Evolutionary Structural Topology Optimization for Cantilever Construction of Continuous Rigid-Frame Bridge

Wen Hui Zhang; Yao Ting Zhang; Guo Qing Li

doi:10.4028/www.scientific.net/AMM.90-93.18

Paper Titles

Method to Identify the Critical Slip Surface of Side Slope via the Deformation Field and Stress Field Calculated through Deformation Modulus Elastoplasticity Strength Reduction Method
p.3

Study on Interaction between Mini-Pile and Slope under the Effect of Overloading
p.12

Evolutionary Structural Topology Optimization for Cantilever Construction of Continuous Rigid-Frame Bridge
p.18

Capacity Analysis of Anti-Slide Pile with Concrete Filled Steel Tubular
p.23

Experimental Investigation into Multistage versus Conventional Triaxial Compression Tests for a C-Phi Soil
p.28

Generation Mechanism of Coal Pillar Rock Burst
p.33

Numerical Simulation of Transient Electromagnetic Response of Unfavorable Geological Body in Tunnel
p.37

Dry and Wet Cycle Tri-Axial Test Research of Silt
p.41

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 90-93Evolutionary Structural Topology Optimization for...

Evolutionary Structural Topology Optimization for Cantilever Construction of Continuous Rigid-Frame Bridge

Abstract:

In this paper, an evolutionary structural optimization (ESO) method based on the Ishai stress and artificial material elements was used to optimize the structure topology of the cantilever construction of an actual continuous rigid-frame bridge with a new fasting structual system. In iteration process, the engineering infeasible solution was dealt with the engineering constraints; the checkboard problem was solved with the filter scheme, which used the average Ishai stress of the elements located inside the filter domain instead of that located at the center; moreover, the local stress concentration problem was also solved with the scheme of gradully decreasing the filter radius. Thus the iteration ran smoothly, then the optimizing results were obtained finally. The final topology model illustrates the feasibility of the fasting structual system, and the proposed methods are effective to the optimization design for the actual bridge.