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Measuring method of towercrane crane jib structural distortion and stress

A technology for tower cranes and structural deformation, applied in calculations, special data processing applications, instruments, etc., can solve problems such as unpredictable temperature changes, inability to calculate space truss displacement, inability to analyze free vibration modes, etc.

Inactive Publication Date: 2009-10-21
NANJING UNIV OF TECH
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  • Abstract
  • Description
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Problems solved by technology

However, the system cannot calculate the displacement of the space truss, cannot analyze the free vibration mode, and cannot predict the influence of temperature changes and support changes on the entire structure

Method used

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  • Measuring method of towercrane crane jib structural distortion and stress
  • Measuring method of towercrane crane jib structural distortion and stress
  • Measuring method of towercrane crane jib structural distortion and stress

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Embodiment Construction

[0078] Such as figure 1 As shown, this embodiment includes: human-computer interactive tower crane steel structure design and static analysis module and material product design database module, wherein: human-computer interactive tower crane steel structure design and static analysis module consists of four sub-design The module consists of the design module of the jib frame, the design module of the tower cap, the design module of the balance arm and the design module of the tower body. The process of each sub-design module is similar as figure 2 The design flow for the jib is shown.

[0079] Enter the boom design module process, the detailed process is as follows figure 2 shown.

[0080] Starter program:

[0081] Step 1. There are three types of jib lifting points: single lifting point DUM1, static double lifting point DUM 2 or super static double lifting point DUM 3, choose one.

[0082]Step 2. Determine whether the section type of the jib is an equilateral triangle T...

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Abstract

The invention provides a method for measuring towercrane crane jib structural distortion and stress of a trolley-jib amplitude type tower crane, which is based on the finite element method. The measuring method comprises the following steps: firstly, determining main parameters of the tower crane steel structure in the form of man-machine interaction, then calculating the nodes, the coordinates of finite element joints, the number of the finite elements, space direction cosine, and the dead weight of the finite element, determining the weight of a luffing mechanism, determining the equivalent joint load, generating the equation to form a total stiffness matrix, accurately calculating the element stress of spacetruss based on the finite element method, considering the effect of the deformation and stress of truss due to temperature change and reaching the aim of computer-aided tower crane design, thus greatly reducing the design cost.

Description

technical field [0001] The present invention relates to a method for measuring and calculating the deformation and stress of the jib of a tower crane (hereinafter referred to as the tower crane), and more specifically relates to the deformation and stress of the jib structure of a trolley luffing tower crane based on the finite element method. Stress calculation method. Background technique [0002] Tower crane is an important construction machine in modern industrial and civil buildings. With the continuous development of tower cranes in the direction of safety, stability, high efficiency and energy saving, higher requirements are put forward for the design technology and automation design system of tower cranes. However, my country's tower crane manufacturers are generally small in scale, do not have or do not have the ability to independently develop products, the products are relatively single, it is difficult to update, and they lack competitiveness in the internationa...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 殷晨波贾文华
Owner NANJING UNIV OF TECH
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