考虑装置失效的高层建筑舒适度生命周期设计

Life Cycle Cost Based Design of Wind-Induced Human Comfort Performance for Tall Buildings with Damper Device′s Failure Probability Consideration

鉴于个体对风致振动反应的不确定性及差异性,结合日本的AIJ(Aruitectural Institute of Japan,简称AIJ)标准,建立评价高层建筑风振舒适度性能水平的感振率模型,对基于可靠度理论的生命周期费用模型进行修正,并在模型中考虑了风振控制装置失效对结构舒适度性能的影响。利用修正模型对高层建筑调频质量阻尼器(tuned mass damper,简称TMD)、调频液柱阻尼器(tuned liguid column damper,简称TLCD)以及组合调谐阻尼器(combined tuned damper,简称CTD)安装与否进行投资决策。研究表明:考虑振动装置失效时结构1年内的感振率可达到不考虑装置失效时的1.4~3倍;基于修正模型进行各阻尼器方案比选时,CTD的减振效率和生命周期费用都介于TMD和TLCD之间,是个很有竞争力的选择。

In view of individual uncertainty and diversity of wind-induced vibration response,a vibration-sensation rate model based on AIJES-V001-2004is proposed to modify the reliability theory based life cycle cost model,in which the damper device′s failure probability is consideration to evaluate human comfort performance of super tall buildings under wind load.Then,the modified life cycle cost model is used to the human comfort design choice of a super tall building with/without tuned mass damper(TMD),tuned liquid column damper(TLCD)or combined tuned damper(CTD)device to illustrate its effectiveness and applicability.The results show that the vibration-sensation rate of the building in one typical year is 1.4~3times as higher as that without the damper device′s failure probability consideration.And in this case study,the vibration control efficiency and life cycle cost of the CTD-structure system are between those of the TMD-structure system and TLCD-structure system,as a competitive option.