Abstract

THIS PAPER PRESENTS A SERIES OF RESULTS WITH RESPECT TO THE SHEAR STRESSES IN THE BASE, TIPPING MOMENT AND TORSION ACTING IN A BUILDING OBTAINED THROUGH AN EXPERIMENTAL WIND TUNNEL STUDY USING THE STANDARD BUILDING PROPOSED BY THE COMMONWEALTH ADVISORY AERONAUTICAL RESEARCH CONCIL (CAARC) AS BUILDING REFERENCE. IN THE EFFORTS DETERMINATION, THE INTERFERENCE OF A NEIGHBORING BUILDING WITH SIMILAR GEOMETRIC CHARACTERISTICS TO THE CAARC WAS SIMULATED, CONSIDERING VARIATIONS OF POSITIONING AND SPACING IN RELATION TO THE REFERENCE BUILDING. IT WAS CONCLUDED THAT THE PRESENCE OF THE NEIGHBORING BUILDING INCREASED THE VALUES OF THE EFFORTS IN THE REFERENCE BUILDING IN A SIGNIFICANT NUMBER OF DIRECTIONS CONSIDERED. IN THE CASE OF THE CONSIDERED DEVIATIONS AND THE PROPOSED PROVISIONS BY THIS STUDY, IT WAS CONCLUDED THAT THE NEIGHBORHOOD FACTOR THAT WOULD CONTEMPLATE THE MAJORITY OF THE RESULTS OBTAINED IN THE TESTS SHOULD INCREASE THE EFFORTS DUE TO THE WIND ACTION BY AT LEAST 60% IN RELATION TO THE VALUES OBTAINED FOR THE REFERENCE BUILDING CONSID-ERED ISOLATED.

Highlights

  • The construction of tall buildings is very common in large urban areas

  • It can be said that these studies began with the evaluation of the effects at the Empire State Building in New York due to the construction of two nearby buildings by Harris 1934

  • Searching to meet the structural and normative conceptions, most studies seek to establish guidelines in order to determine the effects of interference of neighboring buildings on the wind loadings and the responses produced in the buildings to determine the structural parameters to be considered

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Summary

INTRODUCTION

The construction of tall buildings is very common in large urban areas. Among the reasons for this practice, the greater use of urban area is certainly one of the determining factors. In the search for less valuable land, many enterprises are built farther away from the densely built metropoli‐ tan areas In many cases, such buildings are unique in their regions, but with the consequent local development, more buildings of similar size begin to be erected. Searching to meet the structural and normative conceptions, most studies seek to establish guidelines in order to determine the effects of interference of neighboring buildings on the wind loadings and the responses produced in the buildings to determine the structural parameters to be considered. The parameters used in codes and standards determine limiting conditions such as the direction of wind incidence and height of neighboring buildings. For a possible comparison with results of other researchers, the geometry of the buildings followed the same proposal standardized by the Commonwealth Advisory Aeronautical Research Council CAARC

Simulation of the natural wind
Details of model and instrumentation
Definition of the Force, Base Moments and Torsion Coefficients A MANOAIR 500
RESULTS AND DISCUSSIONS
CONCLUSIONS
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