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通过总结国内外联接铰的类型、特点及其应用现状,重点介绍了厄瓜多尔国家联合大桥多跨长联预应力连续梁联接铰的设计特点,靠近跨中部位设置联接铰用于传递两联主梁活荷载产生的剪力和弯矩,约束两端主梁的竖向、横向相对变形及相对转动,释放主梁混凝土收缩徐变、体系温差及地震产生的纵向相对位移,解决了多跨长联预应力连续梁位移过大的难题。施工中采用钢管支架现浇、水箱预压等措施控制线形。
By summarizing the types, characteristics and application status of joint hinges at home and abroad, the design features of multi-span long-span prestressed continuous beam joint hinge of Ecuadorian National Bridge are introduced. Adjacent to the mid-section, Shear and bending moment caused by live load restrains the vertical and horizontal relative deformation and relative rotation of the main girder at both ends of the main girder, and releases the concrete shrinkage and creep of the main girder, the system temperature difference and the longitudinal relative displacement caused by the earthquake, Prestressed continuous beam displacement problem is too large. Construction using steel pipe bracket in situ, water tank pre-pressure control measures such as linear.