Seismic design and analysis of a high-rise self-centering wall building: Case study

Abstract

Post-tensioning self-centering walls are a well-developed and resilient technology. However, despite extensive research, the application of this technology has previously been limited to low-rise buildings. A ten-story self-centering wall building has now been designed and constructed using the state-of-art design methodologies and construction detailing, as described in this paper. The building is designed in accordance with direct displacement-based design methodology, with modification of seismic demand due to relevant issues including higher-mode effects, second order effects, torsional effects, and flexural deformation of wall panels. Wall sections are designed with external energy-dissipating devices of steel dampers, and seismic performance of such designed self-centering walls is evaluated through numerical simulation. It is the first engineering project that uses self-centering walls in a high-rise building. The seismic design procedure of such a high-rise building, using self-centering wall structures, is comprehensively reviewed in this work, and additional proposals are put forward. Description of construction detailing, including slotted beams, flexible wall-to-floor connections, embedded beams, and damper installation, is provided. The demonstration project promotes the concept of seismic resilient structures and contributes to the most appealing city planning strategy of resilient cities at present. The paper could be a reference for industry engineers to promote the self-centering wall systems worldwide.

Graphical abstract

Keywords

self-centering wall / post-tensioned precast concrete wall / seismic resilient structure / high-rise building / seismic design / engineering practice

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Acknowledgements

The authors gratefully acknowledge the financial support from the Distinguished Young Scientists Fund of National Natural Science Foundation of China (Grant No. 52025083), and the technical support of Shanghai CITI-RAISE Construction Group.

Conflict of Interests

The authors declare that they have no conflict of interest.

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