Method for determining decline rate of bearing capacity of ocean platform crane

A technology for offshore platforms and bearing capacity, which is applied in special data processing applications, instruments, electrical digital data processing, etc., and can solve the problems of rod corrosion and structural damage without consideration of installation conditions, lack of scientificity and accuracy, and single characteristics of cranes sexual issues

Inactive Publication Date: 2021-08-27
NORTHEAST GASOLINEEUM UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the calculation of the bearing capacity of the offshore platform crane is obtained by measuring the thickness of each rod of the crane, and substituting the measured wall thickness value into the initial finite element model of the crane for numerical calculation. This method does not consider the installation conditions and the process of use. Rod corrosion and structural damage due to fa

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for determining decline rate of bearing capacity of ocean platform crane
  • Method for determining decline rate of bearing capacity of ocean platform crane
  • Method for determining decline rate of bearing capacity of ocean platform crane

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment

[0055] First, under a specific embodiment, the specific parameters of the crane are given. The maximum carrying capacity of the crane is 300kN, and the jib of the crane is divided into five sections.

[0056] The method for the rate of decline of the carrying capacity of the offshore platform crane comprises the steps:

[0057] The first step is to test the static and dynamic performance of the overall structure of the offshore platform crane to be tested;

[0058] This step is carried out according to the following path:

[0059] 1. During the dynamic performance test, the jib of the crane is in a state parallel to the deck, that is, in a horizontal state; the vibration sensor is arranged on each root member of the crane jib of the offshore platform to be tested, and these members are parallel to the platform deck. And the two rods are perpendicular to each other, at least 8 acceleration sensors are arranged on the boom, and the modal parameters of the crane are obtained thr...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for determining the decline rate of the bearing capacity of an ocean platform crane. The method comprises the following steps of building a structural performance database and a geometric section parameter database which form an ocean platform crane main body, and taking the initial design of a tested ocean platform crane as a basis, establishing an integral finite element model of the crane structure and a multi-scale model of the local structure of the crane, performing correlation analysis on the test model and the finite element model through a modal test of the crane structure and a water bag bearing test of the crane structure, and calibrating the integral finite element model of the crane structure and the multi-scale model of the local structure of the crane, eliminating the modeling error of the finite element model of the overall structure of the crane and the modeling error of the multi-scale model of the local structure of the crane, combining the calibrated crane overall structure finite element model with the crane local structure multi-scale model to form a test crane finite element multi-scale reference model, and through finite element static force and modal calculation and analysis of the reference model, acquiring the reduction rate of the bearing capacity of the crane.

Description

Technical field: [0001] The invention relates to a method applied on an ocean platform to measure the decline rate of the bearing capacity of a crane. Background technique: [0002] At present, the calculation of the bearing capacity of the offshore platform crane is obtained by measuring the thickness of each rod of the crane, and substituting the measured wall thickness value into the initial finite element model of the crane for numerical calculation. This method does not consider the installation conditions and the process of use. Rod corrosion and structural damage due to marine environment and other factors. In addition, due to different environmental loads and differences in installation and use norms of offshore platform cranes, each crane has a single characteristic, resulting in changes in the active cranes compared with the initial finite element model. The measured wall thickness is substituted into the initial model for calculation, which lacks scientificity an...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06F30/17G06F30/23G06F119/02G06F119/14
CPCG06F30/17G06F30/23G06F2119/02G06F2119/14
Inventor 闫天红周国强王维刚冯昊龙王旭刘伟
Owner NORTHEAST GASOLINEEUM UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap