2×75转体桥上跨国铁铁路T构设计  

Design of T-structure for Cross-border Railway on 2×75 Swivel Bridge

作　　者：吴珍瑞 WU Zhen-rui(China Railway Shanghai Design Institute Group Co.,Ltd.,Shanghai 200070,China)

机构地区：[1]中铁上海设计院集团有限公司,上海200070

出　　处：《价值工程》2024年第12期64-66,共3页Value Engineering

摘　　要：转体T构桥施工简单、工艺成熟,跨越能力强,具有对既有线运营影响小的优点,在中等跨度跨线桥桥型方案中,具有明显的优势。本文以某上跨国铁铁路高速立交桥采用的(75+75)m预应力混凝土T型钢构为研究对象,结合平面整幅转体法施工,在满足既有铁路建筑限界的同时,有效地减小了线上施工对铁路既有设备及运营的影响。本文详细介绍了转体桥上、下部结构构成形式及尺寸参数,其中转体桥关键部位转体系统的设计,对未来类似跨径级别的上跨铁路转体桥设计工作提供了有价值的参考。The swivel T-shaped bridge has the advantages of simple construction,mature technology,strong crossing ability,and minimal impact on the operation of existing lines.It has obvious advantages in the medium span overpass bridge type scheme.This article takes the(75+75)m prestressed concrete T-shaped steel structure used in a high-speed overpass of a certain multinational railway as the research object.Combined with the planar whole frame rotation method construction,it effectively reduces the impact of online construction on existing railway equipment and operation while meeting the limits of existing railway buildings.This article provides a detailed introduction to the composition and size parameters of the upper and lower structures of the swivel bridge.The design of the key part of the swivel system of the swivel bridge provides valuable reference for future design work of similar span level railway swivel bridges.

关 键 词：公路跨线桥 T形刚构 平面转体施工 设计 结构分析 

分 类 号：U445.4[建筑科学—桥梁与隧道工程]