|Table of Contents|

Improved Method for Optimal Design of Overall Bearing Capacity Optimization of Frame Structures(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2020年05期
Page:
170-181
Research Field:
Publishing date:

Info

Title:
Improved Method for Optimal Design of Overall Bearing Capacity Optimization of Frame Structures
Author(s):
LIU Jiadaren1; 2;  YANG Lyu-feng1;  ZHANG Wei1;  FENG Ying-qi3
1. Key Laboratory of Engineering Disaster Prevention and Structural Safety of Ministry of Education, Guangxi University, Nanning 530004, Guangxi, China; 2. Department of Civil and Environmental Engineering, University of Alberta, Edmonton T6G1H9, Alberta,
Keywords:
overall bearing capacity;  enhanced iteration coefficient;  optimal design;  elastic modulus reduction method
PACS:
TU318
DOI:
10.19815/j.jace.2018.01053
Abstract:
In order to solve the problems existing in the optimal design of the overall bearing capacity of frame structures, the adjustment method of geometric parameters of rectangular and I-shaped sections under the combination of multiple internal forces was studied and established. By introducing the enhanced iteration coefficient, an improved method for the optimal design of overall bearing capacity of frame structure was proposed. Firstly, the damage evolution process of the frame structure under the combined internal force was analyzed by the elastic modulus reduction method, and the bearing capacity requirements of the frame structure at both the component and the overall level were determined. Then, the enhanced iteration coefficient was put forward and the value was determined, and the section strength was adjusted accordingly. The accelerated iterative scheme for the optimization design of the overall bearing capacity of the structure was established, which could ensure the safety requirements of the frame structure at both the component level and the overall level, and optimized the structural consumables. At the same time, in order to update the section strength adjustment in the structural calculation model, the geometric parameters adjustment formulas of rectangular and I-shaped sections under the combined action of multiple internal forces were established, which could be used to adjust the geometric parameters of cross-section according to the requirements of section strength adjustment. Finally, the rationality of the proposed method was verified by comparing with the full stress optimization criterion method. The results show that using the method of adjusting the geometric parameters of the member section and the accelerated iterative scheme, the convergence speed of the proposed method is fast when the enhanced iteration coefficient is 1.001-1.020, and the optimal design scheme of the frame with excellent bearing performance and economic performance can be obtained.

References:

[1] PATNAIK S N,HOPKINS D A.Optimality of a Fully Stressed Design[J].Computer Methods in Applied Mechanics and Engineering,1998,165(1/2/3/4):215-221.
[2]MAKRIS P A,PROVATIDIS C G.Weight Minimisation of Displacement-constrained Truss Structures Using a Strain Energy Criterion[J].Computer Methods in Applied Mechanics and Engineering,2002,191(19/20):2187-2205.
[3]KHOSRAVI P,GANESAN R,SEDAGHATI R.Optimization of Thin-walled Structures with Geometric Nonlinearity for Maximum Critical Buckling Load Using Optimality Criteria[J].Thin-walled Structures,2008,46(12):1319-1328.
[4]O’BRIEN E J,DIXON A S.Optimal Plastic Design of Pitched Roof Frames for Multiple Loading[J].Computers & Structures,1997,64(1/2/3/4):737-740.
[5]KALISZKY S,LOGO J.Optimal Design of Elasto-plastic Structures Subjected to Normal and Extreme Loads[J].Computers & Structures,2006,84(28):1770-1779.
[6]KHANZADI M,TAVAKKOLI S M.Optimal Plastic Design of Frames Using Evolutionary Structural Optimization(ESO)[J].International Journal of Civil Engineering,2011,9(3):165-170.
[7]KAVEH A,BAKHSHPOORI T,KALATEH-AHANI M.Optimum Plastic Analysis of Planar Frames Using Ant Colony System and Charged System Search Algorithms[J].Scientia Iranica,2013,20(3):414-421.
[8]杨绿峰,欧 伟,张 伟.桥梁结构两层面承载力设计与优化的策略和方法[J].中国公路学报,2016,29(7):62-71.
YANG Lu-feng,OU Wei,ZHANG Wei.Investigation on Strategy and Method of Two-level Load Carrying Capacity Design and Optimization for Bridge Structures[J].China Journal of Highway and Transport,2016,29(7):62-71.
[9]杨绿峰,李 琦,张 伟.工程结构整体承载力设计与优化的弹性模量缩减法研究[J].土木工程学报,2015,48(5):61-70.
YANG Lu-feng,LI Qi,ZHANG Wei.Elastic Modulus Reduction Method for Design and Optimization of Global Load Bearing Capacity of Engineering Structures[J].China Civil Engineering Journal,2015,48(5):61-70.
[10]朱伯芳.复杂结构满应力设计的浮动应力指数法[J].固体力学学报,1984(2):255-261.
ZHU Bo-fang.The Method of Floating Stress Exponent for the Fully Stressed Design of Complex Structures[J].Acta Mechanica Solida Sinica,1984(2):255-261.
[11]KAVEH A,TALTAHARI S.An Improved Ant Colony Optimization for the Design of Planar Steel frames[J].Engineering Structures,2010,32(3):864-873.
[12]TOGAN V.Design of Planar Steel Frames Using Teaching-learning Based Optimization[J].Engineering Structures,2012,34:225-232.
[13]MAHERI M R,NARIMANI M M.An Enhanced Harmony Search Algorithm for Optimum Design of Side Sway Steel Frames[J].Computers & Structures,2014,136:78-89.
[14]CHAN C M,GRIERSON D E.An Efficient Resizing Technique for the Design of Tall Steel Buildings Subject to Multiple Drift Constraints[J].The Structural Design of Tall and Special Buildings,1993,2(1):17-32.
[15]SAKA M P,KAMESHKI E S.Optimum Design of Nonlinear Elastic Framed Domes[J].Advances in Engineering Software,1998,29(7/8/9):519-528.
[16]张爱林,魏文豪,杨海军.预应力索-拱结构优化设计[J].钢结构,2008,23(1):24-27.
ZHANG Ai-lin,WEI Wen-hao,YANG Hai-jun.Optimal Design of Prestressed Cable-arch Structure[J].Steel Construction,2008,23(1):24-27.

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Last Update: 2020-10-15