Seismic behavior of MSCSS based on story drift and failure path

Buqiao Fan,Mustapha Abdulhadi,Muhammad Moman,Zhihao Wang,Xun’An Zhang

doi:10.1590/1679-78256787

Abstract

Abstract The Mega-Sub Controlled Structure System (MSCSS) is a new type of seismic structural system. This research aims to find weak members in the structure and better describe the failure state. To achieve this, we enhanced the story drift ratio indicator by combining it with the structural failure path and proposed a new comprehensive indicator that can more accurately describe the seismic behavior of the structure. The new concept of seismic behavior is proposed. The seismic waves used in the analysis in this article are generated by the Hilbert-Huang transformation method. The failure path of the structure under random seismic waves is calculated by the weighted rank-sum ratio method. The comprehensive indicator is checked on the MSCSS with or without lead-rubber bearings and traditional Mega-Sub structure. The calculation results show that the story drift ratio alone cannot fully reflect the damage of structures in earthquakes. The new indicator combined with the failure path can describe the seismic behavior of the MSCSS more comprehensively and can better assist the seismic design and optimization of structures.

Highlights

Earthquakes can damage buildings and cause extensive loss of life and property
The most probable failure path is found by analyzing the structure under multiple seismic waves, calculating the weighted ranksum ratios of investigation sections on each member, and determining the yield order according to the sizes of the weighted rank-sum ratios
It can be seen from the analysis results that Model III, the Mega-Sub Controlled Structure System (MSCSS) with lead rubber bearings (LRBs), has significantly better seismic performance than the other two structure systems

Summary

Introduction

Earthquakes can damage buildings and cause extensive loss of life and property. High-rise buildings are especially susceptible to earthquakes due to their high flexibility and low inherent damping. The isolation layer can be placed at the base (Jangid and Datta 1995; Hwang and Chiou 1996; Jangid 2007; Providakis 2008; Kilar and Koren 2009; Mishra et al 2013; Hessabi et al 2017; Deringol and Bilgin 2018; Kontoni and Farghaly 2019) or between floors) of the building Another strategy is to adopt energyabsorbing systems on buildings to dissipate seismic energy. The tuned mass damper (TMD) system is one of the most widely used systems that has been applied to many actual structures (Sadek et al 1997; Li et al 2011; Soto and Adeli 2013; Elias and Matsagar 2017; Espinoza et al 2018a, 2018b; Zhou et al 2018; Chen et al 2019; Zhang 2019; Snamina and Orkisz 2021)

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