天津站交通枢纽轨道换乘中心工程岩土工程勘察

The Geotechnical Engineering Investigation of Tianjin Traffic Transfer Junction Center

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 Tianjin traffic transfer junction center station is a large and deep pit with complicated engineering structure, geological condition and environmental condition. Adopting appropriate investigation methods, supplying reasonable design parameters and providing scientific geotechnical engineering evaluation and suggestions are important parts of the conjunction construction. Research results： By complex exploration methods, which including geological drilling, in -situ measurement and soil tests in or out doors, the engineering geological condition and hydro - geological condition is found out and the parameters of the site soil and water are provided. The engineering problems such as stability and feasibility of the site, the style of pit - supporting structure, expanding and piping of pit bottom, anti - floating of the structure, controlling measures of dewatering and so on are analyzed and estimated, and pertinent engineering suggestions are provided as well, which offers scientific basis for the engineering design and construction.