下承式系杆拱桥以系杆承受水平推力，属于无推力的组合体系拱结构。

A through tied-arch bridge is a type of built-up arch structure, characterized by the horizontal thrust of arch end being balanced by its ties.

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通过一座下承式系杆拱桥的工程实例，应用该模型比较了三种不同的养护方案，验证了该模型的实用性和有效性。

The new model is used in a through tied arch bridge project, with a comparison of three maintenance proposals, and proves applicable and effective.

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通过对系杆拱桥作用在拱肋上的荷载性质进行了分析，采用能量法推导出无横撑下承式系杆拱桥侧倾稳定临界荷载的一般公式。

Using energy method, the general formula for calculation of lateral stability of through bowstring tied arch bridge without transverse beams given.

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