连续箱梁桥非对称拆除分析与安全评估

Asymmetric Demolition Analysis & Safety Assessment of Continuous Box Girder Bridge

以肥西县翡翠路派河桥旧桥拆除为例,以施工单位提出的4种拆除方案为基础,通过力学概念分析和有限元计算分析,对混凝土连续梁桥的拆除顺序及支架架设的施工方案提出优化建议,并进一步评估在各拆除步骤下待拆结构的安全性,指导拆除施工作业。通过该桥梁拆除案例的分析,将为同类型桥梁拆除的专项设计和分析提供有价值的参考和借鉴。

Taking the demolition of Paihe Old Bridge on Jade Rd. in Feixi as an example, based on 4 demolition schemes proposed by the construction unit, through mechanical concept analysis & finite element calculation analysis, this paper puts forward optimum suggestions on the demolition sequence of the concrete continuous beam bridge & the construction scheme of bracket erection, and further evaluates the construction schemes to be demolished under each demolition step. The safety of the structure is used to guide the demolition construction. Through the analysis of the bridge demolition case, it will provide valuable reference for the special design & analysis of the same type of bridge demolition.