Abstract
Abstract: Before the construction of Metro station, many accessory structures need to be constructed firstly, including shaft, Cross channel, and metro station pilot tunnel, etc. Many Engineering cases show that the risks of the circumstances around the Metro station caused by the excavation of these accessory structures are the major component of the metro construction risk. In this paper, the risk caused by construction of the metro shaft adjacent to building was studied, which located at the crossings of ziyou Road and Renmin Street, Changchun, China. Firstly, the major risk was introduced and the construction mechanic behavior was researched by using MIDAS/GTS finite element software package. Then, a control method was proposed to eliminate this risk, which was verified by using finite element software. Finally, the proposed measure was also validated with the result of construction monitoring for this project. This works focus on studying the excavation mechanics behavior of metro shaft and its influence on the around environment, and these conclusions are useful for providing a basis for similar project construction in the future.
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