摘要
越龙山人行玻璃悬索桥为主跨710 m的空间索面地锚式人行玻璃悬索桥。该桥主缆垂跨比为1/11.8,采用大张开量的空间索面,跨中设置3对柔性中央扣,桥下设置空间索面的抗风缆,以提高桥梁整体抗风稳定性,主索鞍采用竖向摩擦隔板技术以提高索鞍的抗滑移安全系数。桥塔采用门式结构,由混凝土塔柱和钢横梁组成。根据地形因素,西北侧及东南侧主缆设置隧道式锚碇,东北侧及西南侧主缆设置重力式锚碇,抗风缆设置岩锚桩结构。加劲梁采用纵横梁格构体系,纵梁采用4道工字钢,横梁采用箱梁形式,外侧2道纵梁间距由跨中8.5 m按抛物线变化至桥塔处17.5 m,中纵梁3 m宽度范围内设置玻璃桥面,外侧设置压型钢板超韧性混凝土桥面。
The Yuelongshan Glass Pedestrian Suspension Bridge is an earth-anchored suspension bridge with a main span of 710 m.The bridge features its flared spatial cable planes that match with a sag-to-span ratio of 1/11.8.Three pairs of flexible central buckles are placed at midspan,and wind cables that are arranged in spatial cable planes are tensioned below the bridge to improve the integral wind resistant stability of the bridge.The main cable saddles are fitted with vertical friction plates to enhance their anti-slip safety factor.To address the constraints at the bridge site,the towers are portal-framed structures that consist of concrete columns and steel cross beams,and the main cables are anchored to tunnel anchorages on one side and to gravity anchorages on other side.The wind cables are anchored to the rock-embedded piles.The stiffening girder consists of latticed girders formed of four I steel stringers and floor beams of box cross-section,the two edge stringers are at 8.5 m centers at midspan and 17.5 m at towers.In the vicinity of 3 m of the two intermediate stringers,glass deck slabs are placed,and the remaining deck is formed of high toughness concrete slabs with profiled steel sheet.
作者
刘丰洲
许伟龙
吴强强
LIU Feng-zhou;XU Wei-long;WU Qiang-qiang(Xicheng Engineering Design Group Co.,Ltd.,Hangzhou 310012,China;Zhejiang Communications Construction Group Co.,Ltd.,Hangzhou 310051,China)
出处
《桥梁建设》
EI
CSCD
北大核心
2023年第3期114-119,共6页
Bridge Construction
基金
浙江交工集团科技研究开发计划项目(2020J7)。
关键词
悬索桥
人行桥
空间索面
玻璃桥面
压型钢板
桥梁设计
suspension bridge
pedestrian bridge
spatial cable plane
glass deck
profiled steel sheet
bridge design
