship Collision Loads. Proceedings of the 19th Congress of IABSE. Stockholm, Sweden. 110. Y. Sha and J. Amdahl. (2016 ) Design of Floating Bridge Pontoon subjected to Ship Collision. Proceedings of the 7th International Conference on Collision and Grounding of Ships. Ulsan, Korea.

Thank you!

Yanyan ShaPostdoctoral Fellow, NTNU

Email: yanyan.sha@ntnu.no