Acta Polytechnica CTU Proceedings. 2019, vol. 23

 

Zobrazují se záznamy 1-10 z 10

    • A HEADRACE TUNNEL RECONSTRUCTION IN TURKEY 

      Autor: Hilar, Matouš; Srb, Martin; Nosek, Jakub
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      The operation of a hydro power project in North Turkey started in 2015, included the 12km long headrace tunnel. An 8km long lower tunnel section was excavated by double shield TBM technology with 8.7m ID. Due to problems ...

    • PREPARATIONS FOR REMEDIATION OF A FORMER SURFACE MINE – A TECHNICAL RECLAMATION AREA 

      Autor: Černoch, Petr; Košťál, Jiří
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      The reclamation area for secondary float energy by-products is located on a spoil heap, 45m thick and 30 years old, and consists mostly of clay stone with high plasticity. When depositing a first 18m high stack, it was ...

    • 3D FEM ANALYSIS OF THE CONSTRUCTION PIT FOR A TBM-DRIVEN FLOOD DISCHARGE GALLERY 

      Autor: Hohberg, Jörg-Martin
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      As one speciality of the Swiss hydraulic engineering tradition, several torrent diversion schemes were undertaken dating from the 18th century, with the aim of using the natural lake as a retention basin. The recent project ...

    • PRACTICAL USE OF MODERN INVESTIGATION AND MONITORING METHODS IN POLISH LANDSLIDE REMEDIATION PROJECTS 

      Autor: Bednarczyk, Zbigniew
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      This paper discusses exemplary landslide investigations in natural Carpathian and man-made opencast mine slopes. Research methods included mapping, core drilling, laboratory testing, GPR scanning, on-line inclinometer, ...

    • RECONSTRUCTION OF NEGRELLI'S VIADUCT FROM A GEOTECHNICAL ENGINEERING POINT OF VIEW 

      Autor: Černá Vydrová, Linda
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      The reconstruction project deals with the unsatisfactory condition of the bridge construction, involving the railway superstructure with its signalling, communication and power equipment as well as the overhead lines all ...

    • IN-SERVICE REMEDIATION OF A RAILWAY EMBANKMENT TO PREVENT SETTLEMENT 

      Autor: Grepl, Jan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      After optimization of the railway geometry for higher speed, a continuous settlement of the track occurred. Improvement of the embankment body was needed; however, a complete traffic interruption was not allowed. The ...

    • EVALUATION OF UNDERGROUND STRUCTURES SUBJECTED TO SEISMIC LOADS 

      Autor: Pruška, Jan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      The paper is focused on the evaluation of the effect of earthquakes on underground structures. Free-field analysis is one solution of this task common mainly in engineering tunnelling practice, but it has some rather ...

    • A RETAINING WALL RECONSTRUCTION IN KUTNÁ HORA 

      Autor: Svoboda, Jiří; Hadačová, Dana
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      This paper addresses the reconstruction of a historical stone retaining wall at the busy Kremnická – Táborská road in the town of Kutná Hora. The structure was in very poor condition. There was the danger of an accident ...

    • RECONSTUCTION OF THE HISTORICAL BUILDING FOKSAL 13 AND 15 IN WARSAW 

      Autor: Ředina, Tomáš
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      We were asked to design geotechnical structures to enable reconstruction of historical buildings. Buildings have to meet current standards so load bearing capacity had to be increased and underground garages can be built. ...

    • A COMPARISON OF TESTING METHODS FOR DETERMINATION OF SPRAYED CONCRETE TENSILE STRENGTH 

      Autor: Závacký, Martin
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      Sprayed concrete is important construction material in tunnelling. Primary lining is essential in NATM where the sprayed concrete can be loaded by tension due to bending moments. The tension is common reason of failure ...