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Shaking table model tests on a complex high‐rise building with two towers of different height connected by trusses
Author(s) -
Lu Xilin,
Chen Linzhi,
Zhou Ying,
Huang Zhihua
Publication year - 2009
Publication title -
the structural design of tall and special buildings
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.895
H-Index - 43
eISSN - 1541-7808
pISSN - 1541-7794
DOI - 10.1002/tal.460
Subject(s) - truss , structural engineering , earthquake shaking table , stiffness , stiffening , structural system , engineering , plan (archaeology) , deformation (meteorology) , building model , shear wall , foundation (evidence) , scale model , geology , simulation , geography , paleontology , oceanography , archaeology , aerospace engineering
Abstract The past decades have witnessed a flourish of novel high‐rise structures throughout the world under the requirement of a ceaselessly progressing architectural aesthetics, resulting in a complex plan and elevation of a building. Shanghai International Design Center is such a high‐rise building with two towers of different heights connected by trusses, and the structural system is composed of steel frame, reinforced concrete (RC) core wall and shear walls. The great irregularity in plan and elevation, according to Chinese code, necessitates a detailed study, which usually includes refined structural analysis, scaled structural model test and large size member or joint test. As recommended by the peer review committee, the shaking table tests of the 1:15‐scale structural model were performed. Based on the analysis and shaking table model testing, it was found that the stiffness of the connecting trusses is capable of coordinating the two towers to resist lateral forces jointly even under strong earthquakes. As a result of stiffening action brought by the connecting trusses, whipping‐lash effect in longitudinal direction develops sharply on top storeys. Structural responses at storeys around the connecting trusses vary remarkably due to sudden change in lateral stiffness. Through comparison between tests and numerical analysis, weak positions of the structure are identified, and some corresponding measures for improving the design of this structure are also put forward. Copyright © 2008 John Wiley & Sons, Ltd.