| 银西高铁大跨连续刚构加劲钢桁组合结构设计 |
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| 作者单位： | ;1.中铁第一勘察设计院集团有限公司 |
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| 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。
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| 关 键 词： | 高速铁路 铁路桥 梁桁 组合结构 设计 |
Design of Composite Structure of Long-span Continuous Rigid Frame with Steel Truss on Yinchuan-Xi'an High-speed Railway |
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| Affiliation: | ,China Railway the First Survey and Design Institute Group Co. |
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| Abstract: | 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. |
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| Keywords: | High-speed railway Railway bridge Girder with truss Composite structure Design |
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