Search for dissertations about: "hollow core"

Showing result 1 - 5 of 18 swedish dissertations containing the words hollow core.

  1. 1. Shear and Torsion Interaction in Prestressed Hollow Core Slabs

    Author : Helén Broo; Chalmers University of Technology; []
    Keywords : shear-torsion capacity; hollow core unit; shear and torsion interaction; non-linear finite element analyses; hollow core slab; precast prestressed concrete; hollow core floor;

    Abstract : There are many applications in which hollow core units are subjected to combined torsion and shear, for example in floors supported on three edges and in floors with openings. The traditional calculation method for combined shear and torsion in hollow-core units adds stresses from various sources without taking into account deformations and compatibility within the unit or restraint at the boundaries. READ MORE

  2. 2. Dynamic analysis of hollow core concrete floors

    Author : Fangzhou Liu; Jean-Marc Battini; Costin Pacoste; Kent Persson; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : .... READ MORE

  3. 3. Shear and Torsion in Concrete Structures Non-linear Finte Element Analysis in Design and Assessment

    Author : Helén Broo; Chalmers University of Technology; []
    Keywords : torsion; box-girder bridge; hollow core unit; hollow core floor; non-linear finite element analysis.; shear; prestressed concrete; Reinforced concrete;

    Abstract : For structural design and assessment of reinforced concrete members, non-linear finite element analysis has become an important tool. However, design and assessment of shear and torsion are still done with simplified analytical or empirical design methods. READ MORE

  4. 4. Experimental and Numerical Analyses of the Dynamic Behaviour of Hollow-Core Concrete Floors

    Author : Fangzhou Liu; Jean-Marc Battini; Costin Pacoste; Bassam Izzuddin; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Bro- och stålbyggnad; Structural Engineering and Bridges;

    Abstract : Precast hollow-core (HC) concrete slabs are widely used in construction, especially in Nordic countries. The combination of prestressing and low self-weight due to the voids makes it possible to build long-span floors. However, this also implies that the HC concrete floors become more sensitive to vibrations from human activities. READ MORE

  5. 5. Molecular overlayers on homogeneous and heterogeneous metal surfaces studied by core-level photoemission

    Author : Maria Smedh; Fysiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; photoelectron spectroscopy; core-level photoemission; electron energy loss spectroscopy; single crystal surfaces; metal surfaces; heterogeneous surfaces; adsorption; adsorbed molecules; hydrocarbons; molecular vibrations; carbon monoxide; adsorption sites; adsorption energy; diffusion; dissociation; Physics; Fysik; Fysicumarkivet A:2001:Smedh;

    Abstract : The main topic of this thesis is the investigation of small molecules adsorbed on metal surfaces by means of core-level photoemission spectroscopy. The thesis consists of three parts; The first group of papers concerns the effects of internal molecular vibrations on the core-level photoemission spectra. READ MORE