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Jul 11, 2012

Hangzhou CBD, Tower A: Structural Challenges in the Design of a Tall, Long, and Slender Tower

Publication: Structures Congress 2012

Abstract

The Hangzhou CBD project in Hangzhou, China is a mixed-use development of approximately 400,000 sq.m. Sharing a common basement that extends over the entire site, there are three separate building structures above grade, of which Tower A is the signature building (Figure 1). This 43-story tower, accommodating offices, serviced apartments and an hotel, is 200 m tall with a footprint of 165 m by 33 m. The width of the structure to the outermost columns is typically only 24 m. The architectural design presented many challenges in the design of this nonprescriptive structural system. Two 15 m wide vertical slots through the building height, 75 m and 96 m tall respectively, along with long span spaces in the hotel public areas, required the use of various multi-story high transfer structures. Long span cantilever floor areas up to 22 m in length, supporting extensive areas of hotel program, were integrated into the architectural and structural design. Core wall configurations were optimized to ensure satisfactory structural behavior resulting from the irregular floor areas. The design processes involved in accommodating the architectural features and ensuring that the structural design meets the rigorous standards demanded by the Chinese codes are described. These include an analysis of thermal effects and non-linear seismic analysis.

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Go to Structures Congress 2012
Structures Congress 2012
Pages: 824 - 835

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Published online: Jul 11, 2012

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M. Sarkisian
M.ASCE
Director, Skidmore, Owings & Merrill LLP, San Francisco, CA
N. Mathias
M.ASCE
Associate Director, Skidmore, Owings & Merrill LLP, San Francisco, CA
J. Gordon
M.ASCE
Associate Director, Skidmore, Owings & Merrill LLP, San Francisco, CA
J. Zhang
M.ASCE
Skidmore, Owings & Merrill LLP, San Francisco, CA

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