A study of liquefaction related damages on shield tunnels |
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| Authors: | H S Chou C Y Yang B J Hsieh S S Chang |
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| Affiliation: | a CTCI Corporation, Taipei, Taiwan, ROC;b Department of Rapid Transit System, Taipei City Government, Taipei, Taiwan, ROC |
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| Abstract: | Studies of liquefaction-related damages on underground structures are limited and sometimes controversial. Liquefaction potential analysis is essential in tunnel design in liquefiable soils. A Taipei Rapid Transit System (TRTS) tunnel site in Taipei County was selected to study the risk under liquefaction-related damage. The liquefaction risk index was applied for assessment of the overall liquefaction risks and liquefaction-induced settlement at the interest site. The anti-liquefaction measure for shield tunneling by using secondary injection grouting was discussed to eliminate the flow of liquefied soils and reduce the liquefaction-induced settlement. |
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| Keywords: | Liquefaction and liquefied soils Uplift Shield tunnel Liquefaction-induced settlement Secondary injection grouting |
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