Dynamic method for measuring critical buckling load of sway frames

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The critical sway buckling load is the upper limit of the allowed vertical frame loading. This load is defined by the frame configuration, cross-sections of the columns and horizontal beams as well as configuration and stiffness of the connections between them. In known non-destructive methods of determining the side-sway frames critical load an implementation of vertical loading is technically difficult that is especially essential at full-size tests. The value of the applied load is limited also by significant deformation of the frame approaches the critical load value. The paper deals with a new non-destructive method for experimental determining the critical sway buckling load of frames. For ensuring mobility of the frame in the sway mode the vertical loading is carried out by the flexible traction element mounted between the frame beam and fixed base through the loading device. The critical vertical load of the "frame-traction element" combined system is higher than of single frame. This fact allows to load the system with loading that corresponds to critical load of a frame without loss of system stability. Procedure of the experiment includes: determining of free vibration natural frequency of the combined system "frame-traction element" for different tensions of traction element, determining the lateral stiffness of the system, calculation the corresponding stiffness of the frame and its critical load. The accuracy of the method is verified by comparison the experimental and theoretical results.

Original languageEnglish
Title of host publicationProceedings of the 9th International Conference on Structural Dynamics, EURODYN 2014
EditorsA. Cunha, P. Ribeiro, E. Caetano, G. Muller
Pages3851-3856
Number of pages6
ISBN (Electronic)9789727521654
StatePublished - 2014
Event9th International Conference on Structural Dynamics, EURODYN 2014 - Porto, Portugal
Duration: 30 Jun 20142 Jul 2014

Publication series

NameProceedings of the International Conference on Structural Dynamic , EURODYN
Volume2014-January

Conference

Conference9th International Conference on Structural Dynamics, EURODYN 2014
Country/TerritoryPortugal
CityPorto
Period30/06/142/07/14

Keywords

  • Buckling
  • Critical load
  • Dynamic test
  • Sway mode

All Science Journal Classification (ASJC) codes

  • Building and Construction
  • Architecture
  • Civil and Structural Engineering

Fingerprint

Dive into the research topics of 'Dynamic method for measuring critical buckling load of sway frames'. Together they form a unique fingerprint.

Cite this