Wind-induced dynamic behavior and its load estimation of a single-layer latticed dome with a long span

Uematsu, Yasushi; Kuribara, Osamu; Yamada, Motohiko; Sasaki, Akihiro; Hongo, Takeshi

doi:10.1016/s0167-6105(01)00125-8

Cited by 43 publications

(21 citation statements)

References 5 publications

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“…It is found that different reference wind velocities could affect the mean and the standard deviation wind pressure coefficient. This is consistent with that of Taylor [6] and Hongo [9]. It is proposed to carefully choose appropriate reference wind velocities for ABLWT tests on streamlined structures.…”

Section: Reynolds Number Effectsupporting

confidence: 81%

“…This is because the spatial correlation of these pressure fluctuations is rather low and their frequencies are much higher than the dome's natural frequencies. Y. Uematsu et al [9] carried out some basic investigations on wind-induced dynamic behavior and the resultant load estimation of a single-layer lattice dome with a large span. POD is used to generate the wind pressure time history at nodes measured indirectly.…”

Section: List Of Symbolsmentioning

confidence: 99%

See 1 more Smart Citation

Wind Tunnel Tests and Wind-Induced Vibration Analysis of Spherical Domes

Tamura¹

2006

Volume 2 Number 1

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A series of wind pressure measurements on the surfaces of spherical domes are carried out in an atmospheric boundary-layer wind tunnel. The wind pressure distributions on the surfaces of spherical domes including mean and standard deviation are presented.Effects on wind pressure distribution due to wall-height-to-span ratio and rise-to-span ratio, terrain type and Reynolds number are discussed. This study focuses on wind-induced vibration analysis. The Proper Orthogonal Decomposition (POD) technique is adopted to reconstruct the wind pressure field for reticulated spherical domes with different mesh size and shape, and compared with those obtained from a wind-tunnel test model. A new treatment of non-uniformly distributed taps is proposed. Different treatments lead to different optimal problems with different physical meanings. For mode superposition analysis of wind-induced vibration analysis, a new matrix, designated by the authors as a mode-load-correlation matrix, is proposed to determine the special mode that contributes most to the wind effects. This mode contributes most to the background response and significantly to the resonant part. The physical meaning of this matrix is the spatial distribution of structural response. The advantage is that it only takes into account the known variables in the motion equation, without any quasi-static or dynamic assumption. Finally, the application of this matrix to background response is presented.

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Section: Reynolds Number Effectsupporting

confidence: 81%

Section: List Of Symbolsmentioning

confidence: 99%

Wind Tunnel Tests and Wind-Induced Vibration Analysis of Spherical Domes

Tamura¹

2006

Volume 2 Number 1

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“…The calculation complexity of the frequency domain method is much less than that of the time history method, because it is to directly calculate the statistical result of random response in frequency domain. Nevertheless, it is difficult to determine the number of vibration modes accurately for the long span space grid structures (Uematsua et al [9]). For the time history method, the dynamic equilibrium equation is directly integrated according to the adopted wind velocity spectrum, and the nodal displacement, velocity as well as the acceleration at various moments under wind load can be calculated by step-by-step integration (Thai and Kim [10]).…”

Section: Analytical Methods Of Wind-induced Responsementioning

confidence: 99%

Wind-Induced Response Analysis of the Cylindrical Reticulated Mega-Structures

He¹,

Zhou²,

Hai-shun³

2016

Volume 12 Number 1

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ABSTRACT:With the further increase of span of spatial structures, wind load becomes one of the governing factors in structural design. Attention is paid to wind-induced response analysis of spatial grid structures in the recent years. Research on the wind-induced responses of the cylindrical reticulated mega-structure with double-layer plane-plate grid substructures is conducted by time-history method in this paper. The basic distribution laws of the wind-induced member internal forces and nodal displacements of both the main structure and substructures are first analyzed. By detailed parametric analyses, the effect of the geometric parameters, damping ratio, load, boundary condition, and wind velocity on structural wind-induced response is then studied. Finally the structural wind-induced vibration coefficients are analyzed, and their rational values are recommended. All this work will provide theoretical guidance to the wind-resistance design of this kind of structure.

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“…Assuming the wind action to be a stable random variable and statistically formulating the wind load, analytical model and structural response, Chen et al (2000) analyzed comprehensively the dynamic responses for shallow single-layer domes (K6-8). Uematsu et al (2001) applied the proper orthogonal decomposition (POD) technique to the wind pressure data obtained from the wind tunnel experiment, and then the wind-induced dynamic behavior and the resultant load estimation of a single-layer latticed dome with a long span. Using the pressure data obtained from the wind tunnel experiment, investigated the dynamic response of the structural frames of single-layer latticed domes with long spans.…”

Section: Introductionmentioning

confidence: 99%

Wind-Induced vibration responses of prestressed double-layered spherical latticed shells

Zhou

Meng

et al. 2011

Int J Steel Struct

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This paper focuses on the wind-induced vibration response of prestressed double-layered spherical latticed shell (PDSLS) structures by adopting time-domain analysis method. Welch spectrum analysis method is used to make precision evaluation of power spectrum of fluctuating wind speed time history simulated by weighted amplitude wavelet superposition (WAWS) method and linear filtering method of auto-regression (AR) model. Results show that the two methods produce little precision difference, but AR method is far more efficient than WAWS and is more suitable for wind speed simulation of PDSLSs. The effect of various parameters on the wind-induced vibration response of PDSLS structures are comprehensively investigated, including rise-span ratio, span, shell thickness, elastic constraint stiffness, prestress value, with or without cables and cable layout scheme. Results show that rise-span ratio and span are the major factors that affect wind-induced vibration response of PDSLSs. When cables are set, the wind vibration coefficient of nodal vertical displacement becomes smaller and more equally distributed, which demonstrates that PDSLSs are less sensitive to fluctuating wind effect than common latticed shell structures without cables. Finally, based on the envelopment concept and with the maximum dynamic and average wind-induced displacement responses as control indicators, the calculating method for global wind vibration coefficient (GWVC) of PDSLSs is proposed and the value with usual design parameters is given. Meanwhile, when the structure is made static analysis by means of the equivalent static wind load obtained from GWVC, the obtained internal member force response is relatively accordant with the actual response got from time-history analysis, and is a little safer.

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Wind-induced dynamic behavior and its load estimation of a single-layer latticed dome with a long span

Cited by 43 publications

References 5 publications

Wind Tunnel Tests and Wind-Induced Vibration Analysis of Spherical Domes

Wind Tunnel Tests and Wind-Induced Vibration Analysis of Spherical Domes

Wind-Induced Response Analysis of the Cylindrical Reticulated Mega-Structures

Wind-Induced vibration responses of prestressed double-layered spherical latticed shells

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