Refine
Year of publication
Document Type
- Conference Proceeding (119)
- Article (81)
- Part of a Book (27)
- Book (9)
- Report (3)
- Diploma Thesis (1)
- Doctoral Thesis (1)
- Talk (1)
Language
- English (128)
- German (113)
- Multiple languages (1)
Has Fulltext
- no (242) (remove)
Keywords
- Earthquake (5)
- Seismic design (4)
- INODIS (3)
- Out-of-plane load (3)
- Seismic loading (3)
- earthquakes (3)
- Adjacent buildings (2)
- Historical centres (2)
- INSYSME (2)
- Masonry infill (2)
- Shake table test (2)
- Stone masonry (2)
- Tanks (2)
- industrial facilities (2)
- installations (2)
- piping (2)
- seismic design (2)
- seismic loading (2)
- Artificial intelligence (1)
- Ausfachungsmauerwerk (1)
- BIM (1)
- Basisisolierung (1)
- Bauwerksüberwachung (1)
- Behaviour factor q (1)
- Bemessung (1)
- Blind prediction competition (1)
- Capacity Curve (1)
- Cardiovascular MRI (1)
- Civil engineering (1)
- Components (1)
- DIN EN 1996 (1)
- Decoupling (1)
- Design examples (1)
- EN 1998-4 (1)
- ESHM20, industrial facilities (1)
- Earthquake Engineering (1)
- Emilia-Romagna earthquake (1)
- Empirical consequence curves (1)
- Empirical fragility functions (1)
- Erdbeben (1)
- Erdbebeneinwirkung (1)
- Eurocode 8 (1)
- Frame structure (1)
- Genetic algorithm (1)
- Gust wind response (1)
- In- plane damage (1)
- In-plane (1)
- In-plane load (1)
- In-plane performance, isolation (1)
- Industrial facilities (1)
- Industrial units (1)
- Infill wall design (1)
- Interaction (1)
- Isolation (1)
- Left ventriular function (1)
- Linear elastic analysis (1)
- MR-stethoscope (1)
- Magnetic field strength (1)
- Magnetic resonance imaging (MRI) (1)
- Masonry partition walls (1)
- Masonry structures (1)
- Mauerwerksbauten (1)
- Mauerwerksgebäude (1)
- Modern constructions (1)
- Momentenverteilung (1)
- Monitoring (1)
- Monte Carlo Tree Search (1)
- Multi-storey (1)
- Neo-Deterministic (1)
- Numerical modelling (1)
- Out-of-plane (1)
- Out-of-plane capacity (1)
- Out-of-plane failure (1)
- Out-of-plane strength (1)
- PBEE (1)
- Piping (1)
- Precast buildings (1)
- Pushover analysis (1)
- PushoverAnalysen (1)
- RC frames (1)
- Rahmentragwirkung (1)
- Reinforced concrete frame (1)
- Response spectrum (1)
- Seismic (1)
- Seismic Hazard (1)
- Sensor (1)
- Silos (1)
- Slab deflection (1)
- Spectral analysis (1)
- Stahlbetonrahmen (1)
- Structural design (1)
- Structural health monitoring (1)
- Tank (1)
- Unreinforced masonry buildings (1)
- Unreinforced masonry walls (1)
- Verhaltensbeiwerte (1)
- Vulnerability Curves (1)
- Wand-Decken-Interaktion (1)
- Wind turbulence (1)
- Window opening (1)
- Ziegelmauerwerk (1)
- behaviour factor q (1)
- body limbs (1)
- cardiac gating (1)
- cardiovascular MR imaging (1)
- churches (1)
- connection detail (1)
- deserts (1)
- early warning and response system (1)
- earthquake (1)
- earthquake engineering (1)
- elastomeric bearing (1)
- electrocardiogram (1)
- equivalent stiffness (1)
- finite element method (1)
- fluid structure interaction (1)
- fragility curves (1)
- friction pendulum bearing (1)
- granular silo (1)
- high field MR imaging (1)
- hypoplasticity (1)
- impulsive effects (1)
- in-plane (1)
- in-plane and out-of-plane failure (1)
- in-plane behaviour (1)
- integration SHM in BIM (1)
- interconnected sensor systems (1)
- linear elastic analysis; (1)
- liquid storage tank (1)
- liquid-storage tank (1)
- liquid-structure interaction (1)
- lizards (1)
- macro-element (1)
- magnetic resonance imaging (1)
- masonry infill (1)
- masonry structures (1)
- modern constructions (1)
- nonlinear transient analyses (1)
- out-of-plane (1)
- out-of-plane behaviour (1)
- phonocardiogram (1)
- safety control (1)
- seismic (1)
- seismic hazard (1)
- seismic isolation (1)
- seismic response (1)
- seismic risk (1)
- seismic structural damage detection via SHM (1)
- seismic vulnerability (1)
- simplified approach (1)
- structure-soil-structure interaction (1)
- swimming (1)
- truss (1)
- unreinforced masonry buildings (1)
- vault (1)
- vocal fold oscillation (1)
Institute
- Fachbereich Energietechnik (242) (remove)
Seismic design of buried pipeline systems for energy and water supply is not only important for plant and operational safety but also for the maintenance of the supply infrastructure after an earthquake. The present paper shows special issues of the seismic wave impacts on buried pipelines, describes calculation methods, proposes approaches and gives calculation examples. This paper regards the effects of transient displacement differences and resulting tensions within the pipeline due to the wave propagation of the earthquake. However, the presented model can also be used to calculate fault rupture induced displacements. Based on a three-dimensional Finite Element Model parameter studies are performed to show the influence of several parameters such as incoming wave angle, wave velocity, backfill height and synthetic displacement time histories. The interaction between the pipeline and the surrounding soil is modeled with non-linear soil springs and the propagating wave is simulated affecting the pipeline punctually, independently in time and space. Special attention is given to long-distance heat pipeline systems. Here, in regular distances expansion bends are arranged to ensure movements of the pipeline due to high temperature. Such expansion bends are usually designed with small bending radii, which during the earthquake lead to high bending stresses in the cross-section of the pipeline. Finally, an interpretation of the results and recommendations are given for the most critical parameters.
