| 高速铁路连续刚构加劲钢桁组合结构桥梁设计研究 |
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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： | 以银西高铁漠谷河2号特大桥(97+2×180+97)m连续刚构加桁组合结构为工程背景,计算不同桁长及桁高对主梁变形的影响,分析梁桁连接方式以及钢桁的加劲效果,提出控制主梁徐变变形的有效措施,解决大跨度连续刚构加劲钢桁组合机构桥梁设计中的关键问题,为该结构的发展提供借鉴和参考。
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| 关 键 词： | 高速铁路 加劲钢桁梁 连续刚构桥 徐变变形 组合结构 |
On the Design of Composite Structure Bridge of Continuous Rigid Frame with Steel Truss on High-speed Railway |
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| Institution: | ,China Railway First Survey and Design Institute Group Co.,Ltd. |
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| Abstract: | Based on the main bridge with a(97+2×180+97) metres' composite structure of continuous rigid frame with steel truss of Yinchuan-Xi'an high-speed railway No.2 bridge on the Mogu River,this paper calculates the influences of different length and height of truss on the main girder's deformation,analyses the connection mode between girder and truss and the stiffening effects of steel truss,proposes effective control measures against creep deformation,and solves associated key problems.All of these may serve future development of such composite structure. |
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| Keywords: | High speed railway Stiffening steel truss Continuous rigid frame Creep deformation Composite structure |
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