Optimization Design Of Reinforced Concrete Variable Cross-section Cantilever Beam Based On ANSYS

In the21st century, energy conservation and environmental protection building structuredesign has been one of the topics that the scientists working on.Structural optimization ismoving forward from this direction of thinking, now, in the field of engineering, constructionsafety and effectiveness of the investment are two aspects to evaluate the reasonableness ofthe main building to overcome, namely, not only ensure the safety of production buildings,but also the largest degree to reduce the cost of the building. As a powerful finite elementsoftware, ANSYS can provide more advanced optimization method for designers in structureoptimization aspect, reducing the cumbersome calculation process greatly, while reducing thecomputational error, simulating the force of structures more accurate, not only wins valuabletime for designers, but also provides a more accurate optimization methods.This thesis is tapered reinforced concrete cantilever as the research object, based on"Design of Concrete Structures" requirements, respectively from the aspect of componentstrength, displacement and structure to design the structure, considering the stress of therectangular cross-section cantilever beam characteristics, shape optimization, with the freeend of the cantilever beam and fixed end cross section size, reinforcement ratio and stirrupratio as optimization variables, In reinforced concrete variable cross-section cantilever beamcost as the optimization target, modeling through large general-purpose finite elementsoftware ANSYS to build a cantilever beam model and optimize the design and calculation,using the first order method in the finite element method, got cantilever maximum stress,maximum bending moment and maximum displacement calculation results, compared withthe theoretical value, we can see the results from very close to the theoretical value, indicatingthat the optimization results are theoretical basis. Finally, the calculation obtained byoptimizing the optimal size of the best cross-section of reinforced concrete cantilever beam ofvariable cross-section and the optimal cost components, and then with the traditionaloptimization results comparing the results obtained from the research, the design has beenoptimized by ANSYS software to optimize the results than before saving nearly4%. In thispaper are carried out in accordance with the design specifications force analysis and set upmathematical model, has certain reference value to design personnel.