{"id":238,"date":"2021-09-05T13:24:00","date_gmt":"2021-09-05T04:24:00","guid":{"rendered":"https:\/\/ugitec.co.jp\/?post_type=products&p=238"},"modified":"2021-11-01T08:57:30","modified_gmt":"2021-10-31T23:57:30","slug":"largest","status":"publish","type":"products","link":"https:\/\/ugitec.co.jp\/en\/products\/largest\/","title":{"rendered":"World Largest Class TBM"},"content":{"rendered":"\n

\u230017.45m EPB TBM<\/h3>\n\n\n\n
\"\u230017.45\uff4d
Completion of factory assembly<\/figcaption><\/figure>\n\n\n\n
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Group photo in front of the TBM<\/figcaption><\/figure>\n<\/div>\n\n\n\n
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\"\u03a617.45m
Completion of excavation<\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n

Project outline<\/h3>\n\n\n\n
Construction name<\/strong><\/td>State Highway 99 Tunnel Construction<\/td><\/tr>
Construction site<\/strong><\/td>Seattle, Washington, USA<\/td><\/tr>
Owner name<\/strong><\/td>Washington State Department of Transportation \/ WSDOT<\/td><\/tr>
Contractor name<\/strong><\/td>Seattle Tunnel Partners (Dragados USA, Tutor Perini JV)<\/td><\/tr>
Features of construction<\/strong><\/td>
  • Tunnel length: 2,856m<\/li>
  • Minimum curve radius: 1,800m<\/li>
  • Gradient: -4% \uff5e + 4%<\/li>
  • Maximum overburden: 65.2m<\/li>
  • Design earth pressure: 4.3bar Tunnel center<\/li><\/ul><\/td><\/tr>
Segment<\/strong><\/td>
  • Type: Reinforced concrete segment<\/li>
  • Outer diameter: 17,069mm<\/li>
  • Inner diameter: 15,850mm<\/li>
  • Width:1,980mm<\/li>
  • Number of ring pieces: 10<\/li>
  • Maximum mass of 1 piece: Approx. 17ton<\/li><\/ul><\/td><\/tr>
Machine design conditions<\/strong><\/td>
  • Design pressure: Maximum 7bar (10bar in emergency)<\/li>
  • Excavation speed: 60mm \/ min<\/li>
  • Segment assembly time: 30min \/ ring<\/li><\/ul><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

    Tunnel outline<\/h3>\n\n\n\n
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    Completion image<\/h4>\n\n\n\n
    \"Completion<\/figure>\n<\/div>\n\n\n\n
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    Tunnel route<\/h4>\n\n\n\n
    \"Tunnel<\/figure><\/div>\n<\/div>\n<\/div>\n\n\n\n
    \"Tunnel<\/figure>\n\n\n\n

    Soil profile<\/h4>\n\n\n\n
    \"Soil<\/figure>\n\n\n\n

    Main specifications<\/h3>\n\n\n\n
    TBM type<\/strong><\/td>EPB TBM<\/td><\/tr>
    TBM outer diameter<\/strong><\/td>\u230017,450mm<\/td><\/tr>
    Tail plate thickness<\/strong><\/td>140mm<\/td><\/tr>
    Shield jack propulsion speed<\/strong><\/td>Maximum 80mm \/ min<\/td><\/tr>
    Total thrust force<\/strong><\/td>392,000kN (Unit area thrust: 1,639kN \/ m2)<\/td><\/tr>
    Cutter drive torque<\/strong><\/td>Rated 147,400kN-m<\/td><\/tr>
    Cutter speed<\/strong><\/td>Maximum 1.8min-1<\/td><\/tr>
    Cutter drive total power<\/strong><\/td>13,440kW<\/td><\/tr>
    Machine total power<\/strong><\/td>23,000kW<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

    TBM main components<\/h3>\n\n\n\n
    \"Back-up<\/figure>\n\n\n\n

    Double arm erector<\/h3>\n\n\n\n
    \"Double<\/figure>\n\n\n\n

    Back-up equipment<\/h3>\n\n\n\n
    \"Back-up<\/figure>\n\n\n\n

    Pictures of factory assembly<\/h3>\n\n\n\n
    \"Pictures<\/figure>\n\n\n\n
    <\/div>\n\n\n\n
    \"Pictures<\/figure>\n\n\n\n

    Introduction of EPB TBM<\/h3>\n\n\n\n