空间组合式链杆锚固体系人行悬索桥设计  

Design of Pedestrian Suspension Bridge with Spatially Combined Chain Link Anchorage System

作　　者：褚文涛[1] CHU Wen-tao(China Railway Major Bridge Engineering Group Co,Ltd,Wuhan 430050,China)

机构地区：[1]中铁大桥局集团有限公司,武汉430050

出　　处：《建材世界》2023年第2期74-77,共4页The World of Building Materials

摘　　要：老虎沟桥是一座跨越城市河道的人行悬索桥。为了降低缆索构件对小规模悬吊桥面空间通透性的影响,新建桥梁采用张开量大的空间索面形式。受限于特定狭窄场地建设条件,主缆采用独特的空间组合式链杆锚固体系,锚碇采用呈扇形布置的分离式矩形单桩基础形式。主缆采用高钒防腐涂层密封钢丝,改善了主缆耐久性及索夹抗滑移性。通过合理设置电涡流调谐质量阻尼器(ETMD)使主梁的振动得到了有效的控制。目前该桥运营状况良好,达到了预期目标。Lao Hu Gou Bridge is a pedestrian suspension bridge across the urban river.In order to reduce the impact of the cable members on the permeability of the small-scale suspension bridge deck space,the newly-built bridge adopts the form of spatial cable deck with large tensioning volume.Constrained by the construction conditions of a specific narrow site,the main cable adopts a unique spatial combination of chain link anchorage system,and the anchor uses a fan-shaped arrangement of separated rectangular mono-pile foundation form.The main cable is adopted to seal steel wires coated with high-vanadium anticorrosive,which improves the durability of the main cable and the anti-slip property of the cable clamp.The vibration of the main girder is effectively controlled through the reasonable setting of eddy current tuned mass dampers(ETMD).At present,the bridge operates well and achieves the expected goal.

关 键 词：组合式链杆 人行桥 悬索桥 景观设计 人致振动 耐久性 

分 类 号：U448.25[建筑科学—桥梁与隧道工程]