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自1958年陕西省创建等截面悬链线拱桥后,几年来经过各地的实践,一致认为有如下一些优点:1.在施工上因所需拱料规格较少,施工简便,从而节省管理费用,并大大缩短工期。2.在结构上,由于拱圈截面是常数,因此,拱端所承受的各种应力比变截面拱为小,而在拱端处的压应力却有所增加,因而对一些未曾考虑到的拉应力增强了安全储备,而且整个等截面拱各截面的弯矩值比变截面拱分布得也较为均匀。3.等截面拱虽比变截面拱要增加10～15%的圬工数量,但所增的圬工费用能从施工简化中得到补偿。4.等截面拱虽有拱端应力偏大的缺陷,但可根据
Since 1958, Shaanxi Province has created a cross-section catenary arch bridge, after several years of practice around, agreed that there are some advantages as follows: 1. In the construction due to the required less arch material specifications, the construction is simple, thus saving management costs, And greatly shorten the construction period. 2. Structurally, since the section of the arch is constant, the various stresses experienced at the arch end are smaller than those of the variable section arch, while the compressive stresses at the arch end increase, so that for some unforeseen Tensile stress enhanced the safety reserve, and the bending moment value of each cross section arch was more uniform than that of the variable section arch. 3. The equivalent cross-section arches than the variable cross-section arches to increase the number of 10 to 15% of the number of workers, but the increase in labor costs can be compensated from the construction of simplified. 4, such as cross-section arched end of the arch stress is too large, but according to