月亮岛

丹东月亮岛大桥是宽跨比为1/22.44的下承式钢管混凝土系杆拱桥，采用单片桁架式X形拱肋，利用桥面板内张拉钢铰线作为拱的系杆。

Dandong Moon Island Bridge is a through concrete-filled steel tubular ( CFST ) X type tie arch bridge with ratio of width of deck to span 1 / 22.44.The section of the arch ribs adopts monolithic truss type , and the tie bar adopts the deck of the bridge .

从各河段来看，昭山土壤和湘江一桥底泥重金属含量均较高，呈现几种重金属复合污染特征，月亮岛的土壤和底泥重金属含量较低。

According to all kinds of section , the heavy metal content in Zhao mountain in soil and in Xiangjiang bridge in sediment were higher , it presents several combined pollution character of heavy metals in soil and sediment , heavy metal content of moon island is lower .

丹东月亮岛大桥是一座宽跨比较小（1/22.4）的钢管混凝土X型系杆拱桥，其稳定性是该桥施工过程中的关键问题之一。

The main span of the Moon Ireland Bridge in Dandong City is X-type arch bridge with small ratio ( 1 / 22.4 ) of width of deck to span . So its stability is the critical problems in design .