The suitable repair forecasting is needed for proper maintenance of the buildings. The appropriate maintenance planning should be based on the prognostic analysis of the repair needs. However, in Poland, maintenance p...The suitable repair forecasting is needed for proper maintenance of the buildings. The appropriate maintenance planning should be based on the prognostic analysis of the repair needs. However, in Poland, maintenance planning is currently not seen as a long-term system. Repairs are understood as extemporary work and are carried out exclusively on the basis of intermittent inspections and controls. One of the numerous factors determining maintenance planning is exploitation reliability conditioned by durability. This article presents a proposal to determine the prediction of operational reliability of the building constructed using traditional technology. The method of behaving and changing the reliability of the building throughout its use will be useful in planning renovations. The presented analysis includes apartment buildings erected in a traditional technology and regards them as technical objects. For such approached buildings, it is proposed to apply rules applied for mechanical and electrical objects. The probability of the exploitation of a building without any breakdowns in a given period of time is defined as exploitation reliability.展开更多
文摘以Fick第二定律为理论基础,建立了氯盐侵蚀下输电线路基础受Cl-扩散侵蚀作用的耐久性寿命预测模型。采用概率方法建立了基础耐久性寿命极限状态方程,通过Nataf变换将各基本随机变量变换为独立标准正态变量,基于二阶可靠度方法(second order reliability method,SORM),采用Breitung方法实现了指定可靠度下基础耐久性寿命计算。以±800 kV哈密南—郑州直流特高压工程为背景,研究了模型中基础保护层厚度、水胶比、临界Cl-浓度、养护时间和年平均气温等变量的统计参数对基础耐久性失效概率分布规律的影响。研究表明,概率方法求得的基础耐久性寿命可靠度指标满足规范中最小可靠度指标为1.5的要求,为线路基础的耐久性设计及寿命预测提供依据。
文摘The suitable repair forecasting is needed for proper maintenance of the buildings. The appropriate maintenance planning should be based on the prognostic analysis of the repair needs. However, in Poland, maintenance planning is currently not seen as a long-term system. Repairs are understood as extemporary work and are carried out exclusively on the basis of intermittent inspections and controls. One of the numerous factors determining maintenance planning is exploitation reliability conditioned by durability. This article presents a proposal to determine the prediction of operational reliability of the building constructed using traditional technology. The method of behaving and changing the reliability of the building throughout its use will be useful in planning renovations. The presented analysis includes apartment buildings erected in a traditional technology and regards them as technical objects. For such approached buildings, it is proposed to apply rules applied for mechanical and electrical objects. The probability of the exploitation of a building without any breakdowns in a given period of time is defined as exploitation reliability.
