www.www.buonovino.com

[B.V.Harsoda]

Natural Floor frequency for Comfort Design of Tall Buildings:-

Natural floor frequency consideration in Tall Building Beams & Slabs design is very important for comfort of users.

Er. T. RangaRajan Sirhas also posted very good articles previously at below Links:-
//www.buonovino.com/rangarajan/15557850-Guide-to-LongSpan-Concrete-Floors.pdf

//www.buonovino.com/rangarajan/FLOOR_VIBRATION/Tips_for_Designers.pdf




Below are my previous Posts regarding Natural Floor Frequency Design:-

//www.buonovino.com/forum/viewtopic.php?t=11555

//www.buonovino.com/forum/viewtopic.php?p=44235


More Discussion In This Subject Requested Please.


Regards,
Er. B. V. Harsoda

[B.V.Harsoda]

Paper to Control Vibration of Tall Building link:-

STOCHASTIC VIBRATION CONTROL OF TALL BUILDING

http://www.iitk.ac.in/nicee/wcee/article/9_vol5_853.pdf


Regards,
Er. B. V. Harsoda

[B.V.Harsoda]

The 14th World Conference on Earthquake Engineering
October 12�17, 2008, Beijing, China
AMBIENT VIBRATION MEASUREMENT AND EARTHQUAKE
RESISTANT BEHAVIOR ANALYSIS ON A TWO�TOWER TALL
BUILDING WITH ENLARGED BASE
Y. Zhou
1
and W.J. Yi
2
1
PhD student, College of Civil Engineering ,Hunan University, Changsha, P.R.China
2
Professor, College of Civil Engineering, Hunan University, Changsha, P.R.China
Email:zhouyun05@gmail.com,hunuyi2006@gmail.com
ABSTRACT :
The two�tower building with enlarged base is a high�rise building form favored by the architect. In this paper the ambient vibration measurement was conducted on a 86�meters�high frame�wall tall building. This building consists of two towers connected by air corridors and an enlarged base. Translational and torsional modes are measured. SATWE module in PKPM software is used to model the structure and the analytical modes are calculated. It is found that due to the eccentricity of the air corridors, each mode shape in the structure has component of torsional vibration, and the higher modes are all torsional modes. In comparison with the experiential formulas used in calculating fundamental period of tall building in different country, it is found that the measured fundamental period of the structure is higher than the results by calculation. It shows that the measured stiffness of the structure is higher than that of the analytical model. At last the designed ground motions are used in the elastic dynamic time history analysis by using Newmark�b method, and the results show that the response forces concentrate on the transfer story and the highest air corridor on the top of the
tower, and the shear forces have greatly changed. Due to the connection of the air corridor, the bending moments and lateral displacements are approximately equal to each other in X and Y direction.

Source Link:-
http://www.iitk.ac.in/nicee/wcee/article/14_12-01-0075.PDF

Regards,
Er. B. V. Harsoda