基于有限元数值分析的木结构抗震性能分析及其在建筑中的应用
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摘要
为了提高木结构抗震性能分析的精度,采用多尺度建模分析方法对木结构进行抗震分析。利用多点约束方法分别将榫卯节点和梁柱构件设定为关键区域和非关键区域。采用多尺度的建模思想,对关键区域采用实体单元进行精细尺度建模,而非关键区域则采用梁单元进行普通尺度建模,再通过不同尺度实现宏观结构模型和局部微观模型的相互协调,比较不同尺度下的实体单元和梁单元建模在抗震中的性能。实验结果表明,多尺度的有限元数值分析能够模拟木结构的整体动力响应和精确分析边界条件。通过多尺度、大范围的分级建模能够构建局部和全局的抗震性能分析的过程,精度较高,可提升抗震分析的效率。
To improve the accuracy of seismic performance analysis of wooden structures, a multi-scale modeling analysis method was used in this paper. By using the multi-point constraint method, the mortise-tenon joints and beam-column members were set as the critical and non-critical regions, respectively. Based on the idea of multi-scale modeling, solid elements were adopted for fine-scale modeling in key areas, while beam elements were used for ordinary-scale modeling in non-critical areas. The coordination of macro-structure model and local micro-model could then be realized on different scales, and the seismic performances of solid elements and beam elements in modeling under different scales were compared. The experimental results showed that the multi-scale finite element numerical analysis can simulate the overall dynamic response of wooden structures and accurately analyze the boundary conditions. Through multi-scale and large-scale hierarchical modeling, local and global seismic performance analyses can be conducted, which are highly accurate and can improve the efficiency of seismic analysis.
To improve the accuracy of seismic performance analysis of wooden structures, a multi-scale modeling analysis method was used in this paper. By using the multi-point constraint method, the mortise-tenon joints and beam-column members were set as the critical and non-critical regions, respectively. Based on the idea of multi-scale modeling, solid elements were adopted for fine-scale modeling in key areas, while beam elements were used for ordinary-scale modeling in non-critical areas. The coordination of macro-structure model and local micro-model could then be realized on different scales, and the seismic performances of solid elements and beam elements in modeling under different scales were compared. The experimental results showed that the multi-scale finite element numerical analysis can simulate the overall dynamic response of wooden structures and accurately analyze the boundary conditions. Through multi-scale and large-scale hierarchical modeling, local and global seismic performance analyses can be conducted, which are highly accurate and can improve the efficiency of seismic analysis.
引文
[1] 高永林,陶忠,叶燎原,等.带有黏弹性阻尼器穿斗木结构振动台试验研究[J].振动与冲击,2017,36(1):240-247,260.GAO Yonglin,TAO Zhong YE Liaoyuan,et al.Shaking Table Tests for a Chuan-dou Timber Building with Viscoelastic Dampers[J].Journal of Vibration and Shock,2017,36(1):240-247,260.
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[11] 刘嘉英,马刚,周伟,等.抗转动特性对颗粒材料分散性失稳的影响研究[J].岩土力学,2017,38(5):1472-1480.LIU Jiaying,MA Gang,ZHOU Wei,et,al.Impact of Rotation Resistance on Diffuse Failure of Granular Materials[J].Rock and Soil Mechanics,2017,38(5):1472-1480.
[12] 张阳,李少波,穆程,等.覆土波形钢板拱桥工作性能数值分析[J].公路工程,2016,41(4):102-107.ZHANG Yang,LI Shaobo,MU Cheng,et al.Numerical Analysis on Working Performance of Buried Corrugated Steel Arch Bridge[J].Highway Engineering,2016,41(4):102-107.
[13] 高大峰,祝松涛,丁新建.西安永宁门箭楼结构及抗震性能分析[J].山东大学学报(工学版),2013,43(2):62-69.GAO Dafeng,ZHU Songtao,DING Xinjian.Analysis of Structural and Seismic Performance of Yongning Gate Embrasured Watchtower of Xi' an City Wall[J].Journal of Shandong University of Technology,2013,43(2):62-69.
[14] 李晶波.架空直立式码头ansys刚度退化抗震分析[J].建筑工程技术与设计,2015,(16):1773-1773.LI Jingbo.Aseismic Analysis of Rigidity Degradation of ANSYS for Overhead Vertical Wharf[J].Architectural Engineering Technology and Design,2015,(16):1773-1773.
[15] 耿方方,李亚东,赵昕,等.节点域刚度对装配整体式混凝土框架结构抗震性能的影响[J].科学技术与工程,2018,18(27):187-192.GENG Fangfang,LI Yadong,ZHAO Xin,et al.Influence of Connection’s Stiffness on Seismic Performance of Assembled Monolithic Reinforced Concrete Frame Structure[J].Science Technology and Engineering,2018,18(27):187-192.
[2] 周乾,闫维明,周锡元,等.古建筑榫卯节点抗震性能试验[J].振动、测试与诊断,2011,31(6):679-684.ZHOU Qian,YAN Weiming,ZHOU Xiyuan,et al.Seismic Performance Test of Tenon-mortise Joints in Ancient Buildings[J].Journal of Vibration Measurement & Diagnosis,2011,31(6):679-684.
