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首页> 外文期刊>Journal of structural engineering >Tension Identification of Suspenders with Supplemental Dampers for Through and Half-Through Arch Bridges under Construction
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Tension Identification of Suspenders with Supplemental Dampers for Through and Half-Through Arch Bridges under Construction

机译：正在施工的半贯通拱桥的带有附加阻尼器的吊杆张力识别

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摘要

This paper focuses on the identification of tension in suspenders equipped with supplemental dampers in through and half-through arch bridges. Although the differential equation governing the transverse vibration of beams can be modified to include the restraining actions and energy dissipative features of the damper, ensuing solutions relating suspender tension to suspender frequency can only be expressed implicitly, rendering the approach impractical in real bridge applications. This paper develops a simpler, practical identification method which takes into consideration the influence of the damper. Numerical results relating suspender frequency to suspender tension and damper lateral stiffness can be visualized as a surface plot, which in essence is a signature of the suspender system. Feasibility of the tension identification method is demonstrated using a recently completed 180-m-span bowstring arch bridge. Results are promising because suspender tensions are identified with acceptable accuracy. It is further contended that the proposed method is effective in identifying the tension in suspenders equipped with supplemental dampers at all stages of construction and the process can be readily extended to tension identification during the service life of bridges.
机译：本文着重于在贯通和半贯通拱桥中配备辅助阻尼器的吊架中张力的识别。尽管可以修改控制梁横向振动的微分方程，使其包括阻尼器的约束作用和能量耗散特征，但随后的解决方案只能以隐式方式表达，将悬架张力与悬架频率相关联，这使得该方法在实际桥梁应用中不切实际。本文提出了一种考虑阻尼器影响的简单实用的识别方法。可以将悬架频率与悬架张力和减振器横向刚度相关的数值结果可视化为表面图，这实质上是悬架系统的标志。使用最近完成的180米跨度弓弦拱桥证明了张力识别方法的可行性。结果是有希望的，因为可以以可接受的精度确定悬挂器的张力。进一步认为，所提出的方法在构造的所有阶段都可有效地识别配备有附加减震器的悬挂装置中的张力，并且该过程可以很容易地扩展到桥梁使用寿命期间的张力识别。

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