한국방재학회:학술대회논문집
- 한국방재학회 2007년도 정기총회 및 학술발표대회
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- Pages.140-143
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- 2007
반무한 연속고가교에 대한 점성경계 설정속도의 간편식
An Approximation Expression of Wave Velocity of Viscous Boundary for Infinitely tong Elevated Bridge
- 발행 : 2007.02.22
초록
A continuing elevated bridge is replaced with mass-spring system model, and a part of the bridge is cut out as an analytical area. A viscous boundary is installed at both ends, and dynamic analyses are carried out changing the wave velocity of the viscous boundary, The result is compared with a result of a very long model corresponding to the solution with infinite length. A wave velocity is chosen so that the good performance of a viscous boundary is exhibited. The parametric analyses are carried out changing the model of various structural properties, and an approximation expression is suggested to obtain the wave velocity easily for setting a viscous boundary.