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Optimized Research Of Inland All-vertical-piled Frame Wharf

Posted on:2011-06-07Degree:MasterType:Thesis
Country:ChinaCandidate:F H LiFull Text:PDF
GTID:2132360305480526Subject:Port, Coastal and Offshore Engineering
Abstract/Summary:
The stressed state of All-vertical-piled Frame Wharf is very complex and engineering design inclined to the conservative in general. This will result in greater waste of resources. Therefore, optimization design research of all-vertical-piled frame wharf is necessary. In this paper, Chongqing Cuntan pier was used as a model of optimization. Optimization methods of all-vertical-piled frame wharf have been terminal study by the creation of parameterized models and to "quality lightest" as the target. Optimization of a significant effect was achieved in the conditions of the structural strength and stability being qualified. The work and the main conclusions are as follows:â‘ Describes the current situation and problems of the all-vertical-piled frame wharf optimization. The theory of the basis optimization theory and the finite element method were described. Research methods of structural optimization technology combined with the ANSYS finite element theory have been identified through in-depth research and analysis.â‘¡ANSYS APDL was applied to achieve an overhead vertical pier structure parametric modeling. Static pushover analysis method according to all-vertical-piled frame wharf parametric model was applied to three-dimensional static analysis in the addition of unfavorable load conditions. Comparative analysis of a variety of the most adverse operating conditions of axial force, shear and bending moment been carried out, with the non-parametric model calculation results to compare. The results is reasonable by using three-dimensional models analyze the results. This proves that a variety of parametric models and the reliability of the force conditions, which can be used as the next step finite element model of optimization.â‘¢To the total volume of the structure being the minimum as the objective function. Axial stress, first principal stress, the second principal stress and element displacement do not exceed the upper limit were used as constraint conditions. In this paper, taking into account the complexity of the structure and force, ANSYS zero-order optimization method was used for optimization. At each step based on the optimization, optimization analysis has been carried in its most unfavorable load conditions. The results proved that this method is feasible and effective.â‘£Based on the research in the above,The structural parameters were adjusted based on the size of Manufacturing Process. Before and after optimization of the structural features and force characteristics have been compared and analyzed. Finally got the final proposal, meanwhile, the overhead vertical structural optimization methods have been summarized.
Keywords/Search Tags:all-vertical-piled frame wharf, parameterized model, Finite element method, Optimization
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