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RISS 인기검색어
- 검색키워드
- 저자 : Marc L. Levitan (검색결과 4 건)
- 무료
- 기관 내 무료
- 유료
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Wind loads for high-solidity open-frame structures
Amoroso, Samuel D.,Levitan, Marc L. Techno-Press 2011 Wind and Structures, An International Journal (WAS Vol.14 No.1
Open frame structures, such as those commonly found in industrial process facilities, are often densely occupied with process related equipment. This paper presents a method for estimating wind loads for high-solidity open frame structures that differs from current approaches, which accumulate wind load contributions from various individual structure components. The method considers the structure as a porous block of arbitrary plan dimension that is subject to wind from any direction. The proposed method compares favorably with wind tunnel test results for similar structures. The possibility of defining an upper bound force coefficient is also discussed.
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Wind loads for high-solidity open-frame structures
Samuel D. Amoroso,Marc L. Levitan 한국풍공학회 2011 Wind and Structures, An International Journal (WAS Vol.14 No.1
Open frame structures, such as those commonly found in industrial process facilities, are often densely occupied with process related equipment. This paper presents a method for estimating wind loads for high-solidity open frame structures that differs from current approaches, which accumulate wind load contributions from various individual structure components. The method considers the structure as a porous block of arbitrary plan dimension that is subject to wind from any direction. The proposed method compares favorably with wind tunnel test results for similar structures. The possibility of defining an upper bound force coefficient is also discussed.
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A method for nonlinear aerostatic stability analysis of long-span suspension bridges under yaw wind
Wen-Ming Zhang,Yao-Jun Ge,Marc L. Levitan 한국풍공학회 2013 Wind and Structures, An International Journal (WAS Vol.17 No.5
By using the nonlinear aerostatic stability theory together with the method of mean wind decomposition, a method for nonlinear aerostatic stability analysis is proposed for long-span suspension bridges under yaw wind. A corresponding program is developed considering static wind load nonlinearity and structural nonlinearity. Taking a suspension bridge with three towers and double main spans as an example, the full range aerostatic instability is analyzed under wind at different attack angles and yaw angles. The results indicate that the lowest critical wind speed of aerostatic instability is gained when the initial yaw angle is greater than 0°, which suggests that perhaps yaw wind poses a disadvantage to the aerostatic stability of a long span suspension bridge. The results also show that the main span in upstream goes into instability first, and the reason for this phenomenon is discussed.
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A method for nonlinear aerostatic stability analysis of long-span suspension bridges under yaw wind
Zhang, Wen-Ming,Ge, Yao-Jun,Levitan, Marc L. Techno-Press 2013 Wind and Structures, An International Journal (WAS Vol.17 No.5
By using the nonlinear aerostatic stability theory together with the method of mean wind decomposition, a method for nonlinear aerostatic stability analysis is proposed for long-span suspension bridges under yaw wind. A corresponding program is developed considering static wind load nonlinearity and structural nonlinearity. Taking a suspension bridge with three towers and double main spans as an example, the full range aerostatic instability is analyzed under wind at different attack angles and yaw angles. The results indicate that the lowest critical wind speed of aerostatic instability is gained when the initial yaw angle is greater than $0^{\circ}$, which suggests that perhaps yaw wind poses a disadvantage to the aerostatic stability of a long span suspension bridge. The results also show that the main span in upstream goes into instability first, and the reason for this phenomenon is discussed.
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