(北京市建筑设计研究院有限公司, 北京 100062)

摘要: 既有建筑为原北京市商标厂印刷车间,改造后功能为小学校教学楼,采用黏滞阻尼器进行消能减震加固.对与消能减震部件相连的构件进行加固,其他部位仅需要少量加固即可满足抗震性能要求,减少了对结构构件的直接加固的工作量. 采用 SAP2000 软件对结构进行小震下 FNA(快速非线性)时程分析,为校核计算附加阻尼比的准确性,对比了一周能量比法和模态耗能比法的计算结果. 采用 SUASAGE 软件对结构进行大震弹塑性时程分析,验算加固后结构抗震性能,并对子结构进行设计. 分析结果表明,设置黏滞阻尼器对既有建筑进行消能减震加固改造,黏滞阻尼器耗能作用明显,避免了大范围的结构构件加固工作;应采用不同计算方法复核,保证附加阻尼比计算的准确性.

关键词: 既有建筑改造; 消能减震加固; 黏滞阻尼器; 附加阻尼比

中图分类号:TU318 文献标志码:A 文章编号:1002-848X(2023)08-0090-05

DOI:10. 19701 / j. jzjg. 20220477

Application of energy dissipation reinforcement technology in an existing building transformation project

GUAN Yu

(Beijing Institute of Architectural Design, Beijing 100062, China)

Abstract: The existing building is the printing workshop of Beijing Trademark Factory. After the reconstruction, thefunction is the primary school teaching building. The fluid viscous damper was used for energy dissipation reinforcement.The members connected to the energy dissipation and damping components were reinforced,and the other parts only need asmall amount of reinforcement to meet the seismic performance requirements, reducing the workload of direct reinforcementof structural members. SAP2000 software was used to carry out FNA (fast nonlinear analysis) time-history analysis of thestructure under frequent earthquakes. In order to check the accuracy of the calculation of the additional damping ratio, thecalculation results of the one-cycle energy ratio method and the modal energy ratio method were compared. SUASAGEsoftware was used to carry out rare occurrence earthquake elastic-plastic time-history analysis of the structure. The seismicperformance of the strengthened structure was checked, and the substructure was designed. The analysis results show thatthe fluid viscous damper has an obvious effect on energy dissipation of existing buildings, which avoids a large range ofstructural member reinforcement. Different calculation methods should be adopted for recheck to ensure the accuracy of thecalculation of additional damping ratio.

Keywords: existing building transformation; energy dissipation reinforcement; fluid viscous damper; additionaldamping ratio

作者简介:关宇,硕士,高级工程师,一级注册结构工程师,主要从事建筑工程结构设计,Email:612624@ qq. com.

[引用本文] 关宇. 消能减震加固技术在既有建筑改造工程中的应用[ J]. 建筑结构,2023,53(8):90-94. GUANYu. Application of energy dissipation reinforcement technology in an existing building transformation project[J]. BuildingStructure,2023,53(8):90-94.