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GHAFFARZADEH, H., ALIZADEH DEHROD, E., AGHAYI PAR, H.. (1394). SEMI-ACTIVE FUZZY CONTROL OF STRUCTURES SUBJECTED TO NEAR-FAULT GROUND MOTIONS HAVING FORWARD DIRECTIVITY AND FLING STEP USING FRICTION DAMPING SYSTEM WITH AMPLIFYING BRACES (FDSAB). , 39(C2), 299-317. doi: 10.22099/ijstc.2015.3136
H. GHAFFARZADEH; E. ALIZADEH DEHROD; H. AGHAYI PAR. "SEMI-ACTIVE FUZZY CONTROL OF STRUCTURES SUBJECTED TO NEAR-FAULT GROUND MOTIONS HAVING FORWARD DIRECTIVITY AND FLING STEP USING FRICTION DAMPING SYSTEM WITH AMPLIFYING BRACES (FDSAB)". , 39, C2, 1394, 299-317. doi: 10.22099/ijstc.2015.3136
GHAFFARZADEH, H., ALIZADEH DEHROD, E., AGHAYI PAR, H.. (1394). 'SEMI-ACTIVE FUZZY CONTROL OF STRUCTURES SUBJECTED TO NEAR-FAULT GROUND MOTIONS HAVING FORWARD DIRECTIVITY AND FLING STEP USING FRICTION DAMPING SYSTEM WITH AMPLIFYING BRACES (FDSAB)', , 39(C2), pp. 299-317. doi: 10.22099/ijstc.2015.3136
GHAFFARZADEH, H., ALIZADEH DEHROD, E., AGHAYI PAR, H.. SEMI-ACTIVE FUZZY CONTROL OF STRUCTURES SUBJECTED TO NEAR-FAULT GROUND MOTIONS HAVING FORWARD DIRECTIVITY AND FLING STEP USING FRICTION DAMPING SYSTEM WITH AMPLIFYING BRACES (FDSAB). , 1394; 39(C2): 299-317. doi: 10.22099/ijstc.2015.3136

SEMI-ACTIVE FUZZY CONTROL OF STRUCTURES SUBJECTED TO NEAR-FAULT GROUND MOTIONS HAVING FORWARD DIRECTIVITY AND FLING STEP USING FRICTION DAMPING SYSTEM WITH AMPLIFYING BRACES (FDSAB)

Iranian Journal of Science and Technology Transactions of Civil Engineering
مقاله 6، دوره 39، C2، آبان 2015، صفحه 299-317    اصل مقاله (1.15 M)
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22099/ijstc.2015.3136
نویسندگان
H. GHAFFARZADEH* 1؛ E. ALIZADEH DEHROD2؛ H. AGHAYI PAR3
1Dept. of Civil Engineering, University of Tabriz, Tabriz, I. R. of Iran
2Dept. of Civil Engineering, Science and Research Branch of Islamic Azad University, Tehran, I. R. of Iran
3Dept. of Civil Engineering, Islamic Azad University of Boukan, West Azerbaijan, I. R. of Iran
چکیده
In this paper, the consequences of well-known characteristics of near-fault ground motions, forward directivity and fling step, on the seismic response control is investigated. An integrated fuzzy rule-based control strategy for building structures incorporated with semi active friction damping system with amplifying braces (FDSAB) is developed. The membership functions and fuzzy rules of fuzzy controller were optimized by Genetic Algorithm (GA). The main purpose of employing a GA is to determine appropriate fuzzy control rules as well to adjust parameters of the membership functions. Numerical study is performed to assess the effects of near-fault ground motions on a building that is equipped with FDSABs. To demonstrate the effectiveness of the fuzzy logic algorithm, it is compared with that of a conventional linear quadratic regulator (LQR) controller, while the uncontrolled system response is used as the base line. Results reveal that the fuzzy logic controller with FDSAB is capable of improving the structural responses and is promising for reducing seismic responses during near-fault earthquakes. It is also shown that, the near-fault earthquakes require much more control force than the far-field earthquakes and result in less response mitigation.
کلیدواژه‌ها
Near-fault ground motions؛ semi-active control؛ FDSAB؛ fuzzy logic controller (FLC)؛ genetic algorithm (GA)؛ linear quadratic regulator (LQR)
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