| In recent years,with the development of national economy,metro engineering construction get rapid development in China.Some earlier built subway also had small modification,but for metro construction on a large scale expansion renovation,is without precedent in China.In the future,with the increase of urban population,the subway operation ability faces increasingly severe challenges,the subway engineering inevitably facing transformation problems.Therefore,study of existing subway engineering reconstruction technology will be the inevitable question during the development of the urbanization in our country.The 17 section of the Tian Jin metro line 2,the author of this paper have conduct the thorough research to the expansion of metro engineering transformation problem: using investigation method,similar projects related information collection,the project design data,etc.,on organizing;Using model study,finite element simulation analysis of the key technologies involved,the design and construction scheme optimization Suggestions;Experience summary method,combined with the collected data,the analysis of the opinions on the expert’s demonstration,the key technology of implementation experience of systematic arrangement.The results show that: Cleared to large-scale transformation and the underground obstacles both station schemes have the feasibility.Aiming at various problems appeared in the process of transformation,all can be taken to solve the corresponding technical measures.Research conclusion of this project will provide the corresponding reference for this kind of engineering design,for the engineering construction to provide the corresponding technical experience. |
