一种改进的工程结构全寿命设计理论指标体系

以结构耐久性为主线,对现有工程结构全寿命设计理论框架进行重组,将结构的全寿命设计目标总结为可靠性目标和可持续性目标两方面,建立了包含安全性、适用性、耐久性、经济影响、环境影响和社会影响等设计目标的全寿命设计体系,并确定了基于结构动态性能的全寿命设计思路。通过建立结构可持续发展指标,解决了现有全寿命设计理论中概念模糊和指标重复的问题,并完善了全寿命成本的内涵。改进后的全寿命设计理论指标体系具有更为完善合理的构架,能够广泛适应各种结构类型和使用情况。

Modified life-cycle design index system of engineering structures

Following the mainline of structural durability, this paper restructured the theoretical framework of life-cycle design (LCD) method, and set up the reliability and sustainability LCD objectives, including safety, serviceability, durability, economic impacts, environmental impacts and social impacts. The modified LCD method was carried out through the dynamic performance-based design concept. It solved the problems of vague concepts and repeated indicators in current LCD methods by setting up the sustainability indicator, and also replenished the contents of life-cycle cost (LCC) at the same time. The modified LCD index system possesses a more complete and reasonable framework, and can be applicable to a wide variety of structural types and service conditions.