Effects of Perimeter to Core Connectivity on Tall Building Behavior

Besjak, Charles; Biswas, Preetam; Petrov, Georgi I.; Streeter, Matthew; Devin, Austin

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자료유형: 학술저널

저자정보: Besjak, Charles (Skidmore, Owings & Merrill LLP) Biswas, Preetam (Skidmore, Owings & Merrill LLP) Petrov, Georgi I. (Skidmore, Owings & Merrill LLP) Streeter, Matthew (Skidmore, Owings & Merrill LLP) Devin, Austin (Skidmore, Owings & Merrill LLP)

저널정보: 한국초고층도시건축학회 International journal of high-rise buildings International journal of high-rise buildings 제6권 제1호

발행연도: 2017.1

수록면: 1 - 9 (9page)

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The Pertamina Energy Tower (PET) and Manhattan West North Tower (MWNT) are two supertall towers recently designed and engineered by Skidmore, Owings & Merrill (SOM). The structural system for both buildings consists of an interior reinforced concrete core and a perimeter moment frame system, which is primarily structural steel. As is typical for tall towers with both concrete and steel elements, staged construction analysis was performed in order to account for the long term effects of creep and shrinkage, which result in differential shortening between the interior concrete core and steel perimeter frame. The particular design of each tower represents two extremes of behavior; PET has a robust connection between the perimeter and core in the form of three sets of outriggers, while the perimeter columns of MWNT do not reach the ground, but are transferred to the core above the base. This paper will present a comparison of the techniques used during the analysis and construction stages of the design process with the goal of understanding the differences in structural behavior of these two building systems in response to the long term effects of creep and shrinkage. This paper will also discuss the design and construction techniques implemented in order to minimize the differential shortening between the interior and exterior over the lifespan of these towers.

#Skyscraper #Supertall #Construction sequence #Creep #Shrinkage #Differential shortening #Outrigger system #Moment frame

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