Recent Advances in Bidirectional Modeling and Structural Control

Satyam Paul,Wen Yu,Xiaoou Li

doi:10.1155/2016/6275307

Abstract

This paper provides an overview of building structure modeling and control under bidirectional seismic waves. It focuses on different types of bidirectional control devices, control strategies, and bidirectional sensors used in structural control systems. This paper also highlights the various issues like system identification techniques, the time-delay in the system, estimation of velocity and position from acceleration signals, and optimal placement of the sensors and control devices. The importance of control devices and its applications to minimize bidirectional vibrations has been illustrated. Finally, the applications of structural control systems in real buildings and their performance have been reviewed.

Highlights

Historic studies expose the fact that several earthquakes have caused severe damage in civil structures all over the world including 1985 Mexico City, 1994 Northridge, 1995 Kobe, 1999 Kocaeli, 2001 Bhuj, 2008 Sichuan, 2008 Chile, and 2012 Emilia
The results revealed that coupled tuned mass dampers (CTMDs) are more effective and robust in controlling coupled lateral and torsional vibrations of asymmetric buildings
Reference [9] presents a new type of control device termed as tuned liquid mass damper (TLMD), to control the torsional response of building structures subjected to bidirectional earthquake waves

Summary

Introduction

Historic studies expose the fact that several earthquakes have caused severe damage in civil structures all over the world including 1985 Mexico City, 1994 Northridge, 1995 Kobe, 1999 Kocaeli, 2001 Bhuj, 2008 Sichuan, 2008 Chile, and 2012 Emilia. Passive and active control systems play an important role in the response reduction of civil engineering structures subjected to strong seismic vibrations. The authors [4] had suggested different types of passive, active, semiactive, and hybrid control systems in their review paper that highlights the importance of control theory in the vibration control of structures. A detailed review on various passive, semiactive, and hybrid control system applied to control the translation-torsion coupled response of structure under bidirectional seismic events are portrayed in sequential manner. A detailed review of a detailed methodology on selection of control criteria, mathematical modeling techniques, and the effectiveness of control device to protect the building structures from bidirectional seismic waves is required to be presented in potential manner. The paper concludes with some of the observations noticed throughout the review

Bidirectional Modeling of Building Structures

Bidirectional Structural Control Devices

Bidirectional Vibration Control

Nonlinear Controllers

Findings

Conclusions and Remarks