几座自锚式悬索桥主缆锚固区设计

主缆锚固区是自锚式悬索桥的关键传力区域,主缆锚固区结构型式的合理选择和设计是自锚式悬索桥最为关键的技术之一。以几座自锚式悬索桥主缆锚固区设计为工程实例,对混凝土结构锚固、钢结构锚固及钢混凝土组合结构锚固3种主缆锚固区常见的锚固方式进行结构设计和计算的对比分析,得出3种锚固方式的优缺点及合理选择主缆锚固区结构型式的条件。

Design of Main Cable Anchorage Zones for Several Self-anchored Suspension Bridges

The main cable anchorage zone is a key force transfer zone of self-anchored suspension bridge.The reasonable selection and design of the structural form of the main cable anchorage zone are one of the most critical technologies for the self-anchored suspension bridge.Taking the design of the main cable anchorage zones for several self-anchored suspension bridges as the engineering example,the structural designs and calculations of the common anchoring methods of concrete structural anchorage,steel structural anchorage and steel-concrete composite structural anchorage for three main cable anchorage zones are compared and analyzed.The advantages and disadvantages of three anchorage methods are obtained,and the conditions of structural forms for the main cable anchorage zone are reasonably selected.