| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a calculation method for collision load of diverse tsunami driftage.SOLUTION: A calculation method for collision load of tsunami driftage assumes that F is the collision load of tsunami driftage, Fis the collision force at a time of driftage collision, and Fis the (resistance) force that driftage receives from tsunami, and the collision load of tsunami driftage F at a time t satisfies the following three equations: (1) F=2(F+F)t/Δt(0<t≤Δt/2), (2) F=(-2F)t/Δt+(2F+F)(Δt/2<t≤Δt), and (3) F=F(Δt<t), where F is the collision load of tsunami driftage (kN), F=2 mV/Δt(kN), F=ρCuA/2(kN),Δt is the collision time (sec) calculated by numeric analysis based on driftage and structure models, m is the mass of driftage (t), V is the collision speed of driftage (m/sec), u is the tsunami speed (m/sec), Ais the area of driftage that receives tsunami pressure (m),ρis the tsunami density (t/m), and Cis the resistance coefficient.</p> |
