[1]刘英棨,李航,汪威,等.木构古建筑摇摆类比模型震能辅助动态复位研究[J].西安建筑科技大学学报(自然科学版),2024,56(05):762-772.[doi:10.15986.j.1006-7930.2024.05.015]
　LIU Yingqi,LI Hang,WANG Wei,et al.Dynamic resetting responses of the ancient-timber-building-inspired simultaneous rocking model facilitated by post-peak seismic energy[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2024,56(05):762-772.[doi:10.15986.j.1006-7930.2024.05.015]
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木构古建筑摇摆类比模型震能辅助动态复位研究
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
56
期数:
2024年05期
页码:
762-772
栏目:
出版日期:
2024-10-28

文章信息/Info

Title:
Dynamic resetting responses of the ancient-timber-building-inspired simultaneous rocking model facilitated by post-peak seismic energy
文章编号:
1006-7930(2024)05-0762-11
作者:
刘英棨1; 2; 李航1; 汪威1; 梁枫3; 张锡成4
（1武汉理工大学 交通与物流工程学院，湖北 武汉 430074；2中铁大桥院桥梁绿色与智能建造全国重点实验室，湖北 武汉 430034；3香港大学 工学院，香港 999077；4西安建筑科技大学 土木工程学院，陕西 西安 710055）
Author(s):
LIU Yingqi1; 2;  LI Hang1;  WANG Wei1;  LIANG Feng3;  ZHANG Xicheng4
（1School of Transportation and Logistics Engineering, Wuhan University of Technology, Wuhan 430074, China;
2China Railway Major Bridge Reconnaissance&Design Institute Co., Ltd., Wuhan 430034, China;
3Faculty of Engineering, The University of Hong Kong, Hong Kong 999077, China;
4School of Civil Engineering, Xi′an Univ. of Arch. & Tech., Xi′an 710055, China）
关键词:
刚体动力模型; 韧性摇摆体系 ; 滑移时程响应; 木构古建筑; 动态复位
Keywords:
rigid body dynamics;  rocking system;  sliding history;  ancient timber structures;  resetting behavior
分类号:
TU366.2
DOI:
10.15986.j.1006-7930.2024.05.015
文献标志码:
A
摘要:
木构古建筑结构体系复杂，其立柱设置受“侧脚”与“生起”构造要求制约，地震作用下将触发同层柱群摇摆行为，从而在各层楼板间形成双向缓坡滑移结构体系，抵御地震侵袭.为探究中国木构古建筑在地震作用下的耦合滑移响应，利用W型界面滑块建立双向缓坡滑移结构体系类比“理论”模型，设置滑动面库仑摩擦系数表征体系滑动阻尼，选取40条近场水平地震波，并依据峰值地震加速度（PGA）数值及其时刻划分地震波“峰时”及“峰后”阶段参数，运用刚体运动学数值积分提高实时滑移计算精度，开展类比模型多参数动力滑移时程响应分析.研究结果表明：各类型近场水平地震作用下，具有3°缓坡和005界面摩擦系数的类比模型的最大相对滑移均发生在相应地震的“峰时”阶段，且幅值均小于对应地震峰值位移（PGD）幅值的2倍，并且PDG对低摩擦类比模型地震耦合滑移行为影响显著；各地震“峰后”残余能量可有效辅助缓坡刚体滑块动态复位，3~5°W型缓坡搭配003~006界面摩擦系数时效果最佳.
Abstract:
To investigate the coupled seismic sliding responses and the possible application of this system, its equivalent analytical model is established in this study by using Wshaped sliding block and coulomb law of friction. Forty nearfield horizontal seismic waves are selected, and the parameters of ‘peak stage’ and ‘postpeak stage’ of seismic waves are divided according to the peak seismic acceleration (PGA ) value and its time. The precision of realtime sliding calculation is achieved using rigid body dynamic analysis and the parametric studies on the dynamic sliding time history performances are conducted. The results suggest that: 1) for a Wshaped sliding block with 3° inclination and 0.05 coefficient of friction at the interface, the maximum relative sliding displacements always occur during peak stage of individual ground motions, while the values are strongly associated with peakground displacement (PGD) and are kept below 2 times of that PGD in individual ground motions. 2) The seismic energy at ‘postpeak’ stage of earthquakes indeed facilitates dynamic selfcentering responses, i.e. resetting behavior, of the sliding block, and the most favorable performances can be achieved within inclination and coefficient of friction as 3~5 degrees and 0.03~0.06, respectively.

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备注/Memo

备注/Memo:
收稿日期:20240531修回日期:20240903
基金项目:科技部重点研发计划(2023YFC3806800); 中央高校基本科研业务费专项资金资助(233102006)
第一作者:刘英棨(1991—)，男，博士，讲师，主要从事韧性抗震结构体系研究.Email: selbyliu@outlookcom
更新日期/Last Update: 2024-11-22