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Fragmented prefabricated assembly type mixed tower design method considering mold universality

A technology of prefabricated assembly and design method, which is applied in the assembly of wind turbines, the configuration of installation/support of wind turbines, and mechanical equipment, etc., can solve the problems of high cost of molds, construction efficiency and cost impact, etc., and achieve economical production. The effect of cost, shortened production period, and reduced quantity

Pending Publication Date: 2022-07-08
POWERCHINA HUADONG ENG COPORATION LTD
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Problems solved by technology

However, because the dimensions of each section of this type of tower are different, more molds need to be customized before concrete precast production, and the cost of high-precision molds is expensive, which has a certain impact on construction efficiency and cost

Method used

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  • Fragmented prefabricated assembly type mixed tower design method considering mold universality
  • Fragmented prefabricated assembly type mixed tower design method considering mold universality
  • Fragmented prefabricated assembly type mixed tower design method considering mold universality

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Embodiment Construction

[0033] The reference items and new items in this embodiment are both steel-concrete composite towers with a hub height of 150m. The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] like figure 2 As shown in the figure, a segmented prefabricated mixed tower, the main structure of the tower is a concrete-steel combined structure. Taking the tower of the reference project as an example, it includes a top steel tower 101, a steel conversion section 102, Concrete tower 103 , bottom hollow fan foundation 104 and prestressed steel strand system 105 . The concrete tower 103 is in the shape of a cone, and is designed to be composed of cone sections with a height of 3.0m. The steel tower 101 and the steel-concrete transition section 102 are connected by high-strength bolt assemblies, and the steel-concrete transition section 102, the concrete tower 103 and the hollow fan foundation 104 are integ...

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Abstract

The invention provides a split prefabricated assembly type mixed tower design method considering mold universality, which comprises the following steps of: determining a mixed tower body type and a mold system of a reference item according to basic conditions such as unit parameters, hoisting equipment and load level by taking whether the bearing capacity of each section, the tower frequency and the blade clearance meet design requirements as a criterion; unit parameters and fan loads of a new project and a reference project are compared, on the premise that conicity is guaranteed to be consistent, it is guaranteed that most tower drum sections in the middle are not changed in the mode that a plurality of concrete tower drum sections are increased (or decreased) downwards (or upwards), so that the purpose of mold universality design is achieved, and through fine adjustment of the concrete strength grade, the number of prestressed tendons and the like, the product yield is improved. And the economic optimization effect of the design scheme is realized. The method can meet the design requirements of tower barrels with different heights and wind turbine generators with different load levels, is efficient in design, saves the cost, and is a better technical scheme for the universality design of the prefabricated mixed tower.

Description

technical field [0001] The invention belongs to the technical field of onshore wind power concrete towers, and in particular relates to a design method for a segmented prefabricated assembled mixed tower considering the versatility of molds. Background technique [0002] With the further development and utilization of wind resources in my country, wind turbines are gradually developing towards high power and high altitude. Traditional all-steel tower technology has been difficult to meet the needs of large stiffness and large diameter wind turbine towers. In recent years, prefabricated mixed towers have received extensive attention in the field of wind power. The lower part of this structure uses a concrete tower, and the upper part uses a conventional steel tower. It has the advantages of rigidity of concrete towers and the rapid construction of steel towers. It can effectively make up for the shortcomings of low rigidity and small diameter of the flexible steel tower, and ...

Claims

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Application Information

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IPC IPC(8): F03D13/20F03D13/10F03D80/00
CPCF03D13/20F03D13/10F03D80/00Y02P70/50
Inventor 张栋梁付坤赵初李天昊彭子腾姜贞强罗金平杨文斌汤群益俞华锋王飞孙杏建袁中帅朱康富李宏杰
Owner POWERCHINA HUADONG ENG COPORATION LTD
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