Sökning: "civil defence shelters"

Visar resultat 1 - 5 av 6 avhandlingar innehållade orden civil defence shelters.

1. 1. Structural Behaviour in Concrete Frame Corners of Civil Defence Shelters Non-linear Finite Element Analyses and Experiments

   Författare :Morgan Johansson; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; blast load; non-linear finite element analyses; reinforcement detailing; spliced reinforcement; frame corners; civil defence shelters; impact load; concrete;

   Sammanfattning : From a safety point of view it is important that a concrete structure, apart from necessary load capacity, also is able to show ductile behaviour that allows redistribution of forces so that a local failure not lead to total collapse of the structure. A structure's ability to exhibit such behaviour is highly dependent on the reinforcement detailing of the joint connections between its independent members. LÄS MER

3. 2. New reinforcement detailing in concrete frame corners of civil defence shelters : non-linear finite element analyses and experiments

   Författare :Morgan Johansson; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : .... LÄS MER

4. 3. Concrete Structures Subjected to Blast Loading

   Författare :Jonas Ekström; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; dynamic response; numerical modelling; spalling; blast load; stain-softening; wave propagation; concrete; transverse reverse loading; cyclic crack propagation;

   Sammanfattning : The interest for building safety with regards to highly dynamic events such as close by explosion has accelerated after the recent decades of terrorist attacks. The interest has expanded from civil defence shelters and pure military targets to also include civil buildings used for different civil functions. LÄS MER

5. 4. Application of Fracture Mechanics to Concrete Bridges. Finite element analyses and experiments

   Författare :Mario Plos; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; reinforced concrete; reinforcement splice; full-scale test; shear failure; fracture mechanics; fatigue test; static test; concrete frame corner; non-linear finite element analysis; concrete bridge;

   Sammanfattning : Material models based on fracture mechanics together with non-linear finite element analyses have been used in combination with experiments to study the behaviour of reinforced concrete bridges. The work covers two aspects of interest in the design of concrete bridges.* The shear behaviour was studied in full-scale tests on two highway bridges. LÄS MER

7. 5. Sheltered Society : Civilian Air raid shelters in Sweden — from idea to materiality, 1918-1940 and beyond

   Författare :Peter Bennesved; Finn Arne Jørgensen; Christer Nordlund; Thomas Kaiserfeld; Umeå universitet; []
   Nyckelord :HUMANIORA; HUMANITIES; Air raid shelters; Civil defense; Aerial protection; History of Technology; Multi Level Perspective; Large Technical Systems; Fortifications; Networks; idé- och lärdomshistoria; History Of Sciences and Ideas; History; historia;

   Sammanfattning : In 2002, Sweden finally stopped producing air raid shelters for its population after over sixty years of continuous production since 1938. Judging from the Swedish Civil Contingencies Agency, MSB, the Swedish Air raid shelter registry contain about 65,000 air raid shelters registered as being in use. LÄS MER