Loading...

Performance Evaluation of Energy Dissipation Systems in Tall Buildings with Outriggers System

Soleimani Nasab, Mohammad Javad | 2017

529 Viewed
  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 51333 (09)
  4. University: Sharif University of Technology
  5. Department: Civil Engineering
  6. Advisor(s): Rahimzadeh Rofuei, Fayaz
  7. Abstract:
  8. In the last few decades, due to population growth and lack of habitable space, the need for construction of taller buildings with more stories has become an important topic. Design of these high-rise structures include different complex tasks in which the finance of the project is the most important parameter. In order to find an efficient and financially feasible design, engineers have always been looking for new approaches and materials. One of the structural systems to be used for tall buildings is the outrigger system. In this system, the surrounding columns are connected to the central core by deep beams or walls to reduce the core forces. In other words, in this method, a new load transfer path for lateral loads is introduced which will reduce the central core load and utilize the surrounding columns.On the other hand in recent years due to progress in energy absorption systems, there has been a number of studies on the possibility of employing these systems in the design of tall buildings. The aim of this thesis is to investigate the usage of energy dissipation tools in high-rise buildings with outrigger systems. For this purpose, a review of recent studies on this topic is carried out to examine their performance in building structures with outrigger systems. Then by examining different damping systems for reducing the seismic response, effectiveness of their application in reducing the structure’s responses is studied. The model under study is a 20-story building which was initially designed as a moment resisting frame. This building was then designed with an outrigger system and damped outrigger system using viscous dampers. Eventually by comparing these two different systems, the effectiveness of the outrigger systems and damped outrigger systems is discussed. The result shows that the mid outrigger level will result in more displacement and drift reduction when one level outrigger is used. In the damped outrigger cases, the number of dissipation system is an important factor and the most dissipation energy happens in a structure with two level outrigger at 7 and 14 stories
  9. Keywords:
  10. Viscous Damper ; Outrigger System ; Energy Dissipation ; High Buildings ; Performance Evaluation ; Optimum Location

 Digital Object List

 Bookmark

No TOC