CAJ | 학술논문

对连接2栋建筑净跨度达45 m的某曲线型钢桁架人行天桥展开现场人行振动加速度响应实测，得到了在各种行走和跳跃工况下人行天桥加速度响应的现场实测数据。基于希尔伯特-黄变换，对人行天桥结构的动力特性，包括自振频率和结构阻尼，进行了有效识别。利用有限元软件建立了该人行天桥结构有限元模型，分析天桥结构在行人荷载激励条件下的动力响应。对实测数据和数值分析结果进行比对，数值分析结果基本符合现场实测数据。最后，结合国内外规范对该天桥的人行舒适度进行了合理评价。
대련접2동건축정과도체45 m적모곡선형강항가인행천교전개현장인행진동가속도향응실측，득도료재각충행주화도약공황하인행천교가속도향응적현장실측수거。기우희이백특-황변환，대인행천교결구적동력특성，포괄자진빈솔화결구조니，진행료유효식별。이용유한원연건건립료해인행천교결구유한원모형，분석천교결구재행인하재격려조건하적동력향응。대실측수거화수치분석결과진행비대，수치분석결과기본부합현장실측수거。최후，결합국내외규범대해천교적인행서괄도진행료합리평개。
We carried out a field measurement on the pedestrian-induced vibration of a steel truss footbridge connecting two buildings with a curved planar shape and a net span up to 45 m. Based on the Hilbert-Huang transformation, we effectively identified the dynamic properties of the footbridge, i. e. , natural frequencies and damping ratios. We established the finite element mode of the footbridge. The finite element analysis results agree well with those of the field measurements. We also accessed the vibration serviceability of the footbridge using the domestic and international standards currently available.