装配式钢结构建筑梯次利用可靠度研究

Research on Reliability of Prefabricated Steel Buildings during Cascade Utilization

为推进建筑资源的更优利用,准确分析装配式钢结构建筑在体育赛事临时设施、应急建筑、可拆装部队营房等“装配-拆解-再利用”应用场景中的可靠度,该研究引入建筑梯次利用概念,采用可靠度工程复杂系统分析中的Markov方法,经过冗余类别确定、可靠度函数推导、函数优化分析等,建立了装配式钢结构建筑系统梯次利用过程中安全性能和健康性能的分析方法。其中,通过引入表征建筑系统安全性能的失效概率的修正系数,以及表征建筑系统健康性能的健康性能变量,提高了可靠度分析的准确性和效率。方法中的安全性能、健康性能评价指标体系可根据工程实际调整,具有较高的工程应用灵活度。文中以装配式钢结构冬奥临时服务设施赛后拆除应用于人民公园公共空间为例,介绍了该分析方法的应用过程,具有一定工程应用价值。

In order to promote better use of building resources and accurately analyze the reliability of prefabricated steel buildings in the“assemble-disassemble-reuse”application scenarios of temporary facilities for sports events,emergency buildings,detachable military barracks,an analysis method of safety performance and health performance of prefabricated steel building system in the process of cascade utilization is established based on Markov method of reliability engineering complex system analysis,after the redundancy category determination,reliability function derivation,function optimization analysis and other steps,in which the concept of building cascade utilization is introduced.The accuracy and efficiency of reliability analysis are improved by introducing the correction coefficient of failure probability to characterize the safety performance of building system and the health performance variable to characterize the health performance of building system.The evaluation index system of safety performance and health performance in the method can be adjusted according to the actual engineering,so that it has high flexibility in engineering application.Taking the application process of prefabricated steel structure temporary service facilities disassembled after the Winter Olympics in the public space of People's Park as an example,this paper introduces the application process of the analysis method,which has certain reference for engineering application.