[3] 熊海贝,欧阳禄,吴颖,等.国外高层木结构研究综述[J].同济大学学报(自然科学版),2016,44(9):1297-1306.XIONG Haibei,OUYANG Lu,WU Ying,et al.State-of-the-art Research of Tall Wood Buildings[J].Journal of Tongji University (Natural Science),2016,44(9):1297-1306.
[4] 谢启芳,郑培君,向伟,等.残损古建筑木结构单向直榫榫卯节点抗震性能试验研究[J].建筑结构学报,2014,35(11):143-150.XIE Qifang,ZHENG Peijun,XIANG Wei,et al.Experimental Study on Seismic Behavior of Damaged Straight Mortise-tenon Joints of Ancient Timber Buildings[J].Journal of Building Structures,2014,35(11):143-150.
[5] 周乾,闫维明,纪金豹,等.抬梁式木构古建榫卯节点受弯破坏数值分析[J].工程抗震与加固改造,2015,37(2):22-28.ZHOU Qian,YAN Weiming,JI Jinbao,et al.Damage Types of Tenon-mortise Joints of Chinese Ancient Post and Lintel Structure under Bending Loads by Simulation[J].Earthquake Resistant Engineering and Retrofitting,2015,37(2):22-28.
[6] 谢启芳,杜彬,李双,等.残损古建筑木结构燕尾榫节点抗震性能试验研究[J].振动与冲击,2015,(4):165-170,210.XIE Qifang,DU Bin,LI Shuang,et al.Tests for Aseismic Behaviors of Damaged Dovetail Mortise-tenon Joints of Ancient Timber Buildings[J],Journal of Vibration and Shock,2015,(4):165-170,210.
[7] 段春辉,郭小东,吴洋,等.基于残损特点的古建筑木结构修复加固[J].工程抗震与加固改造,2014,36(1):126-130.DUAN Chunhui,GUO Xiaodong,WU Yang,et al.Repairing and Strengthening of Ancient Wood Structure on the Basis of Damage Characteristics[J].Earthquake Resistant Engineeringand Retrofitting,2014,36(1):126-130.
[8] 田甜,邱文亮,张哲.混合桥墩抗震性能试验研究[J].河海大学学报(自然科学版),2017,45(6):528-534.TIAN Tian,QIU Wenliang,ZHANG Zhe.Experimental Study on the Seismic Behavior of Hybrid Bridge Column[J].Journal of Hohai University (Natural Sciences),2017,45(6):528-534.
[9] 倪永军,李钊,杨娜,等.“站桥合一”式车站结构抗震性能评估的简化方法[J].振动与冲击,2014,(5):137-142.NI Yongjun,LI Zhao,YANG Na,et al.Simplified Evaluation Method for Seismic Performance of Integrated Station-bridge Structures[J].Journal of Vibration and Shock,2014,(5):137-142.
[10] 王念,高群,黄心深,等.轻型电动客车榫卯结构骨架仿真分析[J].机械设计与制造,2015(5):181-184,188.WANG Nian,GAO Qun,HUANG Xinshen,et al.Simulation Analysis of Light Electric Bus Mortise and Tenon Joint Structure Frame[J].Machinery Design & Manufacture,2015(5):181-184,188.
[11] 刘嘉英,马刚,周伟,等.抗转动特性对颗粒材料分散性失稳的影响研究[J].岩土力学,2017,38(5):1472-1480.LIU Jiaying,MA Gang,ZHOU Wei,et,al.Impact of Rotation Resistance on Diffuse Failure of Granular Materials[J].Rock and Soil Mechanics,2017,38(5):1472-1480.
[12] 张阳,李少波,穆程,等.覆土波形钢板拱桥工作性能数值分析[J].公路工程,2016,41(4):102-107.ZHANG Yang,LI Shaobo,MU Cheng,et al.Numerical Analysis on Working Performance of Buried Corrugated Steel Arch Bridge[J].Highway Engineering,2016,41(4):102-107.
[13] 高大峰,祝松涛,丁新建.西安永宁门箭楼结构及抗震性能分析[J].山东大学学报(工学版),2013,43(2):62-69.GAO Dafeng,ZHU Songtao,DING Xinjian.Analysis of Structural and Seismic Performance of Yongning Gate Embrasured Watchtower of Xi' an City Wall[J].Journal of Shandong University of Technology,2013,43(2):62-69.
[14] 李晶波.架空直立式码头ansys刚度退化抗震分析[J].建筑工程技术与设计,2015,(16):1773-1773.LI Jingbo.Aseismic Analysis of Rigidity Degradation of ANSYS for Overhead Vertical Wharf[J].Architectural Engineering Technology and Design,2015,(16):1773-1773.
[15] 耿方方,李亚东,赵昕,等.节点域刚度对装配整体式混凝土框架结构抗震性能的影响[J].科学技术与工程,2018,18(27):187-192.GENG Fangfang,LI Yadong,ZHAO Xin,et al.Influence of Connection’s Stiffness on Seismic Performance of Assembled Monolithic Reinforced Concrete Frame Structure[J].Science Technology and Engineering,2018,18(27):187-192.