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

Zhou, Zhen; Li, Zhiming; Meng, Shaoping; Wu, Jian

doi:10.1007/s13296-011-2007-1

Cited by 7 publications

(5 citation statements)

References 11 publications

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“…In the conventional vibration response analysis of structures subjected to ABL wind loads, the peak assurance factor [23,33], which is a constant introduced to guarantee safety, is essential for the calculation of the WVC. However, there is still no reliable peak assurance factor for downburst wind loads.…”

Section: Downburst-induced Vibration Coefficient (Dvc)mentioning

confidence: 99%

“…Hence, it is impractical for engineers to evaluate the safety of the whole structure according to the DVC of each node or element. Therefore, borrowing the idea of envelope [23], the following global DVCs are introduced to capture the total responses of all nodes and elements:…”

Section: Global Dvc Of the Structurementioning

confidence: 99%

“…Moreover, likely inspired by the effective application of the windinduced vibration coefficient (WVC) in high-rise structures [20], scholars investigated the WVC of long-span roof structures subjected to ABL wind loads. Research reported by He et al [21], Zhang et al [22] and Zhou et al [23] proved that structural parameters, including geometry, damping ratio, roof mass and boundary conditions, can greatly influence the vibration responses of long-span roof structures. Hence, it is critical to comprehensively consider these parameters in a structural WVC analysis.…”

Section: Introductionmentioning

confidence: 99%

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Downburst-Induced Vibration Coefficient of Long-Span Roof Structures

et al. 2022

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Long-span roof structures are vulnerable to being damaged by downbursts due to the sensitivity of such structures to wind loads. However, there is still no simple and practical method for the downburst-resistant design of such structures to date. Inspired by the wind-induced vibration coefficient (WVC) frequently used by engineers, this paper proposes a downburst-induced vibration coefficient (DVC) to evaluate the response of a roof structure subjected to downbursts. The proposed DVC is defined as the ratio of the total response to the mean response of the structure due to the action of downburst wind loads. The influences of different parameters on the downburst-induced vibration response of a long-span single-layer spherical reticulated structure are first analyzed in detail. Then, using a statistical approach, a design DVC, which can be practically adopted for civil engineers to evaluate the total structural response, is proposed to facilitate the structural downburst-resistant design. With the influences of different structural parameters fully taken into consideration, the design DVCs of displacement and internal force are studied through orthogonal analysis. Finally, regression models of the design DVCs are presented, and their reliability is verified via the application to a case study. The verification results indicate that the proposed regression models of the design DVCs are reliable and can be utilized to simply calculate the structural downburst-induced vibration response. The results obtained can serve as a reference for the downburst-resistant design of long-span roof structures.

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Section: Downburst-induced Vibration Coefficient (Dvc)mentioning

confidence: 99%

Section: Global Dvc Of the Structurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Downburst-Induced Vibration Coefficient of Long-Span Roof Structures

et al. 2022

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“…Studies have been conducted on wind-excited multi-story shear buildings and towers [3][4]. Zhou et al [5] focused on the wind-induced vibration response of pre-stressed double-layer spherical latticed shell structures by adopting time-domain analysis method. Chen et al [6] analyzed the wind-induced responses of long-span bridges by considering coupled multimode effect.…”

Section: Introductionmentioning

confidence: 99%

Wind-Induced Response on Large-Span Structures Based on Pod-Pseudo-Excitation Method

Zhao¹,

Chen²,

Wang³

et al. 2016

Volume 12 Number 1

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This paper proposes a new method to analyze wind-induced response in frequency domain for long-span spatial structures. This method is based on proper orthogonal decomposition (POD) and pseudo-excitation methods, which could significantly reduce computational cost. Based on the POD-pseudo-excitation method and the wind pressure coefficient obtained from a wind tunnel test, ANSYS general purpose software package was developed for the analysis of wind-induced response of YUJIAPU Railway Station Building, which is designed in the form of a conch-shaped single-layer lattice shell. The wind vibration coefficient in wind direction of 0° was obtained. Results obtained by frequency-and time-domain methods were compared. The results were consistent with each other, establishing the foundation for further application of these methods in wind-induced analysis. The relationship between wind-induced response and the frequency of wind load was also determined. This paper provides effective guidance on equivalent wind load.

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“…Uematsu et al 6 investigated the dynamic displacements and member stresses of single-layer lattice roofs in the time domain. Zhou et al 7 assessed the in°uences of rise-span ratio, span, shell thickness, elastic constraint sti®ness and member prestress on the wind-induced response of prestressed double-layered spherical latticed shell structures. The natural frequencies of dome shells usually tend to be densely distributed because three dimensional spatial e®ects to resist external loads are obvious, and many vibration modes have large participation in the wind-induced response.…”

Section: Introductionmentioning

confidence: 99%

Wind-Induced Response and Universal Equivalent Static Wind Loads of Single Layer Reticular Dome Shells

Chen

Yan

Yang

2014

Int. J. Str. Stab. Dyn.

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Wind pressure measurements were carried out for dome roofs with di®erent rise-span ratios (f=L ¼ 1=4; 1=6; 1=8) in a boundary wind tunnel. A parametric study was conducted to investigate the in°uences of wind loading and structural parameters on the wind-induced response and the universal equivalent static wind loads (ESWLs) of single-layer reticular dome shells, including the span, rise-span ratio, roof mass and the mean wind velocity. Results show that the rise-span ratio has a signi¯cant in°uence on the wind pressure distribution of the roof. High suction appears at the top of the roof with a larger rise-span ratio f=L ¼ 1=4, and it appears at the top and leading edge when f/L is 1/6 or 1/8. Many vibration modes should be included to analyze the wind-induced response of dome roof structures, and this makes it very di±cult to analyze the ESWL. The resonant response is larger than the background response. A method to calculate the universal ESWL for the building code is proposed for easy understanding by practicing engineers. Based on the distribution characteristics of the ESWL, simple fundamental vectors are constructed to recalculate the universal ESWL. This method is employed to divide the dome roof into four zones, and it also means that four fundamental vectors are used to evaluate the ESWL. Simpli¯ed expressions of universal ESWL in these four roof zones are proposed for the engineering design. All nodal displacements and structural member stresses under the universal ESWL agree well with actual peak responses.

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

Cited by 7 publications

References 11 publications

Downburst-Induced Vibration Coefficient of Long-Span Roof Structures

Downburst-Induced Vibration Coefficient of Long-Span Roof Structures

Wind-Induced Response on Large-Span Structures Based on Pod-Pseudo-Excitation Method

Wind-Induced Response and Universal Equivalent Static Wind Loads of Single Layer Reticular Dome Shells

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