| Title |
Dynamic Characteristic of Truss Type Lift Gate by Model Tests |
| Authors |
이성행(Lee, Seong Haeng) ; 신동욱(Shin, Dong Wook) ; 김경남(Kim, Kyoung Nam) ; 정경섭(Jung, Kyoung Sup) |
| DOI |
https://doi.org/10.12652/Ksce.2012.32.6A.337 |
| Keywords |
트러스형 리프트게이트;문비진동;진동진폭;개방고;고유진동수 truss type lift gate;gate vibration;amplitude of vibration;opening height;natural frequency |
| Abstract |
A model test is performed to investigate the dynamic behavior of truss type lift gate which is being constructed by the four major rivers project. The gate dimensioned 40 m in width, 9m in height is scaled with the ratio of 1:25 and is made of acryl panel and supplemented weight by lead in the concrete test flume dimensioned 1.2 m in width, 0.5 m in height and 30m in length. Firstly natural frequencies of the model gate are measured and compared with the numerical results for the calibration. The amplitudes of the vibration are measured under the different gate opening, upstream water level conditions. Also models with bottom angle $20^{\circ}$, $35^{\circ}$ and $50^{\circ}$ are tested and compared to find out a proper shape of bottom structure which minimizes the gate vibration. These test results presents a basic data for the guide manuals of gate management and a design method to reduce the gate vibration of truss type lift gate. |