Sökning: "Teddy Johansson"

Hittade 2 avhandlingar innehållade orden Teddy Johansson.

  1. 1. Frysning av jord och berg vid tunnelbyggande. Studier av deformationer och spänningar

    Författare :Teddy Johansson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Building engineering; Byggnadsteknik;

    Sammanfattning : .... LÄS MER

  3. 2. Artificial Ground Freezingin Clayey Soils : Laboratory and Field Studies of Deformations During Thawing at the Bothnia Line

    Författare :Teddy Johansson; Staffan Hintze; Håkan Stille; Sven Knutsson; Kauko Kujala; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Artificial ground freezing; AGF; thaw deformation; deformation; thawing; frost heaving; Bothnia Line.; Artificiell markfrysning; artificiell jord- och bergfrysning; AGF; tiningsdeformation; deformation; tining; tjälhävning; Botniabanan; Geoengineering; Geoteknik;

    Sammanfattning : Artificial ground freezing as a method to temporarily stabilize and create hydraulic sealing in urban as well as in rural areas has been used in a number of Swedish construction projects, particularly during the last decade. One problem with the freezing of soil and rock is that fine-grained clayey types of soils have showed a tendency to under certain circumstances, during the thawing process, create a pore water overpressure and to consolidate, despite a change in the external loading conditions. LÄS MER