Spreadsheet solution for the computation of the mean wind speed and turbulence intensity profiles according to the Romanian standard

Elena-Alexandra Chiulan,Anton Anton,Costin-Ioan Coşoiu,Andrei-Mugur Georgescu,M.C Balan,F Bode,C Georgescu,C Croitoru,I Nastase,A Georgescu,A Dogeanu,M Sandu

doi:10.1051/e3sconf/20198503002

Abstract

The presented paper focuses on the computation of the mean wind speed and turbulence intensity profiles for all the cities from Romania. The calculation of both, the mean wind speed profile and the turbulence intensity profile, had as mathematical support the equations presented in the Romanian design standard for wind action CR 1-1-4/2012. The main objective of this paper was to provide a tool for the computation of the two wind action features. This method was based on creating a spreadsheet in Excel with which, in just a few seconds, a user could correctly obtain the two wind characteristics. This Excel dashboard can be used as a teaching material for students as well as input data for structural design engineers in the process of modelling and observing the behaviour of a building excited by wind action on a particular city in Romania.

Highlights

Since increasingly tall buildings have been built around the world, over the last two decades a growing interest has begun to be given to the behaviour of these structures under the influence of the wind [1÷14]
Important information is provided both in terms of dynamic wind pressure through zoning maps made for a given country, terrain categories in a certain country depending on the variable roughness level etc., as well as, calculation methods by which can be determined the wind reference values, the mean wind speed and turbulence intensity profiles with which the atmospheric boundary layer can be characterized for a certain location in a country
We considered as input parameters for the reference value of wind speed, vb, the following characteristics for each location on the territory of Romania: the air density ( = 1, 25kg m3 ) and the reference value of the dynamic wind pressure, qb, from the zoning map

Summary

Introduction

Since increasingly tall buildings have been built around the world, over the last two decades a growing interest has begun to be given to the behaviour of these structures under the influence of the wind [1÷14]. From the most important design codes for wind action can be remained those developed for America [15], Europe [16], Australia [17], China [18], Japan [19], Korea [20] In these standards, important information is provided both in terms of dynamic wind pressure through zoning maps made for a given country, terrain categories in a certain country depending on the variable roughness level etc., as well as, calculation methods by which can be determined the wind reference values, the mean wind speed and turbulence intensity profiles with which the atmospheric boundary layer can be characterized for a certain location in a country. For this code, were considered the parameters that characterize the surface of Romania (dynamic pressure, terrain categories etc.)

Objectives

Results

Conclusion