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Optimization objective and optimization method of portal fra
Release time:2017-04-20 10:51:05 | Views：
Optimization objective and optimization method of portal frame
 
In the light of the structural design, should ensure the safety of the structure of the premise, so that the structure of the steel used in the province, the lowest cost. This is also our optimization design method to optimize the target. But in the actual design, the steel quantity and the cost of the light steel structure are determined by the section size of the structural member. Therefore, our optimization goal can be directly reduced to how to select the reasonable and reasonable section size, so that it can meet the requirements of strength, stiffness and stability.
 
Optimization method and grid architecture is similar to that of the optimization method of portal frame structure using asymptotic full stress method, namely, the door type steel structure bar through several computational analysis to modify its section size, make it reach or as close as possible to the full stress state, until the door type steel structure of all section size need to change, so that the use of rigid minimum amount of door type steel structure, with the aim of optimizing the lowest cost. The section size of component modification is optimizing the section size, the method is to select the section size in section plane and out of plane two direction bending resistance torque is maximum, and the minimum section area, which is under the external loads, section size choice should not only meet the requirements of the design strength of the structure strength of materials, stability checking, and the material consumption of the province.
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