求翻译：拱式梁的优点：跨越能力较大，与钢桥及钢筋混凝土梁桥相比，可以节省大量的钢筋和混凝土，能耐久且 养护和维修费用较少，外形美观且结构简单，有利于广泛使用。 缺点：由于它是推力结构，对地基要求较高。对多孔连续拱桥，为防止一孔破坏而影响全桥要采用特殊措施或推力墩以承受不平衡的推力，增加了工程的造价，在平原区修拱桥，由于建筑高度大，使两头的接线工程和桥梁纵坡量增大，对行车极为不利。是什么意思？

The advantages of the arch beam: large spanning capacity, compared with the steel bridge and reinforced concrete girder bridge, you can save a lot of steel and concrete, durable and maintenance and maintenance costs less, beautiful appearance, simple structure and is conducive to widespread use of .

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Arch bound Liang's merit: Spanning ability is big, compares with the steel bridge and the reinforced concrete beam bridge, may save the massive steel bars and the concrete, can durable also the maintenance and the maintenance cost are few, t

Advantage of arch-girder across large, compared with steel reinforced concrete beam bridge and bridge, you can save a lot of steel and concrete, and less maintenance and repair costs for a long time, stylish and simple structure, conducive to widespread use. Disadvantage: because it was the thrust s