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研究目的:天津站交通枢纽轨道换乘中心工程为一深大基坑工程,工程结构、地质条件、环境条件都极为复杂,采用适宜的勘察方法、提供合理的设计参数、提出科学的岩土工程评价和措施是工程建设的重要环节。研究结果:通过采用地质钻探、原位测试和室内外试验等综合勘察方法,查明了场地的工程地质和水文地质条件,提出了各项水土参数,并对场地的稳定性和适宜性、基坑围护结构型式、基坑坑底隆起和管涌、结构抗浮、降水控制等岩土工程问题进行了分析评价,提出了有针对性的工程措施意见,为设计和施工提供了科学依据。
Research purposes: The transportation hub orbit transfer center project of Tianjin Railway Station is a deep foundation pit project. The engineering structure, geological conditions and environmental conditions are extremely complicated. Appropriate survey methods are adopted to provide reasonable design parameters and propose scientific geotechnical engineering Evaluation and measures are an important part of the project construction. Findings: The geological and hydrogeological conditions of the site were identified through comprehensive exploration methods such as geological drilling, in situ testing and indoor and outdoor tests. Various water and soil parameters were put forward, and the stability and suitability of the site, Geotechnical engineering such as the type of retaining structure, foundation pit pit uplift and piping, structure anti-floating and precipitation control were analyzed and evaluated. Targeted suggestions on engineering measures were put forward, which provided scientific basis for design and construction.