复杂环境下高架桥上部结构拆除的技术措施

Technical Measures for the Removal of the Superstructure of Viaduct under Complex Environment

根据我国早期桥梁建设情况,总结了我国拆除桥梁工作具有周边条件复杂、结构种类多样、多专业协同以及技术风险高等特点,并研究总结了国内外现有的拆桥经验和主要拆桥方法,以及各类拆桥方法比较适用的环境。通过对某市互通立交在复杂环境下桥梁上部结构拆除的技术措施研究,从该桥上部结构拆除的方案选择、安全控制和施工监控等方面入手,得出了桥梁的拆除工作具有全面性、针对性、预判性和实时联动性四个特点。为以后桥梁拆除技术的选择和拆桥方案的编制提供一些借鉴作用。

According to the situation of early bridge construction in China,summarizes the characteristics of bridge demolition in China,such as complex surrounding conditions,diverse structure types,multi-disciplinary cooperation and high technical risks;and researches the existing bridge demolition experience and main bridge demolition methods at home and abroad,and the environment suitable for all kinds of bridge demolition methods.Through the study of the technical measures for the demolition of the superstructure of the bridge under the complex environment of the interchange in a city,From the aspects of scheme selection,safety control and construction monitoring of the bridge superstructure demolition,It is concluded that the bridge demolition work has four characteristics of comprehensiveness,pertinence,prediction and real-time linkage.It can provide some reference for the selection of bridge demolition technology and the preparation of bridge demolition plan in the future.