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一、儿岛——坂出路线概况儿岛——坂出路线是由公路和铁路组成,位于海峡部分公路、铁路两用桥于岛间横渡濑户内海。自本州陆地一侧起,共有十一座大桥。在这些桥中,称为大桥的是吊桥,最大规模的桥是靠近四国的南备赞濑户大桥,该桥如图1所示,全长1723m,中间跨度是1100m。主塔的高度距海面194m,考虑能航行大型巨船为准,桥梁距海面高度为65m。与该桥邻接的大小相仿的是北备赞濑户大桥(中央跨度为990m),这两座桥的工程能否成功,是完成本路线的关键。两座桥的锚基和桥墩由北侧起命名为1A,2P、3P、4P、5P、6P、7A。其中记号A为锚
A, Kojima - Sakamoto Route Overview Kojima - Sakamoto route is composed of highways and railways, located in the Strait part of the road, railway dual-use bridge across the island between the Seto Inland Sea. From the land side of Honshu, a total of 11 bridges. Among these bridges, the bridge is called a suspension bridge. The largest bridge is the Nanbuzantao Seto Bridge near the four countries. The bridge, shown in Figure 1, has a total length of 1723m and a mid-span of 1100m. The height of the main tower is 194m from the sea, taking into account the large giant ship that can be navigated, the height of the bridge from the sea is 65m. Adjacent to the bridge is the size of the North Buchanan Seto Bridge (the central span of 990m), the success of these two bridges is the completion of this route. The anchors and piers of the two bridges are named 1A, 2P, 3P, 4P, 5P, 6P, 7A from the north. Where symbol A is anchor