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[1]杜永峰,池佩红.PC隔震框架预制单元拆分及整体结构地震损伤分析[J].建筑科学与工程学报,2020,37(03):28-36.[doi:10.19815/j.jace.2019.05014]
 DU Yong-feng,CHI Pei-hong.Precast Component Division and Seismic Damage Analysis of PC Isolated Frame[J].Journal of Architecture and Civil Engineering,2020,37(03):28-36.[doi:10.19815/j.jace.2019.05014]
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PC隔震框架预制单元拆分及整体结构地震损伤分析(PDF)
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
37卷
期数:
2020年03期
页码:
28-36
栏目:
出版日期:
2020-05-30

文章信息/Info

Title:
Precast Component Division and Seismic Damage Analysis of PC Isolated Frame
文章编号:
1673-2049(2020)03-0028-09
作者:
杜永峰12池佩红1
(1. 兰州理工大学 防震减灾研究所,甘肃 兰州 730050; 2. 兰州理工大学 甘肃省减震隔震国际合作研究基地,甘肃 兰州 730050)
Author(s):
DU Yong-feng12 CHI Pei-hong1
(1. Institute of Earthquake Protection and Disaster Mitigation, Lanzhou University of Technology, Lanzhou 730050, Gansu, China; 2. International Research Base on Seismic Mitigation and Isolation of Gansu Province, Lanzhou University of Technology, Lanzhou 730050, Gansu, China)
关键词:
PC隔震框架 预制构件拆分 抗震性能 层间位移角 结构损伤
Keywords:
PC isolated frame precast component division seismic performance inter-story drift angle structural damage
分类号:
TU352.1
DOI:
10.19815/j.jace.2019.05014
文献标志码:
A
摘要:
为研究不同预制单元拆分方式对装配式混凝土(PC)隔震框架抗震性能的影响,考虑预制构件节点拼接位置的不同,选取了3种PC隔震框架预制构件的拆分方式,即梁柱节点与梁柱整体预制的拆分方式1、多层柱与节点整体预制的拆分方式2以及传统梁柱节点区后浇的拆分方式3。利用有限元软件ABAQUS分别建立了采用3种不同拆分方式的5层装配式隔震框架PCIF-1,PCIF-2,PCIF-3及对应的现浇隔震框架RCIF,并对地震作用下结构变形、层间位移角和结构损伤耗能等进行了对比分析。结果表明:相较现浇结构,装配式结构刚度较弱,罕遇地震作用下,装配式隔震框架层间位移和隔震支座变形增大,上部结构损伤更为严重,隔震层损伤略微增加; 不同拆分方式下,装配式隔震框架损伤程度和位置分布不同,现浇结构集中于底层柱端,装配式结构连接界面处较为薄弱,应力较大; 采用拆分方式1,2的装配式隔震框架PCIF-1和PCIF-2均满足抗震需求,受力性能良好; 综合考虑结构受力和施工方便,建议采用拆分方式1对装配式隔震框架进行预制构件拆分。
Abstract:
In order to study the effect of different precast member division methods on seismic performance of precast concrete(PC)isolation frame, three precast component division modes of PC isolation frame were selected considering different joint connect positions. Division mode 1 was integral prefabrication of beam-column joints, division mode 2 was integral prefabrication of multi-story columns and joints, division mode 3 was traditional post-poured connection of beam-column joints. By using the finite element software ABAQUS,PCIF-1, PCIF-2,PCIF-3 and the corresponding cast-in-place concrete isolated frame RCIF of five-story assembled isolation frame with three different division modes were established respectively, the structural deformation, inter-story drift angle and damage energy dissipation under earthquake were compared and analyzed. The results show that compared with cast-in-place concrete isolated frame,the stiffness of PC isolated frame is weaker. Under the rare earthquake, the inter-story displacement and bearing deformation of assembled isolation frame increase, the damage of superstructure is more serious, and the damage of isolation layer increases slightly. Under different division modes, the damage situation and location distribution of PC isolated frames are different. The cast-in-place structure is concentrated in the bottom column ends, and the connection interface of the assembled structure is relatively weak and the stress is relatively large. The PC isolated frames PCIF-1 and PCIF-2 can satisfy the seismic requirements and have good mechanical performance. Considering of the stress of the structure and the convenience of construction, it is suggested to use division mode 1 to split the precast component of the PC isolated frame.

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备注/Memo

备注/Memo:
收稿日期:2019-08-07
基金项目:国家自然科学基金项目(51778276); 甘肃省重点研发计划项目(18YF1FA067)
作者简介:杜永峰(1962-),男,甘肃庆阳人,教授,博士研究生导师,工学博士,E-mail:dooyf@lut.cn。
更新日期/Last Update: 2020-06-08