The Application of Response Control Design Using Middle-Story Isolation System to High-Rise ...

The Application of Response Control Design Using Middle-Story Isolation System to High-Rise ...

15 Pages · 2002 · 2.27 MB · English

Thus, in order to build flexible structure, reduction of seismic response shear force is indispensable, and it is common to adopt a certain seismic response control system. In the case of this building, because there is not structural frame suitable for arranging the response control element on eac

The Application of Response Control Design Using Middle-Story Isolation System to High-Rise ... free download

13 th World Conference on Earthquake Engineering Vancouver, BC, Canada August 16, 2004 Paper No 3457 THE APPLICATION OF RESPONSE CONTROL DESIGN USING MIDDLESTORY ISOLATION SYSTEM TO HIGHRISE BUILDING Toshiyuki SUEOKA 1 , Shingo TORII 1 and Yasuhiro TSUNEKI 1 SUMMARY This report, represent the characteristic of the highrise building with middlestory isolation interface The total height of this building is 120 meters (total number of story is 25) The construction of this building has been continued from March 1, 2002 And it will be finished until July 2004 First, The outline and design concept of the above building is represented The building comprises office space at the upper floors (number of floor is 14) and a hotel space at lower floors And especially, the large glass atrium is supplied at the lower floors (the ration of open space area is about 50%) On the principal feature of structural design, the following structural system is represented At mid building (approximately 50 meters height, between 11floor and 12floor), the seismic isolation interface is applied to this building Secondly, the effect of the above isolation system and structural design concept are discussed There are few restrictions involved in planning seismic isolation interface at mid building level On the other hands, the response of the building to earthquakes is greatly reduced by introducing the seismic isolation interface Typically without the seismic isolation interface the upper and lower structures would behave in a linear manner during a strong earthquake and be at greater risk for extensive physical building damage Utilizing this system allowed greater freedom and ease of building design At last, with the above isolation system, the feature of the response of building to earthquake is described The above isolation interface controls seismic vibration by utilizing a concentrated energy absorption mechanism In this system the vibration energy of the earthquake is changed into plastic hysteretic energy in the damper of the seismic isolation interface The seismic response of this building based on dynamic numerical analysis is represented And the influence that the vertical position of isolation interface is applied at middle story is showed Especially, the deformation mechanism and the energy absorption in the isolation interface are investigated INTRODUCTION One of the characteristics of the seismic isolation structure is that the response shear force of the building during an earthquake is less than that of regular structure without seismic isolation system 1 Nikken Sekkei Ltd, Tokyo , 1128565 , Japan Because the natural period for vibration of the structure is mainly decided by the natural period of isolation interface, the natural period of building extend In the case of middle story isolation, it is not an exception, either With extension of natural period, the seismic response shear force is reduced This is called the isolation effect Another characteristic is that majority of energy acting on the building during an earthquake is absorbed by the damper disposed at the seismic isolation interface Therefore, it is able to say that the isolated structure is the seismic response control structure with concentration from the damper This structure is distinguished from ordinary passive seismic control structures by dispersion of damper on any stories The structure described in this report, the name of building is “Shiodome Sumitomo Building”, was planned around absorption of

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