AN ANALYSIS ON THE SEISMIC AND WINDINDUCED RESPONSE IN THE ROOF MACHING ROOM OF THE SHIP-LIFTER
The dam ship-lifter is an important hydraulic engineering construction to lift passing ships vertically,which is made up of a bottom cylindrical tower with great resist lateral stiffness and a roof machine room with superelevation and oversized span.As a result of the gigantic difference of mass and stiffness between them,severe whiplash effect on the roof is produced by seismic process.Besides,with its height,the roof is supposed to undertake greater wind load,causing noticeable wind vibration response.This paper proposes that with the dam ship-lifter as the engineering background ANSYS finite element software is applied to establish the finite element model for the ship-lifter structure,in order to analyze the dynamic characteristics of the ship-lifter.On that basis,Davenport spectrum is used to simulate the pulsation wind load time-histories of the structure which is brought to bear on the model to calculate the wind vibration response of the structure; the structural seismic response is calculated under EL-centro seismic waves and manual seismic waves; finally comparison and analysis is made between the two situations and the existing response difference is accounted for.The result indicates the relatively notable wind induced vibration response at the roof machine room and rather obvious seismic whiplash effect.The research in this paper provides a significant ground for the assessment of the structural anti-seismic and anti-wind safety performance as well as the further damping and seismic isolation study.
Ship-lifter roof machine room dynamic response analysis seismic whiplash effect
Guang Que Jianwei Tu
Hubei Key Laboratory of Roadway Bridge & Structure Engineering, Wuhan University of Technology, Wuhan 430070, P.R.China
国际会议
The Twelfth International Symposium on Structural Engineering (第十二届结构工程国际研讨会)
武汉
英文
1122-1128
2012-11-17（万方平台首次上网日期，不代表论文的发表时间）