ANALYTICAL DETERMINATION OF AERODYNAMIC RESISTANCE OF THE SKELETAL TELECOMMUNICATION TOWERS
Journal Title: Structure and Environment - Year 2015, Vol 0, Issue 1
Abstract
Computational determination of aerodynamic resistance for high truss structures like telecommunications towers is the subject of this study. Normalized procedures were presented with an example of an existing structure concerning the total wind coefficient. The results of calculations along with their broad elaboration and interpretation have been presented. Analyses and calculations were conducted for a tower of height equal to 84 metres and of a triangular cross section. The structure is characterized by round full rods as the legs of the tower and hot-rolled angle bars as the bracing. Two computational approaches were applied providing the results for each of them. The achieved results allow for stating that selection of a computational standard procedure should be adequate to an analysed structure and its characteristic features. The information included in the article is particularly useful in case of the determination of carrying capacity of existing tower structures on the basis of Eurocode standards.
Authors and Affiliations
Jacek Szafran
FID SIGNAL INTENSITY IN THE NMR STUDIES OF COHESIVE SOILS AT THE POSITIVE TEMPERATURE RANGE
The purpose of this study was to explain the reason of the FID signal intensity change for soil samples in the positive temperature range (0-40°C). According to the reference data the main cause is the presence of the pa...
DEFECTS IN STRUCTURAL TIMBER
The paper presents the defects that are typically found in structural timber. The model of the so-called flawless timber has been made more precise. Additionally, the impact of defects on timber quality was characterised...
WAY TO REDUCE SUBGRADE IN HIGHWAY CONSTRUCTION
There is formulated the dement of minimum of land works in road construction. For it is suggested new method to construct road pipes and new method of their hydraulic design.
THERMAL INSULATION MATERIALS WITH POROUS STRUCTURE
The raw mix of silica-containing technogenic component – fly ash of thermal power plants – and the methods of preparing waterproof porous thermal insulating materials of extended application on its base according to the...
OVERVIEW OF MODERN ANAEROBIC WASTEWATER TREATMENT METHODS
The paper presents an overview of modern anaerobic wastewater treatment technologies. Characterised reactors for anaerobic wastewater treatment include UASB, ABR, AMBR, ASBR, AnMBR and EGSB reactors. Comparison with aero...