宁波南站上跨深基坑铁路便桥静态监测技术

宁波南站上跨深基坑铁路便桥结构形式为国内首创,在便桥下深基坑开挖的同时,须保证沿海铁路列车绝对安全平稳的通行,安全监测至关重要。本文根据该工程的现场实际和结构的特点,拟定了桥梁静态监测的具体实施方案、数据分析与处理模式,研究了该桥梁变形的规律,及时提供监测分析意见,为深基坑安全和信息化施工提供指导,为铁路便桥安全运营提供保障。这对今后类似的桥梁施工监测有一定的指导和借鉴意义。

Static monitoring technology of temporary railway bridge across deep pit at Ningbo station

Temporary railway bridge structure across the deep pit in Ningbo south station is initiative in China.When excavating the deep pit under the temporary railway bridge,it is important to make sure the absolute safe and smooth of coastal railway train.According to the engineering field and structure features,the bridge static monitoring of the concrete implementing scheme,data analysis and processing mode were formulated,and the bridge deformation rule was studied,meanwhole,the timely monitoring and analysis for deep foundation pit was provided,more over,the guidance for safety and information construction of deep foundation pit,protection for safe operation of railway bridge were bwlt.It has certain guidance and reference for future similar bridge construction monitoring.