基于理想点法的脱硫塔轴压屈曲承载力优化研究  

Optimization of Axial Buckling Capacity of Desulfurization Tower Based on Ideal Point Method

作　　者：王平[1] 胡兴誉 周方铭 梅钊 吴金池 Ping Wang;Xingyu Hu;Fangming Zhou;Zhao Mei;Jinchi Wu(School of Resourse and Environmental Engineering,Wuhan University of Science and Technology,Wuhan 430081,China;Hubei Industrial Construction Group Co.,Ltd.,Wuhan 430000,China)

机构地区：[1]武汉科技大学资源与环境工程学院,武汉430081 [2]湖北省工业建筑集团有限公司,武汉430000

出　　处：《钢结构（中英文）》2024年第6期22-30,共9页Steel Construction（Chinese & English）

基　　金：国家自然科学基金项目(51604195);湖北省自然科学基金项目(2018CFC818)。

摘　　要：针对矿山化工等行业中烟气脱硫核心装置脱硫塔的结构设计问题,以脱硫塔的质量最小和屈曲承载力最大为优化目标,基于理想点法将多目标优化问题转化为单目标优化问题,结合不同参数下脱硫塔的应力分布特征,构建了针对脱硫塔的轴压屈曲承载力优化模型。以某烟气脱硫工程脱硫塔为工程背景,基于APDL语言设计了一套关于脱硫塔屈曲承载力的参数化建模及优化分析方法。轴压屈曲承载力优化主要结论为:1)环向、纵向加强筋对于轴压荷载下的脱硫塔结构稳定性均有较好加强作用,但纵向加强筋的补强效果明显优于环向加强筋;尽管联合补强的效果要低于纵向加强筋单独补强,但是工程实际中复杂工况决定了环向加强筋不可或缺;2)联合补强后的结构强度有较大提高,结构的最大许用应力提升幅度达一倍多,加强效果明显;从应变云图中可以看到,尽管结构变形程度有小幅增加,但分布更加均匀,能够更充分地利用材料承载性能,保证结构整体稳定;3)优化后的脱硫塔结构质量从417810 kg增加到429160 kg,增加了2.715%,结构屈曲承载力从22077.435 N提升到47536.231 N,提高了115%。通过该优化分析方法,能够获得较为合理的加筋方案,操作过程简单,优化效果明显。For the structural design problem of the core device of flue gas desulfurization in mining and chemical industries,taking the minimum weight and maximum buckling resistance as the optimization objectives,the multi-objective optimization problem is transformed into a single-objective optimization problem based on the ideal point method,combined with the stress distribution characteristics under different parameters.A buckling resistance optimization model for the desulfurization tower is established.Based on the APDL language,a parameterized modeling and optimization analysis method for the desulfurization tower′s buckling resistance is designed for a specific flue gas desulfurization project as the engineering background.The main conclusions of the axial compression buckling resistance optimization are as follows:1)The ring and longitudinal reinforcing bars have good strengthening effects on the structural stability of the desulfurization tower under axial compression load,but the strengthening effect of the longitudinal reinforcing bar is significantly better than that of the ring reinforcing bar;Although the combined strengthening effect is lower than that of the longitudinal reinforcing bar alone,the engineering actual complex working conditions determine that the ring reinforcing bar is indispensable;2)The combined strengthening structure has a significant increase in strength,the maximum allowable stress is raised by more than one and a half times,the strengthening effect is obvious;Although the degree of deformation of the structure has a slight increase,the distribution is more uniform,and the material bearing capacity can be used more fully to ensure the overall stability of the structure.3)The optimized tower structure weight increased from 417810 kg to 429160 kg,an increase of 2.715%,and the structural buckling capacity increased from 22077.435 N to 47536.231 N,an increase of 115%.Through this optimized analysis method,a more reasonable reinforcement scheme can be obtained,the operation process is sim

关 键 词：脱硫塔 理想点法 屈曲承载力 优化设计 

分 类 号：TU312[建筑科学—结构工程]