聊城跨徒骇河莲花型单塔大跨斜拉桥结构设计  

Structural Design of Lotus-shaped Single-pylon Long-span Cable-stayed Bridge across Tuhai River in Liaocheng City

作　　者：林国伟[1] 董俊 宋晓东[3] LIN Guowei;DONG Jun;SONG Xiaodong

机构地区：[1]济南城建集团有限公司,山东济南250000 [2]四川建筑职业技术学院,四川德阳618000 [3]中铁二院工程集团有限责任公司,四川成都610031

出　　处：《城市道桥与防洪》2023年第5期60-64,M0008,M0009,共7页Urban Roads Bridges & Flood Control

基　　金：山东省住房和城乡建设厅科技计划(2019-k4-1)。

摘　　要：聊城兴华路跨徒骇河桥采用100 m+100 m独塔钢箱梁斜拉桥,该桥主塔整体造型采用莲花状结构,由2个主塔柱和1个副塔柱组成,主、副塔柱之间采用空间索面拉索相连,桥塔中轴线为椭圆,主塔和副塔分别高52.211 m、47.65 m,主、副塔柱轴线夹角30°;主梁采用钢箱梁,双箱单室截面,梁宽40 m,中线处梁高3 m;斜拉索为扇形布置的空间双索面,采用标准强度1770 MPa的平行钢丝斜拉索,全桥共72根斜拉索,斜拉索梁端锚固采用钢锚箱,钢锚箱焊接在主梁钢箱梁边箱室外侧;塔座、承台及桩基础采用混凝土结构,大桥共设置34根φ1.8 m的钻孔灌注桩,桩长70 m。莲花造型独塔斜拉桥的造型优美,创意独特,在满足结构各项受力性能要求的同时,很好地体现了聊城莲湖水利风景区的特色文化,使景区成为建筑艺术和谐交融的典范。Tuhai River Bridge in Xinghua Road of Liaocheng is a 100 m+100 m single-pylon steel box girder cable-stayed bridge.The main pylon of this bridge is a lotus-shaped structure for the overall modeling,which is composed of two main pylon columns and one secondary pylon column.The main pylon column is connected with the secondary pylon column by the spatial plane stayed cables.The central axis of the bridge pylon is elliptical.The main and secondary pylons are 52.21 m and 47.65 m high respectively.The axis angle of the main pylon and the secondary pylon is 300.The main girder is the steel box girder with double-box single-chamber section.The girder is 40 m wide.The girder height at the center line is 3 m.The stayed cable is a fan-shaped spatial double cable plane,which is the parallel steel wire stayed cable with the standard strength of 1770 MPa.There are 72 stayed cables in the whole bridge.The steel anchor box is used for anchoring the end of cable girder.The steel anchor box is welded to the outside of the side box of the steel box girder of the main girder.The pylon,base slab and pile foundations are the concrete structures.There are 34φ1.8-m cast-in-place piles for the whole bridge.Each pile is 70 m high.The lotus-shaped single-pylon cable-stayed bridge is beautiful in shape and unique in creativity.At the same time to meet the requirements of various mechanical properties of the structure,it well reflects the characteristic culture of the water conservancy scenic spot of Lianhu Lake in Liaocheng,which makes the scenic spot a model of harmonious integration of architectural art.

关 键 词：独塔斜拉桥 莲花状结构 主梁 空间拉索 钢桥塔 

分 类 号：U448.27[建筑科学—桥梁与隧道工程] U442.5[交通运输工程—道路与铁道工程]