城市核心区深基坑施工重要管线保护技术

Important Pipeline Protection Technology for Deep Foundation Pit Construction in Urban Core Area

城市工程建设往往与周边环境有着密不可分的关系。基坑工程施工中可能会对附近管线造成额外的附加力,如果保护不当导致管线破裂,往往造成极大的社会危害性。通过对周边环境的特点分析,应选用适合的围护支撑体系及一系列施工保障措施,以确保基坑整体安全。前撑式注浆型钢斜支撑作为一种新型支护方式,具有抗侧移强度高、施工基坑变形小等特点,经实践证明了其在复杂周边环境下的可靠性,可为今后类似工程提供一定的参考价值。

Urban engineering construction is often closely related to the surrounding environment.The construction of foundation pit may cause additional force to nearby pipelines.If the pipeline is broken due to improper protection,it often causes great social harm.Through the analysis of the characteristics of the surrounding environment,the appropriate support system and a series of construction guarantee measures should be selected to ensure the overall safety of foundation pit.As a new type of support,the front support grouted profile steel inclined support has the characteristics of high lateral displacement resistance and small deformation of foundation pit during construction.The practice proves its reliability in complex surrounding environment,which can provide some reference for similar projects in the future.