摘要
银西高铁漠谷河2号桥主桥采用(97+2×180+97)m连续刚构加桁组合结构,是目前国内同类型桥梁的最大跨度。对该桥的设计方法进行详细介绍,对主桥的方案选择及控制因素进行分析,对梁桁组合机构的加劲钢桁桁长及桁高的选择、连接节点的设计、徐变变形其他控制措施和梁桁温差引起的桥面竖向位移等设计难点进行了研究,为该结构在高速铁路桥梁中的应用奠定了基础。
The main bridge of Mogu River No. 2 bridge is （97 ＋2 × 180 ＋97） m composite structure of continuous rigid frame with truss on Yinchuan-Xi＇an high-speed railway, and it has the largest span of its kind in China. In this paper, the design method of this bridge is described in detail, the scheme selection and controlling factors of the main bridge are analyzed, and the difficulties in the selection of length and height of the reinforced steel truss of the composite girder, the design of connection node, the creep deformation control and the vertical deck displacement due to temperature difference between girder and truss are discussed, which lays the foundation for the application of the structure in bridges of high-speed railway.
作者
罗红枝
LUO Hong-zhi(China Railway the First Survey and Design Institute Group Co. , Xi＇an 710043, China)
出处
《铁道标准设计》
北大核心
2017年第11期37-41,共5页
Railway Standard Design
关键词
高速铁路
铁路桥
梁桁
组合结构
设计
High-speed railway
Railway bridge
Girder with truss
Composite structure
Design
