对接型混合结构梁桥等效跨径计算方法OA
Calculation Method for Equivalent Span of Docked Hybrid Girder Bridges
借鉴传统中跨混合梁的等效跨径法,对等截面和变截面的对接型混合梁构件进行建模、计算和比对,提出了对接型混合梁跨径增大系数的简化计算公式.经工程实践验证,该公式简明清晰,揭示了对接型混合梁跨径增大系数仅与混合比和线荷载比相关的规律,可用于指导对接型混合结构梁桥的混合比设计.
Referring to the equivalent span method for conventional mid-span hybrid girders,models of butt-jointed hybrid girders with uniform and variable cross-sections were established,analyzed,and compared.Based on these analyses,a simplified calculation formula for the equivalent span increase factor of docked hybrid girders was proposed.Engineering applications verify that the proposed formula is concise and explicit,revealing that the equivalent span increase factor of butt-jointed hybrid girders is governed only by the mixing ratio and the line load ratio.The proposed formula can therefore be used to guide the design of the mixing ratio for butt-jointed hybrid girder bridges.
上官兵;苏庆田;林毅腾;汤虎
同济大学 土木工程学院,上海 200092||广东冶建施工图审查中心有限公司,广东 广州 510062同济大学 土木工程学院,上海 200092同济大学 土木工程学院,上海 200092上海市政工程设计研究院(集团)有限公司,上海 200092
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对接型混合梁等效跨径法等效跨径等效跨径增大系数混合比设计
docked hybrid girderequivalent span methodequivalent spanequivalent span increase factormixing ratio design
《同济大学学报（自然科学版）》 2026 (9)
1304-1313,10
上海市东方英才计划青年项目(QNKJ2025024)广东省住房和城乡建设厅科技创新项目(20250226K0007)
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