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Analysis and control based on the the port quayside container crane structure optimization ideas parameters design and its dynamic characteristics

Author: WanZuoZhi
Tutor: ZhengSu
School: Shanghai Maritime University
Course: Mechanical Design and Theory
Keywords: Finite Element The harbor quayside container bridge crane Optimal design TMD Vibration Control
CLC: U653.9
Type: Master's thesis
Year: 2003
Downloads: 237
Quote: 8
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Abstract


With the development of the shipping port quayside container bridge crane (hereinafter referred to as the quay crane) structure of the increasingly high demand. The Container Ship increasing lead to dramatically increase the outreach of the shore bridge. This development has brought to the shore bridge two questions: 1. Design problems. Have many design departments for analysis using finite element software, but basically the handmade - Software dialogue that hand modeling, manual extraction results, although to a certain extent to solve computing problems, but there is still much Disadvantages: modeling and analysis of results very inefficient, not only to establish the model to extract the calculation result of the trouble, but also shore bridge structure model calculation is very isolated, unable to automatically cycle calculation, optimization design out of the question; followed not by CAE (computer Supporting calculations) to dominate the CAD (computer aided design), makes the the quay crane calculated merely reduced to the checking part of the design. This leads to the structural design highly dependent on the experience, and rely heavily on the experience in a certain sense, it means conservative, shore bridge result, the the increasingly bulky structure, resulting in material waste and excessive wheel pressure (leading to the pier cost too large), thereby constraining the large-scale development of the quay crane structure. 2. Vibration problem, which is a prominent problem for large shore bridge put into practical use. Of quayside large, but weight has been strictly limited (Pier aspects restrictions), more and more flexible so shore bridge structure has become an inevitable trend, leading to increased vibration. Or guarantee the shore bridge work efficiency and operator comfort in terms of structural safety, control vibration are very necessary. For the first question, quantitative calculation experience and computer database principles and modern optimization design method to create a quay crane optimization design system: using VB programming to call data, organize data transfer and computing with Excel tables to store data, and establish a core data table, the finite element software ANSYS secondary development, design data input and output transmission interface. By all measures, very good solution to the problem of inefficient, to a certain extent the optimized design of the the large shore bridge structure design has a very strong practical. And on this basis the shore engineering experience combined with the system to guide the design of the new bridge structure design ideas. For the second question, through analysis and comparison, this paper Civil Engineering towering structure with more quality FM damper - TMD damper. Learn from the first problem-solving methods and ideas, this paper studies the optimal design parameters of specific programs and TMD TMD damper structural vibration control of quayside. Dynamic analysis, analysis of two models: single box girder shore bridge and dual-the box girder shore bridge (both parametric model modeling). As a preliminary work of the TMD control vibration, modal analysis calculations are, and compare their dynamic differences, analysis by calculating the results is very consistent with the actual model and select modal algorithm realistic. Finally, combined with the previous modal analysis results, the use of control of the basic theory, and learn from some of the works on the damping of experience using the TMD structural vibration control each of these two cranes. TMD optimization design are mainly two aspects: one is the TMD parameters, and the other is the installation location of the TMD. The former program searches for the best, considering the latter based on vibration control theory and engineering experience as well as engineering requirements. Analysis through simulation of the model calculation and found that the the TMD control effect is very good.

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CLC: > Transportation > Waterway transport > Port projects > Port Construction and Equipment
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