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Calculation method for angle steel-gusset plate connection initial rotation rigidity in angle steel tower

A technology of rotational stiffness and calculation method, applied in computing, instrumentation, electrical and digital data processing, etc., can solve the problems of affecting the bearing capacity of the tower, affecting the bending stress, insufficient research on the calculation of the initial rotational stiffness, etc.

Inactive Publication Date: 2019-05-24
重庆顺泰铁塔制造有限公司 +1
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Problems solved by technology

For the transmission angle steel tower structure, different initial stiffness directly affects the bending stress of the main material in the linear elastic stage, and then affects the bearing capacity of the iron tower. At present, domestic research on the initial rotational stiffness calculation of the transmission angle steel tower structure is insufficient

Method used

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  • Calculation method for angle steel-gusset plate connection initial rotation rigidity in angle steel tower
  • Calculation method for angle steel-gusset plate connection initial rotation rigidity in angle steel tower
  • Calculation method for angle steel-gusset plate connection initial rotation rigidity in angle steel tower

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Embodiment

[0032] A method for calculating the initial rotational stiffness of the angle steel-node plate connection in the angle steel tower includes the following steps:

[0033] S1. Determine the effective components that contribute to the stiffness of the connection; the effective components that affect the force performance of the angle steel tower node include: the main steel is sheared in the node domain, the bolt group is sheared, and the main steel and the screw holes of the connection plate are squeezed.

[0034] S2. Calculate the stiffness of each effective component. Since the bearing capacity of this type of node is mainly obtained by the shear resistance of high-strength pressure-bearing bolts. Stiffness when cutting. The initial stiffness of the joint is mainly composed of the shear rotational stiffness of the main steel node domain and the rotational stiffness of the gusset plate relative to the main steel, such as figure 1 with figure 2 As shown, the stiffness calculated in ...

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Abstract

The invention discloses angle steel in an angle steel tower. The method for calculating the initial rotation stiffness of the gusset plate connection comprises the following steps: determining an effective component contributing to the connection stiffness; Calculating the rigidity of each effective component; and according to the rigidity of each effective assembly and the calculation model of the node, obtaining the initial rotation rigidity of connection. According to the calculation method disclosed by the invention, the angle steel is influenced; Rigidity calculation is carried out on effective components connected with the gusset plates, and angle steel-angle steel is obtained through combination. The initial rotary ridigity of an angle steel - gusset plate is calculated through theformula, and reference can be provided for engineering design.

Description

Technical field [0001] The invention belongs to the technical field of angle steel tower design, in particular to a method for calculating the initial rotation stiffness of the angle steel-node plate connection in the angle steel tower. Background technique [0002] The initial rotation stiffness of the connection determines the initial direction of the bending moment-angle curve, represents the stiffness of the connection in the linear elastic phase, and affects the bending resistance of the connection. Taking the steel frame structure as an example, in the elastic calculation analysis and structural use stage, the higher initial rotation stiffness and flexural bearing capacity of the joints can increase the span of the structure, reduce the beam height, and obtain more space for use. For the transmission angle steel tower structure, different initial stiffness directly affects the bending stress of the main material in the linear elastic stage, and then affects the bearing capa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 刘蜀宇刘红军陈文军
Owner 重庆顺泰铁塔制造有限公司
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