Essays about: "arching effect"

Found 4 essays containing the words arching effect.

1. 1. Optimization of support in rock pillars between two parallel tunnels

   University essay from KTH/Jord- och bergmekanik

   Author : Alexander Kote; Sohaib Ishaq; [2022]
   Keywords : tunnel; rock pillar support; rock pillar stability; rock mass; stresses; arching effect; Nyckelord: tunnel; bergförstärkning; bergpelare; bergmassa; spänningar; valveffekt;

   Abstract : When two parallel tunnels are excavated under high to moderate horizontal in-situ stresses combined with minor deformations in the pillar between the tunnels, the in-situ stresses can be redistributed over the tunnels in form of two compressive arches and are transferred from the roof to the abutments of the two tunnels. At additional deformations in the pillar, a new redistribution of the stresses can occur creating one compressive arch over both of the tunnels. READ MORE

3. 2. Political Trust and Its Determinants : Exploring the role of cultural and institutional related determinants of political trust in Sweden

   University essay from Uppsala universitet/Statsvetenskapliga institutionen

   Author : Leonard Björebäck; [2021]
   Keywords : political trust; trust formation; origins of political trust; cultural theory; institutional trust; political confidence; institutional theory; determinants of political trust; The SOM Institute; The SOM Institute Cumulative Dataset; Swedish population;

   Abstract : There is a current widespread knowledge about what factors that is of importance when explaining levels of individuals political trust. Unfortunately, the same knowledge is not at hand as to whether these ‘determinants’ of political have changed over time and if so how? In other words, can we assume that citizens form their trust in similar matters over time or has there been a shift? With the purpose of contributing to new knowledge about political trust, this thesis mainly explored if there has been a change in the effects of often argued to be strong determinants on political trust and secondly if there are any trends as to how these effects has changed over time. READ MORE

4. 3. VERTICAL ELLIPTICAL ACCESS-SHAFTS Geometrical optimisation through FE-modelling

   University essay from Lunds universitet/Geoteknik; Lunds universitet/Institutionen för byggvetenskaper

   Author : Björn Elfving; Aron Sandström; [2020]
   Keywords : Access-shafts; FE-modelling; Plaxis; Robot; Elliptical; Circular; Optimisation; Geotechnical; Engineering; Retaining; Structures; Tunnel; Soil; Interaction; Technology and Engineering;

   Abstract : Urbanisation is causing densification of cities and more and more facilities are being placed in the underground to utilise the urban space as efficiently as possible. Access to the underground is obtained by constructing vertical access shafts. READ MORE

5. 4. The WELL Building StandardA Study of Bengt Dahlgren's office in Stockholm

   University essay from KTH/Energiteknik

   Author : David Landmark; [2019]
   Keywords : WELL; WELL Building Standard; Green Building Certification; Indoor Climate; Well-being; WELL; WELL Building Standard; Miljöcertifiering; Inomhusklimat; Välmående; Miljöbyggnad;

   Abstract : Throughout our lives, we spend approximately 80–90% of our time indoors, and the environment which wereside in is a key factor determining our comfort and well-being. A favorable indoor environment can enhance our quality of life whereas a less than favorable environment may have the opposite effect. READ MORE