Abstract The Yavuz Sultan Selim Bridge is a high-rigidity suspension bridge, combining stiffening stay cables and suspension cables. It features a 1408 m central span, and supports a railway and a motorway with a 58.5 m wide deck between stiffening stay cable anchorages. The design of the stiffening stay cables for this bridge required several developments to cater for the exceptional needs of the longest and heaviest stay cable in the world. The usual strand grade would not meet the project forces and 1960 MPa strands had to be qualified, for all the anchorage units within the range, up to 151 strands. Such qualification is, however, only the tip of the iceberg as many other tailor-made components had to be developed. Heavy-duty deviators needed to be proof tested for fatigue and wear and were a vitally important part of the design. Long-stroke hydraulic pistons had to be qualified for performance, long-term resistance to corrosion and ageing.

中文翻译：

---

博斯普鲁斯海峡第三大桥：大跨度电缆技术发展和混合桥梁的里程碑

摘要 Yavuz Sultan Selim 桥是高刚度悬索桥，结合了加劲斜拉索和悬索。它具有 1408 m 的中心跨度，支持铁路和高速公路，在加强斜拉索锚固点之间有 58.5 m 宽的甲板。这座桥的加劲斜拉索的设计需要进行多项开发，以满足世界上最长和最重的斜拉索的特殊需求。通常的钢绞线等级无法满足项目力，对于该范围内的所有锚固单元，1960 兆帕钢绞线必须合格，最多 151 根钢绞线。然而，这种资格只是冰山一角，因为必须开发许多其他定制组件。重型偏转器需要进行疲劳和磨损验证测试，并且是设计中至关重要的部分。