下层悬挂纵移开启桥设计关键技术

Key Technologies for Design of Lower Suspended Longitudinal-moving Openable Bridge

摘要:

宁波市梅山春晓大桥作为连接梅山岛与北仑区的大型跨海桥梁，在设计上大胆创新，采用人车上下分离的布局，同时首创了下层纵移开启的模式，是国内外首座下层纵移开启式桥梁，其中涉及了一系列设计关键技术。这些技术旨在精准匹配土建结构与开启机械系统的精度需求，从而能够确保下层桥顺利实现纵移开启。该桥的创新设计，成功打破了传统模式的束缚，有效解决了桥上交通与大型船舶同时通行时可能产生的冲突问题，为桥梁工程的发展提供了新的思路与范例。

Abstract:

The Meishan Chunxiao Bridge in Ningbo is a large-scale cross-sea bridge connecting Meishan Island and Beilun District. Its design features bold innovations, adopting a vertically separated layout for pedestrians and vehicles while pioneering a lower-level longitudinal-moving opening mode, which is the first lower-level longitudinal-moving openable bridge at home and abroad, and involves a series of key design technologies. These technologies aim at precisely matching the accuracy requirements between the civil engineering structure and the opening mechanical system, thereby ensuring the smooth longitudinal movement and opening of the lower bridge deck. The innovation design of this bridge successfully breaks the constraints of traditional models, and effectively resolves the possible conflicts that may arise when traffic on the bridge passes simultaneously with large ships, which provides the new ideas and exemplary solutions for the development of bridge engineering.