（1 海南柏森建筑设计有限公司， 海口 570125；  2 上海堃熠工程减震科技有限公司， 上海 201114）

［摘要］某已有建筑为工作车间，现改造为门诊大楼。对加固改造的整体结构方案进行了综合比较分析，最终采用了基于剪切型金属消能器的消能减震加固改造方案，采用反应谱分析和小震弹性时程分析两种方法分别计算并复核了小震下的附加阻尼比和附加刚度，根据减震计算结果进行了主体结构设计。对该方案进行了罕遇地震作用下的弹塑性分析，对加固后的结构在大震下的抗震性能进行了评估，同时根据罕遇震下消能器的出力和消能子结构的内力，确定了消能器的设计位移并进行了消能子结构的设计。消能器的连接形式及节点设计均根据主体结构加固方案做了针对性优化。

［关键词］加固改造； 消能减震技术； 剪切型金属消能器； X形支撑连接

中图分类号：TU746-3， TU318文献标识码：A文章编号：1002-848X(2020)09-0121-06

Strengthening design for reconstruction project of an outpatient building based on energy dissipation technology

ZHANG Ming1, BIAO Fangjun2

(1 Hainan Person Architectural Design Co., Ltd., Haikou 570125， China；2 Shanghai Kunyi Seismic Damping Technology Co., Ltd., Shanghai 201114， China)

Abstract:An existing building is a workshop, which is now transformed into an outpatient building. A comprehensive comparison and analysis of the overall structural scheme of the strengthening and reconstruction was adopted. Finally, the energy dissipation strengthening and reconstruction scheme based on shear type metal energy dissipater was adopted. The response spectrum analysis and the elastic time-history analysis under  frequent earthquake were conducted to calculate and review the additional damping ratio and additional stiffness under  frequent earthquake. The main structure was designed based on the calculation results of energy dissipation. The elasto-plastic analysis of the scheme under rare earthquakes was performed, and the seismic performance of the strengthened structure under rare earthquakes was evaluated. At the same time, according to the output of the energy dissipater and the internal force of the energy dissipation substructure under rare earthquakes, the design displacement of the energy dissipater was determined and the energy dissipating substructure was designed. The connection form and joint design of the energy dissipater were optimized according to the main structure strengthening scheme.

Keywords:strengthening and reconstruction; energy dissipation technology; shear type metal energy dissipater; X-shaped brace connection

通讯作者：彪仿俊，高级工程师，一级注册结构工程师，Email：19979365@qq.com。