单叶双曲面独柱塔双幅四索面斜拉桥探讨  

Design on Double Separated Deck and Four-cable Stayed Bridge with Univalent Hyperboloid Single Column Tower

作　　者：沙振方 秦韬睿 Sha Zhenfang;Qin Taorui(Zhangjiagang Free Trade Zone Jingang Construction Engineering Quality Inspection Co.,Ltd.,Suzhou 215633,China;College of Civil Engineering,Southeast University,Nanjng 211189,China)

机构地区：[1]张家港保税区金港建设工程质量检测有限公司,苏州215633 [2]东南大学土木工程学院,南京211189

出　　处：《特种结构》2022年第2期62-66,共5页Special Structures

基　　金：江苏省自然科学基金(BK2012755)。

摘　　要：针对城市宽幅斜拉桥,提出单叶双曲面独柱桥塔双幅四索面斜拉桥。以双幅分离式钢箱梁桥面替代宽幅钢箱梁桥面,单叶双曲面独柱桥塔替代双肢柱桥塔,四索面斜拉桥替代双索面斜拉桥。单叶双曲面独柱塔桥塔底厚实,可保证独柱桥塔结构承载力;桥塔腰部细小,司机视野开阔;较宽的桥塔顶部,可方便斜拉索分散锚固。结合200m+420m+200m单叶双曲面独柱塔双幅四索面斜拉桥,进行工程参数设计,建立Midas有限元分析模型,开展静力分析和动力模态分析研究,验证单叶双曲面独柱塔的双幅四索面斜拉桥的结构合理性。Aiming at the urban wide deck cable-stayed bridge,a double separated deck and four-cablestayed bridge with univalent hyperboloid single column bridge tower was proposed.The bridge deck with double separated steel box girder replaces the bridge deck wide steel box girder,the univalent hyperboloid single column bridge tower replaces the double column bridge tower,and the four-cable-stayed bridge replaces the double cable-stayed bridge.The univalent hyperboloid single column tower bridge has a thick bottom,which can ensure the bearing capacity of the single column tower structure.The waist of the bridge tower is small and the driver’s vision is wide.The wider top of the bridge tower can facilitate the scattered anchoring of stay cables.Combined with the 200 m+420 m+200 m double separated deck and four-cable-stayed bridge with the univalent hyperboloid single column tower,the engineering parameters were designed,the Midas finite element analysis model was established,the static analysis and dynamic modal analysis were carried out,and the structural rationality of double separated deck and four-cable stayed bridge with the univalent hyperboloid single column tower was verified.

关 键 词：四索面斜拉桥 单叶双曲面独柱桥塔 双幅分离式钢箱梁桥面 城市宽幅斜拉桥 景观桥梁 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]