Seismic excited liquid filled tanks are subjected to extreme loading due to hydrodynamic pressures, which can lead to nonlinear stability failure of the thinwalled cylindrical tanks, as it is known from past earthquakes. A significant reduction of the seismically induced loads can be obtained by the application of base isolation systems, which have to be designed carefully with respect to the modified hydrodynamic behaviour of the tank in interaction with the liquid. For this reason a highly sophisticated fluid-structure interaction model has to be applied for a realistic simulation of the overall dynamic system. In the following, such a model is presented and compared with the results of simplified mathematical models for rigidly supported tanks. Finally, it is examined to what extent a simple mechanical model can represent the behaviour of a base isolated tank in case of seismic excitation
Past earthquakes demonstrated the high vulnerability of industrial facilities equipped with complex process technologies leading to serious damage of process equipment and multiple and simultaneous release of hazardous substances. Nonetheless, current standards for seismic design of industrial facilities are considered inadequate to guarantee proper safety conditions against exceptional events entailing loss of containment and related consequences. On these premises, the SPIF project -Seismic Performance of Multi-Component Systems in Special Risk Industrial Facilities- was proposed within the framework of the European H2020 SERA funding scheme. In detail, the objective of the SPIF project is the investigation of the seismic behaviour of a representative industrial multi-storey frame structure equipped with complex process components by means of shaking table tests. Along this main vein and in a performance-based design perspective, the issues investigated in depth are the interaction between a primary moment resisting frame (MRF) steel structure and secondary process components that influence the performance of the whole system; and a proper check of floor spectra predictions. The evaluation of experimental data clearly shows a favourable performance of the MRF structure, some weaknesses of local details due to the interaction between floor crossbeams and process components and, finally, the overconservatism of current design standards w.r.t. floor spectra predictions.
Past earthquakes demonstrated the high vulnerability of industrial facilities equipped with complex process technologies leading to serious damage of the process equipment and multiple and simultaneous release of hazardous substances in industrial facilities. Nevertheless, the design of industrial plants is inadequately described in recent codes and guidelines, as they do not consider the dynamic interaction between the structure and the installations and thus the effect of seismic response of the installations on the response of the structure and vice versa. The current code-based approach for the seismic design of industrial facilities is considered not enough for ensure proper safety conditions against exceptional event entailing loss of content and related consequences. Accordingly, SPIF project (Seismic Performance of Multi- Component Systems in Special Risk Industrial Facilities) was proposed within the framework of the European H2020 - SERA funding scheme (Seismology and Earthquake Engineering Research Infrastructure Alliance for Europe). The objective of the SPIF project is the investigation of the seismic behavior of a representative industrial structure equipped with complex process technology by means of shaking table tests. The test structure is a three-story moment resisting steel frame with vertical and horizontal vessels and cabinets, arranged on the three levels and connected by pipes. The dynamic behavior of the test structure and installations is investigated with and without base isolation. Furthermore, both firmly anchored and isolated components are taken into account to compare their dynamic behavior and interactions with each other. Artificial and synthetic ground motions are applied to study the seismic response at different PGA levels. After each test, dynamic identification measurements are carried out to characterize the system condition. The contribution presents the numerical simulations to calibrate the tests on the prototype, the experimental setup of the investigated structure and installations, selected measurement data and finally describes preliminary experimental results.
A refined substructure technique in the frequency domain is developed, which permits consideration of the interaction effects among adjacent containers through the supporting deformable soil medium. The tank-liquid systems are represented by means of mechanical models, whereas discrete springs and dashpots stand for the soil beneath the foundations. The proposed model is employed to assess the responses of adjacent circular, cylindrical tanks for harmonic and seismic excitations over wide range of tank proportions and soil conditions. The influence of the number, spatial arrangement of the containers and their distance on the overall system's behavior is addressed. The results indicate that the cross-interaction effects can substantially alter the impulsive components of response of each individual element in a tank farm. The degree of this impact is primarily controlled by the tank proportions and the proximity of the predominant natural frequencies of the shell-liquid-soil systems and the input seismic motion. The group effects should be not a priori disregarded, unless the tanks are founded on shallow soil deposit overlying very stiff material or bedrock.