10-05-2016, 10:05 PM
provide me sufficient data regarding stability of high rise buildings
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ppt on stability on high rise buildings
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provide me sufficient data regarding stability of high rise buildings
12-05-2016, 10:49 AM
Abstract
Structural systems for tall buildings have undergone a dramatic evolution throughout the previous decade and into the 2000s. Developments in structural system form and organization have historically been realized as a response to as well as an momentum toward emerging architectural trends in high-rise building design. Traditionally, the primary concern of the structural engineer designing a building has been the provision of a structurally safe and adequate system to support the vertical loads. This is understandable since the vertical load-resisting capability of a building is its reason for existence. However, this is only true for the buildings involved if they were not too high, were not in seismic zones, or were constructed with adequate built-in safety margins in the form of substantial nonstructural masonry walls and partitions. For all the high-rise buildings, it is essential to take into account the lateral forces such as wind loads, seismic inertia-forces, blast loads, etc. to ensure the stability of buildings.
Structural systems for tall buildings have undergone a dramatic evolution throughout the previous decade and into the 2000s. Developments in structural system form and organization have historically been realized as a response to as well as an momentum toward emerging architectural trends in high-rise building design. Traditionally, the primary concern of the structural engineer designing a building has been the provision of a structurally safe and adequate system to support the vertical loads. This is understandable since the vertical load-resisting capability of a building is its reason for existence. However, this is only true for the buildings involved if they were not too high, were not in seismic zones, or were constructed with adequate built-in safety margins in the form of substantial nonstructural masonry walls and partitions. For all the high-rise buildings, it is essential to take into account the lateral forces such as wind loads, seismic inertia-forces, blast loads, etc. to ensure the stability of buildings.
13-07-2017, 09:19 PM
15-07-2017, 02:28 PM
High buildings with core insulation are being built in Japan. The insulation of the base is obtained in high-rise buildings by not only the earthquake load, but also the wind load. In the case of the base insulation obtained by the seismic load, the input energy to the structures decreases because the natural frequency of the structure becomes smaller and moves away from the frequency at the peak of the power spectrum of the earthquake excitation . However, in the case of the base insulation obtained by the wind load, the input energy to the structures increases because the natural frequency of the structure is reduced and closed at the frequency at the peak of the power spectrum of the excitation of the wind. In addition, the risk of resonance from wind loading is greater than the building with the same configuration and without the insulation of the base. It is therefore necessary to examine the aerodynamic stability of high-rise buildings with the insulation of the base. However, previous studies do not give us an efficient technique to simulate the aerodynamic stability of buildings with basic insulation. One of the authors has proposed a new approach to simulate aerodynamic oscillation in a wind tunnel. The approach was called hybrid aerodynamic vibration technique or HAT. Like the modified approach, the author has also proposed the new hybrid aerodynamic vibration technique, which is referred to as NHAT.
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