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悬跨
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  suspended span
     The results indicate that controlling the length of the free spanning is the key tocontrol the vibration of the suspended span.
     研究结果表明,控制悬跨振动的关键问题是控制悬跨的长度。
短句来源
     Firstly, the vibration differential equation of the pipeline is written when the load is applied. The finite element method model of the suspended span of the pipeline is built. Then, the modal analysis of the model is studied.
     建立了海底输油管线在外载荷作用下的振动微分方程,利用有限元方法建立海底悬跨管道模型,然后对其进行了模态分析,进行浪致振动分析,并进行海底管线海流引起的顺流向振动分析。
短句来源
  free span
     Nonlinear Dynamic Analysis on Free Span Submarine Pipelines Considering Fluid-Structure Interaction
     考虑流固耦合时的海底管道悬跨段非线性动力分析
短句来源
     The Dynamic Response of Free Span Submarine Pipeline Containing Flowing Fluid
     海底悬跨管道在内流影响下的动力响应研究
     In order to find the dynamic response of the free span, combining Matteo Luca Facchinetti's wake oscillator model with the differential equation of the free span to get the coupling equations between pipe and fluid, the finite element method combined with the simple iteration is used to solve the system of equations.
     为考察海底管道悬跨段的动力响应,将尾流振子模型与海底管道悬空段振动微分方程相结合,得到管道与流体的耦合振动方程,用有限元法及迭代法进行求解,得到管道涡激振动响应。
短句来源
     A differential equation is derived to describe the motion of a free span submarine pipeline,with the flow of the fluid inside the pipeline,the axial force and pressure on it taken into consideration.
     以海底悬跨段输液管道为研究对象,考虑管内流体流动及管道轴向力和压强的作用,对其进行受力分析,导出管道振动微分方程。
短句来源
     The paper is to research the effect of internal flow on the dynamic response of free span submarine pipeline relating with engineering practice, coupling of the mathematical models of internal flow and pipeline.
     本文结合工程实际情况,应用有限元数值模型的耦合计算探讨了内流对海底悬跨管道动力响应的影响。
  “悬跨”译为未确定词的双语例句
     Nonlinear free vibration of suspended pipelines
     悬跨段海洋管道非线性自由振动分析
短句来源
     Allowable span length of submarine pipeline considering damping
     考虑阻尼海底悬跨段管道的动力特性及允许悬空长度
短句来源
     Seismic response and vibration control of free spanning submarine pipelines
     海底悬跨管线的地震响应和振动控制
短句来源
     This paper studied the assessment method for fatigue life of subsea pipelinesaffected by current under the combined wave and current condition, and worked outthe calculating process of subsea pipeline fatigue life based on Miner linear damagecumulating theory and assessment model in DNV RP-F105.
     本文研究了在波流联合作用的海洋条件下,海底管线悬跨在流作用下的疲劳寿命评估方法,并根据 Miner 线性累计损伤理论和 DNV RP-F105 中的评估模型进行海底管线疲劳寿命的计算。
短句来源
     Nonlinear Dynamic Analysis of Submarine Pipelines Considering Fluid-Structure Interaction
     考虑流固耦合时的海底管道悬跨段非线性动力分析
短句来源
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  suspended span
Each interior span is comprised of two 102-meter cantilever spans simply supporting a 132-meter long suspended span.
      
This mechanism of prestressing the cables allows us to decrease the flexibility of a suspended span.
      
The maximum bending stress along the suspended span occurs in the sagbend or around the stinger.
      
The nonredundant bridges with fracture-critical members in the MDOT bridge inventory have cantilevered suspended span arrangements.
      
When they are used in suspended span configurations in nonredundant two-girder bridges, they are fracture critical.
      
  free span
The effects of varying axial velocity, tension, free span length, and tape thickness were investigated.
      
Free span corrections between J-tube bell mouth and seabed shall also be designed and supplied.
      
Free span corrections between J-tube bell mouth and seabed shall also be designed according to project specific design basis.
      
Similarly, air supported the Pointiac Silverdome has free span 235m and 15kg/m2 of own weight.
      
Two parallel arches with a free span of 45-m and an intermediate deck constitute the structural scheme.
      
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An analytical method on [1] is presented for finding the elastic deflection of pipelines laid with an articulated stinger. The suspended section and the section supported by the stinger are treated separately but simultaneously with the singular perturbation technique and by use of the condition of continuity at the joint between the two sections, an approximate solution of the second order for the deflection of the whole pipeline is obtained.

本文在文献[1]的基础上,进一步研究了管线用铰接式托架铺设时的大变形问题。文中对托架段和悬跨段同时采用奇异摄动法分别求解,然后利用两段交接处的连续条件成功获得了全条管线变形解的二阶近似式。

With the rapid development of the Offshore Oil Industry, submarine oil/gas pipelines have been widely used. Under the complexsubmarine environmental conditions,the dynamic characteristics of pipeline show some new features due to the existence of internal and external fluids. The paper is intended to investigate the vortex-induced vibration of suspended pipeline in the submarine steady flow. Especially, the effects of the flow inside the pipeline are taken into account. Its influences on the amplitude of pipeline...

With the rapid development of the Offshore Oil Industry, submarine oil/gas pipelines have been widely used. Under the complexsubmarine environmental conditions,the dynamic characteristics of pipeline show some new features due to the existence of internal and external fluids. The paper is intended to investigate the vortex-induced vibration of suspended pipeline in the submarine steady flow. Especially, the effects of the flow inside the pipeline are taken into account. Its influences on the amplitude of pipeline response,and then on the fatigue life, are given in terms of internal fluid velocity.

在复杂的海洋环境条件下,管道的动力学特性受到内外部流体的作用而呈现出新的特点。本文通过对处在海底平稳流动作用下的悬跨管道的涡致振动进行分析,特别地考虑到管道内部流动的作用,给出了内流速度对管道响应幅度的影响,进而指出其对管道疲劳的意义。

Based on brief analyzing present conditions of

在简要分析海底石油管道铺设现状的基础上,综合研究“S”型铺管与“J”型铺管的着底管段与悬跨管段的受力及变形。采用Pasternak双参数模型分析着底管段海底基础与管道的相互作用,用加权残值法求解考虑波浪荷载作用下悬跨管段的高阶非线性微分方程。分别利用“S”型铺管与“J”型铺管时,托管架与管道相互作用条件及着底管段与悬跨管段的连续条件,获得了“S”型与“J”型铺管时管道的变形、内力及强度计算的近似解,并编制了相应的设计软件。算例分析了在不同施工参数与托管架结构参数组合下管道的相当应力沿管长的变化曲线,可为“S”型与“J”型铺管设计提供参考。

 
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