Page 242 - 《振动工程学报》2025年第9期
P. 242

第 38 卷第 9 期                       振 动 工 程 学 报                                       Vol. 38 No. 9
               2025 年  9 月                     Journal of Vibration Engineering                       Sept. 2025



                      混   合    基   础   隔   震    预   制   装   配   式    高   层   建   筑   抗    震   性   能



                                          李春祥, 桑增礼, 曹黎媛, 王振洲

                                             (上海大学力学与工程科学学院,上海 200444)


              摘要:为探究多种耗能装置联合的混合基础隔震系统对预制装配式高层建筑的减隔震效果,提出了联合使用屈曲约束支撑
              (BRB)、非线性液体黏滞阻尼器(NFVD)和基础隔震系统(BIS)的混合基础隔震系统(BRB+NFVD+BIS)。定义了                          BRB  屈服强
              度与隔震支座屈服强度比         BIR  和  NFVD  总阻尼系数  α  与隔震支座屈服强度比      NIR  两个参数。通过结构-混合基础隔震系统的
              动力弹塑性地震响应分析,揭示了            BIR、NIR  和  NFVD  参数对设置  BRB+NFVD+BIS  高层建筑抗震性能的影响规律,并建议了
              BIR、NIR  和  NFVD  参数的取值范围。结果表明:与非隔震预制装配式高层建筑相比,BRB+NFVD+BIS                    系统可明显提升梁-柱
              节点抗震性能,减小上部结构层间位移角和楼层加速度;与隔震预制装配式高层结构相比,BRB+NFVD+BIS                                系统可明显减小
              隔震层位移,梁-柱节点抗震性能、上部结构层间位移角和楼层加速度彼此基本接近。因此,BRB+NFVD+BIS                               系统具有更好的
              隔震层位移控制能力。同时,结果表明             BRB+NFVD+BIS  系统具有更好的减隔震鲁棒性。
              关键词: 混合基础隔震;预制装配式建筑;屈曲约束支撑;非线性液体黏滞阻尼器;BIR;NIR;抗震性能
              中图分类号:TU352        文献标志码:A        DOI:10.16385/j.cnki.issn.1004-4523.202310025



                               Seismic performance of prefabricated high-rise buildings
                                            with hybrid base isolated systems

                                      LI Chunxiang,SANG Zengli,CAO Liyuan,WANG Zhenzhou
                             (School of Mechanics and Engineering Sciences,Shanghai University,Shanghai 200444,China)

              Abstract:The present paper proposes an hybrid base isolation system referred to as BRB+NFVD+BIS,consisting of the buckling restrained
              braces (BRB),nonlinear fluid viscous dampers (NFVD),and base isolation system (BIS) to study both the damping and isolation effects of
              the hybrid base isolation system on prefabricated high-rise buildings. Defined are the ratios of both BRB yield strength to base isolation yield
              strength and the total damping index of NFVD to base isolation yield strength,respectively designate as BIR and NIR. Based on the dynamic
              elastic-plastic  seismic  response  analysis  of  the  corresponding  systems, the  effects  of  BIR, NIR, and  NFVD  parameters  on  the  seismic
              performance of BRB+NFVD+BIS tall buildings have been revealed,and the ranges of BIR,NIR,and NFVD parameters are suggested.
              Results  demonstrate  that  with  respect  to  the  non-isolated  prefabricated  high-rise  buildings, the  BRB+NFVD+BIS  system  can  significantly
              enhance  the  seismic  performance  of  beam-column  connections, reduce  both  the  inter-story  drift  ratios  and  floor  accelerations  of  the
              superstructure. Compared with the base-isolated prefabricated high-rise structures,the BRB+NFVD+BIS system substantially reduces base
              isolation layer displacement while maintaining almost the same seismic performance to each other in terms of the beam-column connections,
              inter-story  drift  ratios, and  floor  accelerations  Therefore, the  BRB+NFVD+BIS  system  processes  better  displacement  control  ability  of
              isolation layer. Simultaneously,the results show that the BRB+NFVD+BIS system has better robustness of both the seismic mitigation and
              isolation.

              Keywords:hybrid  base  isolation; prefabricated  buildings; buckling  restrained  braces; nonlinear  fluid  viscous  dampers; BIR; NIR; seismic
                      performance


                  预制装配式建筑由于施工质量高、实施方便快                          筑由于其连接部位(预制节点核心区)的脆性破坏可
              捷,可以减少投资和运营间的时间差距 。在实施                            能致使其失去承载能力,而这时其框架构件的塑性
                                                  [1]
              中,预制混凝土结构会遇到一个重要问题,即如何将                           变形未充分发展,地震能量不能被有效的消耗 。使
                                                                                                         [2]
              预制梁构件更合理地连接到柱上。以往地震经验表                            用基础隔震技术可以提升预制节点核心区和预制装
              明:在预制装配式建筑中,梁-柱节点对其抗震性能                           配式建筑整体抗震性能。基础隔震系统(BIS)的基
              的影响不可忽视;在强烈地震作用下,预制装配式建                           本原理    [3]  为:通过在上部结构和基础之间插入侧向


                  收稿日期:2023-10-12;修订日期:2023-12-19
                  基金项目:上海市“科技创新行动计划”扬帆计划项目(21YF1412700)
   237   238   239   240   241   242   243   244   245   246   247