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Method for valuing construction period wind load of ultra-large cooling tower

A wind load and cooling tower technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problem of separating the final working conditions of uncooled towers

Inactive Publication Date: 2013-03-13
CHINA ENERGY ENG GRP GUANGDONG ELECTRIC POWER DESIGN INST CO LTD
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Problems solved by technology

[0006] At present, the value of the design wind load during the construction period of domestic cooling towers is consistent with the design reference period, and the value of the wind load during the construction period is not distinguished from the final working condition of the cooling tower.

Method used

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  • Method for valuing construction period wind load of ultra-large cooling tower
  • Method for valuing construction period wind load of ultra-large cooling tower
  • Method for valuing construction period wind load of ultra-large cooling tower

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Embodiment Construction

[0117] The method for obtaining the value of the wind load during the construction period of the ultra-large cooling tower involved in this embodiment includes the following steps:

[0118] 1) Establish a wind load stationary binomial stochastic process model;

[0119] 2) According to the characteristics of the wind load stationary binomial stochastic process model, use the period analysis method of structural reliability to establish the relationship between the structural design reference period and each period in between, and the construction period and the reliability relationship between each period in between, forming the period Relational expressions and reliability relational expressions;

[0120] 3) Starting from the fact that the structural resistance in the construction period is proportional to the design reference period, by solving the relational expression in step 2), the ratio of the standard value of wind load during the construction period to the standard val...

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Abstract

The invention relates to a method for valuing the construction period wind load of an ultra-large cooling tower. The method is characterized by comprising the following steps of: (1) establishing a structural design reference period, a time interval relation among different time intervals in the structural design reference period, a construction period, and a reliability relation among different time intervals of the construction period respectively by taking a reliability theory as a theoretical foundation with a time interval analysis method of structural reliability to form a time interval relation expression and a reliability relation expression; (2) resolving the relation expressions in the step (1) to obtain the proportion of a construction period wind load standard value to a design reference period wind load standard value; and (3) resolving a construction period wind load factor according to the proportion in the step (2). The valuing standard problem of the construction period design wind load of a tower is researched on the premise of the same reliability in the construction period of a cooling tower and the design reference period by taking the basic theory of a structural reliability design as a foundation, the determination of the design wind load in the construction period of the cooling tower is facilitated, and the method plays a role in deciding the stability and manufacturing cost of the cooling tower in the construction period.

Description

technical field [0001] The invention relates to a super-large cooling tower, in particular to a method for obtaining wind load values ​​during the construction period of a super-large cooling tower. The invention belongs to the technical field of construction of a nuclear power plant of an electric power system. Background technique [0002] Super-large cooling towers are key structures in nuclear power plants using secondary circulation cooling systems. At present, there is no experience in the construction of cooling towers for nuclear power plants in the world. According to the existing industry knowledge, the cooling tower of a 1000MW class nuclear power plant generally needs to reach a height of more than 200m and a zero-meter diameter of more than 180m. A building of this level is one of the structures with the largest geometric volume of a single nuclear power plant. Therefore, the structural safety of the ultra-large cooling tower has a crucial impact on the nucle...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 陆晓琴马兆荣汤东升彭雪平乔旭斌匡俊何小华刘立威孙小兵刘东华
Owner CHINA ENERGY ENG GRP GUANGDONG ELECTRIC POWER DESIGN INST CO LTD
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