乌海黄河特大桥结构设计与施工

桥梁工程 > 2026年第卷第08期

DOI: 10.7672 / sgjs2026080069

乌海黄河特大桥结构设计与施工

作者：任亮¹,李恩良²,杜宝军²,宁灿程³,马熙伦⁴,黄清华⁵,张金龙⁵,杨西⁶

作者简介：

任亮,高级工程师,E⁃mail:2236214440@ qq. com

作者单位：

1. 蒙冀铁路有限责任公司,内蒙古呼和浩特 010000; 2. 中国铁路设计集团有限公司,天津 300308;3. 中国国家铁路集团有限公司,北京 100010; 4. 宁夏大学土木与水利工程学院,宁夏银川 750021;5. 中铁十局集团有限公司,山东济南 250010; 6. 中铁十八局集团有限公司,天津 300222

基金项目：

∗国家自然科学基金(52368025)

摘要：

包银高速铁路乌海黄河特大桥严格遵循防洪评价及通航论证的批复要求,主桥采用( 80+ 80+ 310+ 80+80)m 跨径布置的混合箱梁斜拉桥结构,创新性地采用“双向大位移支座+纵横向阻尼器+柔性防震落梁”三位一体的综合支撑约束体系. 桥塔采用具有良好抗震性能的花瓶形混凝土结构,包头侧塔高 114.5m,银川侧塔高 118m.全桥主梁总长 632.4m,采用钢⁃混凝土组合结构形式,两端各 121. 2m 采用混凝土箱梁以保证结构稳定性,中部390m 采用自重更小的钢箱梁,其单箱五室宝石型截面配合半敞开格室后板型钢混结合段的设计,有效优化了结构受力性能. 全桥布置 56 对呈扇形分布的平行钢丝斜拉索,其中塔端采用齿块锚和钢锚梁组合式锚固方案,梁端则采用预埋式锚拉板锚固方案. 分析计算结果表明,该桥在结构刚度、强度、轨道平顺性及风⁃车⁃桥耦合动力响应等方面均完全符合规范要求. 本项目的设计和研究在适应高烈度地震区的综合支撑约束体系、轻量化箱梁与钢混结合段构造、斜拉索锚固技术及钢箱梁施工工艺等方面取得了一系列创新性成果.

关键词：桥梁;斜拉桥;锚固;悬臂拼装;设计;施工技术

English：

Wuhai Yellow River Bridge of Baotou⁃Yinchuan High⁃speed Railway strictly follows theapproval requirements of flood control evaluation and navigation demonstration, the main bridge adoptsthe hybrid box girder cable⁃stayed bridge structure with span arrangement of (80+80+310+80+80) m,and innovatively adopts the “ bi⁃directional large⁃displacement bearing + longitudinal and transversaldampers + flexible anti⁃vibration drop beams” trinity comprehensive support restraining system, which isthe best choice to support and restrain the bridge. The bridge tower adopts vase⁃type concrete structurewith good seismic performance, the height of the tower on the Baotou side is 114. 5m, and the height ofthe tower on the Yinchuan side is 118m. The total length of the main girder is 632.4m, adopting the formof steel⁃concrete combination structure, the concrete box girder is used for 121.2m at each end to ensurethe stability of the structure, and the steel box girder of lower weight is used for the middle part of thebridge of 390m, and the jewel⁃type cross section of the single box and five chambers is combined with thedesign of the back plate of the half⁃open chamber. The design of the steel⁃concrete combined sectioneffectively optimizes the structural stress performance. The bridge is equipped with 56 pairs of fan⁃shaped parallel steel wire cable ties, of which the tower end adopts the combined anchoring scheme of tooth blockanchor and steel anchor beam, and the girder end adopts the pre⁃buried anchor plate anchoring scheme.The analysis and calculation results show that the bridge fully meets the specification requirements interms of structural stiffness, strength, track smoothness and wind⁃vehicle⁃bridge coupling dynamicresponse. Through the design and research of this project, a series of innovative results are achieved inthe comprehensive support restraint system adapted to high intensity seismic zone, lightweight box girderand steel⁃concrete combined section structure, cable⁃stayed cable anchorage technology and steel boxgirder construction process.

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桥梁工程 > 2026年 第卷 第08期