基于《建设工程抗震管理条例》实施背景的医疗建筑混合减震分析
Research on application of hybrid energy dissipation technology in a public medical structure based on"Regulation on the administration of earthquake resistance of construction projects"issued by the government
何雄科 1周洋 2田野 1王文才1
作者信息
- 1. 北京赛福思创减震科技股份公司,北京 100190
- 2. 防灾科技学院土木工程学院,河北 廊坊 065201;中国地震局建筑物破坏机理与防御重点实验室,河北 三河 065201
- 折叠
摘要
本文案例分析基于2021年9月1日起实施的《建设工程抗震管理条例》(国令第744号)的相关要求,位于高烈度设防区、地震重点监视防御区的新建医院应采用隔震减震等技术,保证设防地震时能够满足正常使用要求.本文对某医疗建筑的混合式消能减震设计方案进行分析,消能器的布置按照最终能形成均匀合理的结构体系以及最优减震效率为原则,沿结构两主轴方向分别设置了 BRB和黏滞阻尼器的混合减震布置方案.分析结果表明,在多遇地震下,结构层间变形较小,消能器处于弹性工作阶段,BRB给主体结构提供一定的附加刚度;在设防地震下,消能器率先发生屈服进入弹塑性工作阶段,提供一定的附加阻尼比,确保结构层间变形、楼面水平加速度等指标均能满足《建设工程抗震管理条例》(国令第744号)中关于正常使用的性能目标;在罕遇地震下,混合减震方案充分利用金属材料的弹塑性和黏滞阻尼器的黏滞滞回变形耗散和吸收地震能量,从而降低结构的地震响应,提高结构的安全储备,同时具有较好的经济效益.
Abstract
This paper analyzes,compares and selects the energy dissipation and shock absorption design schemes of the outpatient and inpatient building of a public health medical treatment center construction project,and introduces the arrangement method of energy dissipation and shock absorption devices.The results show that under frequent earthquakes,the interlayer deformation of the inpatient building structure is small,and the energy dissipator is in the elastic working stage,and its main function is to provide a certain additional stiffness for the main structure of the inpatient building;Under fortification earthquakes,the interlayer deformation is relatively large,and the energy dissipator yields before the main structure,thus entering the elastic-plastic working stage;Under rare earthquakes,hybrid energy dissipation can use the elastic-plastic properties of metal materials and the viscous hysteresis deformation of viscous dampers to dissipate and absorb seismic energy,thereby reducing the seismic response of the structure and improving its safety reserve,which is better economic benefit.
关键词
医疗建筑/钢筋混凝土框架结构/消能减震设计/弹塑性时程分析Key words
medical building/reinforced concrete frame structure/energy dissipation design/nonlinear time-history analysis引用本文复制引用
出版年
2024
NETL
NSTL
万方数据