Sökning: "section modulus"

Visar resultat 1 - 5 av 18 uppsatser innehållade orden section modulus.

1. 1. Tåginducerade markvibrationer – analys med NGI:s verktyg VibTrain

   Master-uppsats, KTH/Jord- och bergmekanik

   Författare :Andreas Håård; [2022]
   Nyckelord :ground vibration; high speed railway; ground vibration boom; critical train speed; VibTrain; Ledsg˚ard; Ostl¨anken; J¨arnasl¨atten. iii;

   Sammanfattning : Trafikverket, the Swedish Transport Administration, has been commissioned by the Swedishgovernment to make plans for new railway mainlines between the country’s three largest cities:Stockholm and Gothenburg/Malm¨o. The planned operating speed of the new mainlines isbetween 250–320 km/h. LÄS MER

3. 2. Dynamic Analysis of Double Tee Floors Subjected to Human Activity : A comparison between a standard- and a modified cross section

   Master-uppsats, KTH/Bro- och stålbyggnad

   Författare :Bjondina Hoti; Fadi Simonides; [2022]
   Nyckelord :;

   Sammanfattning : Building with larger spans and more slender elements is more common today since the demand for open floor plans has increased. The consequence is that low frequency floors and vibration problems arise. Such floors tend to undergo large vibrations since their low eigenfrequency coincides with the frequency which human activities have. LÄS MER

4. 3. Evaluation of a testing method for shear stiffness properties for cross laminated timber

   Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Byggnadsmekanik; Lunds universitet/Institutionen för byggvetenskaper

   Författare :Calle Lind; [2022]
   Nyckelord :CLT; cross laminated timber; EN 16351; four-point bending; rolling shear modulus; FE-modelling; Technology and Engineering;

   Sammanfattning : Cross laminated timber (CLT) is an engineered wood product that was first developed in the 1990s. Since then it has grown in popularity thanks to its many advantages such as: low environment impact, high degree of prefabrication and low weight. As the material is relatively new the standardization process is still in the early stages. LÄS MER

5. 4. CHARACTERISATION OF CROSS LAMINATED TIMBER PROPERTIES

   Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Byggnadsmekanik; Lunds universitet/Institutionen för byggvetenskaper

   Författare :Emil Nilsson; [2021]
   Nyckelord :CLT; cross laminated timber; in-plane loading; out-of-plane loading; beam; rolling shear modulus; experimental tests; FE-modelling; Technology and Engineering;

   Sammanfattning : This project concerns an analysis of a hitherto untested method for determining the modulus of elasticity (MoE) and shear modulus parallel to grain, as well as the rolling shear modulus of cross laminated timber (CLT) through 3-point bending tests. A review of analytical models and methods is included, followed by an evaluation of the effect of the annual ring orientation and shear stress distribution at shear loading of individual board cross-sections. LÄS MER

7. 5. Testning av betongskivor för inredningsändamål

   Uppsats för yrkesexamina på grundnivå, Linnéuniversitetet/Institutionen för byggteknik (BY)

   Författare :Karzan Ashrafi; Ibrahim Ali Ahmed; [2021]
   Nyckelord :Concrete slab; carbon dioxide emissions; pH-scale; environmental aspects; concrete slab production; tensile strenght; section modulus; chemical reactions; Betongskiva; betongskiva produktion; brottgräns; Koldioxidutsläpp; pH-värde; Kemisk påverkan; slagtålighet;

   Sammanfattning : Detta examensarbete syftar till att utveckla ett nytt sätt att använda betong för inredningsändamål. Betong har alltid använts i större byggnader, infrastruktur och andra kategorier. Nyligen började den moderna inredningen använda betong inomhus, till exempel som bänkskiva eller som en hylla. LÄS MER