地铁高架区间异型桥墩设计

Design of Special-shaped Pier in Elevated Section of Metro

摘要:

介绍常见的异型桥墩形式，选取结构改造和受力较为复杂的弹弓型桥墩进行设计，提出该类桥墩的设计方法和注意事项。以深圳地铁6号线异型桥墩为研究背景，采用MIDAS CIVIL和FEA对其进行梁单元及实体单元分析，提出普通钢筋配置的参考方案，特别关注上层桥梁的联动位移和各交接点处的应力集中，对类似工程具有指导意义。

Abstract:

The common special-shaped pier forms are introduced. The structural reconstruction and the slingshot pier with the more complex force are selected to carry out the design. The design method and matters needing attention for this kind of pier are put forward. Taking the special-shaped piers in Shenzhen Metro Line 6 as the study background, the beam element and solid element are analyzed with Midas CIVIL and FEA. The reference scheme of common reinforcement arrangement is proposed. The special attention is paid to the linkage displacement of the upper bridge and the stress concentration at each joint, which has the guiding significance for similar projects.