Filtern
Dokumenttyp
- Beitrag zu einem Tagungsband (21) (entfernen)
Referierte Publikation
- nein (21) (entfernen)
Schlagworte
- Ground vibration (5)
- Building vibration (3)
- Hammer impact (3)
- Layered soil (3)
- Vibration measurements (3)
- Bahnerschütterungen (2)
- Container loading (2)
- Drop test (2)
- Foundation load (2)
- Soil-wall-floor model (2)
- Train passage (2)
- Train-induced ground vibration (2)
- Vehicle-track interaction (2)
- 2-span bridge (1)
- Amplitude-charge weight laws (1)
- Amplitude-distance laws (1)
- Apartment building (1)
- Attenuation (1)
- Axle loads (1)
- Axle-sequence spectrum (1)
- Bodenübertragungsfunktion (1)
- Column/wall resonance (1)
- Dispersionsmessung (1)
- Displacements (1)
- Elastische Gleiselemente (1)
- Emission (1)
- Erschütterungen (1)
- Erschütterungsausbreitung (1)
- Erschütterungsminderung (1)
- Erschütterungsprognose (1)
- Evaluation (1)
- Excitation forces (1)
- Explosion-induced ground vibrations (1)
- Filter effects (1)
- Finite element models (1)
- Floor resonance (1)
- Freight train (1)
- Gleiströge (1)
- Ground vibration measurements (1)
- Halbraum (1)
- High-Rise Building (1)
- High-speed train (1)
- Immission (1)
- Inertial Interaction (1)
- Irregularities (1)
- Kinematic Interaction (1)
- Layered soils (1)
- Long-span bridge (1)
- Measurement (1)
- Measurements (1)
- Modal force spectrum (1)
- Modes (1)
- Nachgiebigkeiten (1)
- Office building (1)
- Office tower (1)
- Passenger train (1)
- Pile Foundation (1)
- Prediction of explosion induced ground and building vibration (1)
- Propagation from a tunnel (1)
- Railway bridge (1)
- Railway tunnel (1)
- Randomly heterogeneous soil (1)
- Residential building (1)
- Scattering (1)
- Simple prediction (1)
- Slab track (1)
- Soil properties (1)
- Soil-building interaction (1)
- Soil-building resonance (1)
- Surface Foundation (1)
- Surface-tunnel reduction (1)
- Train speed (1)
- Transfer function (1)
- Transmission (1)
- Tunnel (1)
- Tunnel-pile transfer (1)
- Varying stiffness (1)
- Vehicle-track-soil interaction (1)
- Vibration measurement (1)
- Vollraum (1)
- Waves (1)
- Wellenausbreitung in der Tiefe (1)
- Wellengeschwindigkeit (1)
- Windenergieanlagen (1)
- Zerstreute Achsimpulse (1)
- Zuggeschwindigkeit (1)
Organisationseinheit der BAM
- 7 Bauwerkssicherheit (21) (entfernen)
The Federal Institute of Material Research and Testing has performed many impact tests from very small laboratory tests to very big “free-field” tests with heavy containers on stiff foundations. The first measurements have been done on a big foundation where it should be guaranteed that the foundation is rigid and the container is tested properly. Later on, a smaller drop test facility has been built on the ground inside an existing building. It had to be controlled by prediction and measurements that the drop test will not damage the building. Tests from different heights on soft, medium, and stiff targets have been done to find out rules which allow to identify acceptable and unacceptable drop tests. Later on, the biggest drop test facility has been built for masses up to 200 t. It was necessary for the design of the foundation to estimate the forces which oc-cur during the drop tests. In addititon, the acceptable tests should be selected and controlled by measurements where the impact duration is important. Dif-ferent sensors, accelerometers, accelerometers with mechanical filters, geo-phones (velocity transducers), strain gauges, and pressure cells have been ap-plied for these tasks. Signal transformations and model calculations have been used to check and understand the dynamic measurements. The simplest law is the conservation of the momentum which is a good approximation if the impact is short. If the soil under the foundation has an influence on the deceleration of the container, the maximum foundation velocity is lower than the simple esti-mation.