Abstract
Large jacket-type structures are employed in the construction of the forth runway, Tokyo International Airport (Haneda). The runway is located at the mouth of Tama River flowing into the Tokyo Bay and the jackets are employed in the one -third part of runway so that the flood from the river may not be disturbed by the runway. Meanwhile many timbers may be floated from the upstream in the flood and they may cause the collision on a pier composing the jacket structures. This paper describes at the first an experiment for the probability of collision by the drifting timber in a basin with the scale of 1/25. The horizontal motion of five model timbers is analyzed using the 3-D video camera tracker. Secondary an experiment for the collision force measurement is carried out in a channel with the scale of 1/10. The model test result shows that the high risk of collision by the drifting timber exists. A calculation formula of collision force is proposed.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
