VIBRATION PROBLEMS OF AN EXAMPLE OF TEMPORARY STEEL GRANDSTAND UNDER HUMAN-INDUCED EXCITATION
Journal Title: Civil and Environmental Engineering Reports - Year 2015, Vol 1, Issue 16
Abstract
Lighter and slender structural members of a typical grandstand leads to a significant reduction in the frequencies, that is why such structures are more easily induced to vibrations. The aim of the present paper is to show the results of the experimental tests and the numerical analyses focused on the behaviour of a part of a typical temporary steel grandstand under dynamic loads. The peak values of accelerations of a steel scaffolding grandstand under human-induced excitation have been determined and compared with the limit values concerning the perception of vibrations by people. The results of the study indicate that the human-induced excitation may induce structural vibrations which substantially exceed the allowable limits.
Authors and Affiliations
Natalia LASOWICZ, Robert JANKOWSKI
POSSIBILITY OF WASTE MFC WITH Ni-Co CATALYST OF FUEL ELECTRODE
One of the problems with microbial fuel cells is a low current density of those energy sources. Nonetheless, it is possible to increase the current density by using the catalyst for fuel electrode (anode) - as long as a...
DEVELOPMENT OF THE EXPERIMENTAL STAND WITH CENTRALLY LOCATED SPECIMEN FOR THE INVESTIGATION OF HEAT AND MOISTURE TRANSPORT PHENOMENA IN POROUS BUILDING MATERIALS
The paper presents development of an experimental stand with centrally located specimen for the investigation of heating and drying processes in porous building materials. Additionally, the paper contains preliminary res...
STRESS EQUATIONS FOR ADHESIVE IN TWODIMENSIONAL ADHESIVELY BONDED JOINTS
The subject of this paper is formulation of shear stress equations for plane twodimensional adhesive layers present in adhesively bonded joints. The adherends are assumed to have the same thickness and be made of an isot...
THE IMPACT OF POTASSIUM MANGANATE (VII) ON THE EFFECTIVENESS OF COAGULATION IN THE REMOVAL OF IRON AND MANGANESE FROM GROUNDWATER WITH AN INCREASED CONTENT OF ORGANIC SUBSTANCES
The article presents the results of studies concerning the impact of the method of Fe(II) ion oxidisation (dissolved oxygen and potassium manganate (VII)) on the effectiveness of coagulation in the removal of iron and ma...
24-HOURS VARIATION OF AMOUNT AND CONTENTS OF WASTEWATER FLOWING TO TREATMENT PLANT IN ZIELONA GÓRA
The article describes daily variations of influents in the aspect of their volume and composition in the sewage treatment plant of Zielona Gora. With a method of direct measurements the flow rate and the concentration of...