Optimal performance-based design of non-linear stochastic dynamical RC structures subject to stationary wind excitation

被引:59
作者
Beck, Andre T. [1 ]
Kougioumtzoglou, Ioannis A. [2 ]
dos Santos, Ketson R. M. [1 ]
机构
[1] Univ Sao Paulo, Sao Carlos Sch Engn, Dept Struct Engn, BR-13566590 Sao Carlos, SP, Brazil
[2] Univ Liverpool, Inst Risk & Uncertainty, Liverpool L69 3GH, Merseyside, England
基金
巴西圣保罗研究基金会;
关键词
Performance based engineering; Non-linear analysis; Stochastic dynamics; Reliability analysis; Structural optimization; RELIABILITY-BASED DESIGN; MEAN RANDOM VIBRATION; RISK-ASSESSMENT; OPTIMAL INSPECTION; ONSHORE PIPELINES; MASS DAMPERS; OPTIMIZATION; SYSTEMS; LINEARIZATION;
D O I
10.1016/j.engstruct.2014.07.047
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Performance-based design, or performance-based engineering (PBE), is currently well accepted as a proper methodology for assessing risk and designing facilities which can be subject to continuous levels of damage caused by.extreme responses under various hazards of varying magnitudes. However, the difficulties in assessing probabilities associated with different hazard and performance levels, especially when nonlinearity is considered in dynamically excited structural systems, have been a limiting factor for incorporating PBE into design optimization. This paper advances the state-of-the-art by incorporating PBE into the optimal design of non-linear/hysteretic stochastic dynamical systems. The approach combines a statistical linearization technique with time-variant reliability analysis concepts, in order to formulate a total expected life-cycle cost optimization problem. As a numerical example, reinforced concrete buildings modeled as MDOF Bouc-Wen hysteretic systems subjected to wind excitation are studied. Optimal transversal stiffness of the buildings columns are obtained both for the linear and the nonlinear cases, as well as for various design life values. Optimal stiffness values determined herein consider the initial costs but also expected losses over the lifetime of the structure, for several wind hazard magnitudes and displacement response levels of the structure. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码:145 / 153
页数:9
相关论文
共 51 条
[1]  
[Anonymous], 1996, FEMA273
[2]  
[Anonymous], THESIS ROME
[3]  
[Anonymous], 2003, RANDOM VIBRATION STA
[4]  
[Anonymous], P PCEE AUCKL NZ
[5]  
[Anonymous], P 2007 EARTHQ ENG S
[6]  
ATC-40, 1996, SEISMIC EVALUATION R
[7]   Performance-Based Design in risk assessment and reduction [J].
Augusti, Giuliano ;
Ciampoli, Marcello .
PROBABILISTIC ENGINEERING MECHANICS, 2008, 23 (04) :496-508
[8]   NONZERO MEAN RANDOM VIBRATION OF HYSTERETIC SYSTEMS [J].
BABER, TT .
JOURNAL OF ENGINEERING MECHANICS-ASCE, 1984, 110 (07) :1036-1049
[9]   NONZERO MEAN RANDOM VIBRATION OF HYSTERETIC FRAMES [J].
BABER, TT .
COMPUTERS & STRUCTURES, 1986, 23 (02) :265-277
[10]  
Barbato M., 2011, Journal of Engineering Mechanics, V137, P371, DOI DOI 10.1061/(ASCE)EM.1943-7889.0000238