预应力混凝土连续大箱梁桥设计

以某实际工程项目的预应力混凝土连续大箱梁桥结构为背景，依据相关技术标准及工程条件，介绍大箱梁的结构构造、纵向设计以及局部分析要点，对预应力混凝土连续大箱梁桥设计进行研究，对设计过程中箱梁的尺寸、钢束布置及纵向计算进行总结，并对横梁、桥面板计算提出设计细节。在设计阶段考虑了横向倾覆的稳定性，保证了桥梁结构的安全性和适用性，以供类似工程参考借鉴。

Design of Pre-stressed Concrete Continuous Big-box Beam Bridge

Based on the structure of pre-stressed concrete continuous big-box beam bridge in a practical engineering project, and according to related technical standards and engineering conditions, the structural construction, longitudinal design and local analytical essentials of big-box beam are introduced. The design of pre-stressed concrete continuous big-box beam bridge is studied. The size of box beam, layout of steel cable and longitudinal calculation are summarized. The design and calculation details for the crossbeam and deck slab are proposed. The stability of lateral overturning is considered in the design period to guarantee the safety and applicability of bridge structure, which can be referred for the similar projects.