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| The Risk Assessment of Shield Construction under the Condition of Adjacent Buildings in Xi’an Metro |
| REN Jian - xi1，YANG Feng1, ZHU Yuan - wei2 |
| (.Xi'an Science and Technology University， Xiran， Shaanxi 710054， China； 2. The First Engineering Limited Company, China Railway 15th Bureau Group Co. Ltd，Xi’an, Shaanxi 710018, China) |
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Abstract Abstract ： Research purposes ： Under the condition of adjacent buildings，the risk of metro shield construction need to be evaluated，and the main risk source and secondary risk source need to be determined. Taking a section in line 3 of Xiran metro as background, this paper uses the fuzzy comprehensive evaluation method to establish the risk assessment system of shield construction under the condition of adjacent buildings，assesses the risk; level of shield construction in the section，to provide the scientific basis for reducing the risk of shield construction level. Research conclusions:( 1 ) The main influence factors are the engineering geology，building foundation type，relative location of buildings and tunnel and shield construction technology， through analyzing the main risk factors of shield tunnel under the condition of adjacent buildings in the section. (2) Using the fuzzy comprehensive evaluation method， the rsk of shield tunnel under the condition of adjacent buildings in the section is third level, belonging to the moderate rsk. So the corresponding mitigation measures must be taken to make shield tunnel constrjiction rsk down to first level. (3 ) The research results can provide the references to the constrjiction safety of similar metro engineerng.
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Received: 18 September 2015
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2016, Vol. 33 
