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- 저자 : Jianle Yu (검색결과 2 건)
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Topology Optimization of Steel Structure for Waste Incineration Steam Generator Based on DE and PSO
Jianling Chen,Yu-Hang Wang,Xu Zhan 한국강구조학회 2021 International Journal of Steel Structures Vol.21 No.4
The paper presents a topology optimization of steel structure about a waste incinerator steam generator to get economical structural layout. Firstly, the load function is got by analyzing the load distribution of a top girder about a certain type of waste incinerator steam generator. According to the theory of structural mechanics, the axial load function of steel frame is proposed. Secondly, the reasonable section class for members are selected and the functional relationship in the steel amount for steel frame with several variables is established. But it is diffi cult to solve them by ordinary analytic method due to these variables are interrelated. Therefore, intelligent bionics algorithm such as DE-diff erential evolution algorithm and PSO-particle swarm optimization are employed, the two algorithms are compared in the experiment. The simulation results show that the intelligent bionic algorithm can eff ectively deal with the optimization problems of steel structure.
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Jie Deng,Jianjun Zhao,Xiao Zhao,Jianle Yu,Chun Lei,Minlee Lee,Runqiu Huang 대한토목학회 2022 KSCE JOURNAL OF CIVIL ENGINEERING Vol.26 No.4
It is important to account for the poor ecological environment of weak seasonal permafrost regions while developing a suitable ground improvement technique. As an organic non-polluting material, glutinous rice slurry improves the unconfined compressive strength of the soil through induction and synergy with lime. The Qinghai-Tibet Plateau has cold weather, large temperature differences between day and night, and a fragile ecological environment. Once damaged, it is extremely difficult to recover. This study investigates the effects of glutinous rice slurry on the unconfined compressive strength (UCS), failure mode, and microstructure of lime-treated seasonally frozen soil subjected to freeze–thaw cycles. Organic glutinous rice slurry with concentrations of 0, 2, 4, 6, and 8% was added to soil specimens that were treated with 10% lime and subjected to 0, 1, 3, 6, and 10 freeze–thaw cycles. In tests, the addition of glutinous rice pulp could increase the UCS of the soil by up to 40%. The first freeze-thaw cycle has the greatest impact on the UCS of the soil sample, with a decrease of 6 – 15%. Glutinous rice slurry can reduce the degradation effects of freeze-thaw cycles by increasing the contact area between soil particles. In a comprehensive evaluation under test conditions, a glutinous rice slurry concentration of 4% led to optimal results. It revealed the change characteristics of the microstructure under the action of freeze-thaw cycles, which has a good corresponding relationship with the macroscopic mechanical properties. The results can provide reference value for the application of glutinous rice slurry in the modification of subgrade soil in seasonal permafrost areas.
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