Results 221 to 230 of about 32,286 (246)

Numerical research of a super-large cooling tower subjected to accidental loads

Nuclear Engineering and Design, 2014
Abstract With the continued development of nuclear power plants, more and more super-large cooling towers are to be built in China and around the world. For the safe operation of nuclear power plants, research work has been done on the causes of collapse of cooling towers, collapse modes and the secondary disasters caused by the collapse of cooling ...
Yi Li, Feng Lin, Xianglin Gu, Xiaoqin Lu
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MULTIPLE LOADING EFFECTS ON WIND-INDUCED STATIC PERFORMANCE OF SUPER-LARGE COOLING TOWERS

International Journal of Structural Stability and Dynamics, 2013
Currently, four grouped 177 m super-large cooling towers, i.e. column-supported hyperboloidal shells, are to be constructed in a typical electric power plant in Southeast China. To this end, simultaneous pressure measurements on 1:200 rigid tower models are carried out in an atmospheric boundary layer (ABL) wind tunnel, aimed at accurately obtaining ...
X. X. CHENG, L. ZHAO, Y. J. GE
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A new methodology for analysis of equivalent static wind loads on super-large cooling towers

Journal of Wind Engineering and Industrial Aerodynamics, 2012
Abstract For tall buildings and typical long-span spatial structures, the background and resonant components of wind-induced fluctuating response should be taken into account by different calculation theories. The total fluctuating response is obtained through the square root of sum of squares (hereafter referred to as SRSS) combination (hereafter ...
S.T. Ke, Y.J. Ge, L. Zhao, Y. Tamura
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Dynamic Reliability of Super Large Cooling Tower Structure under a Stationary Seismic Load

Advanced Materials Research, 2011
This paper analyzed the dynamic characteristics and the random seismic response of a super large hyperbolic cooling tower using 3-D FEM method. The results showed that the tower was very flexible. And it’s meridian direction axial force RMS was relatively bigger in the range of 40m-120m high, the maximum value of annular axial force RMS was at the top ...
Yan Zhang, Guo Liang Bai, Yan Zhou Xu
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The influence of self-excited forces on wind loads and wind effects for super-large cooling towers

Journal of Wind Engineering and Industrial Aerodynamics, 2014
Abstract The self-excited force induced by the interaction between the structure and airflow has been technically ignored in previous studies conducted on wind loads and wind effects for super-large cooling towers. Moreover, no criteria could be used for qualitative and quantitative studies of the effects resulting from the self-excited force.
S.T. Ke, Y.J. Ge
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Extreme and spectrum characteristics of wind loads on super-large cooling tower under different four-tower combinations

Advances in Structural Engineering, 2018
The wind loads distribution on the super-large cooling tower under the interference effect of tower group is very complicated. Particularly, energy distribution of fluctuation wind loads and extreme model is difficult to be predicted. However, accurate calculations of these two factors are the most direct ways for analysis of wind resistance dynamics ...
Hao Wang, Shitang Ke, Yaojun Ge, Yukio Tamura   +3 more
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Random buckling bearing capacity of super-large cooling towers considering stochastic material properties and wind loads

Probabilistic Engineering Mechanics, 2013
Abstract Based on the probability density evolution method (PDEM) and corresponding numerical algorithms, the random buckling bearing capacity (RBBC) is introduced in the present work. By taking the random material properties and wind loads into account, the statistical properties of RBBC are analyzed and then the reliability for a super-large ...
Yazhou Xu, Guoliang Bai
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Mechanical Analysis of a Super-large-diameter Shield Tailskin Under Deep Ground Load

2018
The deformation and stress of a super-large-diameter shield tailskin are analyzed in this paper. Four kinds of structure analysis models, i.e. the perfect solid shell model, the defected solid shell model, the perfect hollow-layered shell model, and the defected hollow-layered shell model are formed to study the effects of initial geometrical defects ...
Chen Zhou, Xuehui Zhang, Yun Bai
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Numerical simulation research on response characteristics of surrounding rock for deep super-large section chamber under dynamic and static combined loading condition

Journal of Central South University, 2020
The stability control of surrounding rock for large or super-large section chamber is a difficult technical problem in deep mining condition. Based on the in-site geological conditions of Longgu coal mine, this paper used the dynamic module of FLAC3D to study the response characteristics of deep super-large section chamber under dynamic and static ...
De-yuan Fan, Xue-sheng Liu, Yun-liang Tan, Shi-lin Song, Jian-guo Ning, Qing Ma   +5 more
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Interference effect and the working mechanism of wind loads in super-large cooling towers under typical four-tower arrangements

Journal of Wind Engineering and Industrial Aerodynamics, 2017
Abstract Group tower-related interference is one of the major causes of wind-induced damage of large cooling towers. The four-tower arrangements are the most common forms of the layout of group towers. In engineering practice, five arrangements are generally used, namely, single row, rectangular, rhombic, L-shaped, and oblique L-shaped.
Shitang Ke, Hao Wang, Yaojun Ge
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