深业上城皇岗景观人行天桥设计创新与实践

Innovation and Practice in Design of Huanggang Landscape Pedestrian Overpass in Shenye Shangcheng

摘要:

通过工程案例解析，系统阐述了景观人行天桥的设计创新，设计采用新型的三角形墩梁结合的空间钢结构形式以实现慢行交通联系、跨越现状快速路、与地铁车辆段结构共构以及建筑造型等功能。通过对比分析国内外人行天桥设计规范，探讨舒适度指标的合理取值，通过计算桥梁结构的最大振动响应来评估其舒适性，进一步优化结构的布置形式。采用 MIDAS Civil 等空间有限元程序分析主体结构空间钢桁架受力性能，对复杂钢节点进行精细化设计。同时介绍了人行天桥与城市环境、人性化设计与景观相融合的创新实践，为类似景观天桥的建设提供重要的工程参考。

Abstract:

Through the analysis of engineering cases, the design innovation of landscape pedestrian overpasses is systematically expounded. A new type of spatial steel structure form with integrated triangular piers and beams is adopted to fulfill the functions such as connecting non-motorized traffic, spanning the existing expressway, co-structuring with the metro depot structure, and architectural modeling. Meanwhile, through a comparative analysis of codes and standards for pedestrian overpasses at home and abroad, the reasonable value range of comfort indicators are further discussed. The comfort of the bridge is evaluated by calculating the maximum vibration response of the bridge structure so as to further optimize the structural layout. The spatial finite element programs such as MIDAS Civil are adopted to analyze the mechanical properties of the spatial steel trusses in the main structure. The refined design is conducted for complex steel joints. At the same time, the innovative practices of integrating the pedestrian overpasses with the urban environment, and the human-centered design with landscape elements are introduced, which provides the important engineering references for the construction of similar landscape pedestrian overpasses.