| Nowadays,although there is not any completed project of submerged floating tunnel in the world,in view of its advantages in crossing the deep water,and it also begin to be studied widely.But,it is a pity that we rarely the relevant research about dynamic tension of the submerged floating tunnel are seen rarely by us.While,the destruction led by impact tension of tether to the submerged floating tunnel is very serious.So,this paper focus on research on tension of tether,wishing its result can provide useful value for the follow-up study of submerged floating tunnel.This paper started with the static calculation,dynamic calculation of submerged floating tunnel,and the tension time diagram of submerged floating tunnel.The main contents are as follows.(1)The local and national research status of submerged floating tunnel in two aspects of theoretical overview and structural analysis are sketched.(2)The four arrangement methods of anchor rope and the basic theory of stress wave are described.(3)For the static configuration diagram and dynamic configuration diagram of tether,it also had been analyzed and gotten the corresponding result by us,and we use the Hamilton principle and Energy conservation method analysis the work done by tether.(4)Based on the summary of the work done by tether,the nonlinear equation of motion of tether is deduced.Meantime,the external stress is considered.Then the equation method is simplified by the Galerkin method.At last,we used the MATLAB to solve this equation and depicted the motion response curve of tether.(5)The end harmonic excitation and strain propagation is analyzed.Then,the three state including slack,slack-taut,taut are calculated and analyzed.Among them,the tethertube body parameter resonance conditions which may be occurred is preliminarily discussed.(6)The impact on dynamic cable tension is discussed,including location of anchor rope,excitation frequency,excitation amplitude,the length of tether and its elastic modulus. |
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