Rotatable truss and strength resistance evaluation method thereof

A truss and strength technology, applied in the field of rotatable truss and its strength resistance assessment, can solve the problems of inconvenient replacement and inability to assess strength, achieve the effect of anti-corrosion thermodynamic performance and improve safety

Active Publication Date: 2021-05-07
NAVAL UNIV OF ENG PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects of the prior art, the purpose of the present invention is to provide a rotatable truss and its method for obtaining its resistance strength parameters, aiming to solve the problems that the replacement of marine hydrological detection equipment is inconvenient and the resistance strength cannot be evaluated when the support rods are used for erection

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  • Rotatable truss and strength resistance evaluation method thereof
  • Rotatable truss and strength resistance evaluation method thereof
  • Rotatable truss and strength resistance evaluation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0067] The truss support includes a truss main body, a top interface and a fixing device; wherein, the truss main body is divided into a truss rear main body, a truss front main body and a rotating structure. After connecting with the pile foundation, the overall effect is as follows figure 1 shown.

[0068] The main body of the truss is made of pultruded carbon fiber reinforced composite material, the main beam of the rear main body of the truss is a square beam, and the front main body of the truss and the diagonal support rods are equilateral angle beams. The composite material is composed of carbon fibers and a matrix, and is black after curing.

[0069] Among them, carbon fiber T300 composite material is a high-performance aerospace-grade composite material, which has the characteristics of light weight, high strength, high temperature resistance, corrosion resistance and excellent thermodynamic properties, so it is widely used as structural materials and high temperatur...

Embodiment 2

[0079] In the strength evaluation method provided in Example 2, the truss structure used is the truss structure provided in Example 1. In order to ensure the safety of the truss, it is necessary to use the large-scale finite element software ABAQUS to simulate and analyze the structural strength of the truss under working and installation conditions to determine whether the structural strength meets the requirements. Among them, the unit in the simulation calculation uses the N-mm unit system. Among them, the basic mechanical properties of composite materials and stainless steel are shown in the table.

[0080]

[0081] Step 1: Calculate model simplification

[0082] The initial truss structure model includes 6 main girders, oblique support rods and top braces in the front and rear main bodies of the truss. In the process of finite element analysis, ABAQUS software treats the truss structure as a beam structure. In order to facilitate modeling and calculation during analy...

Embodiment 3

[0097] The strength evaluation method provided in embodiment 3, the truss structure adopted is the truss structure provided in embodiment 1, which is similar to the strength evaluation method provided in embodiment 2, the difference is that embodiment 2 evaluates the truss structure under working conditions Strength parameters, embodiment 3 evaluates the resistance strength parameters under the installation condition of the truss structure. Details are as follows:

[0098] Such as Figure 7 As shown, the truss installation condition: the truss structure requires installers to install and remove the fixing pins at the rotating structure; the material parameters under the truss installation condition are the same as those of the carbon fiber T300 under the working condition in Example 2.

[0099] Step 1: Calculate model simplification

[0100] Based on the installation conditions, the most dangerous situation of the truss bearing is considered, that is, the fixed pin of the ro...

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Abstract

The invention provides a rotatable truss and a strength resistance evaluation method thereof, and belongs to the field of marine meteorological data acquisition, and the rotatable truss comprises a rotating structure, a truss rear main body and a truss front main body; the rotating structure comprises two pin shafts and a fixing pin; the two pin shafts are respectively connected with the truss front main body and the truss rear main body; the truss rear main body and the truss front main body are made of pultrusion carbon fiber reinforced composite material profiles; and the rotating structure is used for rotating the truss front body. The strength resistance evaluation method comprises the following steps: constructing a first truss structure model; applying the working condition parameters to the first truss structure model, and acquiring the strength resistance parameters of the first truss structure model under different working conditions; and comparing the strength parameters of the first truss structure model and the actual truss, and evaluating whether the actual truss meets the actual application requirements or not. According to the invention, marine hydrological detection equipment can be replaced conveniently; besides, wind load resistance can be judged in advance, and the safety of the truss in practical application is improved.

Description

technical field [0001] The invention belongs to the field of marine meteorological data collection, and more particularly relates to a rotatable truss and its resistance strength evaluation method. Background technique [0002] In order to measure the atmospheric profile of the sea surface, the erection of the meteorological environment data integrated acquisition device requires that the height difference between the sensor and the sea surface be between 3m and 15m. The distance from the coast-sea junction must be small enough, even extending above the seawater surface, to ensure that the infrared sensor can illuminate the seawater surface, and the meteorological reference measured by meteorological and other sensors will not be affected by the land environment. Traditionally, the support rod structure is used as the fixing device of the meteorological environment data integration acquisition device. However, because the location within a few meters of the beach-shore junct...

Claims

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Application Information

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IPC IPC(8): G06F30/17G06F30/23G06F119/02G06F119/04G06F119/14
CPCG06F30/17G06F30/23G06F2119/02G06F2119/04G06F2119/14
Inventor 左雷察豪王彬彬汤华涛于萍李静威李洪科
Owner NAVAL UNIV OF ENG PLA
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