熊治华,张爱军,刘玉擎.大跨径槽桥合建结构体系与荷载效应研究[J].中国水利水电科学研究院学报,2021,19(4):390-399
大跨径槽桥合建结构体系与荷载效应研究
Research on structural type and load effects of large span aqueduct-bridge co-built structure
投稿时间:2020-06-10  
DOI:10.13244/j.cnki.jiwhr.20200078
中文关键词:  渡槽  拱桥  预应力刚构桥  合建  斜拉桥
英文关键词:aqueduct  arch bridge  prestressed concrete rigid frame bridge  co-built  cable-stayed bridge
基金项目:国家自然科学基金(51908422);“十三五”国家重点研发计划资助项目(2017YFC0405103);陕西省重点研发计划(2017ZDXM-SF-074);西北农林科技大学青年人才项目(Z111022001)
作者单位E-mail
熊治华 西北农林科技大学 水利与建筑工程学院, 陕西 杨凌 712100  
张爱军 西北农林科技大学 水利与建筑工程学院, 陕西 杨凌 712100 Zaj@nwsuaf.edu.cn 
刘玉擎 同济大学 土木工程学院, 上海 200092  
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中文摘要:
      为了高效利用国家基础设施资源,提出了大跨径槽桥合建的结构体系并分析了其荷载效应。对水重、交通活载在主跨100~300 m范围内的槽桥合建结构响应进行了分析,并针对预应力混凝土刚构、上承式拱结构、斜拉索结构三种结构体系开展了研究。结果表明:在混凝土刚构槽桥合建中,恒载效应为上部箱梁弯矩控制因素,当主墩相对刚度变化较大时,温度效应控制了主墩结构设计;在上承式钢管混凝土拱槽桥合建中,拱脚处,水重和交通活载的总效应超过恒载效应,合理选择拱轴线对于主拱肋受力至关重要;采用桁梁的斜拉管桥合建,上层为交通桥面层,下层可设置大管径输水管,结构刚度大,可满足输水与交通运输两种功能同时运行;提出的输水结构效率系数可用于槽桥合建结构概念设计。
英文摘要:
      In order to take full advantages of infrastructure, aqueduct-bridge co-built structure was proposed and its load action was analyzed. The weight of water and live load of the traffic were involved in the structural analysis in the span range of 100~300 m. Prestressed concrete rigid frame bridge,deck arch bridge and cable-stayed bridge were studied as aqueduct-bridge co-built structures respectively. It is found that:the dead weight of prestressed concrete rigid frame aqueduct-bridge co-built structure is the governing factor of bending moment of the superstructure; when the relative stiffness between the main piers varies too much, the temperature action dominates the pier's design; in terms of deck arch, the combination of water's weight and live load is larger than the structure's dead weight in the foot of arch; with regard to the pipe cable-stayed bridge, steel truss provides the traffic deck in the upper plane of truss and the pipe deck in the bottom plane; both the water transportation and traffic functions are realized due to the large stiffness of truss.
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