Efficient wind fragility analysis of RC high rise building through metamodelling

다국어 초록 (Multilingual Abstract)

This paper deals with wind fragility and risk analysis of high rise buildings subjected to stochastic wind load. Conventionally, such problems are dealt in full Monte Carlo Simulation framework, which requires extensive computational time. Thus, to make the procedure computationally efficient, application of metamodelling technique in fragility analysis is explored in the present study. Since, accuracy by the conventional Least Squares Method (LSM) based metamodelling is often challenged, an efficient Moving Least Squares Method based adaptive metamodelling technique is proposed for wind fragility analysis. In doing so, artificial time history of wind load is generated by three wind field models: i.e., a simple one based on alongwind component of wind speed; a more detailed one considering coherence and wind directionality effect, and a third one considering nonstationary effect of mean wind. The results show that the proposed approach is more accurate than the conventional LSM based metamodelling approach when compared to full simulation approach as reference. At the same time, the proposed approach drastically reduces computational time in comparison to the full simulation approach. The results by the three wind field models are compared. The importance of non-linear structural analysis in fragility evaluation has been also demonstrated.

참고문헌 (Reference)

1 Yongbo Peng, "Wind-induced fragility assessment of urban trees with structural uncertainties" 한국풍공학회 26 (26): 45-56, 2018

2 Sarkar, A., "Wind climate modelling using weibull and extreme value distribution" 3 (3): 100-106, 2011

3 Simiu, E., "Wind Effects on Structures: An Introduction to Wind Engineering" John Wiley & Sons 1986

4 Arnab Sarkar, "Weibull Model for Wind Speed Data Analysis of Different Locations in India" 대한토목학회 21 (21): 2764-2776, 2017

5 Gur, S., "Vulnerability assessment of container cranes under stochastic wind loading" 12 : 1511-1530, 2014

6 Chen, J., "Unified Non-stationary mathematical model for near-ground surface strong winds" 2012

7 Mander, J.B., "Theoretical stressstrain model for confined concrete" 114 (114): 1804-1826, 1988

8 Brigham, E.O., "The Fast Fourier Transform and its Applications" Prentice-Hall 1988

9 Hjelmfelt, M.R., "Structure and life circle of microburst outflows observed in Colorado" 27 : 900-927, 1988

10 Taflanidis, A.A., "Stochastic sampling using moving least squares response surface methodologies" 28 : 216-224, 2012

11 Kaimal, J.C., "Spectral Characteristics of surface layer turbulence" 98 : 563-589, 1972

12 Harris, R.I., "Some further thoughts on the spectrum of gustiness in strong winds" 33 : 461-477, 1990

13 Popescu, R., "Simulation of homogeneous non-Gaussian stochastic vector fields" 13 (13): 1-13, 1998

14 Ghosh, S., "Seismic reliability analysis in the framework of metamodelling based Monte Carlo Simulation, modeling and simulation techniques in structural engineering" IGI Global 192-, 2016

15 Das, N.K., "Safety analysis of steel building frame under dynamic load" Texas Tech University 1988

16 "SAP 2000NL"

17 Bhattacharjya, S., "Robust optimization of structures subjected to stochastic earthquake with limited information on system parameter uncertainty" 43 (43): 1311-1330, 2011

18 Venanzi, I., "Robust and reliable optimization of wind-excited cable-stayed masts" 147 : 368-379, 2015

19 Myers, R.H., "Response Surface Methodology: Process and Product in Optimization Using Designed Experiments" John Wiley & Sons, Inc. 1995

20 Song, C.Y., "Reliability-based design optimization of an FPSO riser support using moving least square response surface meta models" 38 : 304-318, 2011

21 Konthesingha, K.M.C., "Reliability based vulnerability modelling of metal-clad industrial buildings to extreme wind loading for cyclonic regions" 147 : 176-185, 2015

22 Goswami, S., "Reliability Analysis of Structures by iterative improved response surface method" 60 : 56-66, 2016

23 Morgan, E.C., "Probability distributions for offshore wind speeds" 52 : 15-26, 2011

24 Spanos, P.T.D., "Numerical solutions of a van der pol oscillator" 6 (6): 135-145, 1980

25 Taflanidis, A.A., "Natural hazard probabilistic risk assessment through surrogate modeling;Multi-hazard Approaches to Civil Infrastructure Engineering" Springer International Publishing 59-86, 2016

26 MATLAB, "Natick, Massachusetts, United States"

27 Lu, Q., "Moving least square method for reliability assessment of rock tunnel excavation considering ground-support interactions" 84 : 88-100, 2017

28 "IS: 875(Part 3)-2015, Indian Standard Code of practice for design Loads (other than Earthquake) for Building and structures, Part 3: Wind Loads"

29 "IS: 456, Plain and reinforced concrete - Code of practice"

30 Kwon, D.K., "Gust-front factor: New framework for wind load effects on structures" 135 (135): 717-732, 2009

31 "FEMA 356, Prestandard and commentary for the Seismic Rehabilitation of Buildings"

32 Kim, C., "Efficient response surface modeling by using moving least-square method and sensitivity" 43 (43): 2404-2411, 2005

33 Zhang, L., "Dynamic response and reliability analysis of tall buildings subject to wind loading" 96 (96): 25-40, 2008

34 Repetto, M.P., "Directional wind-induced fatigue of slender vertical structures" 130 (130): 1032-1040, 2004

35 Shinozuka, M., "Digital Simulation of Random Processes and Its Applications" 25 : 111-128, 1972

36 Ellingwood, B.R., "Development of probability based load criterion for American National Standard A.58, NBS Special Publication 577"

37 Fang, K.T., "Constructions of uniform designs by using resolvable packings and coverings" 274 : 25-40, 2004

38 Ambrosini, R.D., "Analysis of structure subjected to random wind loading by simulation in the frequency domain" 17 : 233-239, 2002

39 Gupta, S., "An improved response surface method for the determination of failure probability and importance measures" 26 : 123-139, 2004

40 Holmes, J.D., "An empirical model of a downburst" 22 : 1167-1172, 2000

41 Kang, S., "An efficient response surface Method using moving least squares approximations for structural reliability analysis" 25 : 365-371, 2010

42 Andrea Spagnoli, "Along-wind simplified analysis of wind turbines through a coupled blade-tower model" 한국풍공학회 17 (17): 589-608, 2013

43 "ANSI A58.1, Design Loads For Buildings And Other Structures, Minimum"

44 Chen, L., "A deterministic-stochastic hybrid model of downbursts and its impact on a cantilevered structure" 26 : 619-629, 2004

45 Chen, J., "A comparative study of stationary and non-stationary wind models using field measurements" 122 : 105-121, 2007

46 Marra, A.S., "A Monte Carlo based method for the dynamic fragility analysis of tall buildings under turbulent wind loading" 33 : 410-420, 2011