A method for determining the value of wind-induced vibration coefficient in the whole process of cooling tower construction
A wind vibration coefficient, cooling tower technology, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of cooling tower static wind response and wind vibration response inconclusive, unfavorable tower formation, etc. Accurate and effective wind vibration coefficient value, the effect of improving portability and accuracy
Active Publication Date: 2018-07-27
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology
Since the structural system of the cooling tower in the construction state is constantly changing and has not yet formed the final state, there is no conclusion on the impact of the static wind response and wind-induced response of the cooling tower in each construction stage, and there may be a state that is more unfavorable than that of the completed tower.
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[0043] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are explanations of the present invention and the present invention is not limited to the following examples.
[0044] Unless the context clearly states otherwise, the number of elements and components in the present invention can exist in a single form or in multiple forms, and the present invention is not limited thereto. Although the steps in the present invention are arranged with labels, they are not used to limit the order of the steps. Unless the order of the steps is clearly stated or the execution of a certain step requires other steps as a basis, the relative order of the steps can be adjusted. It can be understood that the term "and / or" used herein refers to and covers any and all possible combinations of one or more of the associated listed items.
[0045] Such as figure 1 Shown, a kind of cooling tower construct...
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The invention discloses a value-taking method for a wind vibration coefficient in a whole construction process of a cooling tower. The method is characterized by comprising the following steps of selecting a target cooling tower, building entity models of the cooling tower under N typical construction conditions in a full-size manner and performing large-eddy simulation to obtain structure surface fluctuating wind pressure time histories under the construction conditions; performing wind vibration dynamic response time history analysis under the conditions, and giving wind vibration coefficient values of a cooling tower structure under the N typical construction conditions by taking axial force in a 0-degree meridian direction of a windward side as a target; obtaining the wind vibration coefficient values of the cooling tower structure under the N typical construction conditions through numerical simulation, and performing fitting to give out a value-taking formula for value change of the wind vibration coefficient in the whole construction process of the cooling tower; and according to the proposed fitting formula for the wind vibration coefficient in the whole construction process of the cooling tower, accurately obtaining a wind vibration coefficient value corresponding to each construction template layer of the cooling tower. The method has the advantages of accurate calculation, convenience and practicality, scientificity and rationality, and the like, and is expected to be widely applied to the field of wind-resistant design of cooling tower structures.
Description
technical field [0001] The invention relates to a method for obtaining a value of wind-induced vibration coefficient, in particular to a method for obtaining a value of wind-induced vibration coefficient in the whole process of cooling tower construction. Background technique [0002] Large-scale cooling tower is a towering space thin-shell structure that mainly bears wind loads. It is an important cooling process facility in the industrial field, especially thermal power plants and nuclear power plants. The symmetrical tall tower is the most eye-catching. Wind load is the control load for the structural design of such large cooling towers, and the study of its structural wind resistance performance is the most traditional research content in the field of wind engineering. [0003] With the adjustment of my country's energy structure and the rapid development of power construction, a number of ultra-large cooling towers that exceed the standard height limit and break the wo...
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IPC IPC(8): G06F17/50
CPCG06F30/23
Inventor 柯世堂朱鹏王浩杜凌云余玮余文林徐璐王晓海
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS