Shaking Table Model Test and Seismic Performance Analysis of a High‐Rise RC Shear Wall Structure

Abstract

A building developed by Wuhan Shimao Group in Wuhan, China, is a high-rise residence with 56 stories near the Yangtze River. The building is a reinforced concrete structure, featuring with a nonregular T-type plane and a height 179.6 m, which is out of the restrictions specified by the China Technical Specification for Concrete Structures of Tall Building (JGJ3-2010). To investigate its seismic performance, a shaking table test with a 1/30 scale model is carried out in Structural Laboratory in Wuhan University of Technology. The dynamic characteristics and the responses of the model subject to different seismic intensities are investigated via the analyzing of shaking table test data and the observed cracking pattern of the scaled model. Finite element analysis of the shaking table model is also established, and the results are coincident well with the test. An autoregressive method is also presented to identify the damage of the structure after suffering from different waves, and the results coincide well with the test and numerical simulation. The shaking table model test, numerical analysis, and damage identification prove that this building is well designed and can be safely put into use. Suggestions and measures to improve the seismic performance of structures are also presented.

Structural Damage Identification Based on AR Model with Additive Noises Using an Improved TLS Solution

“…Besides, the damage degrees and their distribution obtained by the proposed method match well with the corresponding results in Ref. [32], based on analysis of frequency shift and peak displacement/acceleration peak.…”

“…In this section, damage levels of a high-rise residential building model due to seismic excitation with increasing intensities are identified using the proposed method qualitatively. Pertinent identification factors (IF) calculated by the proposed and the classical LS method are compared [32].…”

“…It is seen from pertinent results in Ref. [32] that damage level of the building increases significantly with earthquake intensities. Specifically, first, almost no damage occurred after applying the Frequent 6 excitations, indicating the structure remained in the elastic stage.…”

“…For simplicity, the experimental results are not introduced here; see Ref. [32] for more details. The acceleration responses of the white noise excitations are used for damage identification in the next section.…”

Embankment Seismic Fragility Assessment under the Near‐Fault Pulse‐like Ground Motions by Applying the Response Surface Method

“…e near-fault ground motions with long-period pulses have much more energies input to long-span linear structures than the far-fault ground motions. erefore, researches on the fragility assessment of structures such as embankments under the near-fault pulse-like ground motions are of great significance for performance-based seismic design [7][8][9].…”