Wyniki wyszukiwania dla: shaking table

• Shaking table experimental study on structural pounding during earthquakes

  Publikacja

  • R. Jankowski

  - Rok 2008

  Artykuł przedstawia wyniki badań eksperymentalnych przeprowadzonych na stole wstrząsowym dotyczące zachowania się kolidujących ze sobą modeli konstrukcji podczas trzęsień ziemi. Wyniki te pokazują, iż zderzenia mogą prowadzić do znacznego wzrostu odpowiedzi konstrukcji, ale mogą mieć również pozytywny wpływ i częściowo wytłumić drgania. Ponadto, wyniki badań wskazują na istotny wpływ rodzaju materiału, z którego wykonane są elementy...

• Estimation of Stresses in a Dry Sand Layer Tested on Shaking Table

  Publikacja

  • A. Sawicki
  • M. Kulczykowski
  • R. Jankowski

  - Archives of Hydro-Engineering and Environmental Mechanics - Rok 2012

  Theoretical analysis of shaking table experiments, simulating earthquake response of a dry sand layer, is presented. The aim of such experiments is to study seismic-induced compaction of soil and resulting settlements. In order to determine the soil compaction, the cyclic stresses and strains should be calculated first. These stresses are caused by the cyclic horizontal acceleration at the base of soil layer, so it is important...

  Pełny tekst do pobrania w portalu

• Diagnosis of Damage in a Steel Tank Model by Shaking Table Harmonic Tests

  Publikacja

  • D. Burkacki
  • R. Jankowski

  - Rok 2013

  Diagnosis of damage in civil engineering structures has recently become an important issue in the safety assessment procedure. Among a number of different approaches, a method of measuring the changes in natural frequencies is one of the most effective indicators of global damage. It has been successfully applied to relatively small. structures, however, the tests on large structures are very difficult and the practical application...

• Diagnosis of Damage in a Steel Tank Model by Shaking Table Harmonic Tests

  Publikacja

  • D. Burkacki
  • R. Jankowski

  - Key Engineering Materials - Rok 2012

  The aim of the present paper is to show the results of the shaking table experimental study concerning the diagnosis of damage in a model of cylindrical steel tank with self-supported roof which is filled with liquid. During the tests, the base of the structure was excited under the harmonic loading with variable frequency. The tests were repeated for different stages of damage, which was introduced in the model by easing the bolts...

  Pełny tekst do pobrania w serwisie zewnętrznym

• Experimental dynamic study on a timber-frame house using shaking table

  Publikacja

  • M. Szczepański
  • R. Jankowski

  - Rok 2011

  The aim of this paper is to show the results of the shaking table experimental study concerning the behaviour of the model of the timber-frame house under earthquake excitation and impact loading. In order to determine the basic dynamic properties of the undamaged structure, the free vibration and the sweep-sine tests were first conducted. Then, the model was excited using the time history record of the El Centro earthquake of...

• Shaking table experimental study on diagnosis of damage and its evaluation in steel structure

  Publikacja

  • R. Jankowski

  - Key Engineering Materials - Rok 2010

  Celem artykułu jest pokazanie wyników badań eksperymentalnych przeprowadzonych na stole sejsmicznym dotyczących identyfikacji uszkodzeń modelu dwukondygnacyjnej konstrukcji stalowej. Uszkodzenie zdefiniowano poprzez spadek sztywności i symulowano poprzez zamianę słupów modelu na elementy o mniejszym przekroju poprzecznym. Wyniki badań pokazują charakterystyczny spadek wartości naturalnych częstotliwości konstrukcji wraz ze wzrostem...

• Shaking table experimental study on the effectiveness of polymer bearings for seismic isolation of structures

  Publikacja

  • A. Banaś
  • R. Jankowski

  - Rok 2010

  Seismic isolation has been recognised to be a very effective way of protecting structures from damage during earthquakes. It allows us to extend the natural period of the structure and therefore avoid resonance with the ground motion. Moreover, by increasing damping in the isolation devices, more energy can be dissipated and thus the structural response can be further reduced. The aim of this paper is to show the results of the...

  Pełny tekst do pobrania w portalu

• Shaking table experimental study on models of steel buildings with different types of joints

  Publikacja

  • T. Jaroszewski
  • M. Miari
  • T. Falborski
  • R. Jankowski

  - MEASUREMENT - Rok 2023

  The aim of this paper is to study the response of models of steel buildings with destroyed and non-destroyed joints. The study was conducted experimentally using the shaking table tests. Two steel models were considered. Several types of joints were taken into account: totally destroyed joints, partially destroyed joints, welded joints and joints stiffened with additional metal. Six ground motions were taken into account. The acceleration...

  Pełny tekst do pobrania w serwisie zewnętrznym

• Shaking table experimental study on damage mechanism of the disconnecting switch under seismic excitation

  Publikacja

  • P. Dembowski
  • R. Jankowski

  - Key Engineering Materials - Rok 2011

  The efficiency of the energetic network is a very import safety issue in the region experienced by the earthquake. High voltage disconnecting switches are important elements of the energetic infrastructure used to separate electric circuits (i.e. during repairs), which should not be damaged remaining fully operational. The aim of the paper is to show the results of the shaking table experimental investigation focused on damage...

• Round Table

  Czasopisma

  ISSN: 0035-8533