本文介绍了试验的情况，分析了模型肋拱面内受力全过程的性能，并初步探讨了其面内极限承载力的简化计算方法。
The mechanic behavior of CFST rib arch under in-plane load is studied. The simplified methods to calculate the structure's in-plane ultimate strength are discussed as well.
当此类拱桥出现面内稳定控制设计时，横向风载的作用对拱桥的稳定系数和极限承载力影响较小。
When the in-plane stability of such arch is in control of the bridge design, Transverse wind load has a little influence on the stability factor and ultimate load carrying capacity.
通过两个大比例模型试验，研究了单拱面预应力混凝土系杆拱桥面内、面外稳定极限承载力及其影响因素。
Through two great model tests, this paper investigates the ultimate bearing capacity and its influence factor of the inside and outside face of prestressed concrete tied arch bridge with single arch.
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