超高层建筑屈曲约束支撑生命周期经济成本评估  

Life cycle cost assessment for buckling-restrained braced in super tall buildings

作　　者：赵昕[1,2] 张鸿玮 

机构地区：[1]同济大学建筑工程系,上海200092 [2]同济大学建筑设计研究(集团)有限公司,上海200092

出　　处：《地震工程与工程振动》2016年第1期127-134,共8页Earthquake Engineering and Engineering Dynamics

基　　金：上海市优秀技术带头人计划(14XD1423900);上海市科技攻关计划(09dz1207704)~~

摘　　要：建筑结构生命周期经济成本可衡量建筑在整个服役阶段性能水平和经济性,其包括初始建设费用、维护拆除以及失效费用。在超高层建筑结构方案设计阶段,需对不同方案进行生命周期的评估和优化。本文引入一种结构生命周期经济成本计算方法和评估体系,并针对地震作用下,结合该评价方法和结构的抗震性能目标,分析不同方案的失效费用,方便工程评估与设计。屈曲约束支撑等消能减震方案能够降低结构的地震响应,提高结构的抗震性能水平,并可降低建筑结构生命周期的经济成本。本文以某300 m带环带桁架的支撑框架核心筒超高层建筑为例,评估屈曲约束支撑等多方案生命周期经济成本,并选出生命周期经济成本较低的最优方案,该方法是对超高层设计方法和评估的有益探索。Life cycle cost is able to evaluate the construction, maintenance, remove and damage structural performance and economical level, which includes initial cost. The design for the high-rise buildings should be evaluated and optimized according to the life cycle assessment. New assessment and calculation method of the structural life cycle cost will be introduced in this paper. Combined with this assessment system and structural seismic perform- ance objective, the damage cost under the seismic load for different plans will be evaluated. The method facilitates the evaluation and design for the structures. Buckling-restrained braces can reduce seismic response for structure and enhance the seismic performance capacity. Meanwhile life cycle cost will also be saved. A super tall building with belt truss frame core-wall structural system is exemplified to evaluate optimal plan will be selected with the assessment system. The application the design of high-rise buildings. damage cost for different plans. Thus the of assessment is a beneficial reference for

关 键 词：超高层 屈曲约束支撑 生命周期 构件损伤 经济成本评估 

分 类 号：TU973[建筑科学—结构工程]