多参数协同优化下新型模块化节点的承载性能研究
Research on Load-Bearing Performance of New Modular Joints Under Multi-Parameter Collaborative Optimization
针对带中心区加强环的新型铝合金模块化节点承载性能优化问题,文中基于ABAQUS建立精细化有限元模型,系统性探究模块化单元厚度、加强环板厚、底部加劲板、螺栓布局等多参数的耦合影响规律。结果表明:将模块化单元底板厚度提升至顶板厚度的两倍,并增设10 mm厚底部加劲板,可使节点极限承载力最大提升11.98%,同时节点位移降幅达18.37%。通过对螺栓进行参数化分析,提出非对称优化配置方案,优化翼缘区与腹板区螺栓数量,既能改善节点受力分布,又可避免施工冗余。节点荷载-位移曲线显示,底部加劲板对刚度提升的贡献显著,其初始刚度较基准模型大幅提高,且曲线完全包络刚性单元的响应曲线。参数敏感性分析表明:底板厚度与加劲板设置对节点承载力增益呈强正相关,而腹板区螺栓超量配置仅带来3.57%的承载力提升,证实节点设计应优先优化关键构件。研究成果为铝合金模块化节点的精细化设计提供了理论依据与数据支撑。
This study investigates the optimization of load-bearing performance in novel aluminum alloy modular joints with a centrally reinforced annular structure through refined finite element modeling using ABAQUS. A systematic analysis is conducted to evaluate the coupled effects of key parameters, including modular unit thickness, annular reinforcement plate thickness, bottom stiffener thickness, and asymmetric bolt configurations. The results demonstrate that doubling the base plate thickness of modular units (relative to the top plate) combined with 10-mm-thick bottom stiffeners achieves an 11.98% improvement in ultimate load capacity and an 18.37% reduction in joint displacement. Parametric bolt configuration analysis reveals that an optimized asymmetric layout—adjusting bolt quantities in flange and web regions—effectively homogenizes stress distribution while eliminating construction redundancy. Load-displacement curves confirm the significant contribution of bottom stiffeners to stiffness enhancement, exhibiting complete envelopment of rigid unit responses and a pronounced increase in initial stiffness. Sensitivity analysis highlights a strong positive correlation between base plate thickness/stiffener thickness and load capacity gains, whereas excessive bolt deployment in the web region yields only marginal improvements (a 3.57% capacity increase), emphasizing the prioritization of critical component optimization. These findings provide theoretical and empirical foundations for the precise design of high-performance aluminum alloy modular joints.
| [1] |
钱基宏,赵鹏飞,郝成新,大跨度铝合金穹顶网壳结构的研究[J].建筑科学,2000,16(5):7-12.DOI:10.13614/j.cnki.11-1962/tu.2000.05.002. |
| [2] |
QIAN Jihong,ZHAO Pengfei,HAO Chengxin,et al.Development study on large span aluminum alloy dome structure[J].Building Science,2000,16(5):7-12.DOI:10.13614/j.cnki.11-1962/tu.2000.05.002.(in Chinese) |
| [3] |
郭小农,熊哲,罗永峰,铝合金板式节点初始刚度[J].同济大学学报(自然科学版),2014,42(8):1161-1166.DOI:10.3969/j.issn.0253-374x.2014.08.003. |
| [4] |
GUO Xiaonong,XIONG Zhe,LUO Yongfeng,et al.Initial bending stiffness of aluminum alloy gusset joint[J].Journal of Tongji University (Natural Science),2014,42(8):1161-1166.DOI:10.3969/j.issn.0253-374x.2014.08.003.(in Chinese) |
| [5] |
郭小农,熊哲,罗永峰,铝合金板式节点承载力设计方法及构造要求[J].同济大学学报(自然科学版),2015,43(1):47-53.DOI:10.11908/j.issn.0253-374x.2015.01.007. |
| [6] |
GUO Xiaonong,XIONG Zhe,LUO Yongfeng,et al.The design method and detailed requirements of bearing capacity of aluminum alloy gusset joint[J].Journal of Tongji University (Natural Science),2015,43(1):47-53.DOI:10.11908/j.issn.0253-374x.2015.01.007.(in Chinese) |
| [7] |
郭小农,朱劭骏,王丽,铝合金板式节点平面内抗弯刚度研究[J].建筑结构,2018,48(14):34-39.DOI:10.19701/j.jzjg.2018.14.007. |
| [8] |
GUO Xiaonong,ZHU Shaojun,WANG Li,et al.Study on in-plane bending stiffness of aluminum alloy gusset joint[J].Building Structure,2018,48(14):34-39.DOI:10.19701/j.jzjg.2018.14.007.(in Chinese) |
| [9] |
尹建,柳晓晨,欧阳元文.铝合金板式节点角铝加固设计与分析[J].建筑结构,2018,48(14):40-43,39.DOI:10.19701/j.jzjg.2018.14.008. |
| [10] |
YIN Jian,LIU Xiaochen,OUYANG Yuanwen.Angle aluminum reinforcing design and analysis of aluminum alloy gusset joints[J].Building Structure,2018,48(14):40-43,39.DOI:10.19701/j.jzjg.2018.14.008.(in Chinese) |
| [11] |
周赟文,赵才其.新型模块化单层铝合金网壳节点的试验研究[J].建筑钢结构进展,2021,23(11):72-81.DOI:10.13969/j.cnki.cn31-1893.2021.11.009. |
| [12] |
ZHOU Yunwen,ZHAO Caiqi.Experimental study on a novel modular joint in single-layer aluminum alloy reticulated shell[J].Progress in Steel Building Structures,2021,23(11):72-81.DOI:10.13969/j.cnki.cn31-1893.2021.11.009.(in Chinese) |
| [13] |
周赟文,赵才其.新型模块化单层铝合金网壳节点的弹塑性分析[J].建筑结构,2022,52(6):44-48.DOI:10.19701/j.jzjg.20200162. |
| [14] |
ZHOU Yunwen,ZHAO Caiqi.Elastic-plastic analysis of new modular single-layer aluminum alloy reticulated shell joints[J].Building Structure,2022,52(6):44-48.DOI:10.19701/j.jzjg.20200162.(in Chinese) |
| [15] |
GB 50429—2007 铝合金结构设计规范[S]. |
| [16] |
GB 50429—2007 Code for design of aluminium structures[S].(in Chinese) |
| [17] |
GB/T 3098.6—2014 紧固件机械性能 不锈钢螺栓、螺钉和螺柱[S]. |
| [18] |
GB/T 3098.6—2014 Mechanical properties of fasteners—Stainless steel Bolts,screws and studs[S].(in Chinese) |
| [19] |
郭小农,邱丽秋,罗永峰,铝合金板式节点受弯承载力试验研究[J].湖南大学学报(自然科学版),2014,41(4):47-53. |
| [20] |
GUO Xiaonong,QIU Liqiu,LUO Yongfeng,et al.Experimental research on the bending capacity of aluminum alloy gusset joints[J].Journal of Hunan University (Natural Sciences),2014,41(4):47-53.(in Chinese) |
| [21] |
史典鹏.铝合金蜂窝板单层组合网壳新型节点的理论分析及试验研究[D].南京:东南大学,2017. |
| [22] |
SHI Dianpeng.Theoretical analysis and experimental study on new joint of single-layer composite aluminum alloy honeycomb panel latticed shell[D].Nanjing:Southeast University,2017.(in Chinese) |
江西省自然科学基金(20232BAB214069)
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