A REVIEW ONPERAMETRIC STUDY OF TALL R.C.C BUILDING FOR WIND LOAD
Keywords:
- Tall buildings, Wind tunnel testing, Wind effectsAbstract
Recent tall buildings tend to have irregular and unconventional shapes as a prevailing but unavoidable
trend, which is very effective for suppressing across-wind responses. Suppression of a cross-wind responses is a major
factor in safety and habitability design of tall buildings, and the so -called aerodynamic modification method is
comprehensively used. While the effectiveness of aerodynamic modification in reducing wind loads has been widely
reported, there have been few detailed investigations of pressure fluctuations. The tests were performed on two different
models of tall buildings: a regular one with a prismatic shape; an irregular one whose external shape was inspired by
that of Bank of China Tower in Hong Kong. The two models have the same square footprint and height. The two methods
used to measure the wind effects were: the high frequency force balance, which allows to directly measure the global
base reactions (two forces in the plane of the base, the two overturning moments and the torsional moment around the
vertical axis); the synchronous multi-pressure sensing system, which measures the pressure in several points on the
surface of the model, and allows, by means of numerical integration, to estimate both the floor loads and the base
reactions
