International Journal of Civil and Structural Engineering

Volume 4 Issue 3 2014          Pages: 469- 476       << Previous      Next>>

Wind loads on structurally coupled through single bridge tall buildings

Author Information:

S. K. Verma

Associate Professor, Department of Civil Engineering, PEC University of Technology,
Chandigarh, 160012, India

ABSTRACT

Present paper describes the wind tunnel study carried out on rigid models of rectangular shape high rise buildings. The models are tested in the closed circuit wind tunnel having a cross section of 1.3m (width) x0.85m (height), at Civil Engineering Department, Indian Institute of Technology Roorkee, Roorkee. Perspex sheet 5mm in thickness is used for making two building models each with square in plan having size of 50mm×50mm×300mm.The two models are connected by a sky bridge,the connecting bridge is also made of Perspex sheet and is of size 15mmx15mm.and is located at 0.25H,0.5H&0.75H from bottom Pressure points are made on the models to measure the pressure distribution. The study is conducted for 3 incidence angles i.e. 0°, 45°, and 90°. The spacing between the two building models is kept at 50mm.For comparison purposes, an isolated building model size 50mm×50mm×300mm is also tested in the BLWT. Wind pressure coefficients are calculated from the measured values of mean pressure on the model .The length scale of the model is 1:600.  The results of these studies are presented in the present paper. It is observed from the study that negative pressure on opposite faces gets increased considerably when the models are close to each other.   

Keyword:  Tall Building, Mean Wind Pressure, Sky Bridge , Boundary Layer Wind Tunnel

doi: 10.6088/ijcser.201304010044

Copyright: © 2014 by the author(s), licensee Integrated Publishing Association. This is an open-access article distributed under the terms of the Creative Commons Attribution License (3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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