Flexible attachment arranging and selecting method of ultra-large type cooling tower construction tower crane based on tower barrel safety

A technology of flexible attachment and cooling towers, which is applied in the selection of flexible attachment layout of tower cranes and the selection of flexible attachment layout of super-large cooling tower construction tower cranes. It can solve the problems of low safety, high cost of tower body, delay in construction period, etc., and achieve enhanced safety. High reliability, low tower cost, and safe tower

Active Publication Date: 2012-12-26
CHINA ENERGY ENG GRP GUANGDONG ELECTRIC POWER DESIGN INST CO LTD
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Problems solved by technology

[0003] The purpose of the present invention is to provide a flexible attachment layout selection method for super large cooling tower construction tower cranes based on the

Method used

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  • Flexible attachment arranging and selecting method of ultra-large type cooling tower construction tower crane based on tower barrel safety
  • Flexible attachment arranging and selecting method of ultra-large type cooling tower construction tower crane based on tower barrel safety
  • Flexible attachment arranging and selecting method of ultra-large type cooling tower construction tower crane based on tower barrel safety

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specific Embodiment 1

[0039] Figure 1-Figure 8 Constitute the specific embodiment 1 of the present invention.

[0040] refer to figure 1 , the steps of the flexible attachment arrangement selection method in this embodiment are as follows:

[0041] 1) Obtain the size of the cooling tower and the flexible attachment parameters of the tower crane

[0042] refer to figure 2 with image 3 , for 22000m 2 The super-large cooling tower tower tube construction adopts the flexible attachment arrangement of single tower crane operation. When vertically arranged, the independent height of the tower crane is 55.1m, and the distance between each vertically attached vertically arranged 2 is 33m; when arranged horizontally, four directions of attached planarly arranged 3 are adopted, and each direction is divided into upper and lower floors. There are 8 attachment points in total, and the horizontal and vertical spacing of each attachment point is 5m. The tension of the flexible attachment of the tower cr...

specific Embodiment

[0062] The main features of this embodiment are: according to the size of the cooling tower and the flexible attachment parameters of the tower crane, 4 or 5 finite element models of cooling towers in different construction stages are established, and solid element modeling is used. All the other are with specific embodiment 1.

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Abstract

The invention discloses a flexible attachment arranging and selecting method of an ultra-large type cooling tower construction tower crane based on tower barrel safety. The flexible attachment arranging and selecting method of the ultra-large type cooling tower construction tower crane based on the tower barrel safety is characterized by comprising the following steps. The first step is that a cooling tower finite element model is selected to be analyzed in three-dimensional mode, and the three-dimensional analysis of the cooling tower finite element model comprises selecting a concrete material parameter in a construction period, setting a calculating border and confirming a wind load in the construction period and a construction load; the second step is that an initial steel wire rope tensile force and an attachment overall arranging scheme are drawn up, wherein the attachment overall arranging scheme comprises a vertical arranging scheme and a transverse arranging scheme, then the initial steel wire rope tensile force and the attachment overall arranging scheme are applied to the cooling tower finite element model in the construction period to be calculated, the overall arranging scheme is adjusted according to calculation results, and therefore the number of layers and transverse intervals of flexible attachment are confirmed; and the third step is that a local analysis model is built, concrete age when concrete is tensioned by a prestressing force, local intervals and specific reinforcing method are confirmed, and by calculating and analyzing process, the overall arranging scheme and local arranging schemes of a cooling tower are confirmed. By means of the flexible attachment arranging and selecting method of the ultra-large type cooling tower construction tower crane based on the tower barrel safety, the influence of the wind load in the construction period and construction load to a tower barrel is overcome, improvement of the safety and the stability of the tower barrel is facilitated, construction safety of a tower crane is guaranteed, the construction period can be guaranteed, and manufacturing cost of a cooling tower body is controlled.

Description

technical field [0001] The invention relates to a method for selecting a flexible attachment arrangement of a tower crane, in particular to a method for selecting a flexible attachment arrangement of a super-large cooling tower construction tower crane based on the safety of the tower tube. The utility model belongs to the construction control field of super large concrete hyperbolic cooling towers. Background technique [0002] In the construction of super-large cooling towers, tower tube construction is the most critical and difficult part in the whole construction process, and has a particularly prominent impact on safety during the construction period. Due to the small wall thickness and high height of the tower, the problem of vertical transportation is not easy to solve, especially in the construction of ultra-large and ultra-high cooling towers in nuclear power plants or large thermal power plants, conventional porous well-shaped frames, jack-up tower crane rigid atta...

Claims

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Application Information

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IPC IPC(8): E04G21/00E04H5/12
Inventor 卢钦先马兆荣徐荣彬陆晓琴刘晋超孙小兵刘立威
Owner CHINA ENERGY ENG GRP GUANGDONG ELECTRIC POWER DESIGN INST CO LTD
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