Aiming at an innovative engineering structure span-ning the bay,the submerged floating tunnel (SFT),the three-dimensional solid model of SFT was established by using ABAQUS finite element analysis software,and taking the SFT design scheme of Funkawan Bay in Japan as the object. The lateral deformation and torsional motion response characteris-tics of the SFT were analyzed under the conditions of single cable break and multiple cables continuous break,and the in-fluence of Weight-Buoyancy Ratio (WBR) on cable break re-sponse was discussed through parameter sensitivity analysis. The results show that the maximum torsional angle response and vertical displacement response of two consecutive anchor cable failures at the mid span increase by nearly three times and double respectively compared to a single anchor cable failure. Increasing the safety factor of the cable is significantly important to avoid continuous cable-breaking. In addition,the SFT equivalent model for dynamic responses analysis is pro-posed,which can accurately reflect the dynamic characteris-tics of the whole tunnel and the deformation characteristics un-der various loads.
submerged floating tunnel (SFT )cable-breakingresponse characteristicsequivalent model of fishbone beam
万方数据
维普
