ROTATION IDENTIFICATION OF SHEAR WALL STRUCTURES BASED ON SELF-SENSING COUPLING BEAMS AND TEST VALIDATION

As an important lateral resisting system of high-rise structures, the coupled shear wall is crucial to the sustainability of post-earthquake performance of buildings. In recent years, the shear wall structural system with replaceable components has been proposed by academia and successfully applied to high-rise building projects at home and abroad. It should be noted that for the vulnerable and high-energy-consuming coupling beams, which are the first line of defense against earthquakes, the rapid diagnosis and replacement after earthquake determine the performance and functional recovery of the structure. In this paper, starting from the structural deformation mechanism of the shear wall with replaceable coupling beams, and based on the self-sensing replaceable coupling beams proposed earlier, a method for identifying the deformation of the shear wall is proposed to monitor and identify its state, e.g., the rotation and the rotation difference between the adjoining wall piers. The accuracy and robustness of the proposed method to identify the wall pier rotation are verified by comparing various types of test measurement techniques through a large-scale shear wall simulation model under dynamic loading test. © 2024 Tsinghua University. All rights reserved.