文档介绍：Tongji University Master of Engineering Abstract
Abstract
With the application of high-strength materials and the increase of the total
height of construction, the stiffness and damping of the high-rise buildings declining,
the swing of the structure under wind loads is increasing, which making more and
more difficult to meet the requirements of fort. This paper as an example of a
high-rise structure in Dalian, conduct the wind fort control research
based on wind tunnel tests.
This paper introduces the wind tunnel test overview, and simulates the class of A,
B wind fields. This paper also stimulates the average wind speed, turbulence intensity
profiles and pulsating wind power spectral density function values. The Simulated
classes of A, B landforms turbulence Power Spectrum is in good agreement of the
target wind speed power spectrum. The each layer wind load time-history of the super
high-rise structure is calculated based on the results of wind tunnel tests.
Using and PKPM2010 create a three-dimensional model each, and
conduct modal analysis, pare the results of the two pieces of analytical
software. Using ETABS to conduct the wind vibration analysis, we can obtain that the
top-layer acceleration response of X-direction in the 225-degree wind angle is the
largest, which also beyond specification requires. This paper mainly uses three
methods to control high-rise wind fort: The first method is using tuned
mass damper to control; the second method is using viscoelastic dampers to control;
method viscoelastic dampers control; the third method, setting the fire water tank as
the tuned mass damper, is using the above two methods to conduct hybrid control.
Then optimize the parameters for each method.
From the analysis, it can be seen that the above three methods are able to meet
the requirements fort. However, only using the viscoelastic damper to control
fort of wind-induced vibr