[1]YU Jian,ZHAO Licai.Research on Damping Performance Design of BRB Frame-shear Structure by Near-fault Pulse-like Ground motions[J].Journal of Seismological Research,2023,46(04):575-585.[doi:10.20015/j.cnki.ISSN1000-0666.2023.0051]
Copy
Research on Damping Performance Design of BRB Frame-shear Structure by Near-fault Pulse-like Ground motions
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
46
Number of periods:
2023 04
Page number:
575-585
Column:
Public date:
2023-12-01
- Title:
- Research on Damping Performance Design of BRB Frame-shear Structure by Near-fault Pulse-like Ground motions
- Keywords:
- pulse-like ground motion; frame-shear structure; buckling restrained braces; damping performance
- CLC:
- P315.925
- DOI:
- 10.20015/j.cnki.ISSN1000-0666.2023.0051
- Abstract:
- Pulse-like ground motions exert extremely strong destructive force on building structures.The elastic-plastic dynamic time-history analysis of the typical frame-shear structure and several buckling restrained braces(BRB)shock-absorbing design structures subjected to the pulse-like and non-pulse-like ground motions is carried out.Based on the story drift ratio,the structural damage degree,and the structural energy consumption index,the seismic performance of different BRB frame-shear structures is compared and analyzed.The analysis shows that,due to the improvement of lateral stiffness,the added BRB can help to effectively reduce the story drift ratio response of the frame-shear structure subjected to the pulse-like ground motions,and make the structure meet the limit requirement in the Code.Instead of being arranged on the periphery,the BRB arranged in the inner frame of the shock-absorbing structure can help to reduce more effectively the serious damage to the upper-floor beam members of the structure subjected to the pulse-like ground motions,and reduce the proportion of the serious damage to the beam members from 71% to less than 45% as a whole,and effectively reduce the moderate- and serious-damage to the vertical members.Pulse-like ground motions can weaken the plastic energy-dissipation capacity of BRB in shock-absorbing structures while the non-pulse-like ground motions cannot.In general,when the structure is arranged with BRB in the inner frame,and the structure’s initial stiffness and yield strength are divided by more floor zones,the smaller post-yield stiffness ratio would show higher damping performance subjected to the pulse-like ground motions.
- References:
-
包嗣海,汪大洋,汪天雷,等.2019.极罕遇地震下框剪结构的混合减震控制[J].广西大学学报(自然科学版),44(3):765-775.
陈超,陈鑫,俞伟根,等.2021.近断层速度脉冲型地震动对多层校舍减震加固性能影响研究[J].工程抗震与加固改造,43(3):95-103.
程浩,赵杨.2021.近断层脉冲型地震作用下BRB减震高层建筑结构抗震性能分析[J].建筑结构,51(S1):868-874.
崔济东.2017.PERFORM-3D原理与实例[M].北京:中国建筑工业出版社.
丁玉春,朱晞.2007.地震动中输入能量的探讨[J].北京交通大学学报,31(4):49-51.
贾路,阮鑫鑫,刘章军.2019.近断层脉冲型地震动的降维模拟[J].地震研究,42(4):516-522.
谢俊举,温增平,李小军,等.2012.基于小波方法分析汶川地震近断层地震动的速度脉冲特性[J].地球物理学报,55(6):1963-1972.
徐铭阳,王丛,董尧,等.2022.极罕遇地震作用下建筑结构一致风险抗倒塌设计方法研究[J].建筑结构学报,43(7):253-263.
周敏,薛彦涛.2017.BRB钢筋混凝土框架结构罕遇、极罕遇地震弹塑性分析[J].建筑科学,33(5):25-30.
周敏.2017.BRB框架结构罕遇、极罕遇地震下倒塌性能研究[D].北京:中国建筑科学研究院.
Lu M,Li X J,An X W,et al.2010.A preliminary study on the near-source strong-motion characteristics of the great 2008 Wenchuan Earthquake in China[J].Bulletin of the Seismological Society of America,100(5B):2490-2507.
Scott B D,Park R,Priestley M.1982.Stress-strain behavior of concrete confined by overlapping hoops at low and high strain rates[J].Aci Journal,79(1):13-27.
CECS 392—2014,建筑结构抗倒塌设计规范[S].
GB 50010—2010,混凝土结构设计规范[S].
GB 50011—2010,建筑抗震设计规范[S].
JGJ 3—2010,高层建筑混凝土结构技术规程[S].
- Similar References:
Memo
-
Last Update:
2023-10-01