多跨简支梁桥调坡降落关键技术

Key Technology of Slope Adjustment and Landing for Multi Span Simple Supported Beam Bridge

结合上海市某高架桥降落改造工程实例,介绍了采用交替降落控制系统、格构式支撑体系和被动加主动组合式限位体系进行桥梁整体降落的新工艺,并详细阐述了针对以往桥梁调坡技术的改进之处。工程实践证明,改进后的多跨简支梁桥调坡降落关键技术较为先进,且安全可靠,可为类似项目提供借鉴。

Combined with an example of a viaduct landing reconstruction project in Shanghai,this paper introduces the new technology of the entire bridge landing by using alternate landing control system,lattice support system and passive-active combined limit system,and elaborates the improvement of the previous bridge slope adjustment technology.The engineering practice shows that the key technology of the improved multi span simple supported beam bridge is more advanced,safe and reliable,which can provide a reference for similar projects.