| PBL加劲型矩形钢管混凝土组合桁梁桥设计 |
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| 引用本文： | 刘彬,刘永健,杨岳华,曹明明,王康宁.PBL加劲型矩形钢管混凝土组合桁梁桥设计[J].桥梁建设,2019(5):97-102. |
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| 作者姓名： | 刘彬 刘永健 杨岳华 曹明明 王康宁 |
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| 作者单位： | 长安大学公路学院;浙江省交通集团杭州板块建设指挥部;中铁大桥科学研究院有限公司 |
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| 基金项目： | 国家自然科学基金项目（51778058,51378068）;中央高校基本科研业务费专项资金资助项目（300102219310）~~ |
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| 摘 要： | 高速公路跨线桥黄延桥为(24+40+24) m连续刚构体系PBL 加劲型矩形钢管混凝土组合桁梁桥。该桥主梁采用矩形钢管桁架和混凝土行车道板构成的组合桁梁;桥墩采用Y形双肢矩形钢管混凝土树状桥墩,下设菱形承台+钻孔灌注桩基础。在负弯矩区下弦杆和Y形桥墩的矩形钢管内设置PBL纵肋并灌注混凝土,形成PBL加劲型矩形钢管混凝土断面,以提高杆件承载力、改善受压钢管局部屈曲性能。为提高该桥PBL加劲型矩形钢管混凝土节点的承载力、改善节点的失效模式,采取主管内灌注混凝土和支管与主管同宽两项优化措施。混凝土桥面板通过上弦闭口PBL开孔预埋钢板连接件与主桁相连。桥墩通过纵、横向呈方格网络集中布置的PBL开孔钢板与承台固结。
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| 关 键 词： | 组合桁梁桥 跨线桥 矩形钢管混凝土结构 PBL加劲肋 负弯矩区优化 节点优化 PBL混合连接技术 |
Design of PBL-Stiffened Steel Truss-Concrete Composite Girder Bridge with Truss Made of Rectangular Steel Tubes |
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| LIU Bin,LIU Yong-jian,YANG Yue-hua,CAO Ming-ming,WANG Kang-ning.Design of PBL-Stiffened Steel Truss-Concrete Composite Girder Bridge with Truss Made of Rectangular Steel Tubes[J].Bridge Construction,2019(5):97-102. |
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| Authors: | LIU Bin LIU Yong-jian YANG Yue-hua CAO Ming-ming WANG Kang-ning |
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| Institution: | (School of Highway, Chang′an University, Xi′an 710064, China;Construction Headquaters of Hangzhou Section of Zhejiang Transportation Group, Hangzhou 310012, China;China Railway Bridge Science Research Institute, Ltd., Wuhan 430034, China) |
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| Abstract: | LIU Bin;LIU Yong-jian;YANG Yue-hua;CAO Ming-ming;WANG Kang-ning(School of Highway, Chang′an University, Xi′an 710064, China;Construction Headquaters of Hangzhou Section of Zhejiang Transportation Group, Hangzhou 310012, China;China Railway Bridge Science Research Institute, Ltd., Wuhan 430034, China) |
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| Keywords: | composite truss girder bridge overpass rectangular concrete-filled steel structure PBL stiffening rib optimization of hogging moment region optimization of panel point PBL hybrid connecting technique |
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